Nonpolar Lipids of Amaranthus palmeri S. Wats. 2. Unsaturated Esters and Free Fatty Acids, Sterols, and Triterpenols

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• 作者：Oliver D. Dailey ; Jr. ; Ray F. Severson ; and Richard F. Arrendale
• 刊名：Journal of Agricultural and Food Chemistry
• 出版年：1997
• 出版时间：October 1997
• 年：1997
• 卷：45
• 期：10
• 页码：3914 - 3920
• 全文大小：171K
• 年卷期：v.45,no.10(October 1997)
• ISSN：1520-5118

文摘

An earlier paper on the nonpolar lipids of Amaranthuspalmeri described the compositions of thesaturated fatty alcohol and wax ester components of the leaves andflowering parts. In this paper,the compositions of esters containing unsaturated acyl moieties(triglycerides, steryl esters, andterpenol esters), as determined by capillary gas chromatography/massspectroscopy (GC/MS) analysis,are presented. In addition, the free fatty acid, sterol, andtriterpenol components were characterized.The triglycerides constituted the major class of esters. Themajor hydroxylated constituents werepalmitic, linoleic, and oleic acids and the sterol chondrillasterol.The sterols campesterol,stigmasterol, ergost-7-en-3fchars/beta2.gif" BORDER=0 ALIGN="middle">-ol, chondrillast-7-enol, and24-ethylidenecholest-7-en-3fchars/beta2.gif" BORDER=0 ALIGN="middle">-ol and thetriterpenols fchars/beta2.gif" BORDER=0 ALIGN="middle">-and fchars/alpha.gif" BORDER=0>-amyrin, lupeol, cycloartenol, and24-methylenecycloartenol were present inlesser quantities.Keywords: Lipid; Amaranthus palmeri; fatty acid; sterol; triterpenol;column chromatography;thin-layer chromatography; capillary gas chromatography;GC/MS