Catechins
Mostrando 1-12 de 28 artigos, teses e dissertações.
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1. Changes in phenolics and antioxidant capacity during short storage of ready-to-drink green tea (Camellia sinensis) beverage at commercial conditions
ABSTRACT The objective of this research was to evaluate the changes of phenolics and antioxidant capacity of a ready-to-drinkgreen tea beverage during short storage at commercial conditions. The total phenols (Folin-Ciocalteu), total catechins (4-dimethylaminocinnamaldehyde) and total non-catechins (difference between total phenols and total catechins) were
Bragantia. Publicado em: 17/01/2019
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2. Antioxidant effects of tea catechins on the shelf life of raw minced duck meat
Abstract The antioxidant effects of tea catechins (TC) on the shelf life of raw minced duck meat were investigated by measuring the levels of lipid peroxidation, globulin precipitation, and TC residues during refrigeration (4 °C). TC was added to the raw minced duck meat at 0 (T0), 300 (T300), 500 (T500), 800 (T800), or 1000 (T1000) mg/kg. Treated samples
Food Sci. Technol. Publicado em: 22/10/2018
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3. Active compounds and derivatives of camellia sinensis responding to erosive attacks on dentin
Abstract This research explored the potential of Camellia sinensis-derived teas and active compounds to be used as treatments to prevent dentin wear. Human root dentin slabs were randomly assigned to 5 groups (n = 10) as follows: distilled water (DW, control), epigallocatechin-3-gallate (EGCG), theaflavin gallate derivatives (TF), commercial green tea (GT),
Braz. oral res.. Publicado em: 24/05/2018
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4. Melatonin treatment of pre-veraison grape berries modifies phenolic components and antioxidant activity of grapes and wine
Abstract A comprehensive investigation was conducted to determine the effects of exogenous melatonin treatment of pre-veraison grapes on phenolic components and antioxidants of grape berries and wine. The results showed an increase in the concentration of cyanin-3-O-glucoside, peonidin derivatives, and two flavanols [namely (+)-catechins and (−)-epicatechi
Food Sci. Technol. Publicado em: 11/01/2018
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5. Evaluation of the toxicity and hypoglycemic effect of the aqueous extracts of Cnidoscolus quercifolius Pohl
Diabetes mellitus is one of the most common chronic degenerative diseases, and it is estimated to increase worldwide to around 415 million and to impact 642 million in 2040. Research shows that some plants are sources of bioactive compounds against diabetes. Thus, the objective of this work was to evaluate the oral toxicity and the hypoglycemic effect of the
Braz J Med Biol Res. Publicado em: 31/08/2017
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6. Influence of shooting period and extraction conditions on bioactive compounds in Turkish green tea
Abstract The aim of this study was to investigate the influence of different extraction temperatures (75, 85 and 95 °C) and times (3, 5, 10, 15 and 20 min) on bioactive compounds in Turkish green tea produced and classified as Turkuaz, Kardelen and Antikyeşil by ÇAYKUR (the Turkish Tea Board) over three shooting periods. Green tea extracts were subjected
Food Sci. Technol. Publicado em: 12/12/2016
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7. Low dose of green tea catechins improves endothelial function and vascular smooth muscle cell reactivity in obese women
RESUMO OBJETIVO: A alta prevalência de obesidade no mundo traz vários problemas de saúde com a disfunção endotelial como um problema frequente. Investigamos se o consumo de baixa dose de extrato de chá verde (catequinas < 200 mg/dia) pode modificar a função endotelial, o perfil lipídico, a glicemia e a insulina de jejum, a glicose plasmática pós
MedicalExpress (São Paulo, online). Publicado em: 2014-10
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8. Influence of phenolic compounds of Kangra tea [Camellia sinensis (L) O Kuntze] on bacterial pathogens and indigenous bacterial probiotics of Western Himalayas
Phenolic compounds of nutraceutical importance viz., catechins (C), (-)-epicatechin (EC), (-)-epigallocatechin (EGC), (-)-epigallocatechin-3-gallate (EGCG) and (-)-epicatechin-3-gallate (ECG) were estimated in fresh green tea shoots of Camellia sinensis (L) O Kuntze cultivar. The total polyphenols and total catechins were in the range of 219.90 to 317.81 and
Braz. J. Microbiol.. Publicado em: 2013-09
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9. EFEITO in vitro DE Paullinia cupana NO METABOLISMO OXIDATIVO DE ESPERMATOZÓIDES HUMANOS EXPOSTOS AO CLORETO DE METILMERCÚRIO / EFFECT OF Paullinia cupana in vitro oxidative metabolism HUMAN SPERM EXPOSED TO CHLORIDE METHYLMERCURY
Investigations suggests that methylmercury (MeHg) toxicitiy is related to oxidative stress promotion caused by lipid peroxidation of cell membranes as well as genotoxicity. The methylmercury (MeHg) exposition causes production of adverse effects as deterioration of semen quality, testicular degeneration, and male reproductive failure. Since human sperm is a
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 14/02/2012
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10. Morphology and anatomy of Justicia acuminatissima leaves
Justicia acuminatissima (Miq.) Bremek., Acanthaceae, is a subshrub found in northern Brazil, where it is widely used by the population of this region as an anti-inflammatory medicine. Despite this popular use, there is no pharmacognostical data to support the correct identification of this species. We therefore performed a morpho-anatomical, histochemical an
Rev. bras. farmacogn.. Publicado em: 16/11/2012
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11. The cytogenetic effects of black tea and green tea on cultured human lymphocytes
In this study, the cytogenetic effects of black tea and green tea were determined in cultured peripheral blood lymphocytes. Results showed that black tea and green tea induced the mitotic and replication indexes and decreased micronuclei. But these data were not statistically significant for green tea. The effects of black tea on the micronucleus formation a
Brazilian Archives of Biology and Technology. Publicado em: 2011-12
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12. Molecular structure-affinity relationship of dietary flavonoids for bovine serum albumin
The relationship between the molecular structure of dietary flavonoids and their affinities for bovine serum albumin (BSA) were fully investigated by fluorescence titration analysis. The binding process with BSA was significantly affected by the molecular structure of flavonoids under study. The methylation of hydroxyl group in flavonoids enhanced their bind
Revista Brasileira de Farmacognosia. Publicado em: 08/07/2011