ISSN:
1745-4522
Source:
Blackwell Publishing Journal Backfiles 1879-2005
Topics:
Process Engineering, Biotechnology, Nutrition Technology
Notes:
The content ofTrans C18:1,Trans C18:2 and cis9trans11 C18:2 (CLA) in the marketed fat blends was evaluated by capillary gas chromatography and silver thin-layer chromatography. For comparison, the level of these acids was also determined in commercial butter, purchased at the same time. The content ofTrans C18:1 in fat blends showed that half of the examined products containedTrans C18:1 at 1.9–4.4%, while the other half contained 8.2–24.2%Trans fatty acids. The fat blends with a high total content ofTrans C18:1 were characterized by a high proportion ofTrans 6–8 andTrans 9 isomers. TheTrans 9 C18:1 in these products constituted 15.0–22.5% of the totalTrans C18:1. The level ofTrans C18:2 in fat blends examined ranged from 0.3 to 1.1%. Seven of the 18 tested fat blends contained, apart from cis-trans andTrans-cis C18:2, alsoTrans-trans C18:2 in the 0.03–0.4% range. In all fat blends examined, CLA was present. The products with a low level ofTrans C18:1 contained CLA at 0.3–1.0%. The content of CLA in the fat blends with high level ofTrans C18:1 did not exceed 0.3%.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1111/j.1745-4522.2005.00022.x
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