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E Molina - One of the best experts on this subject based on the ideXlab platform.
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Hypolipidemic and Hypoglycaemic Effect of Wholemeal Bread with Amaranth (Amaranthus dubius Mart. ex Thell.) on Sprague Dawley Rats
Foods (Basel Switzerland), 2020Co-Authors: Adriana Beatriz Sánchez-urdaneta, E Molina, Pedro González-redondo, Keyla Carolina Montero-quintero, Belkys Bracho-bravo, Rafael Moreno-rojasAbstract:The effect of consuming breads made with wheat flour and Amaranth (Amaranthus dubius Mart. ex Thell.) wholemeal flour on Sprague Dawley rats with hyperlipidaemia and hyperglycaemia induced through feeding was studied. Four diets were provided: control (CD: Ratarina®), commercial bread (CBD), bread with 100 g·kg-1 (ABD10) and 200 g·kg-1 (ABD20) amaranth flour. Zoometric and blood chemistry parameters were measured before and after consuming the diets. A completely random factorial design of 2 × 4 × 2 was used. The factors were blood lipids and glucose level (normal, N and elevated, E), diet (CD, CBD, ABD10 and ABD20) and sex (female, F and male, M). The rats consuming ABD10 and ABD20 diets presented the lowest glucose values, although with no differences (p > 0.05) between the groups of elevated blood lipids and glucose rats (E). Triglyceride concentrations decreased in ABD10 and ABD20 treatments in comparison with CD, elevated blood lipids and glucose (E) rats, while ABD10 rats showed lower total cholesterol level than normal (N) rats. The high-density lipoprotein cholesterol values increased in the ABD10 and ABD20 groups (p < 0.05), while it did lower for very low-density lipoprotein cholesterol and cardiac risk index (p < 0.05). In ABD10 and ABD20 treatments, the abdominal circumference decreased in both sexes (p < 0.05) between weeks 23 and 31. In conclusion, consumption of bread with amaranth improved lipid profiles of rats and could help to prevent metabolic and cardiovascular diseases.
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effect of the inclusion of Amaranthus dubius in diets on carcass characteristics and meat quality of fattening rabbits
Journal of Applied Animal Research, 2018Co-Authors: E Molina, Keyla Carolina Monteroquintero, Rafael Morenorojas, P Gonzalezredondo, Adriana Beatriz SanchezurdanetaAbstract:ABSTRACTThis study evaluated the effect of dietary supplementation with Amaranthus dubius on carcass characteristics and meat quality of fattening rabbits. One hundred and six New Zealand White rabbits, weaned at 35 d of age, were assigned to three experimental diets including 0%, 16% and 32% of A. dubius (A0, A16 and A32), and were fed ad libitum until their slaughter at 87 d of age. Drip loss percentage (A0: 2.47, A16: 3.83 and A32: 3.61%; P < .05), dissectible fact percentage (A0: 3.02, A16: 3.63 and A32: 3.77%; P < .05) and thoracic cage percentage (A0: 12.97, A16: 13.68 and A32: 13.68%; P < .05) increased with diets including A. dubius. Contrarily, hind part percentage (A0: 40.00, A16: 38.95 and A32: 38.89%; P < .05) and compactness of the carcass decreased (A0: 2.38, A16: 2.42 and A32: 2.48; P < .01). The inclusion of A. dubius in the diets increased protein (A0: 21.52, A16: 23.76 and A32: 24.27%; P < .05) and fat contents (A0: 3.33, A16: 4.16 and A32: 5.39%; P < .05), while moisture of meat decreas...
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Evaluation of haematological, serum biochemical and histopathological parameters of growing rabbits fed Amaranthus dubius.
Journal of animal physiology and animal nutrition, 2017Co-Authors: E Molina, Pedro González-redondo, Rafael Moreno-rojas, Keyla Carolina Montero-quintero, N Chirinos-quintero, Adriana Beatriz Sánchez-urdanetaAbstract:Amaranthus dubius is an alternative source of fibre and protein for the feed formulation for growing rabbits, although its effects on their health status are yet unknown. Therefore, this study aimed to evaluate the effects of three dietary levels (0, 160 and 320 g/kg) of A. dubius on haematological, serum biochemical and histopathological parameters of fattening rabbits. One hundred and thirteen New Zealand White rabbits were fed ad libitum from weaning (35 days) to slaughter (87 days). The health status of the animals was monitored, and mortality was recorded. Before slaughtering, 30 rabbits were randomly selected for haematological and serum biochemical analysis. During slaughter, 18 rabbits were randomly selected for histopathological study in heart, liver, lung and small intestine. The health status of rabbits was good, with no differences among treatments in mortality. Diet and sex did not affect the values of most haematological and serum biochemical parameters. Fibrinogen, glucose and high-density lipoprotein values increased significantly from 0 to 320 g/kg A. dubius diets. The white blood cell count and glutamic oxaloacetic transaminase values decreased significantly from 0 to 320 g/kg A. dubius diets. The organs showed histologically well-structured tissues. However, in all experimental groups several samples with lesions were observed, always highly focalized in small tissue areas. The main lesions observed, probably related to conditions of thermal stress affecting the rabbits, were cholesterolosis (heart), steatosis (liver), inflammatory lymphoplasmacytic infiltrate (lung) and chronic inflammatory tissue damage (small intestine). In conclusion, the inclusion of up to 320 g/kg A. dubius in diet did not jeopardize the health status of growing rabbits. Therefore, A. dubius can become an alternative raw material for the formulation of feeds in tropical and subtropical countries where this plant is widespread.
