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V.t.p. Vinod - One of the best experts on this subject based on the ideXlab platform.
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Bioremediation of mercury (II) from aqueous solution by gum Karaya (Sterculia urens): A natural hydrocolloid
Desalination, 2011Co-Authors: V.t.p. Vinod, R.b. Sashidhar, N. Sivaprasad, V.u.m. Sarma, N. Satyanarayana, R. Kumaresan, T. Nagaeswara Rao, P. RaviprasadAbstract:Abstract The biosorption characteristic of mercury ions from aqueous solution using gum Karaya (Sterculia urens), a natural hydrocolloid was explored as a function of pH, biopolymer concentration, contact time and temperature. Langmuir model fitted the equilibrium biosorption data better than Freundlich, Tempkin and Dubinin–Radushkevich isotherm models. The maximum biosorption capacity for gum Karaya was observed to be 62.5 mg g− 1 as calculated by Langmuir model. Adsorption kinetic data were best fitted by pseudo-second-order kinetic model. The negative value of the Gibbs free energy change (ΔGο) indicated that the thermodynamically feasible, spontaneous nature of Hg2+ ions biosorption onto gum Karaya hydrocolloid. The negative value of enthalpy change (ΔHο) and entropy change (ΔSο) revealed that biosorption of Hg2+ ions on gum Karaya hydrocolloid to be an exothermic reaction and shows a decrease in the randomness at the solid/solution interface during the biosorption process of Hg2+ ions by the biopolymer. The biosorbed mercury ions on gum Karaya hydrocolloid were desorbed (95%), by 0.1 M HCl. The metal interaction with biopolymer was assessed by FT-IR and SEM analysis. An irregular and porous structure was observed by SEM analysis before Hg2+ biosorption and upon Hg2+ biosorption showed metal capped structures.
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Comparative amino acid and fatty acid compositions of edible gums kondagogu (Cochlospermum gossypium) and Karaya (Sterculia urens)
Food Chemistry, 2010Co-Authors: V.t.p. Vinod, R.b. Sashidhar, V.u.m. Sarma, S. Satyanarayana RajuAbstract:Abstract Gum Karaya and gum kondagogu are the two important commercial tree gums of India. The amino acids and fatty acid profiles of gum kondagogu and gum Karaya were investigated by preparing their corresponding N- O -bis(trimethylsilyl)trifluoroacetamide (BSTFA) derivatives for amino acids and direct trans -esterification of methyl esters for fatty acids and their subsequent analysis by a GC–MS method. The amino acids, such as, alanine, valine, methionine, tyrosine and tryptophan, were not detected in gum Karaya as they were in gum kondagogu. Interestingly, the aspartic acid content (72.8 ± 3.45 μg/g) of gum kondagogu was higher than that of gum Karaya (64.2 ± 2.44 μg/g). The ratios of saturated to unsaturated fatty acid in gum kondagogu and gum Karaya were found to be 5:1, and 6.6:1, respectively. Among the unsaturated fatty acids, linoleic acid (1.8 ± 0.12 μg/g) and γ-linolenic acid (0.8 ± 0.05 μg/g) were detected only in gum kondagogu. Arachidic acid was not detected in gum Karaya. Additionally, the presence of linoleic acid and γ-linolenic acid in gum kondagogu reinforces its nutritional value.
Hirotada Tsujii - One of the best experts on this subject based on the ideXlab platform.
