The Experts below are selected from a list of 321 Experts worldwide ranked by ideXlab platform
Javier Tardio - One of the best experts on this subject based on the ideXlab platform.
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valorization of wild strawberry Tree Fruits arbutus unedo l through nutritional assessment and natural production data
Food Research International, 2011Co-Authors: Brigidamaria Ruizrodriguez, Patricia Morales, Virginia Fernandezruiz, M C Sanchezmata, Montana Camara, Carmen Diezmarques, Manuel Pardodesantayana, Maria Molina, Javier TardioAbstract:Abstract Arbutus wild berries have been traditionally collected and appreciated in the Mediterranean region, although it is actually considered an underutilized fruit-Tree species. Increasing the scarce knowledge about its nutritional composition and natural production may interest a broad range of scholars, such as ethnobotanists, chemists, nutritionists and anthropologists. The present study aims to provide original data on the nutritional value and the biomass production of wild strawberry-Tree Fruits, studying the variation of these characteristics in Fruits harvested in different years, from two different Spanish areas. Macro and micronutrient composition of mature Arbutus unedo Fruits have been analyzed, with particular attention to the content of some bioactive compounds (fiber, vitamin C as ascorbic and dehydroascorbic acids, total phenolics, carotenoids, including lycopene) and the organic acids profile. The contribution to recommended dietary allowances (RDAs) of this exotic fruit has also been calculated. Fruit crop volume per Tree has been estimated as well in the wild strawberry-Tree populations surveyed to provide a general framework for discussing the agronomic potential of the species. A wide variability in the nutrient composition of strawberry-Tree Fruits was found which shows that the analysis of many different samples from different origins and seasons are required to provide average reliable data about the chemical composition of wild Fruits. From the results obtained, strawberry-Tree Fruits can be considered a very good source of health promoting compounds as vitamin C and dietary fiber (202.6 mg/100 g and 42.6% minimum contribution to RDAs, respectively). They are also rich in total available carbohydrates, sugars, potassium and secondary metabolites, such as phenolic compounds, being poor in lipids and Na. These results, together with its high production may help to reinforce its consumption, as an alternative to the Fruits available in the market or a source of bioactive compounds for dietary supplements or functional foods.
Maria Rosario Bronze - One of the best experts on this subject based on the ideXlab platform.
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high pressure co2 assisted extraction as a tool to increase phenolic content of strawberry Tree arbutus unedo extracts
Journal of CO 2 Utilization, 2018Co-Authors: Agostinho Manuel Dos Reis Carrondo Alexandre Alexandre, Ana A Matias, Catarina M M Duarte, Maria Rosario BronzeAbstract:Abstract Arbutus unedo Fruits, commonly known as strawberry-Tree Fruits, can be used as raw material for the development of bioactive ingredients, besides other traditional applications. In this work, a high-pressure CO2 Assisted Extraction process (HPCDAE) was investigated in order to find the best process conditions to obtain extracts with a higher phenolic content (TPC) and antioxidant activity. The process parameters studied were pressure (100, 175 and 250 bar), temperature (40 °C, 55 °C and 70 °C) and volume solid:liquid (S:L)/CO2 ratios (20, 50 and 80%) and the extracts recovered compared with the extract obtained with a S:L conventional extraction. Results show that when the highest pressure (250 bar) temperature (70 °C) and lowest S:L/CO2 ratio (20%) are used, HPCDAE increases 1.41 times TPC of the extracts, compared to conventional S-L extract. A significant increase in the extraction of galloyl hexoside and 5-O-galloylquinic acid were observed after HPCDAE application. The intensification of both compounds extraction may be related with the increase in the antioxidant activity of the extracts. The results from this study show that HPCDAE is a promising tool to intensify the extraction of bioactive compounds from strawberry Tree Fruits.
S. De Pascual-teresa - One of the best experts on this subject based on the ideXlab platform.
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Characterization of the antioxidant composition of strawberry Tree (Arbutus unedo L.) Fruits
Journal of Food Composition and Analysis, 2008Co-Authors: Kathrin Pallauf, Julián C. Rivas-gonzalo, M.d. Del Castillo, M.p. Cano, S. De Pascual-teresaAbstract:The Fruits of the strawberry Tree (Arbutus unedo L.) are consumed mainly as processed product, but may be a good source of antioxidants if consumed as fresh fruit. The aim of the present study was to identify and quantify the antioxidant components present in strawberry Tree Fruits, including flavonoids, vitamins C and E and carotenoids. The Fruits are a very good source of antioxidants precisely because they have a high flavonoid content (32.37 mg/100 g edible portion) and, within this group of antioxidant compounds, proanthocyanidins are the most abundant, representing more than 80% of the total flavonoid contents. Anthocyanins are also present as glycosides of cyanidin and delphinidin, with cyanidin-3-galactoside the most abundant. Other antioxidants present in this fruit were ellagic acid and its diglucoside derivative. Vitamin C, vitamin E and carotenoids were also identified and quantified.
