T
Tomoyuki Oki
Researcher at Agricultural Research Organization, Volcani Center
Publications - 8
Citations - 851
Tomoyuki Oki is an academic researcher from Agricultural Research Organization, Volcani Center. The author has contributed to research in topics: Cyanidin & Anthocyanin. The author has an hindex of 7, co-authored 8 publications receiving 783 citations.
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Journal ArticleDOI
Involvement of Anthocyanins and other Phenolic Compounds in Radical-Scavenging Activity of Purple-Fleshed Sweet Potato Cultivars
TL;DR: In this article, the 80% ethanol extracts of 5 purple-fleshed sweet potato cultivars were separated into two fractions, anthocyanins- and phenolic compounds-rich fractions, to clarify the contribution of these constituents to the radical-scavenging activity.
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Polymeric procyanidins as radical-scavenging components in red-hulled rice.
TL;DR: The major components responsible for the radical scavenging in the acetone extract from red-hulled rice were identified as procyanidins by acidic hydrolysis, vanillin assay, and Sephadex LH-20 chromatography.
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Physiological Functionality of Purple-Fleshed Sweet Potatoes Containing Anthocyanins and Their Utilization in Foods
TL;DR: In this article, a study on the physiological functionality of purple-fleshed sweet potatoes and their dominant anthocyanin pigments is described, and some foods and beverages in Japan that utilize these characteristics of Anthocyanins pigments are also introduced.
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Characterisation of proanthocyanidins from black soybeans: Isolation and characterisation of proanthocyanidin oligomers from black soybean seed coats
TL;DR: Proanthocyanidin oligomers (dimers to tetramers) were isolated from black soybean seed coats, using Sephadex LH-20 column chromatography and reversed-phase preparative HPLC to identify the main compounds of the procyanidin dimers, trimers, and tetramer compounds.
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Contribution of β-Carotene to Radical Scavenging Capacity Varies among Orange-fleshed Sweet Potato Cultivars
TL;DR: Suya, Nishigoshi, Kikuchi, Kumamoto, and Kumamoto as mentioned in this paper proposed a method to improve the performance of Upland Farming Research at the National Agricultural Research Center for Kyushu Okinawa Region.