This paper presents a vacuum-cavitated extraction method for glycyrrhizic acid(GA) extraction from supercritical extraction *** optimum extraction conditions are as follows:0.3% ammonia solution as the solvent,the rat...
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This paper presents a vacuum-cavitated extraction method for glycyrrhizic acid(GA) extraction from supercritical extraction *** optimum extraction conditions are as follows:0.3% ammonia solution as the solvent,the ratio of solvent to solid 10∶[KG-*3/5]1(mL/g),vacuum-cavitated time 15 min,and the crude (extract) yeild is 30.3%,in which the content of GA is 6.6%,so the GA extraction yeild is 2.0%.There are three extraction methods:soxhlet,ultrasonic wave,and vacuum-cavitated extraction *** results show that the extraction yield of GA by vacuum-cavitated extraction method is 1.6 times that by soxhlet extraction method and 1.2 times that by *** the same time,the vacuum-cavitated extraction method shows many advantages,including lower temperature,less solvent,shorter extraction time,higher extraction yield,and higher GA content in the crude *** vacuum-cavitated extraction method is new and highly(efficient),which can be utilized in the pharmaceutical industry.
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