Journal
ULTRASONICS SONOCHEMISTRY
Volume 13, Issue 3, Pages 242-250Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.ultsonch.2005.02.003
Keywords
sonication; Hibiscus tiliaceus L; GC/MS
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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. (c) 2005 Elsevier B.V. All rights reserved.
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