Hostname: page-component-78c5997874-g7gxr Total loading time: 0 Render date: 2024-11-04T18:18:16.119Z Has data issue: false hasContentIssue false
  • English
  • Français

Relationship between fatty acid composition and triglyceride structure of bovine milk fat

Published online by Cambridge University Press:  01 June 2009

Peter W. Parodi
Peter W. Parodi
Affiliation:
Fats Research Laboratory, The Butter Marketing Board, Hamilton Central, Queensland 4007, Australia
Get access Rights & Permissions [Opens in a new window]

Summary

Fourteen samples of milk fat, representing a wide range of individual fatty acid contents, were subjected to stereospecific analysis to determine fatty acid contents at the sn-l-, sn-2- and sn-3-positions of the triglycerides. Highly significant linear relationships were found between the content of a fatty acid at the 3 positions and the content of the same acid in the intact triglycerides. As the content of an acid increased in the triglycerides there were increases in the content of that acid at the 3 positions. When the content of an acid changed in the triglycerides, the content at the 3 stereospecific positions did not change at the same rate. The positions with the highest slope values corresponded to the positions where the individual fatty acids were preferentially esterified.

Type
Original Articles
Information
Journal of Dairy Research , Volume 50 , Issue 4 , November 1983 , pp. 443 - 447
Copyright
Copyright © Proprietors of Journal of Dairy Research 1983

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

Association of Official Analytical Chemists. 1970 Official methods of analysis. 11th edn. Washington, D.C.: AOACGoogle Scholar
Brookbriioff, H. 1965 A stereospeoitic analysis of triglycerides. Journal of Lipid Research 6 10–15Google Scholar
Christie, W. W. & Moore, J. H. 1960 A semimicro method for the stereospecific analysis of triglycerides. Biochimica et Hiophysica Acta 176 445–452CrossRefGoogle Scholar
Fatemi, S. H. & Hammond, E. G. 1977 Glyceride structure variation in soybean varieties: I. Sterospecific analysis. Lipids 12 1032–1036CrossRefGoogle Scholar
Gross, M. J. & Kinsella, J. E. 1974 Properties of palmityl-CoA: L-α-Glycerolphosphate acyl transferase from bovine maininary microsomes. Lipids 9 905–912CrossRefGoogle ScholarPubMed
Jack, E. L., Freeman, C. P., Smith, L. M. & Mickle, J. B. 1963 Pancreatic lipase hydrolysis of cow milk fat. Journal of Dairy Science 46 284–290CrossRefGoogle Scholar
Jensen, R. G., Sampuona, J. & Pereira, R. L. 1964 Intermolecular specificity of pancreatic lipase and the structural analysis of milk triglycerides. Journal of Dairy Science 47 727–732CrossRefGoogle Scholar
Kinsella, J. E. 1976 Monoacyl-sn-glycerol-3-phosphate aeyltransferase specificity in bovine mammary microsomes. Lipids 11 680–684CrossRefGoogle ScholarPubMed
Kinsella, J. E. & Gross, M. 1973 Palmitic acid and initiation of mammary glyceride synthesis via phosphatidic acid. Biochimica et Biophysica Acta 316 109–113CrossRefGoogle ScholarPubMed
Kuksis, A., Marai, L. & Myher, J. J. 1973 Triglyceride structure of milk fats. Journal of the American Oil Chemists Society 50 193–201CrossRefGoogle ScholarPubMed
Marshall, M. O. & Knudsen, J. 1977 The specificity of l-acyl-sn-glycerol-3-phosphate aeyltransferase in microsomal fractions from lactating cow mammary gland towards short, medium and long chain acyl-CoA esters. Biochimica et Biophysica Acta 489 236–241CrossRefGoogle ScholarPubMed
Marshall, M. O. & Knudsen, J. 1979 Specificity of diacylglycerol aeyltransferase from bovine mammary gland, liver and adipose tissue towards acyl-CoA esters. European Journal of Biochemistry 94 93–98CrossRefGoogle ScholarPubMed
Moore, J. H. & Christie, W. W. 1979 Lipid metabolism in the mammary gland of ruminant animals. Progress in Lapid Research 17 347–395CrossRefGoogle ScholarPubMed
Morrison, I. M. & Hawke, J. C. 1977 Positional distribution of fatty acids in the triglycerides of bovine milk fat with elevated levels of linoleic acid. Lipids 12 1005–1011CrossRefGoogle Scholar
Parodi, P. W. 1979 Stereospecifie distribution of fatty acids in bovine milk fat triglycerides. Journal of Dairy Research 46 75–81CrossRefGoogle Scholar
Parodi, P. W. 1983 Positional distribution of fatty acids in triglycerides from prepartum mammary gland secretion and early postpartum milk. Journal of Dairy Science 66 912–919CrossRefGoogle Scholar
Pitas, R. E., Sampugna, J. & Jensen, R. G. 1967 Triglyceride structure of cows milk fat. 1. Preliminary observations on the fatty acid composition of positions 1, 2 and 3. Journal of Dairy Science 50 1332–1336CrossRefGoogle Scholar
Shehata, A. Y., De Man, J. M. & Alexander, J. C. 1970 A simple and rapid method for the preparation of methyl esters of fats in milligram amounts for gas chromatography. Canadian Institute of Food Technology Journal 3 85–89CrossRefGoogle Scholar
Taylor, M. W., & Hawke, J. C. 1975 Structural analysis of the triacylglycerols of bovine milk fats. New Zealand Journal of Dairy Science and Technology 10 49–57Google Scholar
Yurkowski, M. & Brockerhoff, H. 1966 Fatty acid distribution of triglycerides determined by deacylation with methyl magnesium bromide. Biochimica et Biophysica Acta 125 55–59CrossRefGoogle ScholarPubMed