Journal
NATURAL PRODUCT RESEARCH
Volume 29, Issue 15, Pages 1485-1487Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/14786419.2015.1027892
Keywords
Clitoria ternatea; ultrasonic extraction; anthocyanin; response surface methodology
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The ultrasonic extraction (UE) method of anthocyanin from Clitoria ternatea flowers using response surface methodology (RSM) was performed in this study. By using RSM, the objective is to optimise the extraction yield of anthocyanin from C. ternatea which is influenced by various factors, including the extraction temperature, time, ratio of solvent to solid and ultrasonic power. The empirical model was investigated by performing first-level optimisation in a two-level factorial design with Design Expert 7 software. In comparison with the conventional solvent extraction, UE showed a 246.48% better extraction yield and produced an anthocyanin extract with a radical scavenging activity of 68.48% at the optimised factors of 50 degrees C, 150min, 15mL/g and 240W.
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