Abstract
Extracting flavone from bamboo leaves by ultrasonic, the flavonoid extraction conditions was optimized by single factor experiment and orthogonal experiment design, and the traditional heat reflux method was compared. The results showed that: the optimum process conditions of ultrasonic wave extraction of flavonoids from bamboo leaves were ethanol concentration of 70%, solid to liquid ratio of 1:20, extracting 20 min in 60 °C. Under this condition, extraction content of total flavonoids was up to 4.538 mg.g-1. And ultrasonic assisted extraction was superior to hot reflux extraction.
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