摘要
以干荷叶为原料,生物碱、黄酮含量和透光率为指标,比较了热水浸提工艺和微波辅助浸提工艺对荷叶茶水提物提取效果。在单因素实验基础上,通过正交实验优化了提取工艺。当浸提温度90℃、浸提时间15min、浸提水茶比100∶1(v/m)时,荷叶茶水提物中黄酮含量达到146.28mg/g,生物碱含量达到11.56mg/g,荷叶茶水提物透光率99.00%;当微波时间3min,微波功率700W,水茶比(v/m)150∶1时,荷叶茶水提物中黄酮含量达到146.39mg/g,生物碱含量达到20.52mg/g,荷叶茶水提物透光率85.11%。实验结果表明,微波浸提相对热水浸提有较好的浸提效果。
Lotus leaf tea was prepared with dry leaves as raw material, hot water extraction process and microwave extraction process were used to compare the effect to the alkaloids,flavonoids content and transmission rate of lotus leaf tea. The orthogonal extraction process was based on the single factor experiment. In hot water extraction,when the extraction temperature 90℃ ,extraction time 15min,extraction ratio 100：1,lotus leaf tea extracts flavonoids was 146.28mg/g,alkaloid content was 11.56mg/g,the transmittance was 99.00%. While in microwave extraction,when the microwave time 3min,microwave power 700W,extraction ratio 150：1,lotus leaf tea extracts flavonoids was 146.39mg/g,alkaloid content was 20.52mg/g,the transmittance was 85.11%. The results showed that the microwave extraction had better effects than hot water extraction.
出处
《食品工业科技》
CAS
CSCD
北大核心
2014年第14期305-308,314,共5页
Science and Technology of Food Industry
基金
公益性行业(农业)科研专项(201303073-2-1)
