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Nutrient content of liquid milk

II. Content of vitamin C, riboflavin, folic acid, thiamin, vitamins B12 and B6 in pasteurized milk as delivered to the home and after storage in the domestic refrigerator

Published online by Cambridge University Press:  01 June 2009

K. John Scott ,
Dinah R. Bishop ,
Alicja Zechalko  and
John D. Edwards-Webb
K. John Scott
Affiliation:
†National Institute for Research in Dairying (University of Reading), Shinfield, Reading RG2 9 AT, UK
Dinah R. Bishop
Affiliation:
†National Institute for Research in Dairying (University of Reading), Shinfield, Reading RG2 9 AT, UK
Alicja Zechalko
Affiliation:
†National Institute for Research in Dairying (University of Reading), Shinfield, Reading RG2 9 AT, UK
John D. Edwards-Webb
Affiliation:
†National Institute for Research in Dairying (University of Reading), Shinfield, Reading RG2 9 AT, UK
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Summary

Concentrations were measured of different vitamins in milk as delivered to the home and after storage in the domestic refrigerator, during summer and winter periods. Vitamin C concentrations varied greatly, ranging from 0·1 to 18·4 εg/ml. Most of the lower vitamin C values were associated with known exposure of the milk to daylight and there was a clear tendency for the concentrations to fall with increased time of refrigerated storage especially when associated with prior exposure of the milk to daylight. Riboflavin values were mostly in the range 1·35–1·92εg/ml, but occasional lower values were associated with low content of vitamin C and in some instances with prolonged exposure to daylight on the doorstep. Concentrations of the other vitamins (εg/m1) were: folic acid 0·041–0·074, thiamin 0·38–0·48, vitamin B12 0·0032–0·0044 and vitamin B6 0·56–0·71. All fell within the normal ranges and were not significantly influenced by exposure of the milk to daylight or subsequent storage in the refrigerator.

Type
Original Articles
Information
Journal of Dairy Research , Volume 51 , Issue 1 , February 1984 , pp. 51 - 57
Copyright
Copyright © Proprietors of Journal of Dairy Research 1984

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References

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