采用微波法萃取新鲜番茄中番茄红素,运用响应面法优化萃取工艺。以乙酸乙酯作为提取剂,在单因素实验基础上,根据Box-Behnken原理选择因素及其水平:微波功率280、490、700W,微波时间120、150、180s,液料比(mL∶g)7∶1、8∶1、9∶1。响应面试验优化所得的番茄红素微波提取最佳工艺:微波功率为500W,微波处理时间为160s,液料比为8.2∶1(mL∶g),提取3次,其番茄红素的提取量可达到3.047mg/g干物质。

Based on single factor tests,the optimum conditions of lycopene from fresh tomatoes were obtained through Box-benhnken central combination design and RSM. The factors used were power of the microwave extraction (280,490 and 700 W),time of the extraction (120,150 and 180s),and the ratio of solvents to tomato paste (7,8 and 9 mL/g). The optimum extraction conditions were:microwave power 500W,extraction time 160s,ratio of tomato paste to solvents 8.2 mL/g and extraction three times.Under these conditions,lycopene yield was up to 3.047 mg/g.