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Effect of the inclusion of Amaranthus dubius in diets on carcass characteristics and meat quality of fattening rabbits
Journal of Applied Animal Research, 2017Co-Authors: E Molina, Pedro González-redondo, Rafael Moreno-rojas, Keyla Carolina Montero-quintero, Adriana Beatriz Sánchez-urdanetaAbstract:ABSTRACTThis study evaluated the effect of dietary supplementation with Amaranthus dubius on carcass characteristics and meat quality of fattening rabbits. One hundred and six New Zealand White rabbits, weaned at 35 d of age, were assigned to three experimental diets including 0%, 16% and 32% of A. dubius (A0, A16 and A32), and were fed ad libitum until their slaughter at 87 d of age. Drip loss percentage (A0: 2.47, A16: 3.83 and A32: 3.61%; P
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toxic and antinutritional substances content of Amaranthus dubius mart ex thell effect of plant part and harvesting season
Revista De La Facultad De Agronomia De La Universidad Del Zulia, 2016Co-Authors: E Molina, Keyla Carolina Monteroquintero, Rafael Morenorojas, P Gonzalezredondo, Rosa Ferrer, Adriana Beatriz SanchezurdanetaAbstract:Amaranth species are gaining increasing interest for human and animal nutrition, although its use is limited due to their toxic and antinutritional substances contents. The contents of toxic and antinutritionals substances (oxalates, phytates, total phenols, condensate tannins, hydrolysable tannins and cyanide) in the leaves, stems, and panicles of Amaranthus dubius Mart. ex Thell., not yet investigated, were evaluated in both rainy and dry seasons. The plants were cultivated in El Nectar Hacienda, located in Merecure, in the municipality of Acevedo, Miranda State, Venezuela (10o31’38" N, 66o33’16" W). The concentration of oxalates, phytates, total phenols, condensate and hydrolysable tannins were determined by classic colorimetric techniques, the cyanide being determined by silver nitrate titration. The content of toxic and antinutrients in A. dubiusranged from 169.6 to 368.5 mg of oxalates.kg -1 DM, 0.771 to 7.482 mg of phytates.g -1 DM, 0.47 to 1.77 mg of total phenols.g -1 DM, and 0.22 to 1.20 mg of condensate tannins.g -1 DM. Cyanide and hydrolysable tannins were not detected. The values of most of these substances presented differences according to harvesting seasons and plant part (P<0.001), as well as an interaction between both factors. The content of toxic and antinutrients was generally higher in the dry than in the rainy season for all parts of the plant. The harvesting season and the plant part affect the content of toxic and antinutritional substances in A.dubius, whose values were, however, below the maximum levels allowed by regulators for human consumption. Therefore, as raw material it does not need to be processed in order to guarantee its harmlessness.
Adriana Beatriz Sanchezurdaneta - One of the best experts on this subject based on the ideXlab platform.
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effect of the inclusion of Amaranthus dubius in diets on carcass characteristics and meat quality of fattening rabbits
Journal of Applied Animal Research, 2018Co-Authors: E Molina, Keyla Carolina Monteroquintero, Rafael Morenorojas, P Gonzalezredondo, Adriana Beatriz SanchezurdanetaAbstract:ABSTRACTThis study evaluated the effect of dietary supplementation with Amaranthus dubius on carcass characteristics and meat quality of fattening rabbits. One hundred and six New Zealand White rabbits, weaned at 35 d of age, were assigned to three experimental diets including 0%, 16% and 32% of A. dubius (A0, A16 and A32), and were fed ad libitum until their slaughter at 87 d of age. Drip loss percentage (A0: 2.47, A16: 3.83 and A32: 3.61%; P < .05), dissectible fact percentage (A0: 3.02, A16: 3.63 and A32: 3.77%; P < .05) and thoracic cage percentage (A0: 12.97, A16: 13.68 and A32: 13.68%; P < .05) increased with diets including A. dubius. Contrarily, hind part percentage (A0: 40.00, A16: 38.95 and A32: 38.89%; P < .05) and compactness of the carcass decreased (A0: 2.38, A16: 2.42 and A32: 2.48; P < .01). The inclusion of A. dubius in the diets increased protein (A0: 21.52, A16: 23.76 and A32: 24.27%; P < .05) and fat contents (A0: 3.33, A16: 4.16 and A32: 5.39%; P < .05), while moisture of meat decreas...
