Study on extraction of naringin from grapefruit peels by ultrasonic wave | 葡萄柚柚皮苷超声提取研究_____

Chinese. ［目的］优化用超声波提取葡萄柚柚皮中柚皮苷的工艺条件。［方法］以新鲜无病虫害的美国葡萄柚柚皮为试材，通过单因素试验考察了提取液体积分数，提取时间和固液比3个因素对柚皮苷提取率的影响，并在此基础上，通过正交试验优化柚皮苷提取的工艺条件。［结果］通过试验得出的标准曲线为：Y=30.884x+0.012，R2=0.999 1。_由极差分析可知，固液比对柚皮苷提取率的影响最大，提取时间对柚皮苷提取率的影响次之，而乙醇的体积分数对柚皮苷提取率的影响最小。较佳的柚皮苷提取工艺条件是：提取时间为25 min，提取液体积分数是70%，固液比是1∶20。在此工艺条件下进行了验证试验，结果表明，柚皮苷提取率是7.860%。［结论］该研究为美国葡萄柚的综合利用和开发提供了一定的理论依据。

English. ［Objective］ The study aimed to optimum the technology condition for extracting the naringin from grapefruit peels by ultrasonic wave. ［Method］With the fresh American grapefruit peels without insect pests as the tested materials, the effects of 3 factors of the extraction liquid volume fraction, extraction time and solid-liquid ratio on the extraction rate of the naringin were inspected through the single factor test, on this basis, the technology conditions for extracting the naringin were optimized through the orthogonal test. ［Result］ Through the test the standard curve was obtained as Y=30.884x+0.012，R2=0.999 1. The range analysis showed that, as for the effects of 3 factors on the extraction rate of the naringin, the effect of the solid_liquid ratio was maximum, that of the extraction time was next and that of the ethanol volume fraction was minimum. The better technology conditions for extracting the naringin was as follows: the extraction time was 25 min, the extraction liquid volume fraction was 70% and the solid-liquid ratio was 1∶20. The verifying test under these technology conditions showed that the extraction rate of the naring was 7.860%. ［Conclusion］ The study provided the theoretical basis for the comprehensive utilization and development of American grapefruit._