Fatty acid composition of French infant formulas with emphasis on the content and detailed profile oftrans fatty acids View Full Text


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Article Info

DATE

1996-11

AUTHORS

Jean-Michel Chardigny, Robert L. Wolff, Estelle Mager, Corine C. Bayard, Jean-Louis Sébédio, Lucy Martine, W. M. N. Ratnayake

ABSTRACT

The aim of the present study was to identify and quantitatetrans isomers of C18 fatty acids in some French infant formulas. Twenty powdered infant formulas were purchased in pharmacies and supermarkets in order to assess theirtrans mono- and poly-unsaturated fatty acids content. The fatty acid profiles were examined using methyl and isopropyl ester derivatives. The combination of gas-liquid chromatography, high-performance liquid chromatography, and silver nitrate thin-layer chromatography was needed to describe the detailed fatty acid compositions of the samples, includingtrans isomers of unsaturated C18 fatty acids. All the samples containedtrans isomers of C18∶1 acid (mean level 1.97±0.28% of total fatty acids), with vaccenic acid being generally the major isomer (15 out of 20 samples), thus indicating the origin from bovine milk. All the formulas also contained various isomers of linoleic and α-linolenic acids, but at lower levels.Trans PUFA isomers are the same as those present in deodorized oils. In conclusion, all the infant formulas analyzed in this study contained sometrans fatty acids, including isomers of essential fatty acids. This should be taken into account in the dietary intake of the newborn. More... »

PAGES

1595-1601

References to SciGraph publications

  • 1994-10. Occurrence of 5c,8c,11c,15t-eicosatetraenoic acid and other unusual polyunsaturated fatty acids in rats fed partially hydrogenated calola oil in LIPIDS
  • 1974-03. Linolenic acid artifacts from the deodorization of oils in JOURNAL OF THE AMERICAN OIL CHEMISTS' SOCIETY
  • 1995-12. Evaluation of sequential methods for the determination of butterfat fatty acid composition with emphasis ontrans-18:1 acids. Application to the study of seasonal variations in french butters in JOURNAL OF THE AMERICAN OIL CHEMISTS' SOCIETY
  • 1994-03. Contribution oftrans-18∶1 acids from dairy fat to european diets in JOURNAL OF THE AMERICAN OIL CHEMISTS' SOCIETY
  • 1996-02. Identification of noveltrans isomers of 20∶5n−3 in liver lipids of rats fed a heated oil in LIPIDS
  • 1989-09. Occurrence of geometrical isomers of eicosapentaenoic and docosahexaenoic acids in liver lipids of rats fed heated linseed oil in LIPIDS
  • 1994-08. Analysis of alpha-linolenic acid geometrical isomers in deodorized oils by capillary gas-liquid chromatography on cyanoalkyl polysiloxane stationary phases: A note of caution in JOURNAL OF THE AMERICAN OIL CHEMISTS' SOCIETY
  • 1995-01. Trans fatty acid isomers in Canadian human milk in LIPIDS
  • 1984-10. Geometrical isomerization of linolenic acid during heat treatment of vegetable oils in JOURNAL OF THE AMERICAN OIL CHEMISTS' SOCIETY
  • 1992-02. Positional and geometrical isomers of linoleic acid in partially hydrogenated oils in JOURNAL OF THE AMERICAN OIL CHEMISTS' SOCIETY
  • 1988-03. Linoleic acid isomers in heat treated sunflower oils in JOURNAL OF THE AMERICAN OIL CHEMISTS' SOCIETY
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    http://scigraph.springernature.com/pub.10.1007/bf02523531

    DOI

    http://dx.doi.org/10.1007/bf02523531

    DIMENSIONS

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