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| Registros recuperados: 101 | |
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| Dawood, Mona Gergis. |
| Two field experiments were conducted during two successive seasons (2014/2015 and 2015/2016) at the Experimental Station of National Research Centre, Nubaria district, Beheira Governorate, Egypt, to study the effect of foliar treatment of quinoa plants with trehalose (Tre) (100µM and 500µM) on growth, photosynthetic pigments, seed yield quantity & quality, in fever of nutritional and antioxidant compounds in the yielded quinoa seeds which subjected to water deficiency (skipping two irrigation times at 50 & 60 days after sowing). Water deficiency caused marked decreases in quinoa plant growth parameters (shoot height, fresh and dry weights of shoot/plant) and photosynthetic pigments with marked increases in root growth parameters (root length, fresh... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Antioxidant activity; Drought; Flavonoids; Oil; Phenolics; Protein; Quinoa; Trehalose. |
| Ano: 2018 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/4539 |
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| Velasco,Valeria; Williams,Pamela. |
| Nowadays, consumers are demanding more natural foods, obliging the industry to include natural antioxidants in foods. Natural antioxidants have been used instead of synthetic antioxidants to retard lipid oxidation in foods to improve their quality and nutritional value. This review discusses some aspects of recent research on antioxidant activity of plant extracts and natural compounds to improve meat quality. Many herbs, spices, and their extracts have been reported as having high antioxidant capacity, such as some plants of the Lamiaceae family, e.g., oregano (Origanum vulgare L.), rosemary (Rosmarinus officinalis L.), and sage (Salvia officinalis L.). The antioxidant activity of these plants is attributed to their phenolic compound content, which... |
| Tipo: Journal article |
Palavras-chave: Antioxidant activity; Essential oils; Phenolic compounds; Meat quality. |
| Ano: 2011 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392011000200017 |
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| Miranda,Margarita; Vega-Gálvez,Antonio; Martínez,Enrique A; López,Jéssica; Marín,Rosa; Aranda,Mario; Fuentes,Francisco. |
| Quinoa (Chenopodium quinoa Willd.) in Chile represents a source of germplasm with high nutritional value. However, there is little information available related to quinoa seed quality grown under contrasting environments. In this study we evaluated the changes on seed composition of seeds of two lowland/coastal quinoa genotypes grown under arid (Vicuna) and cold-temperate (Temuco) conditions in Chile. Results showed that in the case of 'Regalona Baer' and 'Villarrica' genotypes the arid location (with irrigation) led to a significant increase (P < 0.05) in grain yield (4.2 and 5.1 t ha-1, respectively), soluble dietary fiber (16.8 ± 0.4 and 28.9 ± 2.1 g kg-1 DM, respectively), vitamin B3 (2.44 ± 0.005 and 2.26 ± 0.04 mg 100 g-1 DM, respectively),... |
| Tipo: Journal article |
Palavras-chave: Chenopodium quinoa; Climate stress; Antioxidant activity; Phenolic compounds; Protein; Mineral content. |
| Ano: 2013 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392013000200004 |
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| Almeida,Tânia Santos de; Araújo,Maria Eduarda Machado; Rodríguez,Lucía González; Júlio,Ana; Mendes,Beatriz Garcia; Santos,Rui Miguel Borges dos; Simões,José Artur Martinho. |
| The influence of common tea preparation procedures (temperature, infusion time, consumption time interval and tea bag/loose-leaf) and the type of water used, on the total phenolic content (TPC), the radical scavenging activity and the α-glucosidase inhibitory activity were assessed. Higher TPC and antioxidant activity were obtained when using lower mineralized waters. Tea bags also evidenced higher antioxidant activity than loose-leaf samples. Under the same conditions (90 ºC and five minutes of infusion time) green tea contains almost twice the quantity of polyphenols and the free radical scavenging ability of black tea. In the α-glucosidase assay all infusions were active (97-100 %). Furthermore, HPLC allowed to identify some of the polyphenols present... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Black tea; Green tea; Antioxidant activity; Α-Glucosidase activity; Water mineralization. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502019000100529 |