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toxic and antinutritional substances content of Amaranthus dubius mart ex thell effect of plant part and harvesting season
Revista De La Facultad De Agronomia De La Universidad Del Zulia, 2016Co-Authors: E Molina, Keyla Carolina Monteroquintero, Rafael Morenorojas, P Gonzalezredondo, Rosa Ferrer, Adriana Beatriz SanchezurdanetaAbstract:Amaranth species are gaining increasing interest for human and animal nutrition, although its use is limited due to their toxic and antinutritional substances contents. The contents of toxic and antinutritionals substances (oxalates, phytates, total phenols, condensate tannins, hydrolysable tannins and cyanide) in the leaves, stems, and panicles of Amaranthus dubius Mart. ex Thell., not yet investigated, were evaluated in both rainy and dry seasons. The plants were cultivated in El Nectar Hacienda, located in Merecure, in the municipality of Acevedo, Miranda State, Venezuela (10o31’38" N, 66o33’16" W). The concentration of oxalates, phytates, total phenols, condensate and hydrolysable tannins were determined by classic colorimetric techniques, the cyanide being determined by silver nitrate titration. The content of toxic and antinutrients in A. dubiusranged from 169.6 to 368.5 mg of oxalates.kg -1 DM, 0.771 to 7.482 mg of phytates.g -1 DM, 0.47 to 1.77 mg of total phenols.g -1 DM, and 0.22 to 1.20 mg of condensate tannins.g -1 DM. Cyanide and hydrolysable tannins were not detected. The values of most of these substances presented differences according to harvesting seasons and plant part (P<0.001), as well as an interaction between both factors. The content of toxic and antinutrients was generally higher in the dry than in the rainy season for all parts of the plant. The harvesting season and the plant part affect the content of toxic and antinutritional substances in A.dubius, whose values were, however, below the maximum levels allowed by regulators for human consumption. Therefore, as raw material it does not need to be processed in order to guarantee its harmlessness.
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effects of diets with Amaranthus dubius mart ex thell on performance and digestibility of growing rabbits
World Rabbit Science, 2015Co-Authors: E Molina, Keyla Carolina Monteroquintero, Rafael Morenorojas, B. Bracho, P Gonzalezredondo, Adriana Beatriz SanchezurdanetaAbstract:The effects on performance and digestibility in growing rabbits were studied by comparing 3 diets containing increasing inclusion rates of amaranth (Amaranthus dubius Mart. ex Thell.): 0 (A0), 160 (A16) and 320 g/kg (A32 diet). Diets were formulated isoproteic and isocaloric to meet the nutrient requirements of growing rabbits. One hundred and thirteen weaned New Zealand White rabbits (mean±standard deviation weight: 760±102 g), individually caged, were randomly assigned to one of the 3 experimental diets. Rabbits were fed ad libitum from 35 to 87 d of age, and health status and performance traits were onitored. The coefficients of total tract apparent digestibility of the diets were measured between 42 and 46 d of age in 12 rabbits per treatment. Amaranthus dubius contained 209 g/kg dry matter (DM) of crude protein and 398 g/kg DM of neutral detergent fibre. There were no significant differences between treatments in weight gain (mean 21.6 g/d) and live weight at the end of the fattening period (mean 1883 g). Daily feed intake was higher (P<0.05) in A0 than in A16 and A32 diets (85.4 vs. 73.7 and 69.9 g/d, respectively), and feed conversion rate improved with increased inclusion of A. dubius in the diet (from 3.84 to 3.28 for A0 and A32 diets, respectively; P<0.05). Health status was not affected by the amaranth inclusion rate. Total tract apparent digestibility showed high values, with no differences among diets except for ether extract. Thus, A. dubius could be considered as an alternative source of protein and fibre for rabbit feeding in tropical and subtropical regions.
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original sindrome metabolico efecto del consumo de panes integrales con amaranto Amaranthus dubius mart ex thell sobre la respuesta glicemica y parametros bioquimicos en ratas sprague dawley
2015Co-Authors: Keyla Carolina Monteroquintero, Rafael Morenorojas, E Molina, Maximo Segundo Colinabarriga, Adriana Beatriz SanchezurdanetaAbstract:Introduction: The incorporation of functional ingredients like amaranth (Amaranthus dubius Mart. ex Thell.) in bread making is a strategy to increase fiber intake, which is associated with beneficial health effects, impro ving glycemic response and lipid profile. Materials and methods: Thirty male Sprague dawley rats were randomized into three groups: diet of bread with 0% amaranth (PA0, control), diet of bread with 10% amaranth (PA10) and bread diet with 20% amaranth (PA20) for determining the feed intake, weight gain, triglyceride, total cholesterol, VLDL-C, LDL-C, HDL-C, protein and postprandial glycemic response. Data were analyzed using a completely randomized with 10 replications analysis, using the comparison test of Tukey for biochemical parameters. Postprandial glycemic response was analyzed by the method of repeated measures over time. Results and discussion: The daily intake and weight gain was not affected (P>0.05) in the groups with PA10 and PA20. The concentration of glucose, triglycerides and protein showed statistically significant differences (P>0.05) by the difference in content of amaranth diets. The values of total cholesterol, LDL-C, and atherogenic risk factor index were statistically significant (P<0.05) re sulting goodwill group formed by PA10 and PA20. PA10 and PA20 in the hyperglycemic peak groups and the total phase hyperglycemia were lower, showing a better glycemic response.
