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- Title
The Content and Composition of Total, Free, and Esterified Sterols of Lotus Plumule Oil by GC-MS/FID.
- Authors
Chen, Shuai; Bi, Yanlan; Sun, Shangde; Chen, Jingnan
- Abstract
This study investigated the content and composition of total, free, and esterified sterols of three varieties of lotus plumule oil (Hunan lotus, Jiangxi lotus, and Fujian lotus) using GC-MS/FID. The fatty acid composition of sterol fatty acid esters (SFAE) was also analyzed and compared with that of triglycerides. Results showed that total sterol of lotus plumule oil (12.10-14.21 g/100 g) was higher than that of other plant oils (corn germ oil, 1.11 g/100 g; rapeseed oil, 0.78 g/100 g). No significant difference was found among the total sterol contents of the three types of lotus plumule oils ( p > 0.05). Most sterol existed in ester forms (81.8-89.1%) rather than in free forms (8.4-10.1%). β-Sitosterol (71.4-73.4%), and campesterol (6.2-7.5%) were the predominant fractions of free sterols. β-Sitosterol (41.3-53.7%) and ∆5-avenasterol (27.1-31.1%) were the predominant fractions of esterified sterols, followed by campesterol (12.1-13.0%) and ∆7-avenasterol (3.4-3.7%). Linoleic acid (63.6-65.8%), oleic acid (8.3-10.4%), and behenic acid (9.0-9.9%) were the main fatty acids of SFAE, which were different from those of triglycerides. The results from this study suggest that lotus plumule oil may be a good resource of SFAE and can be used as a supplemental ingredient in functional foods.
- Subjects
STEROLS; FATTY alcohols; FATTY acids; FUNCTIONAL foods; TRIGLYCERIDES; LINOLEIC acid
- Publication
Journal of the American Oil Chemists' Society (JAOCS), 2017, Vol 94, Issue 3, p363
- ISSN
0003-021X
- Publication type
Article
- DOI
10.1007/s11746-017-2952-8