Isabel C F R Ferreira - One of the best experts on this subject based on the ideXlab platform.
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arbutus unedo l and ocimum basilicum l as sources of natural preservatives for food industry a case study using loaf bread
Lwt - Food Science and Technology, 2018Co-Authors: Sallawi Takwa, Cristina Caleja, Joao C M Barreira, Marina Sokovic, Lotfi Achour, Lillian Barros, Isabel C F R FerreiraAbstract:Abstract The aim of this work was to demonstrate the antioxidant potential, antimicrobial and the absence of toxicity of the ethanol extracts obtained from strawberry Tree Fruits and basil leaves, using optimal conditions. Subsequently, the extracts rich in catechin, from strawberry Tree Fruits, and rosmarinic acid from basil leaves, were incorporated as natural ingredients in loaf bread samples, with two objectives: to functionalize bread, introducing bioactive properties; and as natural ingredients with preservation capacity. Three more groups: control (without addition of any additive), bread incorporated with ascorbic acid - E300 and bread incorporated with potassium sorbate - E202 and for each group were 3 different times were analyzed: immediately after incorporation and after 3 and 7 days. Both natural extracts presented antioxidant activity, without toxicity up to the maximal tested dose (400 μg/mL), and the main compounds present were catechin and rosmarinic acid, respectively. The breads incorporated with the natural extracts, especial basil, presented a higher antioxidant capacity than the loaf breads incorporated with ascorbic acid and potassium sorbate. Overall, the obtained results demonstrate that these extracts could be used in the development of new bread replacing the synthetic preservatives, without interfering with nutritional characteristics.
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assessment of the stability of catechin enriched extracts obtained from arbutus unedo l Fruits kinetic mathematical modeling of ph and temperature properties on powder and solution systems
Industrial Crops and Products, 2017Co-Authors: Bianca R Albuquerque, Lillian Barros, Miguel Prieto, Isabel C F R FerreiraAbstract:Arbutus unedo L. (strawberry-Tree) Fruits could be considered an alternative source of flavan-3-ols, in particular catechin and its derivatives. These compounds are known for a variety of applications in food (especially as food additives), pharmaceutical and cosmetic industry. Therefore, catechin-enriched extracts (60% flavan-3-ols and 22% of catechin) were obtained from A. unedo Fruits and further submitted to physical and chemical stability studies, considering the main affecting variables (time, temperature and pH): i) a stability study of the extracts during the obtaining and storage procedures (powder system); and ii) a stability study of the extracts in simulated food environment (aqueous solution system). The measured responses were the flavan-3-ols and catechin contents, determined by High performance liquid chromatography couple to a diode array detector (HPLC-DAD), and the antioxidant activity of the extracts evaluated by hydrophilic assays. Mechanistic and phenomenological equations were used to describe the responses, and the optimal conditions for flavan-3-ols (including catechin) stability as powder extract during a month were pH = 5.4 and T = −20 °C; while its stability in aqueous solution remained during the 24 h of application at pH <4 and T < 30 °C. These results provide useful information for: i) potential industrial use of A. unedo Fruits as alternative sources of flavan-3-ols; and ii) shelf-life calculations and catechin loss predictions at specific conditions of temperature and pH. Finally, the results obtained showed a certain agreement with previous reports of catechin stability studies in powder and solution systems, but providing a new alternative source: A. unedo Fruits.
Sezai Ercisli - One of the best experts on this subject based on the ideXlab platform.
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exploring antioxidant activity organic acid and phenolic composition in strawberry Tree Fruits arbutus unedo l growing in morocco
Plants (Basel Switzerland), 2020Co-Authors: Hafida Zitouni, Lahcen Hssaini, Rachida Ouaabou, Manuel Viudamartos, Francisca Hernandez, Sezai Ercisli, Said Ennahli, Zerhoune Messaoudi, Hafida HanineAbstract:This study aimed to explore the main biochemical components and the antioxidant capacity of five strawberry Tree Fruits using three antioxidant essays within the ecotypic comparison scheme, to find out the most valuable fruit presenting disease-preventing properties. Total phenols, total flavonoids, total anthocyanins, antioxidant activity (DPPH, ABTS, and β-Carotene bleaching assays), pH, titratable acidity, soluble solids, and moisture content were investigated in five strawberry Tree genotypes belonging to several areas in Morocco. Phenolic compounds were also identified using high performance chromatography (HPLC), with a diode array detector (DAD). High significant differences (p ˂ 0.05) were revealed among the examined genotypes regarding their total phenols (25.37-39.06 mg gallic acid equivalents (GAE)/g Dry weight (DW), total flavonoids (3.30-7.07 mg RE/g Dry weight (DW), total anthocyanins (0.15-0.64 mg cya-3-glu/100g Dry weight (DW), pH (2.44-3.92), titratable acidity (0.65-1.01 g malic acid/100g Fresh weight (FW), and soluble solids (14.83-18.53%). The average radical scavenging capacity, assessed using three methods, exhibited the following concentration ranges: 3.33-21.08, 2.25-19.58, and 1.08-13 mg Ascorbic Equivalent (AAE/g Dry weight(DW) for the DPPH scavenging test, ABTS, and β-carotene bleaching, respectively. Seventeen phenolic compounds were identified in sampled cultivars. Gallocatechol and catechin were found to be the major phenolic compounds. The correlation matrix revealed significant correlations among investigated variables, particularly ABTS and DPPH. The principal component analysis showed that the first three components formed 90.25% of the total variance. The following variables: chlorogenic acid, ellagic acid derivative, ellagic acid, rutin, and cyanidin-30.5-diglucoside, were the most involved in the total variance. The results revealed highly promising physico-biochemical profiles within the studied strawberry Tree genotypes.
