Natural Antioxidants
Mostrando 1-12 de 110 artigos, teses e dissertações.
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1. Consumer awareness of food antioxidants. Synthetic vs. Natural
Abstract Food antioxidants are a core topic of food science due mainly to the consumption of ultra-processed foods, which cannot be overlooked, and represent an importance to modern society. At the same time, natural food antioxidants are gaining attention in studies due to its food safety aspects, that commonly affect food choices. Based on this, the presen
Food Sci. Technol. Publicado em: 2021-06
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2. Base-temperature, plastochron and chia (Salvia hispanica L. - Lamiaceae) yield for different sowing times
ABSTRACT Chia is a plant whose seeds are used in cooking and is a natural source of omega-3 fatty acids, fiber and protein, as well as other important nutritional components such as antioxidants. The objective of this work was to estimate the base temperature, plastochron and chia seed yield for different sowing times in Cruz Alta, Rio Grande do Sul, Brazil.
Rev. Ceres. Publicado em: 2021-04
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3. Optimization of extraction time and temperature for natural antioxidants of öküzgözü grape pomace using various solvent ratios
Abstract Grape pomace, a press residue of winemaking process, has great usage potential in many fields because of its phenolic components such as anthocyanins, antioxidants and dietary fiber. In this study, it was aimed to determine most suitable parameters for production of food colorant from grape pomace (variety of öküzgözü) under different extraction
Food Sci. Technol. Publicado em: 2021-03
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4. Stabilization of Rice Bran in Broiler Feed with Natural and Synthetic Antioxidants and Heat Treatment
ABSTRACT The objective of this study was to evaluate different strategies for the oxidative stabilization of rice bran (RB) in the diet of broiler chickens using natural antioxidant additives, synthetic antioxidant additives and heat treatment on performance, breast meat quality and liver fat content and the nutrient digestibility coefficients. Furthermore,
Braz. J. Poult. Sci.. Publicado em: 20/12/2019
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5. Effects of The Dietary Supplementation of Layer Diets with Natural and Synthetic Antioxidant Additives on Yolk Lipid Peroxidation and Fatty Acid Composition of Eggs Stored at Different Temperatures and Duration
ABSTRACT In this study, the effects of the supplementation of natural and synthetic antioxidant additives in layer diets on egg weight loss, yolk lipid peroxidation (TBARS values) and fatty acid composition of eggs stored at different temperatures and duration were evaluated. In total, 112 48- weeks-old Bovans White layers were randomly allotted to four diet
Braz. J. Poult. Sci.. Publicado em: 14/11/2019
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6. QUÍMICA DO LÚPULO
Hops in the brewing process are important for the chemical and sensorial quality of beer. Hops give to the beer bitterness (due to the presence of humulones and lupulones), natural antioxidants (due to the presence of polyphenols) and flavor (due to the presence of volatiles and essential oils). In this paper, we present, for the first time in Portuguese, a
Quím. Nova. Publicado em: 21/10/2019
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7. EVALUATION OF ANTIOXIDANT ACTIVITY OF NATURAL EXTRACTS ON THE OXIDATIVE STABILITY OF COTTONSEED BIODIESEL
Abstract The objective of this study was to evaluate the antioxidant activity of the natural extracts catechin, curcumin and quercetin on the oxidative stability of methylic cottonseed oil biodiesel. The oxidative stability was evaluated using the Rancimat method (EN 14112) for biodiesel with 500, 1000, 1500, 2000 and 3000 ppm of additives, and compared with
Braz. J. Chem. Eng.. Publicado em: 30/09/2019
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8. Stabilization effect of kraft lignin into PBAT:Thermal analyses approach
ABSTRACT Sterically hindered phenols are an important class of synthetic antioxidants for polymers, commonly incorporated to inhibit polyolefins or polyesters oxidation. However, synthetic antioxidants use is under restricted regulation due to their potential health risk and environmental impacts. Thus, great interest has been attracted to the phenol-based n
Matéria (Rio J.). Publicado em: 16/09/2019
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9. Evaluating the chemical composition and antioxidant activity of three Egyptian seaweeds: Dictyota dichotoma, Turbinaria decurrens, and Laurencia obtusa
Resumo Algas marinhas têm um número crescente de aplicações bem-sucedidas nas indústrias de alimentos, de produtos farmacêuticos e de cosméticos, o que aumenta a importância de se avaliar sua composição química. No presente estudo, três algas marinhas comuns no Egito (Dictyota dichotoma, Turbinaria decurrens e Laurencia obtusa) foram coletadas do
Braz. J. Food Technol.. Publicado em: 12/09/2019
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10. Physicochemical attributes and functional properties of flowers of Brazilian feijoa genotypes
Resumo: O objetivo deste trabalho foi caracterizar flores inteiras dos genótipos de goiabeira-serrana (Acca sellowiana) 'Alcântara', 'Helena', 'Mattos', 'Nonante' e o acesso 2316 quanto à matéria seca, à atividade antioxidante total (AAT), e aos teores de sólidos solúveis, ácido ascórbico, antocianinas totais, flavonoides totais e compostos fenólic
Pesq. agropec. bras.. Publicado em: 19/08/2019
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11. Dietary Effects of Natural Polyphenol Antioxidant on Laying Performance and Egg Quality of Laying Hens Fed Diets with Oxidized Oil
ABSTRACT This study was conducted to investigate the effects of dietary oxidized oil and natural polyphenol antioxidants on laying performances and egg quality of laying hens. A total of two hundred, 61-week-old Lohmann Brown laying hens were divided into five groups, consisting in four replicates of 10 birds each. They were fed one of the five experimental
Braz. J. Poult. Sci.. Publicado em: 09/05/2019
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12. Supplementation of Natural Antioxidants to Reduced Crude Protein Diets for Japanese Quails Exposed to Heat Stress
ABSTRACT The study aimed at comparing the effects of the supplementation of natural antioxidant sources to a reduced crude protein diet on the performance, carcass traits, blood parameters, liver antioxidant enzyme activities and meat lipid peroxidation of Japanese quails exposed to heat stress. A total of 640 14-day-old male Japanese quails were exposed to
Braz. J. Poult. Sci.. Publicado em: 18/04/2019