Simultaneous Analysis of Free Phytosterols/Phytostanols and...

来自 : test.ixueshu.com/h5/document/b 发布时间：2021-03-24

摘要：An approach based on solid-phase extraction for the effective separation of free phytosterols/phytostanols and phytosteryl/phytostanyl fatty acid and phenolic acid esters from cereal lipids was developed. The ester conjugates were analyzed in their intact form by means of capillary gas chromatography. Besides free sterols and stanols, up to 33 different fatty acid and phenolic acid esters were identified in four different cereal grains via gas chromatography-mass spectrometry. The majority (52-57%) of the sterols and stanols were present as fatty acid esters. The highest levels of all three sterol and stanol classes based on dry matter of ground kernels were determined in corn, whereas the oil extract of rye was 1.7 and 1.6 times richer in fatty acid esters and free sterols/stanols than the corn oil. The results showed that there are considerable differences in the sterols/stanols and their ester profiles and contents obtained from corn compared to rye, wheat, and spelt. The proposed method is useful for the quantification of a wide range of free phytosterols/phytostanols and intact phytosteryl/phytostanyl esters to characterize different types of grain.
simultaneous analysis of free phytosterols/phytostanols and intact phytosteryl/phytostanyl fatty acid and phenolic acid esters in cereals 作者: esche rebecca...爱学术,谷歌学术,百度学术,知网,万方,免费期刊论文下载,毕业论文文献下载,免费论文网,期刊下载,学术期刊,核心期刊论文库,国内免费期刊,论文范文查找,国内外文献,国外免费图书,PPT模板免费下载,pdf转word爱学术是一家专业的学术文献分享平台，覆盖各个行业期刊论文，学位论文，会议论文，标准，专利等各类学术资源，是国内最大的学术文献交流中心和论文资源免费下载网站。Simultaneous Analysis of Free Phytosterols/Phytostanols and Intact Phytosteryl/Phytostanyl Fatty Acid and Phenolic Acid Esters in Cereals