Extraction process optimization and storage conditions of naringin in pomelo peel
In order to obtain the optimized parameters for the naringin extraction process and reliable storage conditions,fresh Shatian pomelo peel was used as raw material to analyze the influencing factors of ultrasonic-assisted extraction of naringin.On the basis of single factor experiment,the response surface experiment was optimized,and the effects of storage conditions on the stability of naringin were investigated.The results show that the optimum extraction conditions of naringin are as follows:liquid-solid ratio of 20∶1(mL∶g),ultrasonic extraction time of 42 min,and ethanol volume percentage of 65% .Under these conditions,the yield of naringin is(9.96±0.14)% .In order to reduce the loss of naringin during storage,it is not suitable to be under dry conditions,but frozen at-18℃ within 6 months.
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