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| Sumaya Martinez, Ma. Teresa; Suarez Dieguez, Teodoro; Cruz Cansino, Nelly del Socorro; Alanis Garia, Ernesto; Sampedro, Jose G.. |
| In the world, Mexico is the major producer of prickly pears and also has the largest number in varieties. However, in addition to its highly seasonal production, prickly pears are consumed just by a small segment of the Mexican population. Therefore, the promotion of prickly pears consumption in the form of new derivative products by emphasizing its bioactive properties seems to be a possible solution to its low consumption. Recent studies from European and Asian laboratories showed that some prickly pears varieties have a significant antioxidant activity. In Mexico, prickly pears producers are looking for new ways of commercialization. In this regard, similar studies are underway surveying those varieties from the highly producing Mexican states with the... |
| Tipo: Journal Article |
Palavras-chave: Prickly pears; Antioxidant activity; Innovation; Functional food.; Agribusiness. |
| Ano: 2010 |
URL: http://purl.umn.edu/93913 |
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| Lee,Min Ki; Arasu,Mariadhas Valan; Park,Suhyoung; Byeon,Dong Hae; Chung,Sun-Ok; Park,Sang Un; Yong-,PyoLim; Sun-,JuKim. |
| Light emitting diode (LED) lights play an important role in the plant physiology and alter the metabolites in a significant manner. Glucosinolates (GSLs), polyphenols, flavonoids and antioxidant properties of Chinese cabbage and kale cultivated in varying LED lights were investigated. Analysis revealed 7 aliphatic, 3 indolyl and 1 aromatic GSLs in Chinese cabbage and kale. The total GSL content ranged from 1.5-19.08 and 1.85-24.87 µmol/g DW, and glucobrassicanapin was the predominant GSL (3) in Chinese cabbage, whereas; sinigrin (3.49 µmol/g DW) was in kale. Blue and red LED lights produced significantly higher amount of GSLs in Chinese cabbage and kale respectively. Results revealed higher amount of total polyphenol (3.845 µg/mL) and total flavanoids... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Chinese cabbage; Kale; Glucosinolates; Polyphenols; Flavanoids; Antioxidant activity. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132016000100601 |
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| Yaman,Cennet. |
| ABSTRACT Sage (Salvia officinalis L.) and lemon balm (Melissa officinalis L) are important medicinal plants and their infusions (herbal teas) are the most common form of these plants consumed. In this study, herbal teas of both species cultivated and exported in Anatolia region were prepared using different infusion time (5 and 10 min) and sample amount (2 and 3 g). These herbal teas were analysed for their vitamin C, total phenolics, total flavonoids, total flavanols, free radical scavenging activities (1,1-diphenyl-2-picryl-hydrazyl and hydrogen peroxide), and also twelve minerals (K, Na, Mg, Ca, Fe, B, Ti, Sr, Ba, Li, Ag and Ga) were determined in each sage and lemon balm dry leaves as well as their herbal teas. Vitamin C in the herbal teas varied from... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Antioxidant activity; Minerals; Vitamin C.. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542020000100407 |
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| Silva,Daniel Fernandes da; Pio,Rafael; Soares,Joyce Dória Rodrigues; Elias,Heloisa Helena de Siqueira; Villa,Fabiola; Vilas Boas,Eduardo Valério de Barros. |
| ABSTRACT The aim of this study was to analyze the effect of colored-shade nets on the physicochemical characteristics of physalis in subtropical area. The experimental design was the randomized blocks with a 4 × 5 factorial, being four species of physalis (Physalis peruviana, P. pubescens, P. minima and P. ixocarpa) and four net colors (white, blue, red and black), besides the control under full sun. Titratable acidity (TA), pH, vitamin C, soluble solids (SS), SS/TA relation, total phenolics, anthocyanins and antioxidant capacity were evaluated. It was observed that P. peruviana and P. pubescens have more acid fruits, and P. minima shows vitamin C content higher than the other species. In general, fruits of P. peruviana and P. pubescens have better quality... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Physalis L.; Postharvest quality; Bioactive compound; Antioxidant activity. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052016000300371 |
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| Surget, Gwladys; Roberto, Vania P.; Le Lann, Klervi; Mira, Sara; Guerard, Fabienne; Laize, Vincent; Poupart, Nathalie; Leonor Cancela, M.; Stiger-pouvreau, Valerie. |
