Phospholipids flaxseed

Wanasundara et al. (1999) reported that neutral lipids (acylglycerols and fatty acids) constitute 96% of the total lipid in flaxseed, whereas polar lipids (glycolipids and phospholipids) account for 1.4%. Stenberg et al. (2005) observed similar findings except that less phospholipid was detected. Froment et al. (1999) discussed the effects of cultivar, location, and late harvest on phospholipid content. Neutral lipid fraction of flaxseed meal was 95-98% triacylglycerols (TAG) and thus accounts for the predominant lipid in flaxseed (Oomah et al., 1996). 

Ferrier, L., Caston, L., Leeson, S., Squires, J., Weaver, B., and Holub, B. 1995. a-Linolenic acid- and docosahexaenoic acid-enriched eggs from hens fed flaxseed Influence on blood lipids and platelet phospholipid fatty acids in humans. Am J. Clin Nutr. 62, 81-86. 

Solin Oil occurs as a light yellow oil. It is obtained from the seed of certain varieties of the flaxseed plant Linum usitatissi-mum L. (Fam. Linaceae) by mechanical expression and/or solvent extraction, differing from linseed oil in having a linolenic acid (C18 3) content of less than 5%. The oil is refined, bleached, and deodorized to remove free fatty acids, phospholipids, color, odor and flavor components, and miscellaneous non-oil materials. It is liquid and free from visible foreign material at 21° to 21°, but traces of wax may cause the oil to cloud at refrigeration temperatures (2° to 5°) unless removed by winterization. 

Fig.1. The proportion of radioactivity in fatty acids from liver and brain phospholipids after an oral dose of 1- X-linoleic acid in weanling rats. The pups were from diet groups whose mothers had been raised on diets containing either safflower oil or flaxseed oil as the sole dietary lipid. The dams had consumed the diet from 1 wk before mating until weaning of the pups. Pups were killed (16 d old) 24 h after oral dosing and tissues were isolated. Results are means, n = 2 rats/diet group. Further details of the methods are found in Reference 12. Abbreviations ALA, a-linolenic acid EPA, eicosapentaenoic acid DPA, docosapentaenoic acid DHA, docosa-hexaenoic acid SM, saturated plus monounsaturated fatty acids.

Table 5. Changes in the composition of neutral and phospholipids of flaxseed during germination ...

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