摘要
对杭白菊蒸汽杀青-烘干工艺进行优化,以绿原酸、木犀草苷、3,5-O-二咖啡酰基奎宁酸含量为评价指标,在单因素试验基础上,采用响应面法优化菊花烘干工艺。研究表明,最优工艺条件为蒸汽杀青80 s后于68℃烘干3.9 h,室温回潮48 h,在58℃下复烘2.4 h,此工艺条件下得到的菊花品质较佳,综合指标为0.460%,回归模型的预测值与实测值的相对误差为0.44%。
The stream-blanched drying process of Hangzhou white chrysanthemum was optimized. The contents of chlorogenic acid,luteolin and 3,5-O-dicaffeoyl quinic acid were used as evaluation indexes. Response surface methodology was applied to optimize the drying process on the basis of single-factor test. The results showed that the optimum conditions of drying process were:streaming time 80 s,drying temperature 68 ℃,drying time 3.9 h,then moisture regaining 48 h,re-drying temperature 58 ℃,re-drying time 2.4 h,the comprehensive index of chrysanthemum with the optimized technology was 0.460 %,in close agreement with the predictive maximum value within a relative error of 0.44 %.
引文
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