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hypocholesterolemic effect of Karaya saponin in japanese laying quails coturnix coturnix japonica
Journal of Animal Physiology and Animal Nutrition, 2011Co-Authors: Sadia Afrose, M S Hossain, Hirotada TsujiiAbstract:Summary The effect of Karaya saponin supplementation on the serum and egg yolk cholesterol and fatty acid composition in egg yolk were investigated in Japanese quails. A total of 80 Japanese quails aged 5 weeks were equally divided into four groups of 20. Four levels (0, 25, 50 and 75 mg/kg feed) of Karaya saponin were included in the basal diet and experiment was lasted for 6 weeks. The cholesterol fractions in the egg yolk and serum were measured by enzymatic assay, and the fatty acid composition in egg yolk was determined by gas chromatography. The results revealed that the supplementation of 75 mg/kg Karaya saponin significantly reduced (p < 0.05) cholesterol and triglycerides concentration in serum and egg yolk. High-density lipoprotein-cholesterol was increased, low-density lipoprotein-cholesterol and the atherogenic index were decreased (p < 0.05) by the dietary supplementations. Hepatic cholesterol was reduced (p < 0.05) by the 25 mg/kg Karaya saponin. A higher degree of yolk colour was improved (p < 0.05) when 75 mg/kg saponin was supplemented in the diet. The concentration of polyunsaturated fatty acids (PUFA) in egg yolk was increased (p < 0.05) in a dose-dependent manner in quails fed the supplemented diet than the control diet. The ratio of PUFA to saturated fatty acids in egg yolk was improved (p < 0.05) by 75 mg/kg feed Karaya saponin-supplemented diet. Therefore, the dietary supplementation of 75 mg/kg Karaya saponin may be a feasible means of producing quail eggs with lower cholesterol and higher PUFA content for health conscious consumers.
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effect of dietary Karaya saponin on serum and egg yolk cholesterol in laying hens
British Poultry Science, 2010Co-Authors: Sadia Afrose, M S Hossain, Hirotada TsujiiAbstract:1. The objective of the study was to investigate the effect of dietary Karaya saponin on cholesterol deposition in laying hens. 2. A total of 40 Boris Brown hens were randomly assigned at 20 weeks of age to 4 treatment groups and fed on diets supplemented with 0 (control), 25, 50 or 75 mg/kg Karaya saponin for an 8-week experimental period. 3. After 8 weeks of dietary supplementation, Karaya-saponin-treated groups had significantly lower serum cholesterol (23·0%) and triglycerides but increased high density lipoproteins cholesterol concentration than controls, irrespective of Karaya saponin content in the diet. Egg yolk cholesterol and triglycerides were also significantly reduced by dietary Karaya saponin. Hepatic cholesterol and triglycerides were significantly reduced by Karaya saponin but bile acids concentration in the faeces and liver were significantly increased by Karaya saponin. The concentrations of oleic, linoleic and linolenic acids in the yolk were greater in hens receiving Karaya saponin tha...
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effects of Karaya saponin and rhodobacter capsulatus on yolk cholesterol in laying hens
British Poultry Science, 2010Co-Authors: Sadia Afrose, M S Hossain, T Maki, Hirotada TsujiiAbstract:1. It has been reported that Karaya saponin and Rhodobacter capsulatus individually have hypocholesterolaemic activity in laying hens. This study focuses on the effect of adding Karaya saponin with R. capsulatus to hen's diet with regard to serum and egg yolk cholesterol and triglycerides. 2. A total of 56 Boris Brown laying hens were divided into 7 groups at 20 weeks of age. Combinations of 25, 50, 75 mg kg(-1) Karaya saponin and R. capsulatus 200 and 400 mg kg(-1) were used as treatment groups. 3. After 8 weeks of supplementation, the effects of all the combinations of Karaya saponin and R. capsulatus on serum and egg yolk cholesterol, triglycerides, and high-density lipoprotein (HDL)-cholesterol were greater than either Karaya saponin or R. capsulatus alone. The combination of Karaya saponin 50 mg kg(-1)+ R. capsulatus 400 mg kg(-1) exhibited the greatest reduction of serum (325%) and yolk (225%) cholesterol and the greatest increase of faecal, liver bile acids and yolk fatty acid (oleic, linoleic and linolenic) concentrations. In addition, egg production and yolk colour were significantly improved by the combined use of Karaya saponin and R. capsulatus supplementation. 4. Therefore, the dietary supplementation of Karaya saponin and R. capsulatus may lead to the production of a low-cholesterol egg, with production performance maintained at a standard level.
