Carotenoids play essential roles in plants, e.g., photoprotective
functions during photosynthesis (12). Anthocyanins in plants also
function as photoprotectants (13). Nagira et al. suggested that
changes in the levels of endogenous abscisic acid (ABA), the
metabolic end product of carotenoid, may play an important role
in the induction of anthocyanin synthesis in regenerated torenia
shoots (14). However, no previous reports have described the
correlations between these pigments, and their contents or compositions in Korean pigmented rice have not been determined.
The present study was performed to determine the flavonoids
and carotenoids in black, red, and white rice grains and to analyze
the relationships among their contents. The results of this study
could provide rice breeders and eventually commercial rice
growers new opportunities to promote the production of rice
with enhanced levels of bioactive compounds.
Carotenoids play essential roles in plants, e.g., photoprotectivefunctions during photosynthesis (12). Anthocyanins in plants alsofunction as photoprotectants (13). Nagira et al. suggested thatchanges in the levels of endogenous abscisic acid (ABA), themetabolic end product of carotenoid, may play an important rolein the induction of anthocyanin synthesis in regenerated toreniashoots (14). However, no previous reports have described thecorrelations between these pigments, and their contents or compositions in Korean pigmented rice have not been determined.The present study was performed to determine the flavonoidsand carotenoids in black, red, and white rice grains and to analyzethe relationships among their contents. The results of this studycould provide rice breeders and eventually commercial ricegrowers new opportunities to promote the production of ricewith enhanced levels of bioactive compounds.
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