Antioxidant activity of colored rice bran obtained at different milling yields.
In this study, we investigated the antioxidant components of three types of colored rice bran--forbidden rice, red rice and green rice--obtained from rice in which the pigment layer had been removed at milling yields of 90%-100% and 80%-90%. An evaluation of the effects of 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical scavenging activity revealed that rice bran obtained from forbidden rice at milling yields of 90%-100% and 80%-90% and rice bran obtained from red rice at milling yields of 90%-100% showed favorable antioxidant activity. The antioxidant components were confirmed to be 3,4-dihydroxy methyl benzoate and p-methoxyphenol and they influence the antioxidant activity of the three types of colored rice bran.
Fujita
Akiko
A
Engineering Division, Satake Corporation, Hiroshima, Japan.
Fujitake
Hironori
H
Kawakami
Koji
K
Nomura
Masato
M
D000840:Anisoles / Q000737:chemistry; D000975:Antioxidants / Q000032:analysis* / Q000737:chemistry*; D001713:Biphenyl Compounds / Q000032:analysis / Q000737:chemistry; D016166:Free Radical Scavengers / Q000032:analysis / Q000737:chemistry; D015394:Molecular Structure; D012275:Oryza / Q000737:chemistry* / Q000145:classification; D010851:Picrates / Q000032:analysis / Q000737:chemistry; D010858:Pigmentation; D010936:Plant Extracts / Q000737:chemistry; D013213:Starch / Q000737:chemistry*; D013237:Stereoisomerism
D000840:Anisoles; D000975:Antioxidants; D001713:Biphenyl Compounds; D016166:Free Radical Scavengers; D010851:Picrates; D010936:Plant Extracts; C009760:mequinol; D013213:Starch; C004931:1,1-diphenyl-2-picrylhydrazyl