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dietary Karaya saponin and rhodobacter capsulatus exert hypocholesterolemic effects by suppression of hepatic cholesterol synthesis and promotion of bile acid synthesis in laying hens
Cholesterol, 2010Co-Authors: Sadia Afrose, M S Hossain, Ummay Salma, A G Miah, Hirotada TsujiiAbstract:This study was conducted to elucidate the mechanism underlying the hypolipidemic action of Karaya saponin or Rhodobacter (R.) capsulatus. A total of 40 laying hens (20-week-old) were assigned into four dietary treatment groups and fed a basal diet (as a control) or basal diets supplemented with either Karaya saponin, R. capsulatus, or both for 60 days. The level of serum low-density-lipoprotein cholesterol and the levels of cholesterol and triglycerides in the serum, liver, and egg yolk were reduced by all the supplementations (
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hypocholesterolemic response to Karaya saponin and rhodobacter capsulatus in broiler chickens
Asian-australasian Journal of Animal Sciences, 2010Co-Authors: Sadia Afrose, M S Hossain, Takaaki Maki, Hirotada TsujiiAbstract:Dietary Karaya saponin and Rhodobacter capsulatus (R. capsulatus) are known to have hypocholesterolemic actions, as reported in our previous studies. This study examined possible synergistic hypocholesterolemic effects of Karaya saponin and R. capsulatus in broilers. A total of 150 broilers were allocated into 10 treatments: control, saponin 25 mg, saponin 50 mg, saponin 75 mg, saponin 25 mg+R. capsulatus 0.2 g, saponin 25 mg+R. capsulatus 0.4 g, saponin 50 mg+R. capsulatus 0.2 g, saponin 50 mg+R. capsulatus 0.4 g, saponin 75 mg+R. capsulatus 0.2 g and saponin 75 mg+R. capsulatus 0.4 g. Feed intake and feed efficiency were improved when Karaya saponin and R. capsulatus were synergistically supplemented in the diet. Combinations of Karaya saponin, especially supplementation of Karaya saponin 50 mg+R. capsulatus 0.4 g were shown to have potential hypolipidemic actions in breast and thigh muscle cholesterol and triglycerides, serum cholesterol, low density lipoprotein-cholesterol and triglycerides, as well as improved high density lipoprotein (HDL)-cholesterol (p<0.05). Compared to the control, almost all the treatments significantly increased serum, liver and fecal concentrations of bile acids (p<0.05). Supplementation of both Karaya saponin (75 mg) and saponin 50 mg+R. capsulatus 0.4 g reduced palmitic acid (C16:0) and stearic acid (C18:0) in a similar fashion (p<0.05). The ratios of PUFA:SFA or PUFA+MUFA:SFA in the thigh and breast muscle of broilers were greater in Karaya saponin and R. capsulatus supplemented groups than in the control group. Thus, our study concluded that supplementation of Karaya saponin synergistically with R. capsulatus in the diet of broilers is an effective way to obtain low-cholesterol, low-triglyceride and high HDL-cholesterol enriched poultry meat with a unique fatty acid balance.
R.b. Sashidhar - One of the best experts on this subject based on the ideXlab platform.