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efecto del consumo de panes integrales con amaranto Amaranthus dubius mart ex thell sobre la respuesta glicemica y parametros bioquimicos en ratas sprague dawley
Nutricion Hospitalaria, 2015Co-Authors: Keyla Carolina Monteroquintero, Rafael Morenorojas, E Molina, Maximo Segundo Colinabarriga, Adriana Beatriz SanchezurdanetaAbstract:Introduction: The incorporation of functional ingredients like amaranth (Amaranthus dubius Mart. ex Thell.) in bread making is a strategy to increase fiber intake, which is associated with beneficial health effects, improving glycemic response and lipid profile. Materials and methods: Thirty male Sprague dawley rats were randomized into three groups: diet of bread with 0% amaranth (PA0, control), diet of bread with 10% amaranth (PA10) and bread diet with 20% amaranth (PA20) for determining the feed intake, weight gain, triglyceride, total cholesterol, VLDL-C, LDL-C, HDL-C, protein and postprandial glycemic response. Data were analyzed using a completely randomized with 10 replications analysis, using the comparison test of Tukey for biochemical parameters. Postprandial glycemic response was analyzed by the method of repeated measures over time. Results and discussion: The daily intake and weight gain was not affected (P>0.05) in the groups with PA10 and PA20. The concentration of glucose, triglycerides and protein showed statistically significant differences (P>0.05) by the difference in content of amaranth diets. The values of total cholesterol, LDL-C, and atherogenic risk factor index were statistically significant (P<0.05) resulting goodwill group formed by PA10 and PA20. PA10 and PA20 in the hyperglycemic peak groups and the total phase hyperglycemia were lower, showing a better glycemic response. Conclusion: amaranth could be used as a functional ingredient in breads working as it improved the lipid profile and postprandial glycemic response.
Molina Edgar - One of the best experts on this subject based on the ideXlab platform.
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Effect of the inclusion of Amaranthus dubius in diets on carcass characteristics and meat quality of fattening rabbits
'Informa UK Limited', 2017Co-Authors: Molina Edgar, González-redondo Pedro, Moreno-rojas Rafael, Montero Quintero Kelia, Sánchez-urdaneta AdrianaAbstract:This study evaluated the effect of dietary supplementation with Amaranthus dubius on carcass characteristics and meat quality of fattening rabbits. One hundred and six New Zealand White rabbits, weaned at 35 d of age, were assigned to three experimental diets including 0%, 16% and 32% of A. dubius (A0, A16 and A32), and were fed ad libitum until their slaughter at 87 d of age. Drip loss percentage (A0: 2.47, A16: 3.83 and A32: 3.61%; P < .05), dissectible fact percentage (A0: 3.02, A16: 3.63 and A32: 3.77%; P < .05) and thoracic cage percentage (A0: 12.97, A16: 13.68 and A32: 13.68%; P < .05) increased with diets including A. dubius. Contrarily, hind part percentage (A0: 40.00, A16: 38.95 and A32: 38.89%; P < .05) and compactness of the carcass decreased (A0: 2.38, A16: 2.42 and A32: 2.48; P < .01). The inclusion of A. dubius in the diets increased protein (A0: 21.52, A16: 23.76 and A32: 24.27%; P < .05) and fat contents (A0: 3.33, A16: 4.16 and A32: 5.39%; P < .05), while moisture of meat decreased proportionally (A0: 74.23, A16: 70.99 and A32: 67.70%; P < .05). These findings suggest that A. dubius can be considered as an alternative raw material for rabbit feeding in tropical and subtropical regions where it is widespread
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Sustancias tóxicas y antinutricionales de Amaranthus dubius Mart. ex Thell. Efecto de la parte de la planta y la época de recolecta
Universidad de Zulía, 2016Co-Authors: Molina Edgar, González-redondo Pedro, Moreno-rojas Rafael, Montero Quintero Kelia, Ferrer Rosa, Sánchez Urdaneta A.Abstract:Amaranth species are gaining increasing interest for human and animal nutrition, although its use is limited due to their toxic and antinutritional substances contents. The contents of toxic and antinutritionals substances (oxalates, phytates, total phenols, condensate tannins, hydrolysable tannins and cyanide) in the leaves, stems, and panicles of Amaranthus dubius Mart. ex Thell., not yet investigated, were evaluated in both rainy and dry seasons. The plants were cultivated in El Néctar Hacienda, located in Merecure, in the municipality of Acevedo, Miranda State, Venezuela (10º31’38" N, 66º33’16" W). The concentration of oxalates, phytates, total phenols, condensate and hydrolysable tannins were determined by classic colorimetric techniques, the cyanide being determined by silver nitrate titration. The content of toxic and antinutrients in A. dubius ranged from 169.6 to 368.5 mg of oxalates.kg-1 DM, 0.771 to 7.482 mg of phytates.g-1 DM, 0.47 to 1.77 mg of total phenols.g-1 DM, and 0.22 to 1.20 mg of condensate tannins.g-1 DM. Cyanide and hydrolysable tannins were not detected. The values of most of these substances presented differences according to harvesting seasons and plant part (P
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Effects of diets with Amaranthus dubius Mart. ex Thell. on performance and digestibility of growing rabbits
