Warburton Emma, Norris Paul L, Goenaga-Infante Heidi
LGC Ltd, Queens Road, Teddington, Middlesex, TW11 0LY, UK.
Phytochem Anal. 2007 Mar-Apr;18(2):98-102. doi: 10.1002/pca.955.
A conventional extraction technique of sonication has been compared, in terms of extraction efficiency, extraction time and amount of solvent, with the more novel technique of accelerated solvent extraction for the extraction of kavain from the powdered roots of Piper methysticum (Kava) with acetone. The extracts were analysed using high-performance liquid chromatography with ultra violet detection. The effects of varying solvent volume and extraction time upon the quantity of kavain extracted with sonication, and the effects of varying temperature upon the kavain extraction efficiency by ASE, were investigated. ASE was found to be more efficient with respect to time and solvent volume required; however, a good agreement was found between the kavain concentration obtained using both extraction techniques.
就提取效率、提取时间和溶剂量而言，已将传统的超声提取技术与更新颖的加速溶剂萃取技术进行了比较，后者用于用丙酮从卡瓦胡椒（卡瓦）的粉末状根中提取卡瓦因。提取物采用带紫外检测的高效液相色谱法进行分析。研究了不同溶剂量和提取时间对超声提取卡瓦因量的影响，以及不同温度对加速溶剂萃取法提取卡瓦因效率的影响。结果发现，加速溶剂萃取法在所需时间和溶剂量方面更高效；然而，两种提取技术获得的卡瓦因浓度之间存在良好的一致性。