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Bioremediation of mercury (II) from aqueous solution by gum Karaya (Sterculia urens): A natural hydrocolloid
Desalination, 2011Co-Authors: V.t.p. Vinod, R.b. Sashidhar, N. Sivaprasad, V.u.m. Sarma, N. Satyanarayana, R. Kumaresan, T. Nagaeswara Rao, P. RaviprasadAbstract:Abstract The biosorption characteristic of mercury ions from aqueous solution using gum Karaya (Sterculia urens), a natural hydrocolloid was explored as a function of pH, biopolymer concentration, contact time and temperature. Langmuir model fitted the equilibrium biosorption data better than Freundlich, Tempkin and Dubinin–Radushkevich isotherm models. The maximum biosorption capacity for gum Karaya was observed to be 62.5 mg g− 1 as calculated by Langmuir model. Adsorption kinetic data were best fitted by pseudo-second-order kinetic model. The negative value of the Gibbs free energy change (ΔGο) indicated that the thermodynamically feasible, spontaneous nature of Hg2+ ions biosorption onto gum Karaya hydrocolloid. The negative value of enthalpy change (ΔHο) and entropy change (ΔSο) revealed that biosorption of Hg2+ ions on gum Karaya hydrocolloid to be an exothermic reaction and shows a decrease in the randomness at the solid/solution interface during the biosorption process of Hg2+ ions by the biopolymer. The biosorbed mercury ions on gum Karaya hydrocolloid were desorbed (95%), by 0.1 M HCl. The metal interaction with biopolymer was assessed by FT-IR and SEM analysis. An irregular and porous structure was observed by SEM analysis before Hg2+ biosorption and upon Hg2+ biosorption showed metal capped structures.
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Comparative amino acid and fatty acid compositions of edible gums kondagogu (Cochlospermum gossypium) and Karaya (Sterculia urens)
Food Chemistry, 2010Co-Authors: V.t.p. Vinod, R.b. Sashidhar, V.u.m. Sarma, S. Satyanarayana RajuAbstract:Abstract Gum Karaya and gum kondagogu are the two important commercial tree gums of India. The amino acids and fatty acid profiles of gum kondagogu and gum Karaya were investigated by preparing their corresponding N- O -bis(trimethylsilyl)trifluoroacetamide (BSTFA) derivatives for amino acids and direct trans -esterification of methyl esters for fatty acids and their subsequent analysis by a GC–MS method. The amino acids, such as, alanine, valine, methionine, tyrosine and tryptophan, were not detected in gum Karaya as they were in gum kondagogu. Interestingly, the aspartic acid content (72.8 ± 3.45 μg/g) of gum kondagogu was higher than that of gum Karaya (64.2 ± 2.44 μg/g). The ratios of saturated to unsaturated fatty acid in gum kondagogu and gum Karaya were found to be 5:1, and 6.6:1, respectively. Among the unsaturated fatty acids, linoleic acid (1.8 ± 0.12 μg/g) and γ-linolenic acid (0.8 ± 0.05 μg/g) were detected only in gum kondagogu. Arachidic acid was not detected in gum Karaya. Additionally, the presence of linoleic acid and γ-linolenic acid in gum kondagogu reinforces its nutritional value.
V.u.m. Sarma - One of the best experts on this subject based on the ideXlab platform.
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Bioremediation of mercury (II) from aqueous solution by gum Karaya (Sterculia urens): A natural hydrocolloid
Desalination, 2011Co-Authors: V.t.p. Vinod, R.b. Sashidhar, N. Sivaprasad, V.u.m. Sarma, N. Satyanarayana, R. Kumaresan, T. Nagaeswara Rao, P. RaviprasadAbstract:Abstract The biosorption characteristic of mercury ions from aqueous solution using gum Karaya (Sterculia urens), a natural hydrocolloid was explored as a function of pH, biopolymer concentration, contact time and temperature. Langmuir model fitted the equilibrium biosorption data better than Freundlich, Tempkin and Dubinin–Radushkevich isotherm models. The maximum biosorption capacity for gum Karaya was observed to be 62.5 mg g− 1 as calculated by Langmuir model. Adsorption kinetic data were best fitted by pseudo-second-order kinetic model. The negative value of the Gibbs free energy change (ΔGο) indicated that the thermodynamically feasible, spontaneous nature of Hg2+ ions biosorption onto gum Karaya hydrocolloid. The negative value of enthalpy change (ΔHο) and entropy change (ΔSο) revealed that biosorption of Hg2+ ions on gum Karaya hydrocolloid to be an exothermic reaction and shows a decrease in the randomness at the solid/solution interface during the biosorption process of Hg2+ ions by the biopolymer. The biosorbed mercury ions on gum Karaya hydrocolloid were desorbed (95%), by 0.1 M HCl. The metal interaction with biopolymer was assessed by FT-IR and SEM analysis. An irregular and porous structure was observed by SEM analysis before Hg2+ biosorption and upon Hg2+ biosorption showed metal capped structures.
