Chemical composition of Vitis quadrangular is (wall.)

Bhaskara Rama Murti, P. ; Seshadri, T. R. (1939) Chemical composition of Vitis quadrangular is (wall.) Proceedings of the Indian Academy of Science, Section A, 9 (2). pp. 121-127. ISSN 0370-0089

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A detailed chemical examination of the stems and leaves of Vitis quadrangularis for the organic components and mineral matter has been made. Besides gums and pectins, a yellow wax and tartaric acid as the acid potassium salt were isolated. The presence of calcium oxalate crystals may account for the irritating action of the freshly cut stem on the skin. The plant contains a high percentage of mineral matter and the ash consists mostly of the carbonates of magnesium, calcium and the alkali metals. As a source of carotene it occupies a middle place and it contains a remarkably high percentage of ascorbic acid (Vitamin C).

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