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곽태순(Tae Soon Kuwak),박희준(Hee Juhn Park) 한국약용작물학회 1997 한국약용작물학회지 Vol.5 No.2
Phytochemical analysis on rice bran and its pitch was performed by the tool of TLC, UV - and IR-spetroscopy, so that it was found that they contained Y-oryzanol and free sterol. GC-MS analysis of free sterol revealed that it was composed of β-sitosterol, campesterol and stigmasterol. Suc-cessive phytochemical analysis of Y-oryzanol revealed that it was composed of ferulic acid ester of tri-terpene and sterol, respectively. Triterpene moieties of Y-oryzanol were identified as follows : cy-cloartanol. cycloartenol, 24-menthylenecycloartanol and unknown triterpene; AND sterol moieties were found to be identical with free sterols. In addition, characteristic absorption band in UV spectrum (220-340nm) was exclusively due to Y-oryzanol. Thus, it was suggested that rice brans of nearly all species of Oryza sativa can be quantitatively analyzed by UV absorption spectrometry, even when water soluble pig-ments was contained in the rice bran.