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Fractional melting of hydrogenated milk fat

Published online by Cambridge University Press:  01 June 2009

William Banks ,
John L. Clapperton  and
Anne K. Girdler
William Banks
Affiliation:
Hannah Research Institute, Ayr KA6 5HL, UK
John L. Clapperton
Affiliation:
Hannah Research Institute, Ayr KA6 5HL, UK
Anne K. Girdler
Affiliation:
Hannah Research Institute, Ayr KA6 5HL, UK
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Summary

Hydrogenated milk fats have been subjected to a process of fractional melting. In five of the six samples, the procedure yielded two fractions, defined as oil/upper solid and lower solid fractions, whilst in the remaining sample, three fractions (oil, upper solid and lower solid) were obtained. The oil and oil/upper solid fractions were rich in short-chain fatty acids (FA) (4:0 and 6:0), whereas the lower solid fractions contained large amounts of long-chain FA (16:0 and 18:0). Triglyceride distributions reflected these differences in FA composition, the oil and oil/upper solid fractions being dominated by triglycerides with carbon numbers (CN) 36–38; the dominant CN for the lower solid fraction was 48–54. Melting spectra, obtained using differential scanning calorimetry, showed that the ability of the fractionation procedure to separate on the basis of melting properties ranged from excellent to relatively poor, depending on the type of milk fat.

Type
Original Articles
Information
Journal of Dairy Research , Volume 56 , Issue 2 , May 1989 , pp. 265 - 273
Copyright
Copyright © Proprietors of Journal of Dairy Research 1989

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References

REFERENCES

Banks, W., Clapperton, J. L. & Girdler, A. K. 1985 On the fractional melting of milk fat and the properties of the fractions. Journal of the Science of Food and Agriculture 36 421–431CrossRefGoogle Scholar
Banks, W., Clapperton, J. L., Kelly, M. E., Wilson, A. G. & Crawford, R. J. M. 1980 The yield, fatty acid composition and physical properties of milk fat obtained by feeding soya oil to dairy cows. Journal of the Science of Food and Agriculture 31 368–374CrossRefGoogle ScholarPubMed
Banks, W., Clapperton, J. L., Muir, D. D. & Girdler, A. K. 1989 Whipping properties of cream in relation to milk composition. Journal of Dairy Research 56 97–105CrossRefGoogle Scholar
Christie, W. W. 1982 Lipid Analysis 2nd edn, p. 61. Oxford: Pergamon PressGoogle Scholar
Poot, C., Dijkshoorn, W., Haighton, A. J. & Verburg, C. C. 1975 Laboratory separation of crystals from plastic fats using detergent solution. Journal of the American Oil Chemists' Society 52 69–72CrossRefGoogle Scholar
Timms, R. E. 1980 The phase behaviour and polymorphism of milk fat, milk fat fractions and fully hardened milk fat. Australian Journal of Dairy Technology 35 47–53Google Scholar