桉叶多酚连续相变提取工艺的优化  

Optimizati of continuous phase transition extraction progress for eucalyptus' polyphenols

作　　者：谭荣威 曹庸[1] 利嘉城 

机构地区：[1]华南农业大学食品学院,广东广州510642

出　　处：《食品与机械》2015年第4期183-186,共4页Food and Machinery

基　　金：国家林业重大公益性行业专项(编号:201104003-03)

摘　　要：以桉树叶为原料,总多酚提取量为衡量指标,利用单因素试验和Box-behnken中心组合试验对桉叶多酚连续相变提取工艺条件进行筛选及优化,重点考察提取温度、提取时间、乙醇浓度对桉叶多酚提取量的影响。结果表明:其最佳连续相变提取工艺为提取温度80℃,提取时间120min,乙醇浓度78%,桉叶多酚提取量为(11.58±0.83)g/100g,与理论预测值12.01g/100g相近,相对偏差为3.65%。说明采用响应面分析法优化后得到桉叶多酚连续相变提取工艺参数较为可信,对实际生产具有一定指导意义。Eucalyptus＇ leaves were studied as the main raw material. The continuous phase transition extraction progress for eucalyptus＇ polyphenols was optimized by single factor test and Box behnken. The effects were discussed for extraction time, extraction tempera- ture and extraction solvent percentage on the yield of polyphenols. The optimal extraction conditions were found as follows： extraction temperature 79.99 ℃, extraction time 119.98 rain and solvent con- centration 78.13%. Under the optimal conditions, the yield of poly- phenols was 11. 58 g/100 g. The actual polyphenols yield was 12.01 g/100 g with the relative error 3.65%. The extraction conditions parameter obtained by the Response Surface Methodology to optimize the extraction technology was credible and own application value.

关 键 词：桉树叶 多酚 连续相变提取 

分 类 号：TQ28[化学工程—有机化工]