绿叶挥发性物质β- 环糊精微胶囊的制备及性质测定

    Preparation and characterization of 茁-cyclodextrin microcapsule of green leaf volatiles

    • 摘要: 以茁-环糊精为壁材对绿叶挥发性物质(E)-2-己烯醛、(E)-2-己烯醇进行包合,制备了2 种绿叶挥发性物质的茁-环糊精缓释微胶囊。通过紫外吸收光谱、红外光谱对微胶囊进行了表征;利用紫外分光光度法定量测定了2种绿叶挥发性物质在微胶囊中的包合比,并测定了2 种绿叶挥发性物质的释放速率。结果表明,茁-环糊精能够与(E)-2-己烯醛、(E)-2-己烯醇形成包合物微胶囊,微胶囊中茁-环糊精与(E)-2-己烯醛和(E)-2-己烯醇的包合比分别为91.6%和90.2%;22益下,空气流速为0.1 L/min 时微胶囊中(E)-2-己烯醛和(E)-2-己烯醇的释放速度分别为4.09(依0.03)伊10-2、4.06(依0.07)伊10-2 mg/h窑g。

       

      Abstract: Using cyclodextrin as the encapsulant to complex with two species of green leaf volatiles (GLVs) (E)-2- hexenal and (E)-2-hexen-1-ol, and obtained the GLV--CD microcapsule respectively. The -CD microcapsule泽were analyzed by UV and FTIR spectrum. The inclusion ratio of GLV-茁-CD microcapsules were determined by ultraviolet spectrophotometry. The release rates of (E)-2-hexenal and (E)-2-hexen-1-ol were also detected. The results showed that 茁-cyclodextrin form complexes with (E)-2-hexenal and (E)-2-hexen-1-ol, and the inclusion ratioes of two GLV compounds were 91.6% and 90.2%. With an airflow of 0.1 L/min, the average release rates of (E)-2-hexenal and (E)-2- hexen-1-ol from microcapsule powder were 4.09(0.03)10-2 and 4.06(0.07)10-2 mg/hg respectively (22).

       

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