'Universitat Politecnica de Valencia', 2015Co-Authors: Molina Edgar, González-redondo Pedro, Moreno-rojas Rafael, Montero-quintero Keyla, Bracho Belkys, Sánchez-urdaneta AdrianaAbstract:[EN] The effects on performance and digestibility in growing rabbits were studied by comparing 3 diets containing increasing inclusion rates of amaranth (Amaranthus dubius Mart. ex Thell.): 0 (A0), 160 (A16) and 320 g/kg (A32 diet). Diets were formulated isoproteic and isocaloric to meet the nutrient requirements of growing rabbits. One hundred and thirteen weaned New Zealand White rabbits (mean±standard deviation weight: 760±102 g), individually caged, were randomly assigned to one of the 3 experimental diets. Rabbits were fed ad libitum from 35 to 87 d of age, and health status and performance traits were onitored. The coefficients of total tract apparent digestibility of the diets were measured between 42 and 46 d of age in 12 rabbits per treatment. Amaranthus dubius contained 209 g/kg dry matter (DM) of crude protein and 398 g/kg DM of neutral detergent fibre. There were no significant differences between treatments in weight gain (mean 21.6 g/d) and live weight at the end of the fattening period (mean 1883 g). Daily feed intake was higher (P
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Formulación de un alimento balanceado a base de Amaranthus dubius Mart. ex Thell. para conejos de engorde
Universidad de Córdoba Servicio de Publicaciones, 2014Co-Authors: Molina EdgarAbstract:El presente trabajo de Tesis Doctoral se compone de dos áreas distintas pero complementarias de investigación, la primera se relacionó con la determinación de metales y sustancias tóxicas y antinutricionales en el amaranto o bledo (Amaranthus dubius Mart. ex Thell.) cultivado en Venezuela, como forma de determinar su potencial uso como materia prima en la alimentación humana y animal (Capítulos I y II). La segunda correspondió a un ensayo de alimentación de conejos de engorde para determinar el efecto del consumo de alimentos balanceados formulados con A. dubius sobre las características de crecimiento, digestibilidad, canal, calidad de la carne, parámetros hematológicos, bioquímica sanguínea y cambios histológicos en los órganos vitales, entre otros aspectos (Capítulos III, IV y V). Amaranthus dubius cultivado en la población de Merecure, estado Miranda, Venezuela; presentó una alta concentración de metales considerados esenciales en la alimentación humana y animal, especialmente calcio, magnesio y hierro. Además, mostró bajas concentraciones o ausencia de metales pesados, con excepción del aluminio. Se demostró que la concentración de metales varió en los distintos órganos de la planta y de acuerdo a la época de recolecta; sin embargo, cada metal presentó un comportamiento distinto, lo cual podría estar influenciado por diversos factores, como las características del metal, la fisiología de la planta y la composición el suelo donde se desarrolló el cultivo. En general, se observó que las hojas y las panículas de A. dubius presentaron mayor concentración de metales que los tallos y...This Doctoral Thesis is composed of two distinct research areas; the first refers to the determination of metals and toxic and antinutritional substances in Amaranth or Bledo (Amaranthus dubius Mart. ex Thell.) cultivated in Venezuela, as a way to determine its potential use as raw material in food industry (Chapters I and II). The second corresponds to a feeding trial of growing rabbits to determine the effects of consumption of balanced feeds formulated with A. dubius on growth characteristics, digestibility, carcass traits, meat quality, haematological and blood biochemical parameters, and histological changes in the vital organs, among other aspects (Chapters III, IV and V). Amaranthus dubius cultivated in the population Merecure, Miranda State, Venezuela; presented high concentration of metals essential in human and animal nutrition, especially calcium, magnesium and iron. Moreover, it showed low levels or absence of heavy metals, with the exception of aluminium. It was shown that the concentration of metals varied in different plant organs and according to the harvesting season; however, each metal showed a different behaviour, which may be influenced by several factors, as the characteristics of the metal, plant physiology and soil composition where cultivation was carried out. Overall, was observed that the leaves and panicles of A. dubius showed higher metal concentrations than stems and three parts of the plant showed metal concentrations higher in the rainy season compared to the dry season. These findings should be considered for the cultivation of the plant and its potential use in the food industry..
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Efecto de la época de recolecta y órgano de la planta sobre el contenido de metales de Amaranthus dubius Mart. ex Thell
Asociación Interciencia, 2011Co-Authors: González-redondo Pedro, Molina Edgar, Moreno-rojas Rafael, Montero Keyla, Sánchez-urdaneta, Adriana BeatrizAbstract:El amaranto (Amaranthus dubius Mart. ex Thell.) es utilizado como planta forrajera en la alimentación de ovinos, caprinos, porcinos y bovinos, además, de ser reportada como arvense en diversos cultivos comerciales. Se evaluó el contenido de metales en hojas, tallos y panículas de amaranto recolectado en época lluviosa y seca. Las plantas fueron cultivadas en la población de Merecure, municipio Acevedo, estado Miranda, Venezuela. Se determinó la concentración de Ca, Mg, Zn, Fe, Cu, Al, Cd, Pb y Hg por espectroscopia de absorción atómica y Na y K por fotometría de llama. Los valores encontrados fueron superiores a los reportados por otros investigadores en la misma y en otras especies de amaranto. Los metales mayoritarios fueron Ca, K, Al, Mg y Fe. Se detectó trazas de Hg y no se evidenció la presencia de Cd y Pb. La acumulación de metales fue heterogénea entre los órganos de la planta y estuvo influenciada por la época de recolect
Keyla Carolina Monteroquintero - One of the best experts on this subject based on the ideXlab platform.
