Journal of Nutrition

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Journal of Nutrition Vol. 20 No. 3 September 1940, pp. 289-296
Copyright © 1940 by American Society for Nutrition
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Pectic Enzymes

V. The Fate of Pectins in the Animal Body1

One Figure

Z. I. Kertesz

Division of Chemistry, New York State Agricultural Experiment Station, Geneva

Tests made with human subjects and dogs indicated that saliva and gastric juice do not contain enzymes acting upon pectin. Pectin passed through the stomach and part of the small intestine of a dog could be recovered without loss. Trypsin, pepsin and rennet had no effect on pectin in vitro, but pectin incubated with feces was rapidly decomposed.

It appears probable that pectin taken orally is not attacked until it reaches the large intestine where it is completely hydrolysed by bacterial enzymes.

1 Approved by the Director of the New York State Agricultural Experiment Station for publication as Journal Paper No. 379, April 2, 1940. These investigations have been supported by the Harold H. Clapp, Inc. Grant. Presented at the Cincinnati meeting of the American Chemical Society, April, 1940.

Manuscript received 20 May 1940.




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