肉桂油提纯肉桂醛的工艺研究

采用先减压蒸馏再分子蒸馏技术对肉桂油中肉桂醛的分离提纯进行了研究,通过GC分析分离物中肉桂醛的含量,优化了肉桂醛的分离工艺条件.减压蒸馏条件:压力1.333kPa,全回流塔顶温度70℃,轻组分收集塔顶温度70 ～ 100 ℃,过渡馏分收集塔顶温度100 ～ 115℃之间,粗醛收集塔顶温度115 ～ 125℃,回流比设定为2: 1,在此条件下,产品纯度和收率分别达到98.66%和84.68%.再经分子蒸馏,纯度可达99.5%,收率可达85.63%.

Process for Purification of Cinnamicaldehyde from Cinnamon Oil

A process for preparing cinnamaldehyde from cinnamon oil using vacuum distillation and molecular distillation was investigated. The optimum conditions of the process for obtaining high-purity and high-yield product were determined by analyzing the relative content of cinnamaldehyde with gas chromatography. The condition of vacuum distillation was as follows: pressure 1.333kPa, temperature of total reflux 60 - 70℃, temperature of collecting the light component 60 - 100℃, temperature of collecting the middle component 90 - 115℃, temperature of collecting crude cinnamaldehyde 110 - 125℃, reflux ratio 2: 1. Under these conditions, the purity and yield of the final product were 98.66% and 84.68%, respectively. The purity and yield reach 99.5% and 85.63% respectively after molecular distillation.