江香薷挥发油提取率与提取时间的动力学关系

Dynamic Relationship Between Extraction Yield And Extraction Time of Essential Oil from Mosla Chinensis Maxim cv. Jiangxiangru

摘要:

采用L9(34)正交试验法,以料液比、浸泡时间和提取时间为考察因素,研究得出江香薷挥发油最佳提取工艺条件:料液比1∶15 g/mL,浸泡时间0.5 h,提取时间6 h,提取率为0.934%。在此条件下,采用适当的数学模型对提取过程中试验数据进行拟合,得到挥发油提取率与提取时间的动力学关系式ln(V0-V)=-0.758 1t+0.830 8,K=0.758 1,A=0.830 8(R2=0.988 4)。正交试验表明,提取时间对挥发油的提取率具有显著影响。该动力学方程与挥发油的实际提取过程相似,可有效反映挥发油提取率与提取时间之间的关系。

Abstract:

Using an orthogonal design,this study was carried out to optimize the extraction conditions to extract essential oil from Mosla Chinensis Maxim cv. Jiangxiangru. The optimum extraction conditions were determined as material to liquid ratio 1∶15(g/mL),soaking time 0.5 h and extraction time 6 h,with an extraction yield was 0.934%. After applying an appropriate mathematical model to fit the experimental data during the extraction process under the optimum extraction conditions,the kinetic equation between extraction yield and extraction time could be expressed as ln(V0-V) =-0.758 1t +0.830 8,K =0.758 1,A =0.830 8(R2=0.988 4). Orthogonal experimental results showed that the extraction time had a statistically significant impact on the extraction yield of essential oil. With successful simulation of the real extraction process,the kinetic equation could effectively reflect the relationship between the extraction yield and extraction time of essential oil from Mosla Chinensis Maxim cv. Jiangxiangru.