| Marine macroalgae represent a valuable natural resource for bioactive phytochemicals with promising applications in therapeutics, although they remain largely under-exploited. In this work, the potential of two marine green macroalgae (Cladophora rupestris and Codium fragile) as a source of bioactive phenolic compounds was explored, and antioxidant, mineralogenic, and osteogenic activities were evaluated. For each species, a crude hydroalcoholic extract (CE) was prepared by solid/liquid extraction and fractionated by liquid/liquid purification into an ethyl acetate fraction (EAF) enriched in phenolic compounds and an aqueous fraction (AF). Antioxidant activity, assessed through radical scavenging activity and reducing power assay, was increased in EAF... |
| Tipo: Text |
Palavras-chave: Ulvophyceae; Phenolic compounds; Antioxidant activity; Mineralogenic activity; Proliferative activity. |
| Ano: 2017 |
URL: https://archimer.ifremer.fr/doc/00381/49282/49839.pdf |
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| Souza,Marília Cristina Gomes de; Morais,Marciana Bizerra de; Andrade,Marcelo da Silva; Vasconcelos,Mayron Alves de; Sampaio,Silvana Saker; Albuquerque,Cynthia Cavalcanti de. |
| ABSTRACT: The objective of this study was to evaluate the physiological and biochemical mechanisms of adaptation of Hyptis suaveolens under osmotic stress due to salinity inoculations with a mycorrhizal fungal species. H. suaveolens seeds were germinated in polyethylene pots containing a substrate associated with or without arbuscular mycorrhizal fungi (AMF). After plant formation, treatments were treated with different salt concentrations (0.0, 35, 70, and 105 mM) and fungi (control and two types of AMF), totaling 12 treatments with three replicates. The experimental design used randomized blocks in a 4 x 3 factorial scheme, totaling 12 treatments with three replicates each. Salinity affected all measured physiological and biochemical variables, and the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Antioxidant activity; Abiotic stress; Salinity; Arbuscular mycorrhizal fungi. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782020000600402 |
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| Cardoso,Priscylla Maria Martins; Mazuco,Renata Alves; Macedo,Lucas Soares Dazzi; Polese,Ariele Abreu Venturini; Barroso,Maria Eduarda de Souza; Baratella,Waléria Gramilich; Andrade,Tadeu Uggere de; Lenz,Dominik; Pereira,Thiago de Melo Costa; Endringer,Denise Coutinho. |
| Contrast-induced nephropathy (NIC) is directly related to increased morbidity and mortality, and its treatment and prevention might be achieved by the administration of antioxidant products. The juçara palmetto (Euterpe edulis Martius) has fruits rich in phenolic compounds, which are known for their antioxidant activity. This work aimed to evaluate the nephroprotective activity of E. edulis pulp in the NIC animal model. The collected fruits were pulped, their contents of polyphenols and anthocyanins were quantified, and their antioxidant activity were evaluated. The nephroprotective effects were determined based on iodine contrast induction and evaluated by biochemical and histological analyses. The results showed that E. edulis pulp was rich in... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Nephroprotection; Euterpe edulis Martius; Polyphenols; Anthocyanins; Antioxidant activity. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502020000100522 |
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| Queiroz-Nazareno,Lailla Sabrina; Alcântara de Miranda,Maria Raquel; Alves-Pinto,Maria Ketully Neyane; Almeida-Lopes,Monica Maria; Moura-Rufino,Maria do Socorro. |
| Abstract The objective of this work was to identify and evaluate the bioactive compounds, as well as the antioxidant potential, present in mature fruits of cambuizeiro (Myrcia multiflora) from the Chapada do Araripe, Brazil. In the fruits were evaluated: vitamin C, total anthocyanins, yellow flavonoids, total polyphenols, total antioxidant activity by the FRAP, DPPH and ABTS methods, and the antioxidant superoxide dismutase (SOD) and catalase (CAT) activity. Cambui had an average vitamin C content of 56.40 mg/100 g, 2869.44 mg/100 g total anthocyanins 2858.50 mg/100 g yellow flavonoids and 1007.64 mg EAG/100 g of total polyphenols. While the total antioxidant activity according to FRAP method was 123.94 μM ferrous sulphate/g, DPPH was 1805.66 g/g EC50,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Antioxidant activity; Bioactive compounds; Plant extractivism; Myrcia multiflora; Myrtacea. |
| Ano: 2019 |
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-28122019000100016 |
