期刊
NUTRIENTS
卷 6, 期 2, 页码 776-789出版社
MDPI
DOI: 10.3390/nu6020776
关键词
omega-3; phospholipids; glycolipids; DHA; long-chain PUFA; triacylglycerol; docosahexaenoic acid; fish oils; Camelina sativa; polar lipids
资金
- CSIRO Food Futures Flagship
- Nuseed Pty Ltd. Laverton, Australia
- Australian Grains Research and Development Corporation, Canberra, Australia
New and sustainable sources of long-chain (LC, >= C-20) omega-3 oils containing DHA (docosahexaenoic acid, 22:6 omega 3) are required to meet increasing demands. The lipid content of the oilseed of a novel transgenic, DHA-producing land plant, Camelina sativa, containing microalgal genes able to produce LC omega-3 oils, contained 36% lipid by weight with triacylglycerols (TAG) as the major lipid class in hexane extracts (96% of total lipid). Subsequent chloroform-methanol (CM) extraction recovered further lipid (similar to 50% polar lipid, comprising glycolipids and phospholipids) and residual TAG. The main phospholipid species were phosphatidyl choline and phosphatidyl ethanolamine. The % DHA was: 6.8% (of total fatty acids) in the TAG-rich hexane extract and 4.2% in the polar lipid-rich CM extract. The relative level of ALA (alpha-linolenic acid, 18:3 omega 3) in DHA-camelina seed was higher than the control. Major sterols in both DHA- and control camelina seeds were: sitosterol, campesterol, cholesterol, brassicasterol and isofucosterol. C-16-C-22 fatty alcohols, including iso-branched and odd-chain alcohols were present, including high levels of iso-17:0, 17:0 and 19:0. Other alcohols present were: 16:0, iso-18:0, 18:0 and 18:1 and the proportions varied between the hexane and CM extracts. These iso-branched odd-chain fatty alcohols, to our knowledge, have not been previously reported. These components may be derived from wax esters, or free fatty alcohols.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据