Hostname: page-component-8448b6f56d-tj2md Total loading time: 0 Render date: 2024-04-19T07:56:18.645Z Has data issue: false hasContentIssue false
  • English
  • Français

510. Reactivation of milk phosphatase following heat treatment. I

Published online by Cambridge University Press:  01 June 2009

R. C. Wright  and
J. Tramer
R. C. Wright
Affiliation:
United Dairies Research Laboratories, London
J. Tramer
Affiliation:
United Dairies Research Laboratories, London
Get access Rights & Permissions [Opens in a new window]

Extract

1. Commercial samples of milk of Swiss origin, sterilized by rapid heating to high temperatures, developed a positive phosphatase reaction on storage.

2. The optimum temperatures of storage for the development of this positive phosphatase reaction was 30° C.

3. These commercial samples were sterile when received and remained sterile during storage.

4. The developed phosphatase is apparently identical with the normal alkaline phosphatase of raw milk as judged by (a) heat stability, (b) pH optimum and rate of hydrolysis at different pHs, (c) comparison of results by Kay-Graham and Aschaffenburg & Mullen tests.

Type
Original Articles
Information
Journal of Dairy Research , Volume 20 , Issue 2 , June 1953 , pp. 177 - 188
Copyright
Copyright © Proprietors of Journal of Dairy Research 1953

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

(1) Food and Drugs, England. Milk (Special Designation) (Pasteurized and Sterilized Milk) Regulations, 1949, no. 1589.Google Scholar
(2)Tramer, J. & Wight, J. (1950). J. Dairy Res. 17, 194.CrossRefGoogle Scholar
(3)King, E. J. & Delory, G. E. (1940). Enzymologia, 8, 278.Google Scholar
(4)Stoltz, E. I. & Hankinson, D. J. (1950). Amer. Milk Rev. 12, 60.Google Scholar
(5)Tramer, J. (1952). J. Dairy Res. 19, 275.Google Scholar
(6)Fischer, O. (1943). Milchw. Forsch. 21, 285.Google Scholar
(7)Schwimmer, S. (1944). J. biol. Chem. 154, 487.CrossRefGoogle Scholar
(8)Paschke, B. (1952). Milchwissenschaft, 7, 3.Google Scholar