cover image: Indian Medical Research Memoirs  Supplementary Series to the Indian Journal of Medical Research  March 1930

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Indian Medical Research Memoirs Supplementary Series to the Indian Journal of Medical Research March 1930

1930

The jungle hulas inhabiting the Nagari Hills of the North Arcot District are in the habit of chewing a few green leaves in the morning in order to keep their urine clear.. [...] The above-mentioned peculiar properties of the leaves were attributed to the substance designated as gymnemic acid ' (allied to chrysophanic acid) which was stated to exist in them as potassium salt and to be best prepared by treating an aqueous solution of the alcoholic extract with a mineral acid washing the precipitate and drying it in a current of hot air or in a desiccator. [...] From analysis of the acid the formula C321155012 may be deduced.' ' The silver and lead salts of gymnemic acid form black powders and the analysis of these affords evidence that the acid is monobasic while the amount of alkali.required for its neutralization indicates a molecular weight corresponding to the above formula. [...] After removing the greater part of the alcohol by distillation a quantity of water was added to the concentrated extract and the mixture heated on a water-bath in order to eliminate the remainder of the alcohol. [...] After removing the greater part of the alcohol a quantity of water was added to the concentrated extract and the mixture treated with dilute sulphuric acid in slight excess.
technology medicine science
Pages
90
Published in
India
SARF Document ID
sarf.120195
Segment Pages Author Actions
Frontmatter
i-iii K. S. Mhaskar, J. F. Caius view
A Study of Indian Medicinal Plants. II. Gymnema Sylvestre Bn.
1-50 K. S. Mhaskar, J. F. Caius view
A Comparative Study of the Dried Barks of the Commoner Indian Species of Genus Terminalia Linn.
51-ix K. S. Mhaskar, J. F. Caius, Mozelle Isaacs view
Backmatter
i-i K. S. Mhaskar, J. F. Caius view

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