4.7 Article

Comparative analysis of metabolite profiling and free radical scavenging activity in phenotypic variants of OsCOP1 colored rice mutant seed

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FOOD CHEMISTRY
卷 425, 期 -, 页码 -

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ELSEVIER SCI LTD
DOI: 10.1016/j.foodchem.2023.136465

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COP1 mutation; Rice seed c oloration; Metabolite profiles; Radical scavenging activity; yel-mutant

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This study examined the metabolite profiling of COP1 mutated rice seed (yel-mutant) and found that the total fatty acid content decreased by more than 50% in the yel-mutant compared to the wild-type. The yel-mutant of both cultivars showed significantly higher flavone contents than their wild-type. This study provides useful information for colored rice breeding by revealing the detailed biofunctional metabolic profile under COP1 mutation.
Interest in colored rice has been increasing due to its health benefits. This study examined the metabolite profiling of CONSTITUTIVELY PHOTOMORPHOGENIC 1 (COP1) mutated rice seed (yel-mutant). The wild-type (WT) and the yel-mutant having yellow (y)- and purple (p)-pericarp variants from Chucheong (cc) and Samkwang (sk) cultivars were investigated for differences in bioactive metabolite profiles and free radical scavenging activity. The total fatty acid content decreased by >50% in the yel-mutant against the WT, while no significant difference was observed between yellow- and purple-pericarp variants (p < 0.05). The yel-mutant of both cultivars showed significantly higher flavone contents than their WT (non-detected). Most of the metabolites examined were highly produced in the yel-cc-p and the yel-sk-y than in the other phenotypic variants studied. This study provides further useful information for colored rice breeding by revealing the detailed biofunctional metabolic profile under COP1 mutation in colored rice.

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