2002
DOI: 10.1002/1615-9314(20020101)25:1/2<86::aid-jssc86>3.0.co;2-7
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Abstract: The objective of this work was to carry out a comparative study of conventional extraction methods (maceration and Soxhlet) versus sonication in the case of the flowers of Hibiscus tiliaceus, collected at the Santa Catarina swamps (in the south of Brazil), using three solvents with different degrees of polarity. All extracts were analyzed by GC/MSD. For all the extraction procedures used, the initial extraction was performed with hexane with the aim of completely removing non‐polar compounds (mainly hydrocarbo… Show more

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Cited by 29 publications
(19 citation statements)
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“…In general, ethanol was considered a better solvent, yielding higher amount of extract than hexane, both for leaves and fruits, as already found in the literature. 8 According to Sticher,22 using non-polar solvents (such as hexane), more lipophilic compounds are obtained, while polar solvents as alcohols provide an extract with a broad spectrum of polar and nonpolar substances, increasing the yield of extraction. The yields for the leaves extracts were slightly higher than those obtained for the fruits, considering both solvents.…”
Section: Resultsmentioning
confidence: 99%
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“…In general, ethanol was considered a better solvent, yielding higher amount of extract than hexane, both for leaves and fruits, as already found in the literature. 8 According to Sticher,22 using non-polar solvents (such as hexane), more lipophilic compounds are obtained, while polar solvents as alcohols provide an extract with a broad spectrum of polar and nonpolar substances, increasing the yield of extraction. The yields for the leaves extracts were slightly higher than those obtained for the fruits, considering both solvents.…”
Section: Resultsmentioning
confidence: 99%
“…9 UAE is one of the most efficient extraction techniques due to its intense interaction between solid (plant) and liquid (solvent) phases. [8][9][10][11] Sonication has some advantages over other extraction techniques such as the low cost, simplicity, efficiency, reproducibility and the applicability for a high range of samples. 8,[10][11][12] The implosion of bubbles generated by cavitation releases heat and increases turbulence on the liquid, causing the disruption of the plant cells, allowing the diffusion of the solvent into the matrix.…”
Section: Introductionmentioning
confidence: 99%
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“…This technique is also widely employed in the chemical characterization of natural products (Melecchi et al, 2002;Zeng and Khan, 1995;Mossi et al, 2004).…”
Section: Introductionmentioning
confidence: 99%