Results 181 to 190 of about 24,622 (226)
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sPhospholipase A2 is inhibited by anthocyanidins
Journal of Neural Transmission, 2009Epidemiological studies suggest that nutritional antioxidants may reduce the incidence of neurodegenerative disorders and age-related cognitive decline. Specifically, protection against oxidative stress and inflammation has served as a rationale for promoting diets rich in vegetables and fruits. The present study addresses secretory phospholipase A(2) (
Andrea, Dreiseitel +6 more
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Anthocyanidin variation in Clarkia
Biochemical Systematics and Ecology, 1986Abstract Previous reports of anthocyanin variation in Clarkia indicated intersectional differentiation, suggesting an additional marker for evaluating infrageneric relationships. Therefore, an investigation of anthocyanidin content of 19 species representing seven of the 10 sections was conducted.
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Fluorescent Products of Anthocyanidin and Anthocyanin Oxidation
Journal of Agricultural and Food Chemistry, 2020We found that the oxidation of cyanidin with hydrogen peroxide, tert-butyl hydroperoxide, 2,2'-azobis(2-methylpropionamidine), 3-morpholinosydnonimine hydrochloride, sodium hypochlorite, Fe3+, and Fe2+ induced the appearance of a new fluorescence band, centered at 525-540 nm when excited at 470-490 nm.
Grzegorz Bartosz +2 more
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Inhibitory actions of bilberry anthocyanidins on angiogenesis
Phytotherapy Research, 2010AbstractThe aim of this study was to examine the antiangiogenic properties and antioxidant activities (a) of the main anthocyanidins (delphinidin, cyanidin and malvidin) found as constituents in Vaccinium myrtillus (bilberry) anthocyanosides (VMA) and (b) of N‐acetyl‐l‐cysteine (NAC).
Nozomu, Matsunaga +4 more
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Total synthesis of anthocyanidinsviaHeck reaction
Natural Product Research, 2006Anthocyanidin moiety was obtained by cyclization of a 2-hydroxychalcone prepared by the Heck approach to the synthesis of flavonoids. 1-(3,4-dimethoxyphenyl)-prop-2-en-1-one has been used as a coupling partner along with o-acetoxyiodobenzene in the Heck reaction.
BIANCO, Armandodoriano +2 more
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Dietary Anthocyanidins and Bone Health
2013There is evidence to suggest that fruit and vegetable consumption is beneficial for bone health. Anthocyanins are bioactive flavonoid compounds found mostly in fruits, particularly berries, some vegetables, and wine. A diet rich in anthocyanidins is thought to have multiple health benefits, and recent studies have shown that high intakes of ...
Claire J. Macdonald-Clarke +1 more
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Leuko‐ und Pseudoverbindungen der Anthocyanidine
Justus Liebigs Annalen der Chemie, 1958AbstractDie Hydrierung des Taxifolins (X) zum Leuko‐cyanidin‐hydrat (VIII) gelingt über den Tetrabenzyläther. Weitere Hydrierung führt zum Catechin. Das Acetat von VIII ist strukturverschieden vom Hydrierungsprodukt XIV des schon früher aus Cyanidin gewonnenen Hexaacetyl‐pseudo‐cyanidins (XIII). Die Formeln XIII und XIV sind damit bewiesen. XIV und XVI
Karl Freudenberg, Klaus Weinges
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Conversion of Leucoanthocyanins into the Corresponding Anthocyanidins
Science, 1964Purified preparations of leucoanthocyanins from several sources were heated in butanol-hydrochloric acid solutions from 50° to 90°C and the rate of production of cyanidin was measured. From the temperature dependence of this rate, the calculated energy of activation was of the order of magnitude of 20,000 calories.
M A, JOSLYN, J L, GOLDSTEIN
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Sodium borohydride reduction of anthocyanidins
Phytochemistry, 1972Abstract The reduction of anthocyanidins with NaBH 4 in EtOH or MeOH produces inter alia racemates of epicatechins. Thus, the (±) racemates of 3′,5′-di- O -methylepigallocatechin, 3′- O -methylepigallocatechin, and 3′- O -methylepicatechin have been identified as the reduction products of malvidin, petunidin, and peonidin, respectively, by their ...
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Phytochemistry, 1969
Abstract During the conversion of leucoanthocyanidins into anthocyanidins with alcoholic HCl small amounts of additional anthocyanidins are formed, which appear to be simple ethers of the anthocyanidins and the alcohol used in the medium. The chromatographic characteristics of such derivatives produced from different leucoanthocyanidins have been ...
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Abstract During the conversion of leucoanthocyanidins into anthocyanidins with alcoholic HCl small amounts of additional anthocyanidins are formed, which appear to be simple ethers of the anthocyanidins and the alcohol used in the medium. The chromatographic characteristics of such derivatives produced from different leucoanthocyanidins have been ...
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