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The effect of antioxidants on the keeping quality of whole milk powder: I. Flavones, gallates, butylhydroxyanisole and nordihydroguaiaretic acid

Published online by Cambridge University Press:  01 June 2009

J. Abbot  and
R. Waite
J. Abbot
Affiliation:
The Hannah Dairy Research Institute, Ayr
R. Waite
Affiliation:
The Hannah Dairy Research Institute, Ayr
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Summary

Spray-dried whole milk powders have been prepared containing 0·01% of four flavones, propyl and dodecyl gallates, butylhydroxyanisole (BHA) and nordihydroguaiaretic acid (NDGA). The powders were stored at 20 and 37°C and examined at intervals of 25 days for taste of the reconstituted milk, peroxide value of the fat and oxygen absorption of the powder. Three of the four flavones, 7,8-dimethoxy-3,2',5'-trihydroxyflavone, 6-ethyl-3,7,2',5'-tetrahydroxyflavone and 6-dodecyl-3,7,2',5'-tetrahydroxyflavone improved the keeping quality of the powder, the last-named compound being the most effective, but 3,7,8,2'5'-pentahydroxyflavone was without antioxidative properties in this system. These results are briefly discussed with respect to substitution within the flavone molecule.

Dodecyl gallate was a very effective antioxidant for spray-dried whole milk powder and propyl gallate and NDGA, whilst affording good protection, were less so; BHA did little to improve keeping quality.

The best antioxidant of the flavones investigated, 6-dodecyl-3,7,2',5'-tetrahydroxyflavone, appeared to be almost as effective as propyl gallate and NDGA in these milk powders.

Type
Original Articles
Information
Journal of Dairy Research , Volume 29 , Issue 1 , February 1962 , pp. 55 - 61
Copyright
Copyright © Proprietors of Journal of Dairy Research 1962

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