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Milk fat globule membrane material in skim-milk

Published online by Cambridge University Press:  01 June 2009

F. B. P. Wooding
F. B. P. Wooding
Affiliation:
Agricultural Research Council, Institute of Animal Physiology, Babraham, Cambridge, CB2 4AT
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Summary

It has been claimed by Stewart, Puppione & Patton (1972) that milk is a valuable source of cell membrane in a ‘relatively pure’ state originating from shed mammary secretory cell microvilli and golgi vesicles. The morphological basis for this has been re-examined in this paper. It is shown that the vesicular and elongated membranous structures found in skim-milk are identical to structures present as part of the initial milk fat globule membrane (MFGM) of alveolar and expressed milk, and that both structures survive extraction with chloroform–methanol. It is therefore suggested that a major part of the skim-milk membrane is material shed from the freshly secreted milk fat globule and consists of a specialised derivative of the secretory cell plasmalemma, the initial MFGM.

Type
Research Article
Information
Journal of Dairy Research , Volume 41 , Issue 3 , October 1974 , pp. 331 - 337
Copyright
Copyright © Proprietors of Journal of Dairy Research 1974

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References

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