Hostname: page-component-586b7cd67f-t7czq Total loading time: 0 Render date: 2024-11-26T20:17:16.430Z Has data issue: false hasContentIssue false
  • English
  • Français

420. The colloidal phosphate of milk: I. Composition and titrimetric estimation

Published online by Cambridge University Press:  01 June 2009

G. T. Pyne  and
J. J. Ryan
G. T. Pyne
Affiliation:
Dairy Chemistry Department, University College, Cork
J. J. Ryan
Affiliation:
Dairy Chemistry Department, University College, Cork
Get access Rights & Permissions [Opens in a new window]

Extract

1. A new type of oxalate titration permitting determination of the nature of the colloidal phosphate of milk has been developed.

2. About 88% of the colloidal phosphate appears to be tricalcic, the remainder is thought to be dicalcic.

3. Estimates of tricalcium phosphate by the Ling titration are distinctly higher than the foregoing. This would seem to be due mainly to the divergent pH values to which milk and whey are titrated in this method. There is no evidence of any conversion of colloidal dicalcium to tricalcium phosphate during the Ling titration, as had been suggested.

Type
Original Articles
Information
Journal of Dairy Research , Volume 17 , Issue 2 , June 1950 , pp. 200 - 205
Copyright
Copyright © Proprietors of Journal of Dairy Research 1950

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)Van, Slyke & Bosworth, (1914). J. biol. Chem. 17, 73.Google Scholar
(2)Porcher, (1930). Lait, 3, 188.CrossRefGoogle Scholar
(3)Pyke, & Ryan, (1932). Sci. Proc. R. Dublin Soc. 20, 471.Google Scholar
(4)Pyne, (1934). Biochem. J. 28, 940.CrossRefGoogle Scholar
(5)Ling, (1936). J. Dairy Res. 7, 145.CrossRefGoogle Scholar
(6)De, Kadt & van Minnen, (1943). Rec. Trav. chim. Pays·Bas, 62, 257.Google Scholar
(7)Ramsdell, & Whittier, (1944). J. biol. Chem. 154, 413.CrossRefGoogle Scholar
(8)Eilers, (1945). Versl. landb. Onderzoek, Minist. Landb., 's Grav., 50 (15) G, 1009.Google Scholar
(9)Ter, Horst (1947). Neth. Milk & Dairy J. 1, 137.Google Scholar
(10)Britton, (1942). Hydrogen Ions. London: Chapman and Hall.Google Scholar
(11)Sandelin, (1943). Meijeriet. Aikakaust. 5, 1.Google Scholar
(12)Pyne, (1940). J. Dairy Res. 11, 292.CrossRefGoogle Scholar
(13)Pyne, (1935). Set. Proc. R. Dublin Soc. 21, 223.Google Scholar
(14)Sommer, & Menos, (1931). J. Dairy Sci. 14, 136.CrossRefGoogle Scholar
(15)Thomé, (1942). Medd. Statens Mejeriförsök, no. 9.Google Scholar
(16)Van Dee, Burg (1947). Neth. Milk & Dairy J. 1, 69.Google Scholar
(17)Grimmer, & Schwarz, (1925). Milchw. Forsch. 2, 163.Google Scholar