摘要：Microwave-assisted extraction (MAE) is commonly used in recent years as an innovative approach to
enhancing the quality of extracts while decreasing the extraction time and the solvent consumption in
comparison to conventional techniques. In this study, the influence of microwave power, solid concentration
and extraction time on total phenolic content (TPC), colour values and dielectric properties of Caucasian
whortleberry were investigated. The process variables were optimized using response surface methodology.
The highest TPC from Caucasian whortleberry was obtained at an extraction time of 3.5 min, a solid
concentration of 15% and a microwave power of 360 W. The results showed that L* and a* values of the
extracts were highly correlated with TPC by a second-order polynomial. Moreover, no significant difference
was found in dielectric properties between the groups.
关键词：Caucasian whortleberry; microwave;assisted extraction; optimization; total phenolic content;
dielectric
