Open AccessPhysico-chemical investigation of variously extracted medicinally useful materials from the rhizomes of Alpinia calcarata Rosc. of Kumaun Region, India
Author(s) -
Durvesh K. Tyagi,
Nikhil Kumar
Publication year - 2013
Publication title -
environment conservation journal/environment conservation journal
Language(s) - English
Resource type - Journals
eISSN - 2278-5124
pISSN - 0972-3099
DOI - 10.36953/ecj.2013.141222
Subject(s) - petroleum ether , rhizome , diethyl ether , chemistry , solvent , ether , alpinia , chloroform , organic chemistry , chromatography , extraction (chemistry) , traditional medicine , botany , biology , medicine
Extractions of medicinally useful materials from the rhizome of Alpinia calcarata Rosc. separately through solvents of decreasing polarities, viz., water, ethanol, diethyl ether and petroleum ether are also carried out. In the rhizome of A. calcarata the water extract has maximum yield.Odours vary in differently extracted materials. Diethyl ether and petroleum ether extracted materials show a sufficientdegree of unsaturation. All of the solvent extracted materials are dextro rotatory. Specific gravities, refractive indices, acid, saponification and iodine values of these variously extracted materials are also reported. Tests for the presence of specific natural products indicate the presence of steroids and flavonoids in most of the materials. Some of them possess carbohydrates also.