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Journal of Dairy Science Vol. 40 No. 5 571-578
© 1957 by American Dairy Science Association ®
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Volatile Carbonyl Compounds Produced in Skimmilk by High-Heat Treatment

M. E. Morgan

Department of Animal Industries, Storrs Agricultural Experiment Station, Storrs, Connecticut

D. A. Forss and S. Patton

Department of Dairy Science, The Pennsylvania Agricultural Experiment Station, University Park

ABSTRACT

Furfural and acetaldehyde are the principal volatile carbonyl compounds generated in skimmilk by high-heat treatment. None of the aldehydes which could result from a heat-induced reaction between the free leucine, isoleucine, or valine and the dicarbonyl compounds present in raw and heat skimmilk was detected in skimmilk heated as long as 90 minutes at 121° C. When leucine or isoleucine was added to skimmilks prior to heat treatment, 3-methylbutanal or 2-methylbutanal was isolated from the distillates of the heated skimmilks. The apparent low yield of these compounds suggests that the Strecker degradation may be somewhat inhibited in a medium such as skimmilk.






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Copyright © 1957 by the American Dairy Science Association ®.