PMID: 6538098Feb 14, 1984Paper

Effect of particle size and lipid composition of bovine blood high density lipoprotein on its function as a carrier of beta-carotene

Biochimica Et Biophysica Acta
J R AshesR W Sleigh

Abstract

As part of a study on the influence of dietary lipids on vitamin transport and metabolism in lactating cows, we have examined the beta-carotene content and other properties of fractions of the high-density lipoprotein (HDL, density 1.05-1.16 g/ml) of bovine blood. Our purpose was primarily to explain previous results indicating that feeding cows polyunsaturated lipids alters the properties of the HDL and increases the concentration of beta-carotene in the blood but not in the milk. Fractions of HDL of different particle size were prepared by gel-filtration chromatography and the particle diameters measured by electron microscopy. We found that large HDL particles contain more beta-carotene per unit weight than small particles. Furthermore the HDL from cows fed lipid-rich diets with a high proportion of linoleic-acid residues, which had been protected against microbial degradation in the rumen, had a high percentage of HDL particles with large diameters. The blood from these cows had a higher concentration of beta-carotene than before feeding polyunsaturated lipids, but their milk had a lower concentration. We suggest that HDL is the main store of beta-carotene in bovine blood. Moreover the concentration of beta-carotene in bloo...Continue Reading

References

May 29, 2010·Chemistry : a European Journal·Ali Reza MohebbiRainer Herges

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Citations

Nov 30, 2013·Nutrients·Varsha Shete, Loredana Quadro
Dec 17, 2009·Reproduction in Domestic Animals = Zuchthygiene·C KawashimaK Kida
Mar 24, 2004·The British Journal of Nutrition·Valérie ScislowskiDominique Bauchart
Aug 1, 1995·Arteriosclerosis, Thrombosis, and Vascular Biology·L S ElinderG Walldius
Feb 1, 1987·Journal of Dairy Science·Y FolmanH Barash
Mar 1, 1989·Journal of Dairy Science·W L Hurley, R M Doane
Dec 1, 1993·Journal of Dairy Science·D Bauchart

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