Summary
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1.
Ten varieties of groundnut were analysed for free and bound forms of vitamin B1 About 50 per cent, of total vitamin exists in the bound form.
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2.
Digestion with papain or a mixture of papain and takadiastase have the same effect in transforming the bound vitamin into free form. The bound vitamin B1 is not a cocarboxylase.
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3.
The bound form of the vitamin can be extracted completely, with 10 per cent. NaCl and can also be precipitated with 4 per cent, trichloroacetic acid. It, therefore, exists bound to protein.
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Reddi, K.K., Giri, K.V. The nutritive and vitamin value of groundnut. Proc. Indian Acad. Sci. 29, 65–69 (1949). https://doi.org/10.1007/BF03049989
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DOI: https://doi.org/10.1007/BF03049989