trans Fatty acids in milk produced by women in the United States

Erin E. Mosley, Anne L Wright, Michelle K. McGuire, Mark A. McGuire

Research output: Contribution to journalArticle

45 Citations (Scopus)

Abstract

Background: trans Fatty acids (FAs) have been identified as negatively affecting human health. The trans FA composition of human milk fat must be examined to establish its influence on the nutritional quality of milk consumed by infants. Objective: We sought to ascertain the individual and total trans FA isomers (sum of FAs containing at least one trans double bond) in human milk and to identify relations between individual FAs and milk fat concentration (% by wt). Design: The FA composition of milk samples (n = 81) from women living in the southwestern United States was ascertained. The individual 18:1t isomers were separated. Correlations between each FA, total trans FAs, groups of similar FAs, and milk fat concentrations were examined. Results: The mean total trans FA concentration was 7.0 ± 2.3% (range: 2.5-13.8%). The concentration of total 18:1t was 5.1 ± 2.0% (range: 1.5-11.6%), and Δ10t (range: Δ9-12t) was the most abundant isomer. Conclusions: Milk fat from women living in the United States contains concentrations of trans FAs similar to those in milk from Canadian women but greater than those reported in milk from women in other countries. In decreasing order of concentration, the Δ10t, Δ11t, Δ9t, and Δ12t isomers represented 78.9% of the total 18:1t. These FAs generally originate from partially hydrogenated vegetable oils and ruminant fat in the diet. No relation was found between the concentration of total trans FAs and milk fat concentration.

Original languageEnglish (US)
Pages (from-to)1292-1297
Number of pages6
JournalAmerican Journal of Clinical Nutrition
Volume82
Issue number6
StatePublished - 2005

Fingerprint

Trans Fatty Acids
trans fatty acids
Milk
milk
Fatty Acids
Fats
milk fat
isomers
fatty acids
Human Milk
human milk fat
fatty acid composition
Southwestern United States
hydrogenated oils
breast milk
Plant Oils
vegetable oil
Nutritive Value
Ruminants
human health

Keywords

  • Human milk
  • Lactation
  • Lipids
  • Milk fat
  • trans fatty acids
  • US women

ASJC Scopus subject areas

  • Medicine (miscellaneous)
  • Food Science

Cite this

Mosley, E. E., Wright, A. L., McGuire, M. K., & McGuire, M. A. (2005). trans Fatty acids in milk produced by women in the United States. American Journal of Clinical Nutrition, 82(6), 1292-1297.

trans Fatty acids in milk produced by women in the United States. / Mosley, Erin E.; Wright, Anne L; McGuire, Michelle K.; McGuire, Mark A.

In: American Journal of Clinical Nutrition, Vol. 82, No. 6, 2005, p. 1292-1297.

Research output: Contribution to journalArticle

Mosley, EE, Wright, AL, McGuire, MK & McGuire, MA 2005, 'trans Fatty acids in milk produced by women in the United States', American Journal of Clinical Nutrition, vol. 82, no. 6, pp. 1292-1297.
Mosley, Erin E. ; Wright, Anne L ; McGuire, Michelle K. ; McGuire, Mark A. / trans Fatty acids in milk produced by women in the United States. In: American Journal of Clinical Nutrition. 2005 ; Vol. 82, No. 6. pp. 1292-1297.
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abstract = "Background: trans Fatty acids (FAs) have been identified as negatively affecting human health. The trans FA composition of human milk fat must be examined to establish its influence on the nutritional quality of milk consumed by infants. Objective: We sought to ascertain the individual and total trans FA isomers (sum of FAs containing at least one trans double bond) in human milk and to identify relations between individual FAs and milk fat concentration ({\%} by wt). Design: The FA composition of milk samples (n = 81) from women living in the southwestern United States was ascertained. The individual 18:1t isomers were separated. Correlations between each FA, total trans FAs, groups of similar FAs, and milk fat concentrations were examined. Results: The mean total trans FA concentration was 7.0 ± 2.3{\%} (range: 2.5-13.8{\%}). The concentration of total 18:1t was 5.1 ± 2.0{\%} (range: 1.5-11.6{\%}), and Δ10t (range: Δ9-12t) was the most abundant isomer. Conclusions: Milk fat from women living in the United States contains concentrations of trans FAs similar to those in milk from Canadian women but greater than those reported in milk from women in other countries. In decreasing order of concentration, the Δ10t, Δ11t, Δ9t, and Δ12t isomers represented 78.9{\%} of the total 18:1t. These FAs generally originate from partially hydrogenated vegetable oils and ruminant fat in the diet. No relation was found between the concentration of total trans FAs and milk fat concentration.",
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N2 - Background: trans Fatty acids (FAs) have been identified as negatively affecting human health. The trans FA composition of human milk fat must be examined to establish its influence on the nutritional quality of milk consumed by infants. Objective: We sought to ascertain the individual and total trans FA isomers (sum of FAs containing at least one trans double bond) in human milk and to identify relations between individual FAs and milk fat concentration (% by wt). Design: The FA composition of milk samples (n = 81) from women living in the southwestern United States was ascertained. The individual 18:1t isomers were separated. Correlations between each FA, total trans FAs, groups of similar FAs, and milk fat concentrations were examined. Results: The mean total trans FA concentration was 7.0 ± 2.3% (range: 2.5-13.8%). The concentration of total 18:1t was 5.1 ± 2.0% (range: 1.5-11.6%), and Δ10t (range: Δ9-12t) was the most abundant isomer. Conclusions: Milk fat from women living in the United States contains concentrations of trans FAs similar to those in milk from Canadian women but greater than those reported in milk from women in other countries. In decreasing order of concentration, the Δ10t, Δ11t, Δ9t, and Δ12t isomers represented 78.9% of the total 18:1t. These FAs generally originate from partially hydrogenated vegetable oils and ruminant fat in the diet. No relation was found between the concentration of total trans FAs and milk fat concentration.

AB - Background: trans Fatty acids (FAs) have been identified as negatively affecting human health. The trans FA composition of human milk fat must be examined to establish its influence on the nutritional quality of milk consumed by infants. Objective: We sought to ascertain the individual and total trans FA isomers (sum of FAs containing at least one trans double bond) in human milk and to identify relations between individual FAs and milk fat concentration (% by wt). Design: The FA composition of milk samples (n = 81) from women living in the southwestern United States was ascertained. The individual 18:1t isomers were separated. Correlations between each FA, total trans FAs, groups of similar FAs, and milk fat concentrations were examined. Results: The mean total trans FA concentration was 7.0 ± 2.3% (range: 2.5-13.8%). The concentration of total 18:1t was 5.1 ± 2.0% (range: 1.5-11.6%), and Δ10t (range: Δ9-12t) was the most abundant isomer. Conclusions: Milk fat from women living in the United States contains concentrations of trans FAs similar to those in milk from Canadian women but greater than those reported in milk from women in other countries. In decreasing order of concentration, the Δ10t, Δ11t, Δ9t, and Δ12t isomers represented 78.9% of the total 18:1t. These FAs generally originate from partially hydrogenated vegetable oils and ruminant fat in the diet. No relation was found between the concentration of total trans FAs and milk fat concentration.

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