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| Prates,Mariana Ferreira Oliveira; Campos,Raquel Pires; Silva,Michelly Morais Barbosa da; Macedo,Maria Lígia Rodrigues; Hiane,Priscila Aiko; Ramos Filho,Manoel Mendes. |
| The effect of jelly processing on the chemical properties, nutrients, antinutritional factors, bioactive compounds, and antioxidant activity of unripe and ripe canjiqueira fruits was evaluated. The fruits were collected from Pantanal regions at two different ripening stages and were used to produce jellies. The processing affected the chemical characteristics and the content of all nutrients, except for the lipids. Moisture and protein content reduced, whereas the energy value increased. The phytic acid found in fresh fruits was eliminated after processing, and the trypsin inhibitors were reduced, especially in ripe fruits. Lectin activity was not verified in unripe and ripe fruits and jellies. The levels of bioactive compounds were reduced after jelly... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Byrsonima cydoniifolia A. Juss.; Jelly; Antioxidant activity. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782015000300399 |
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| Gohara,Aline Kirie; Souza,Aloisio Henrique Pereira de; Gomes,Sandra Terezinha Marques; Souza,Nilson Evelázio de; Visentainer,Jesuí Vergílio; Matsushita,Makoto. |
| ABSTRACT Azuki beans are small red grains rich in several essential nutrients used in traditional dishes in Asia that, nowadays present many applications around the world. This work aimed at evaluating angularis and niponensis cultivars from south region of Brazil. Both cultivars presented proximal composition similar to literature and the majority fatty acids were 18:2n-6, 16:0 and 18:3n-3. All samples showed polyunsatured fatty acids prevalence and nutritional indices and ratios considered adequate for biological system maintenance of a healthy organism. The grains presented significant contents of tocopherols and vitamin E activity, resulting in a high contribution to the dietary reference intake. Significant contents of iron, manganese and zinc were... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Vigna angularis; Alpha-linolenic; Principal component analysis; Vitamin E; Antioxidant activity. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542016000100104 |
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| Silva,Daiana V.; Oliveira,Daniel E. C. de; Resende,Osvaldo; Silva,Marco A. P. da; Barcelos,Keyla R.. |
| ABSTRACT Baru (Dipteryx alata Vogel) is a native tree of the Cerrado. The drying and milling process can be an alternative for the use and conservation of baru fruits. The objective of this study was to evaluate the effect of drying on the nutritional characteristics of the epicarp + mesocarp flour of baru fruits. The fruits were collected in the municipality of Santa Helena de Goiás, Goiás, sanitized and submitted to drying in an oven with air circulation at temperatures of 40, 60, 80 and 100 ºC until they had a constant mass. The analyses were performed in triplicate and the results evaluated by analysis of variance and Tukey test (p ≤ 0.05). Flours produced from dehydrated fruits had a reduction in lipid content (treatments 100 °C), energy value (60 and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Dipteryx alata Vogel; Antioxidant activity; Phenolics; Carotenoids. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662019000100065 |
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| Guiné, Raquel P.F.; Mendes, Mateus; Gonçalves, Fernando. |
| The present work used Artificial Neural Network (ANN) models to correlate beetroot extraction conditions with total phenolic compounds (TPC), anthocyanins (ANT) and antioxidant activity (AOA). The input variables were extraction time, type of solvent, solvent volume/sample mass (VMR) and order of extraction. The ANN models produced showed very good accuracy (R > 94 %), being suitable for data mining using weight analysis techniques. The experiments involved variable conditions: solvents (Methanol, ethanol:water and acetone:water), extraction times (15 and 60 min), VMR (5, 10 and 20), order of extract (3 sequential extractions). The TPC were evaluated by the Folin-Ciocalteu method, ANT by the SO2 bleaching method and AOA following the ABTS method. The... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Food Science; Food Chemistry Phenolic compounds; Antioxidant activity. |
| Ano: 2019 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/5449 |
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| Registros recuperados: 101 | |
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