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phytochemical components and bioactivity assessment among twelve strawberry arbutus unedo l genotypes growing in morocco using chemometrics
Foods, 2020Co-Authors: Hafida Zitouni, Lahcen Hssaini, Manuel Viudamartos, Francisca Hernandez, Sezai Ercisli, Zerhoune Messaoudi, Hamza Ourradi, Hafida HanineAbstract:There are not many exhaustive works emphasizing the amount of genetic diversity among the strawberry Tree (Arbutus unedo L.) genotypes in Morocco. This work aims to assess the biochemical composition of strawberry Tree Fruits, as well as to establish the variation of this composition among them. In this study, total phenols (TP), total flavonoids (TF), condensed tannins (CT) and hydrolyzable tannins (HT), total anthocyanins (TA), and free radical scavenging activity through ABTS were investigated in strawberry Tree Fruits. Furthermore, qualitative and quantitative analyses of individual phenolic compounds by high-performance liquid chromatography (HPLC) were carried out. Color parameters such as lightness (L*), Chroma (c*), and hue angle (h°) were also investigated. All studied variables showed highly significant differences among all samples with the exception of hydrolyzable tannins and chromatic coordinates. TP varied from 22.63 ± 1.74 to 39.06 ± 2.44 mg GAE/g DW, TF varied from 3.30 ± 0.60 to 8.62 ± 1.10 mg RE/g DW, and TA ranged between 0.12 ± 0.06 and 0.66 ± 0.15 mg cya-3-glu/100 g DW. In addition, CT and HT amounts were in the range of 10.41 ± 1.07–16.08 ± 1.50 mg TAE/g DW and 4.08 ± 2.43–6.34 ± 3.47 TAE/g DW, respectively. Moreover, the IC50 value (ABTS) ranged between 1.75 and 19.58 mg AAE/g DW. 17 phenolic compounds were detected in strawberry Tree Fruits. Gallocatechol and catechin were the most abundant phenolic compounds. Matrix of correlations revealed significant positive and negative correlations among variables particularly c*, a*, and b*. Principal component analysis (PCA) showed that the first three components formed than 68% of the total inertia. The following variables gallic acid, protocatechuic, gallocatechin, gallic acid derivative, chlorogenic acid, syringic acid, ellagic acid derivative II, L*, and h* were the most involved in the total variance explained. Hierarchical clustering classified samples into one main cluster, with a single branch. The results highlight a high biochemical diversity within studied strawberry genotypes, which is probably more genetically related.
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chemical composition antioxidant activities and total phenolic content of arbutus andrachne l fam ericaceae the greek strawberry Tree Fruits from turkey
Journal of Food Composition and Analysis, 2010Co-Authors: Sedat Serce, Mustafa Ozgen, Ayfer Alkan Torun, Sezai ErcisliAbstract:Abstract Arbutus andrachne L. and A. unedo L. are two members of the Ericaceae family. The species are distributed in coastal parts of Anatolia and have edible Fruits. We determined several characteristics of eight A. andrachne accessions collected from different parts of the Mediterranean regions of Anatolia. A. unedo is also represented with a sample. Notable differences were found among A. andrachne accessions. On average, the fruit width and length were 12.3 and 10.8 mm, respectively. All of the element concentrations that were tested varied considerably. The average of the total organic acids was 0.47 g/100 g fruit. Among the organic acids measured, malic acid had the highest content (0.34 g/100 g fruit) followed by ascorbic (0.10 g/100 g fruit) and citric acids (0.03 g/100 g fruit). The average for total sugars of the A. andrachne accessions was 16.38 g/100 g fruit. Fructose was the main sugar (average of 9.75 g/100 g fruit) followed by glucose (5.33 g/100 g fruit) and sucrose (1.19 g/100 g fruit). Among the A. andrachne accessions tested, the total phenolics ranged from 2422 to 4102 μg gallic acid/g fresh weight (fw) with an average of 3343 μg gallic acid equiv. g/fw. Antioxidant activities, determined by TEAC (Trolox equivalent antioxidant capacity) and FRAP (Ferric reducing ability of plasma), reached up to 36.1 and 29.5 μmol Trolox equiv. (TE) g/fresh weight, respectively. It can thus be concluded that A. andrachne is a good source of phenols and antioxidants.
