Isolation and Antioxidative Activities of Caffeoylquinic Acid Derivatives and Flavonoid Glycosides from Leaves of Sweet Potato (Ipomoea batatas L.)
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چکیده
منابع مشابه
Changes in caffeic acid derivatives in sweet potato (Ipomoea batatas L.) during cooking and processing.
There was an obvious decrease in caffeic acid derivatives during the boiling of cube-shaped blocks of sweet potatoes. They also decreased in a mixture of freeze-dried sweet-potato powder and water maintained at room temperature. Ascorbic acid prevented the decrease, supporting the occurrence of an enzyme reaction with polyphenol oxidase (PPO). 5-O-Caffeoylquinic acid (5-CQA, "3-O-caffeoylquinic...
متن کاملThe resin glycosides from the sweet potato (Ipomoea batatas L. LAM.).
Four new and two known ether-soluble resin glycosides were isolated from popular sweet potato (the roots of Ipomoea batatas L. LAM., Kokei 14 go, Convolvulaceae) in Japan. Unlike ester-type dimers, batatins I and II, obtained from other sweet potato (Ipomoea batabas var. batatas), the glycosides were tetra or pentasaccharide monomers in which the sugar moieties are partially acylated by organic...
متن کاملAnthocyanins in Purple Sweet Potato (Ipomoea batatas L.) Varieties
Anthocyanins from purple sweet potatoes can serve as natural colorants due to their high heat and light stability and are commonly used in juices, alcoholic beverages, jams, confectioneries, bread, snacks and noodles. There are several commercially available varieties of purple sweet potatoes, which can vary in storage root size, shape, and color. During the last decade sweet potato cultivars w...
متن کاملAntioxidant and antiproliferative activities of sweet potato (Ipomoea batatas [L.] Lam ‘Tainong 57’) constituents
The aim of this study is to examine possible antioxidant and antiproliferative activities of the different extracts from sweet potato (Ipomoea batatas [L.] Lam ‘Tainong 57’) organs. DPPH staining, total phenolic compounds and flavonoid content, DPPH radical, reducing power method, FTC method, and cell proliferation were all employed. In the DPPH staining, ethanol extract of vein had the highest...
متن کاملThree new pentasaccharide resin glycosides from the roots of sweet potato (Ipomoea batatas).
Three new pentasaccharide resin glycosides, batatosides III-V (1-3), were isolated from the roots of Sweet potato (Ipomoea batatas). Saponification of the crude resin glycoside mixture yielded substituents and simonic acid B. The structures of the isolated compounds (1-3) were established through spectroscopic analyses, including high field NMR spectroscopy and HR-ESI-MS, and chemical correlati...
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ژورنال
عنوان ژورنال: Biomolecules and Therapeutics
سال: 2007
ISSN: 1976-9148
DOI: 10.4062/biomolther.2007.15.1.046