Abstract
IT has been shown by Frölich1 that chicks, fed underheated, low-quality soy bean oil meal, were depleted of their vitamin B12 reserves and consequently required the supply of dietary vitamin B12, probably due to the antiproteolytic activity2 or soyin content3 of the underheated meal. Baliga and Rajagopalan4 have reported that vitamin B12 at 50 µgm. per kilo of the diet containing 10 per cent raw soy bean protein (without any heat treatment) enhanced the biological value of the protein (the biological values for the raw and vitamin B12 supplemented soy bean protein being 48.6 ± 0.9 and 77.6 ± 1.8 respectively). This would suggest that vitamin B12 has overcome the adverse effect of the proteolytic inhibitor and soyin. These studies were extended to determine the effect of vitamin B12 on the biological value of autoclaved soy bean meal. These observations are presented here.
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References
Frölich, Alan, Nature, 173, 132 (1954).
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Liener, I. E., J. Nut., 49, 527 (1953).
Baliga, B. R., and Rajagopalan, R., Curr. Sci., 23, 51 (1954).
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Henry, K. M., and Kon, S. K., Biochem. J., 48, xi (1951).
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BALIGA, B., BALAKRISHNAN, S. & RAJAGOPALAN, R. Biological Value of Proteins as influenced by Dietary Vitamin B12 . Nature 174, 35–36 (1954). https://doi.org/10.1038/174035b0
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DOI: https://doi.org/10.1038/174035b0
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