Optimization of the sonication extraction method of Hibiscus tiliaceus L. flowers
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- 作者：Maria Inê ; s Soares Melecchi ; Valé ; ria Flores Pé ; res ; Clá ; udio Dariva ; Claudia Alcaraz Zini ; Fernanda Contieri Abad ; Migdá ; lia Miranda Martinez and Elina Bastos Caramã ; o
- 关键词：Sonication ; Hibiscus tiliaceus L. ; GC/MS
- 刊名：Ultrasonics Sonochemistry
- 出版年：2006
- 出版时间：April 2006
- 年：2006
- 卷：13
- 期：3
- 页码：242-250
- 全文大小：131 K
文摘
The influence of several experimental parameters on the ultrasonic extraction of Hibiscus tiliaceus L. flowers were investigated: extraction time, solvent polarity, sample amount, solvent volume and sample particle size. It was concluded that the most influential variables were extraction time and solvent polarity. The optimized procedure employed 5 g of ground flowers, 150 mL of methanol and 140 min of extraction. The extracts were fractionated using preparative silica columns and the resulting fractions were analyzed by GC/MS. Some saturated hydrocarbons, fatty acids, fatty acid methyl esters, phytosterols, and vitamin E were identified in the plant extracts.