Isolation and structure of diglycosylsterols and triglycosylsterols in rice bran.
Novel oligoglycosylsterols, a series of sterylglycosides, were detected in the glycolipids of rice bran, and di- and triglycosylsterols were isolated and their structures were investigated. The principal sterol components were sitosterol, campesterol and stigmasterol; glucose was the only component sugar. The major species of diglycosylsterol and triglycosylsterol were characterized as D-glucopyranosyl-(beta 1 leads to 4)-D-glucopyranosyl-(beta 1 leads to 3')-sitosterol, i.e. cellobiosylsitosterol, and D-glucopyranosyl-(beta 1 leads to 4)-D-glucopyranosyl-(beta 1 leads to 4)-D-glucopyranosyl-(beta 1 leads to 3')-sitosterol, i.e. cellotriosylsitosterol, respectively.
D055598:Chemical Phenomena; D002621:Chemistry; D002849:Chromatography, Gas; D008401:Gas Chromatography-Mass Spectrometry; D005960:Glucosides / Q000302:isolation & purification; D008745:Methylation; D012275:Oryza / Q000032:analysis; D012855:Sitosterols / Q000145:classification / Q000302:isolation & purification*
D005960:Glucosides; D012855:Sitosterols