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A study on the vitamin A activity of carotene in green fodder

Published online by Cambridge University Press:  27 March 2009

B. C. Ray Sarkar  and
K. C. Sen
B. C. Ray Sarkar
Affiliation:
Imperial Veterinary Research Institute, Izatnagar
K. C. Sen
Affiliation:
Imperial Dairy Research Institute, Bangalore, India
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Extract

1. With the object of determining the vitamin A value of carotene in different green fodders, an investigation has been undertaken to study (i) the relation between the chemically determined carotene and its biological activity as compared with that of standard carotene, (ii) the purity of apparent carotene from different sources, (iii) absorption of carotene in rats, and (iv) the relative efficiency of the standard carotene and preformed vitamin A.

2. Biological tests have shown that the chemical method of assay is a fair index of the true carotene content in green fodders, and carotene in the form of an extract is quite as effective in the system as that present in the plant tissues. β-Carotene appears to be predominant in these materials.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 36 , Issue 2 , April 1946 , pp. 95 - 99
Copyright
Copyright © Cambridge University Press 1946

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