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effect of the inclusion of Amaranthus dubius in diets on carcass characteristics and meat quality of fattening rabbits
Journal of Applied Animal Research, 2018Co-Authors: E Molina, Keyla Carolina Monteroquintero, Rafael Morenorojas, P Gonzalezredondo, Adriana Beatriz SanchezurdanetaAbstract:ABSTRACTThis study evaluated the effect of dietary supplementation with Amaranthus dubius on carcass characteristics and meat quality of fattening rabbits. One hundred and six New Zealand White rabbits, weaned at 35 d of age, were assigned to three experimental diets including 0%, 16% and 32% of A. dubius (A0, A16 and A32), and were fed ad libitum until their slaughter at 87 d of age. Drip loss percentage (A0: 2.47, A16: 3.83 and A32: 3.61%; P < .05), dissectible fact percentage (A0: 3.02, A16: 3.63 and A32: 3.77%; P < .05) and thoracic cage percentage (A0: 12.97, A16: 13.68 and A32: 13.68%; P < .05) increased with diets including A. dubius. Contrarily, hind part percentage (A0: 40.00, A16: 38.95 and A32: 38.89%; P < .05) and compactness of the carcass decreased (A0: 2.38, A16: 2.42 and A32: 2.48; P < .01). The inclusion of A. dubius in the diets increased protein (A0: 21.52, A16: 23.76 and A32: 24.27%; P < .05) and fat contents (A0: 3.33, A16: 4.16 and A32: 5.39%; P < .05), while moisture of meat decreas...
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toxic and antinutritional substances content of Amaranthus dubius mart ex thell effect of plant part and harvesting season
Revista De La Facultad De Agronomia De La Universidad Del Zulia, 2016Co-Authors: E Molina, Keyla Carolina Monteroquintero, Rafael Morenorojas, P Gonzalezredondo, Rosa Ferrer, Adriana Beatriz SanchezurdanetaAbstract:Amaranth species are gaining increasing interest for human and animal nutrition, although its use is limited due to their toxic and antinutritional substances contents. The contents of toxic and antinutritionals substances (oxalates, phytates, total phenols, condensate tannins, hydrolysable tannins and cyanide) in the leaves, stems, and panicles of Amaranthus dubius Mart. ex Thell., not yet investigated, were evaluated in both rainy and dry seasons. The plants were cultivated in El Nectar Hacienda, located in Merecure, in the municipality of Acevedo, Miranda State, Venezuela (10o31’38" N, 66o33’16" W). The concentration of oxalates, phytates, total phenols, condensate and hydrolysable tannins were determined by classic colorimetric techniques, the cyanide being determined by silver nitrate titration. The content of toxic and antinutrients in A. dubiusranged from 169.6 to 368.5 mg of oxalates.kg -1 DM, 0.771 to 7.482 mg of phytates.g -1 DM, 0.47 to 1.77 mg of total phenols.g -1 DM, and 0.22 to 1.20 mg of condensate tannins.g -1 DM. Cyanide and hydrolysable tannins were not detected. The values of most of these substances presented differences according to harvesting seasons and plant part (P<0.001), as well as an interaction between both factors. The content of toxic and antinutrients was generally higher in the dry than in the rainy season for all parts of the plant. The harvesting season and the plant part affect the content of toxic and antinutritional substances in A.dubius, whose values were, however, below the maximum levels allowed by regulators for human consumption. Therefore, as raw material it does not need to be processed in order to guarantee its harmlessness.
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effects of diets with Amaranthus dubius mart ex thell on performance and digestibility of growing rabbits
World Rabbit Science, 2015Co-Authors: E Molina, Keyla Carolina Monteroquintero, Rafael Morenorojas, B. Bracho, P Gonzalezredondo, Adriana Beatriz SanchezurdanetaAbstract:The effects on performance and digestibility in growing rabbits were studied by comparing 3 diets containing increasing inclusion rates of amaranth (Amaranthus dubius Mart. ex Thell.): 0 (A0), 160 (A16) and 320 g/kg (A32 diet). Diets were formulated isoproteic and isocaloric to meet the nutrient requirements of growing rabbits. One hundred and thirteen weaned New Zealand White rabbits (mean±standard deviation weight: 760±102 g), individually caged, were randomly assigned to one of the 3 experimental diets. Rabbits were fed ad libitum from 35 to 87 d of age, and health status and performance traits were onitored. The coefficients of total tract apparent digestibility of the diets were measured between 42 and 46 d of age in 12 rabbits per treatment. Amaranthus dubius contained 209 g/kg dry matter (DM) of crude protein and 398 g/kg DM of neutral detergent fibre. There were no significant differences between treatments in weight gain (mean 21.6 g/d) and live weight at the end of the fattening period (mean 1883 g). Daily feed intake was higher (P<0.05) in A0 than in A16 and A32 diets (85.4 vs. 73.7 and 69.9 g/d, respectively), and feed conversion rate improved with increased inclusion of A. dubius in the diet (from 3.84 to 3.28 for A0 and A32 diets, respectively; P<0.05). Health status was not affected by the amaranth inclusion rate. Total tract apparent digestibility showed high values, with no differences among diets except for ether extract. Thus, A. dubius could be considered as an alternative source of protein and fibre for rabbit feeding in tropical and subtropical regions.
