Optimization of Ultrasonic Assisted-Green Deep Eutectic Solvent Extraction of Flavonoids from Jasmine
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Abstract:
Ten extract solvents including water, ethanol and eight types of deep eutectic solvents with microwave-assisted extraction and ultrasonic -assisted extraction were studied in order to explore a green and efficient technology for extraction of total flavonoids from jasmine. The effects of molar ratio of deep eutectic Solvents, water content, liquid - material ratio, ultrasonic time and ultrasonic power on the yield of flavonoids were investigated by single factor test. Based on single-factor tests, the quadratic regression parasitism model was established for obtain the optimal extraction conditions of flavonoids from Jasmine through the response surface methodology. It was found that the optimal extract process was ultrasonic assisted-green deep eutectic solvent, and extraction conditions were betaine hydrochloride/sucrose/H2O (1:1:94.50), liquid-material ratio 149:1 mL/g, time 20 min, ultrasonic power 90 W, the maximum yield of total flavonoids reached 15.24 mg/g, which is 677% of water extraction and 200% of orthogonal design-ultrasonic extraction. Response surface methodology was proved to be applicable for optimization of ultrasonic assisted-green deep eutectic solvent extraction of total flavonoids from Jasmine. Data support was provided for the further development and utilization of Jasmine resources.
