| dc.description.abstract | This research aimed to evaluate total phenolic content, total anthocyanin content and DPPH scavenging capacity of Clitoria ternatea flower extracts obtained from using different ethanol concentrations (0, 20, 40, 60 and 80%) at different sonication durations (0, 30, 60, 90, 120 and 150 min), as well as different heat treatment temperatures (65, 70, 75, 80 and 85oC). Two extraction conditions demonstrated to have interaction effects (P < 0.001); whereas, there were advantageous impacts with the increase of time up to 90 min and ethanol concentration up to 60% but detrimental effects for a longer sonicating time or higher ethanol concentration. Heat treatment temperatures ranging from 65 to 80oC in 5 min did not significantly impact (P > 0.05) the total anthocyanin content and their stability after three weeks of storage at 4oC achieved the highest of 97% when heated at 65oC. Results of the present study clearly indicated sonication treatment to be effective in increasing the amounts of the bioactive compounds in Clitoria ternatea extracts that were relatively stable during six weeks stored at 4oC. Therefore, this flower extract could be further explored for commercial purposes to benefit the consumers.
Keywords: Clitoria ternatea, anthocyanin, sonication, ethanol, heat treatment, stability | en_US |
