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KMID : 1134820110400091256
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Journal of the Korean Society of Food Science and Nutrition
2011 Volume.40 No. 9 p.1256 ~ p.1264
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Determination of Positional Fatty Acid and Triacylglycerol Compositions of Selected Infant Formulas
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Son Jeoung-Mae
Lee Jeung-Hee
Hong Soon-Tack
Lee Kyung-Su
Park Hye-Kyung
Kwon Kwang-Il
Lee Ki-Teak
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Abstract
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Infant formula is one of the main nutritional sources for infants. In this study, the fatty acid compositions of Korean (domestic, n=8) and foreign infant formulas (n=3) were analyzed. Crude fats were extracted using the Folch method, and fatty acid compositions (total and positional) were analyzed by gas chromatography. In the fatty acid compositions of infant formulas, oleic (19.88～44.64%), palmitic (7.59～21.65%) and linoleic acids (16.72～25.87%) were the major fatty acids. Domestic infant formula products contained 35.94～56.55% total saturated fatty acid content, whereas that of foreign infant formula ranged from 34.40～42.88%. The content of monounsaturated fatty acids ranged from 20.23～44.99% in domestic products and 34.11～45.07% in foreign products. In addition, 0.17～2.57% arachidonic acid/docosahexaenoic acid and 10～13% linoleic acid/linolenic acid were detected in the analyzed products (domestic and foreign products). A small amount of trans fatty acids (0.25～1.69%) were found. In sn-2 position analysis, palmitic acids (1.84～38.74%) were detected in the analyzed formulas. Further, typical triacylglycerols in human milk, including 1,3-di-monounsaturated-2-satu-rated triacylglycerol, were not detected in the analyzed formulas.
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KEYWORD
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infant formula, fatty acid composition, sn-2 position, palmitic acid, 1, 3-di-monounsaturated-2-saturated triacylglycerol
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