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original sindrome metabolico efecto del consumo de panes integrales con amaranto Amaranthus dubius mart ex thell sobre la respuesta glicemica y parametros bioquimicos en ratas sprague dawley
2015Co-Authors: Keyla Carolina Monteroquintero, Rafael Morenorojas, E Molina, Maximo Segundo Colinabarriga, Adriana Beatriz SanchezurdanetaAbstract:Introduction: The incorporation of functional ingredients like amaranth (Amaranthus dubius Mart. ex Thell.) in bread making is a strategy to increase fiber intake, which is associated with beneficial health effects, impro ving glycemic response and lipid profile. Materials and methods: Thirty male Sprague dawley rats were randomized into three groups: diet of bread with 0% amaranth (PA0, control), diet of bread with 10% amaranth (PA10) and bread diet with 20% amaranth (PA20) for determining the feed intake, weight gain, triglyceride, total cholesterol, VLDL-C, LDL-C, HDL-C, protein and postprandial glycemic response. Data were analyzed using a completely randomized with 10 replications analysis, using the comparison test of Tukey for biochemical parameters. Postprandial glycemic response was analyzed by the method of repeated measures over time. Results and discussion: The daily intake and weight gain was not affected (P>0.05) in the groups with PA10 and PA20. The concentration of glucose, triglycerides and protein showed statistically significant differences (P>0.05) by the difference in content of amaranth diets. The values of total cholesterol, LDL-C, and atherogenic risk factor index were statistically significant (P<0.05) re sulting goodwill group formed by PA10 and PA20. PA10 and PA20 in the hyperglycemic peak groups and the total phase hyperglycemia were lower, showing a better glycemic response.
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efecto del consumo de panes integrales con amaranto Amaranthus dubius mart ex thell sobre la respuesta glicemica y parametros bioquimicos en ratas sprague dawley
Nutricion Hospitalaria, 2015Co-Authors: Keyla Carolina Monteroquintero, Rafael Morenorojas, E Molina, Maximo Segundo Colinabarriga, Adriana Beatriz SanchezurdanetaAbstract:Introduction: The incorporation of functional ingredients like amaranth (Amaranthus dubius Mart. ex Thell.) in bread making is a strategy to increase fiber intake, which is associated with beneficial health effects, improving glycemic response and lipid profile. Materials and methods: Thirty male Sprague dawley rats were randomized into three groups: diet of bread with 0% amaranth (PA0, control), diet of bread with 10% amaranth (PA10) and bread diet with 20% amaranth (PA20) for determining the feed intake, weight gain, triglyceride, total cholesterol, VLDL-C, LDL-C, HDL-C, protein and postprandial glycemic response. Data were analyzed using a completely randomized with 10 replications analysis, using the comparison test of Tukey for biochemical parameters. Postprandial glycemic response was analyzed by the method of repeated measures over time. Results and discussion: The daily intake and weight gain was not affected (P>0.05) in the groups with PA10 and PA20. The concentration of glucose, triglycerides and protein showed statistically significant differences (P>0.05) by the difference in content of amaranth diets. The values of total cholesterol, LDL-C, and atherogenic risk factor index were statistically significant (P<0.05) resulting goodwill group formed by PA10 and PA20. PA10 and PA20 in the hyperglycemic peak groups and the total phase hyperglycemia were lower, showing a better glycemic response. Conclusion: amaranth could be used as a functional ingredient in breads working as it improved the lipid profile and postprandial glycemic response.
Adriana Beatriz Sánchez-urdaneta - One of the best experts on this subject based on the ideXlab platform.
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Hypolipidemic and Hypoglycaemic Effect of Wholemeal Bread with Amaranth (Amaranthus dubius Mart. ex Thell.) on Sprague Dawley Rats
Foods (Basel Switzerland), 2020Co-Authors: Adriana Beatriz Sánchez-urdaneta, E Molina, Pedro González-redondo, Keyla Carolina Montero-quintero, Belkys Bracho-bravo, Rafael Moreno-rojasAbstract:The effect of consuming breads made with wheat flour and Amaranth (Amaranthus dubius Mart. ex Thell.) wholemeal flour on Sprague Dawley rats with hyperlipidaemia and hyperglycaemia induced through feeding was studied. Four diets were provided: control (CD: Ratarina®), commercial bread (CBD), bread with 100 g·kg-1 (ABD10) and 200 g·kg-1 (ABD20) amaranth flour. Zoometric and blood chemistry parameters were measured before and after consuming the diets. A completely random factorial design of 2 × 4 × 2 was used. The factors were blood lipids and glucose level (normal, N and elevated, E), diet (CD, CBD, ABD10 and ABD20) and sex (female, F and male, M). The rats consuming ABD10 and ABD20 diets presented the lowest glucose values, although with no differences (p > 0.05) between the groups of elevated blood lipids and glucose rats (E). Triglyceride concentrations decreased in ABD10 and ABD20 treatments in comparison with CD, elevated blood lipids and glucose (E) rats, while ABD10 rats showed lower total cholesterol level than normal (N) rats. The high-density lipoprotein cholesterol values increased in the ABD10 and ABD20 groups (p < 0.05), while it did lower for very low-density lipoprotein cholesterol and cardiac risk index (p < 0.05). In ABD10 and ABD20 treatments, the abdominal circumference decreased in both sexes (p < 0.05) between weeks 23 and 31. In conclusion, consumption of bread with amaranth improved lipid profiles of rats and could help to prevent metabolic and cardiovascular diseases.
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Evaluation of haematological, serum biochemical and histopathological parameters of growing rabbits fed Amaranthus dubius.
