Natural Product
Mostrando 13-24 de 851 artigos, teses e dissertações.
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13. Effects of pectin and tomato paste as a natural antioxidant on inhibition of lipid oxidation and production of functional chicken breast sausage
Abstract In this study antioxidant effects of pectin and tomato paste (TP) on lipid oxidation and production of functional chicken breast sausage during refrigerated storage for 14 days were evaluated. Raw chicken sausage samples were enriched with different levels of TP containing 0, 1, 2 and 10% and 1% pectin, and peroxide value (PV), thiobarbituric acid r
Food Sci. Technol. Publicado em: 2020-12
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14. Determination of Total Antioxidant Capacity Using Thiamine as a Natural Fluorescent Probe
This work proposes a spectrofluorometric method for the determination of total antioxidant capacity (CAO) in beverage samples, based on inhibition of thiochrome formation (λex = 370 nm, λem = 440 nm); a product of thiamine (vitamin B1) oxidation from K3Fe(CN)6. In the development of the method, gallic acid (GA) was used as a reference, and inhibition of th
J. Braz. Chem. Soc.. Publicado em: 2020-12
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15. Impact of antioxidant herbal salts on the lipid fraction, acceptability and consumption intent of roasted Dolphinfish
Abstract The impact of herbal salt as a natural antioxidant on the lipids of roasted Dolphinfish (Coryphaena hippurus Linnaeus, 1758), as well as in the sensory characteristics of this food was evaluated after using refined or herbal salts, by analyzing the differences in its fatty acid contents, thiobarbituric acid reactive substances (TBARS), product accep
Food Sci. Technol. Publicado em: 2020-12
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16. Elaboration of a natural sweetener using Erythritol/Stevia
Abstract The food industry always searches for innovation, product improvement, quality and customer satisfaction. In relation to sweeteners, this search had an expressive increase in recent times due to the increase of diseases caused by the excessive consumption of sugar. Most tabletop sweeteners marketed in Brazil have bulking agents with characteristics
Food Sci. Technol. Publicado em: 2020-06
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17. Methodology Development and Validation of Amphotericin B Stability by HPLC-DAD
The high worldwide consumption of antibiotics and their complex impurity profiles has drawn the attention of the scientific community to the development and validation of stability methods for these drugs. Amphotericin B is an antibiotic that is a natural fermentation product of bacterium Streptomyces nodosus, used as a broad-spectrum antifungal agent, and i
J. Braz. Chem. Soc.. Publicado em: 2020-05
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18. Diversity of the diterpenes in the leaves of Xylopia laevigata (Annonaceae) and their cytotoxicities
The phytochemical investigation of the hexane extract which was obtained from the leaves of Xylopia laevigata (Annonaceae) produced six terpenes. Among these, five diterpenes named abieta-7,13-dien-3-one, ent-7β-acetoxy-16β-hydroxy-kaurane, 4-epi-cupressic acid, powerol, and labdorffianic acid B, and one oxygenated sesquiterpene, spathulenol. This is the f
Quím. Nova. Publicado em: 2020-04
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19. Selectivity of registered pesticides for the corn crop on immature stages of Trichogramma pretiosum (Hymenoptera: Trichogrammatidae)
RESUMO Trichogramma pretiosum Riley, 1879 (Hymenoptera: Trichogrammatidae) é parasitoide de ovos de lepidópteros praga no milho, Zea mays L. (Poaceae), no Brasil. Produtos químicos usados na agricultura podem ser tóxicos para este agente de controle biológico. O objetivo do presente estudo foi avaliar a longevidade, parasitismo e emergência de T. preti
Ciênc. agrotec.. Publicado em: 20/01/2020
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20. Anti-Biofilm and Hemolytic Effects of Cymbopogon citratus (Dc) Stapf Essential Oil
Abstract Objective: To perform chemical analysis and to evaluate the anti-biofilm and hemolytic effect of the essential oil of Cymbopogon citratus. Material and Methods: Gaseous chromatography coupled to mass spectrometer was performed for chemical characterization of the essential oil. To verify the antimicrobial action, the Minimum Inhibitory Concentrati
Pesqui. Bras. Odontopediatria Clín. Integr.. Publicado em: 13/01/2020
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21. Determining Factors Affecting Consumer’s Decision to Purchase Organic Chicken Meat
ABSTRACT In the present study, the effect of consumers’ perception levels (product, price, and benefit perception), consciousness levels (health, environment, and animal welfare), and sociodemographic characteristics on the purchase decision of organic chicken meat were examined.Logistic regression analysis was used to determine the relationship between th
Braz. J. Poult. Sci.. Publicado em: 20/12/2019
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22. Effects of Dietary Supplementation with Red Algae Powder (Chondrus crispus) on Growth Performance, Carcass Traits, Lymphoid Organ Weights and Intestinal pH in Broilers
ABSTRACT The aim of this study was to determine the effects of dietary supplementation with red algae powder (Chondrus crispus) on the growth performance, carcass traits, lymphoid organ weights and intestinal pH y in broiler chickens. A total of 300 1-day-old B34 line male broiler chickens were randomly allotted to three treatments, four replicates per treat
Braz. J. Poult. Sci.. Publicado em: 20/12/2019
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23. O significado socioeconômico do turismo na natureza: o Pantanal diante das normas reguladoras do Estado
Resumo O Pantanal é um bioma sazonal, de habitats inundáveis, ecologicamente produtivos, com biodiversidade exuberante, que tem atraído o turismo na natureza. Ambiente protegido, é o principal produto do mercado do ecoturismo e seu crescente fator socioeconômico para a gente local. O Pantanal ainda oferece uma complexa diversidade ambiental e biológica
Soc. estado.. Publicado em: 09/12/2019
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24. RP-HPLC and LC–MS–MS determination of a bioactive artefact from Ipomoea pes-caprae extract
Abstract Solvents play important and critical role in natural product chemistry and could generate artefacts during the extraction and purification of metabolites from a biological matrix. This study aimed to correlate the chromatographic profile with biological activity of Ipomoea pes-caprae (L.) R. Br., Convolvulaceae, extracts obtained with hydroethanolic
Rev. bras. farmacogn.. Publicado em: 09/12/2019