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Occurrence of γ-caseins in buffalo milk

Published online by Cambridge University Press:  01 June 2009

Patrick Trieu-Cuot
Affiliation:
Laboratoire de Biochimie et Technologie Laitières, Institut National de la Recherche Agronomique, CNRZ, 78350 Jouy-en-Josas, France
Francesco Addeo
Affiliation:
Istituto di Industrie Agrarie dell'Università di Napoli, 80055 Portici∣, Naples, Italy

Summary

Using polyacrylamide gel electrophoresis, 2-dimensional gel electrophoresis and electrofocusing, it has been shown that 4 basic fragments were produced by action of plasmin on buffalo β-casein. These fragments were present in whole buffalo casein prepared from bulk milk. Their mol. wts, 20000, 16000 and 11000 (2 components) were determined by SDS-gradient polyacrylamide gel electrophoresis. It is suggested that 3 of them are homologous to bovine γ1-, γ2- and γ3-caseins respectively, while the last one (mol. wt 16000), which has no counterpart in plasmin digest of bovine β-casein, could arise from a cleavage at bond 68–69.

Type
Original Articles
Copyright
Copyright © Proprietors of Journal of Dairy Research 1981

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References

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