Journal of animal physiology and animal nutrition, 2017Co-Authors: E Molina, Pedro González-redondo, Rafael Moreno-rojas, Keyla Carolina Montero-quintero, N Chirinos-quintero, Adriana Beatriz Sánchez-urdanetaAbstract:Amaranthus dubius is an alternative source of fibre and protein for the feed formulation for growing rabbits, although its effects on their health status are yet unknown. Therefore, this study aimed to evaluate the effects of three dietary levels (0, 160 and 320 g/kg) of A. dubius on haematological, serum biochemical and histopathological parameters of fattening rabbits. One hundred and thirteen New Zealand White rabbits were fed ad libitum from weaning (35 days) to slaughter (87 days). The health status of the animals was monitored, and mortality was recorded. Before slaughtering, 30 rabbits were randomly selected for haematological and serum biochemical analysis. During slaughter, 18 rabbits were randomly selected for histopathological study in heart, liver, lung and small intestine. The health status of rabbits was good, with no differences among treatments in mortality. Diet and sex did not affect the values of most haematological and serum biochemical parameters. Fibrinogen, glucose and high-density lipoprotein values increased significantly from 0 to 320 g/kg A. dubius diets. The white blood cell count and glutamic oxaloacetic transaminase values decreased significantly from 0 to 320 g/kg A. dubius diets. The organs showed histologically well-structured tissues. However, in all experimental groups several samples with lesions were observed, always highly focalized in small tissue areas. The main lesions observed, probably related to conditions of thermal stress affecting the rabbits, were cholesterolosis (heart), steatosis (liver), inflammatory lymphoplasmacytic infiltrate (lung) and chronic inflammatory tissue damage (small intestine). In conclusion, the inclusion of up to 320 g/kg A. dubius in diet did not jeopardize the health status of growing rabbits. Therefore, A. dubius can become an alternative raw material for the formulation of feeds in tropical and subtropical countries where this plant is widespread.
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Effect of the inclusion of Amaranthus dubius in diets on carcass characteristics and meat quality of fattening rabbits
Journal of Applied Animal Research, 2017Co-Authors: E Molina, Pedro González-redondo, Rafael Moreno-rojas, Keyla Carolina Montero-quintero, Adriana Beatriz Sánchez-urdanetaAbstract:ABSTRACTThis study evaluated the effect of dietary supplementation with Amaranthus dubius on carcass characteristics and meat quality of fattening rabbits. One hundred and six New Zealand White rabbits, weaned at 35 d of age, were assigned to three experimental diets including 0%, 16% and 32% of A. dubius (A0, A16 and A32), and were fed ad libitum until their slaughter at 87 d of age. Drip loss percentage (A0: 2.47, A16: 3.83 and A32: 3.61%; P
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Effects of diets with Amaranthus dubius Mart. ex Thell. on performance and digestibility of growing rabbits
World Rabbit Science, 2015Co-Authors: E Molina, Pedro González-redondo, Rafael Moreno-rojas, Keyla Carolina Montero-quintero, B. Bracho, Adriana Beatriz Sánchez-urdanetaAbstract:The effects on performance and digestibility in growing rabbits were studied by comparing 3 diets containing increasing inclusion rates of amaranth (Amaranthus dubius Mart. ex Thell.): 0 (A0), 160 (A16) and 320 g/kg (A32 diet). Diets were formulated isoproteic and isocaloric to meet the nutrient requirements of growing rabbits. One hundred and thirteen weaned New Zealand White rabbits (mean±standard deviation weight: 760±102 g), individually caged, were randomly assigned to one of the 3 experimental diets. Rabbits were fed ad libitum from 35 to 87 d of age, and health status and performance traits were onitored. The coefficients of total tract apparent digestibility of the diets were measured between 42 and 46 d of age in 12 rabbits per treatment. Amaranthus dubius contained 209 g/kg dry matter (DM) of crude protein and 398 g/kg DM of neutral detergent fibre. There were no significant differences between treatments in weight gain (mean 21.6 g/d) and live weight at the end of the fattening period (mean 1883 g). Daily feed intake was higher (P
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Chemical composition and digestibility of Amaranthus dubius Mart. ex Thell. A promisingsource of nutrients Composición química y digestibilidad de Amaranthus dubius Mart. ex Thell. Una fuente promisoria de nutrientes
2015Co-Authors: Keyla Carolina Montero-quintero, E Molina, Pedro González-redondo, Rafael Moreno-rojas, Adriana Beatriz Sánchez-urdanetaAbstract:The chemical composition and digestibility of leaves, stems and panicles of Amaranthusdubius Mart. ex Thell. were evaluated. We collected the samples in Merecure, estado Miranda, Venezuela, in two collecting seasons (rainy and dry). We determined the proximate composition, dietetic fiber, acid detergent fiber, neutral detergent fiber, lignin and digestibility of the organic matter and of the neutral detergent fiber. We observed the interaction among these factors in most of these analyses, except for the crude fiber and neutral detergent fiber. The highest content of protein (270.90 g.kg -1 ), ashes (211.70 g.kg -1 ) and the highest digestibility of the organic matter (910.80 g.kg -1 ) and of the neutral detergent fiber (770.50 g.kg -1 ) were found in leaves during the rainy season. Protein concentration was lowerin the stems during the dry season (60.80 g.kg -1 ), and the lowest ether extract content(3.60 g.kg -1 ) and lower digestibility of the organic matter (469.90 g.kg -1 ) were found in the stems during the rainy season. The panicle presented the highest ether extract (22.40 g.kg -1 ) and lignin (190.90 g.kg -1 ) contents.
