H
Hiroyuki Ukeda
Researcher at Kōchi University
Publications - 135
Citations - 3706
Hiroyuki Ukeda is an academic researcher from Kōchi University. The author has contributed to research in topics: Formazan & Essential oil. The author has an hindex of 27, co-authored 133 publications receiving 3392 citations. Previous affiliations of Hiroyuki Ukeda include Duksung Women's University.
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Isolation and characterization of free radical scavenging activities peptides derived from casein.
TL;DR: A peptide having the strong free radical scavenging activities was separated from casein protein hydrolysate by chromatographic analyses such as ion-exchange and gel filtration, suggesting that the Glu-Leu sequence is important for the activity.
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Spectrophotometric assay for superoxide dismutase based on tetrazolium salt 3'--1--(phenylamino)-carbonyl--3, 4-tetrazolium]-bis(4-methoxy-6-nitro)benzenesulfonic acid hydrate reduction by xanthine-xanthine oxidase.
TL;DR: The present XTT-based assay had a higher sensitivity than a conventional nitroblue tetrazolium- based assay by a factor of 2.2, suggesting that XTT does not interact with XO.
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Radical-scavenging activities of citrus essential oils and their components: detection using 1,1-diphenyl-2-picrylhydrazyl.
TL;DR: In this article, 34 kinds of citrus essential oils and their components were investigated for radical-scavenging activities by the HPLC method using 1,1-diphenyl-2-picrylhydrazyl (DPPH).
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Spectrophotometric Assay for Superoxide Dismutase Based on the Reduction of Highly Water-soluble Tetrazolium Salts by Xanthine-Xanthine Oxidase
TL;DR: WST-1 was found more useful than WST-8 because it had shown higher sensitivity which was apparently not dependent on the assay pH value in the range pH 8.0-10.2, suggesting that these WSTs were not reduced with XO.
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Volatile constituents of Vietnamese pummelo, orange, tangerine and lime peel oils
TL;DR: The compositions of Vietnamese pummelo (Citrus grandis Osbeck), orange, tangerine (C. reticulata Blanco var. Tangerine) and lime peel oil samples have been investigated by GC and GC-MS as mentioned in this paper.