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.
Extraction and determination method of solanesol in waste tobacco leaves by combination of(ultrasonic) extraction and high performance liquid chromatography(HPLC) was ***(extraction) showed advantage over the other **...
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Extraction and determination method of solanesol in waste tobacco leaves by combination of(ultrasonic) extraction and high performance liquid chromatography(HPLC) was ***(extraction) showed advantage over the other *** the conditions of ultrasonic extraction were(optimized).The results show that extraction yield is the highest under 80 kHz for 20 min with 80% ethanol at a ratio of V(liquid)/m(solid)=10 mL/g.
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