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The proteins of green forage plants: II. The proteins of the mangold root. Comparison with the proteins of mangold seed

Published online by Cambridge University Press:  27 March 2009

W. L. Davies
W. L. Davies
Affiliation:
(Institute for the Study of Animal Nutrition, School of Agriculture, Cambridge University.)
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Extract

An account has been given of the different methods adopted for extracting protein material from the juice of the mangold root and subsequent purification of the crude material.

Three samples of protein have been isolated in different ways and their distribution of nitrogen determined by the van Slyke method.

Two globulins and an albumin have been extracted from mangold seed, the two globulins being isolated very pure and an elementary analysis done. These two proteins differed in sulphur and nitrogen contents and different physical properties justified their being looked on as two distinct proteins.

Distributions of nitrogen by the van Slyke method revealed differences in the globulins, especially in their contents of arginine and histidine.

The similarity between the root and the seed proteins has been pointed out, and the root protein has been compared with animal proteins.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 16 , Issue 2 , April 1926 , pp. 293 - 301
Copyright
Copyright © Cambridge University Press 1926

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References

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