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STUDY ON MICROWAVE EXTRACTION OF PIGMENT FROM CERCIS CHINENSIS BUNGE

Li Yu, OU Bu-qing

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Abstract

As a new method of extraction,microwave was used to extract pigment from flowers of Cercis chinensis Bunge.The extraction processes were investigated to obtain the optimal conditions as follows:dry flower 0.200 0 g,(solvent) 95% alcohol,ratio of raw material to solvent 1∶50(g∶mL),microwave power 648 W,extraction time 30 s,twice of extraction.Results are:extraction rate 92.1%,yield 9.48% and absorbance E(1%,549 nm) 53.3.Compared with normal solvent extraction,microwave extraction time could be reduced from 24 h to 30 s,and the extraction yield (increase) from 90.2% to 92.1%.

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What this paper is about

As a new method of extraction,microwave was used to extract pigment from flowers of Cercis chinensis Bunge.The extraction processes were investigated to obtain the optimal conditions as follows:dry flower 0.200 0 g,(solvent) 95% alcohol,ratio of raw material to solvent 1∶50(g∶mL),microwave power 648 W,extraction time 30 s,twice of extraction.Results are:extraction rate 92.1%,yield 9.48% and absorbance E(1%,549 nm) 53.3.Compared with normal solvent extraction,microwave extraction time could be reduced from 24 h to 30 s,and the extraction yield (increase) from 90.2% to 92.1%.

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Available abstract

As a new method of extraction,microwave was used to extract pigment from flowers of Cercis chinensis Bunge.The extraction processes were investigated to obtain the optimal conditions as follows:dry flower 0.200 0 g,(solvent) 95% alcohol,ratio of raw material to solvent 1∶50(g∶mL),microwave power 648 W,extraction time 30 s,twice of extraction.Results are:extraction rate 92.1%,yield 9.48% and absorbance E(1%,549 nm) 53.3.Compared with normal solvent extraction,microwave extraction time could be reduced from 24 h to 30 s,and the extraction yield (increase) from 90.2% to 92.1%.

Key concepts: Extraction (chemistry), Chemistry, Absorbance, Yield (engineering), Pigment, Solvent, Chromatography, Raw material

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