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Comparative amino acid and fatty acid compositions of edible gums kondagogu (Cochlospermum gossypium) and Karaya (Sterculia urens)
Food Chemistry, 2010Co-Authors: V.t.p. Vinod, R.b. Sashidhar, V.u.m. Sarma, S. Satyanarayana RajuAbstract:Abstract Gum Karaya and gum kondagogu are the two important commercial tree gums of India. The amino acids and fatty acid profiles of gum kondagogu and gum Karaya were investigated by preparing their corresponding N- O -bis(trimethylsilyl)trifluoroacetamide (BSTFA) derivatives for amino acids and direct trans -esterification of methyl esters for fatty acids and their subsequent analysis by a GC–MS method. The amino acids, such as, alanine, valine, methionine, tyrosine and tryptophan, were not detected in gum Karaya as they were in gum kondagogu. Interestingly, the aspartic acid content (72.8 ± 3.45 μg/g) of gum kondagogu was higher than that of gum Karaya (64.2 ± 2.44 μg/g). The ratios of saturated to unsaturated fatty acid in gum kondagogu and gum Karaya were found to be 5:1, and 6.6:1, respectively. Among the unsaturated fatty acids, linoleic acid (1.8 ± 0.12 μg/g) and γ-linolenic acid (0.8 ± 0.05 μg/g) were detected only in gum kondagogu. Arachidic acid was not detected in gum Karaya. Additionally, the presence of linoleic acid and γ-linolenic acid in gum kondagogu reinforces its nutritional value.
Vinod V.t. Padil - One of the best experts on this subject based on the ideXlab platform.
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Dodecenylsuccinic anhydride derivatives of gum Karaya (Sterculia urens): preparation, characterization, and their antibacterial properties.
Journal of agricultural and food chemistry, 2015Co-Authors: Vinod V.t. Padil, Chandra Senan, Miroslav ČerníkAbstract:Esterifications of the tree-based gum, gum Karaya (GK), using dodecenylsuccinic anhydride (DDSA) were carried out in aqueous solutions. GK was deacetylated using alkali treatment to obtain deacetylated gum Karaya (DGK). The DGK and its DDSA derivative were characterized using gel permeation chromatography/multiangle laser light scattering (GPC/MALLS), attenuated total reflectance–Fourier transform infrared spectroscopy (ATR-FTIR), scanning electron microscopy (SEM), proton nuclear magnetic resonance spectroscopy (1H NMR), thermogravimetric analysis (TGA), differential scanning calorimetry (DSC) analysis, and rheological studies. The degree of substitution was found to be 10.25% for DGK using 1H NMR spectroscopy. The critical aggregation concentration of DDSA-DGK was determined using dye solubilization and surface tension methods. The antibacterial activity of the DDSA-DGK derivative was then investigated against Gram-negative Escherichia coli and Pseudomonas aeruginosa and Gram-positive Staphylococcus aur...
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green synthesis of copper oxide nanoparticles using gum Karaya as a biotemplate and their antibacterial application
International Journal of Nanomedicine, 2013Co-Authors: Vinod V.t. Padil, Miroslav CernikAbstract:Background Copper oxide (CuO) nanoparticles have attracted huge attention due to catalytic, electric, optical, photonic, textile, nanofluid, and antibacterial activity depending on the size, shape, and neighboring medium. In the present paper, we synthesized CuO nanoparticles using gum Karaya, a natural nontoxic hydrocolloid, by green technology and explored its potential antibacterial application.
