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目的研究百里香挥发油p-环糊精(β-CD)包合的最佳工艺条件。方法以挥发油利用率和包合物得率的综合评分为筛选指标,在单因素试验的基础上选择百里香挥发油与p-CD的用量比、包合温度、包合时间为考察因素,采用L9(33)正交试验设计优化百里香挥发油β-CD包合工艺。结果最佳包合工艺条件为百里香挥发油与p-CD的用量比为1:8,包合时间为2.5 h,包合温度为40℃,在此最佳工艺下,包合物得率、挥发油利用率和包合物含油率分别为88.76%,89.62%和9.41%。结论优选得到的百里香挥发油p-CD包合工艺合理、稳定、可行,有效地提高了百里香挥发油的稳定性。
Objective To study the optimum conditions for the inclusion of thymus essential oil p-cyclodextrin (β-CD). Methods Based on the single factor test, the ratio of the volatile oil to the content of p-CD, the inclusion temperature and the inclusion time were selected as the screening indexes by using the comprehensive score of volatile oil utilization and inclusion compound yield. 33) orthogonal experimental design optimization thyme volatile oil β-CD inclusion process. Results The optimal conditions for the inclusion process were as follows: the optimal ratio of thymus volatile oil to p-CD was 1: 8, the inclusion time was 2.5 h, and the inclusion temperature was 40 ℃. Under the optimal conditions, the inclusion compound yield, volatile oil Utilization rate and inclusion oil content were 88.76%, 89.62% and 9.41% respectively. Conclusion The p-CD inclusion process of the thymus essential oil obtained by the method is reasonable, stable and feasible, and effectively improves the stability of the essential oil of thyme.