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Formation of galactose during heat treatment of milk and model systems

Published online by Cambridge University Press:  01 June 2009

Marta M. Calvo  and
Agustin Olano
Marta M. Calvo
Affiliation:
Instituto de Fermentaciones Industriales, Juan de la Cierva 3, 28006 Madrid, Spain
Agustin Olano
Affiliation:
Instituto de Fermentaciones Industriales, Juan de la Cierva 3, 28006 Madrid, Spain
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Summary

The formation of galactose, lactulose and epilactose during heating of milk was studied. The concentration of these carbohydrates increased with pH and the severity of heat treatment. The presence of proteins reduced the amount of lactulose formed whereas it increased that of epilactose and galactose. The galactose in heated milks was derived from lactose degradation. Under the conditions studied, degradation of the Amadori rearrangement product did not result in the formation of galactose. The interaction between proteins and galactose increased the thermal stability of the monosaccharide.

Type
Original articles
Information
Journal of Dairy Research , Volume 56 , Issue 5 , November 1989 , pp. 737 - 740
Copyright
Copyright © Proprietors of Journal of Dairy Research 1989

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References

REFERENCES

Andrews, G. R. 1984 Distinguishing pasteurized, UHT and sterilized milks by their lactulose content. Journal of the Society of Dairy Technology 37 92–95CrossRefGoogle Scholar
Corzo, N., Olano, A. & Martinez-Castro, I. 1986 [Differentiation of milks given various heat treatments by gas liquid Chromatographic analysis of free disaccharides.] Revista Agroquímica y Tecnología de los Alimentos 26 565–570Google Scholar
Fink, R. & Kessler, H. G. 1988 Comparison of methods for distinguishing UHT treatment and sterilization of milk. Milchwissenchaft 43 275–280Google Scholar
Geier, H. & Klostermeyer, H. 1983 Formation of lactulose during heat treatment of milk. Milchwissenchaft 38 475–477Google Scholar
Greig, B. D. & Payne, G. A. 1985 Epimerization of lactose to free lactulose in heated model milk solutions. Journal of Dairy Research 52 409–417CrossRefGoogle Scholar
Jenness, R. & Koops, J. 1962 Preparation and properties of a salt solution which simulates milk ultrafiltrate. Netherlands Milk and Dairy Journal 16 153–164Google Scholar
Martinez-Castro, I. & Olano, A. 1978 [Determination of lactulose in commercial milks] Revista Española de Lechería No. 110 213–217Google Scholar
Martinez-Castro, I. & Olano, A. 1980 Influence of thermal processing on carbohydrate composition of milk. Formation of epilactose. Milchwissenchaft 35 5–8Google Scholar
Olano, A., Calvo, M. M. & Corzo, N. 1989 Changes in the carbohydrate fraction of milk during heating processes. Food Chemistry 31 259–265CrossRefGoogle Scholar
Walstra, P. & Jenness, R. 1984 Dairy Chemistry and Physics, p. 40. New York: John Wiley and Sons.Google Scholar