闫德敏,张立彦

• 1:华南理工大学食品科学与工程学院

摘要(Abstract)：

以明胶和阿拉伯胶为壁材，采用复合凝聚法制备牛至-高良姜复合精油微胶囊，以包埋率为指标，通过单因素试验和响应面试验优化后得到最佳制备条件，并对复合精油微胶囊的理化性能进行了表征，评价其缓释性能、抗氧化活性、抗菌性能。结果表明，复合精油微胶囊的最优制备条件为芯壁比1∶1、壁材比(明胶∶阿拉伯胶)9∶10、凝聚温度43℃、凝聚时间36 min,该条件下复合精油微胶囊包埋率可达70.85%,微胶囊平均粒径为44.5μm,均一性和球形度良好且表面光滑，具有良好的机械性能；傅里叶变换红外光谱证实精油被成功包埋，壁材分子之间发生结合凝聚；与复合精油相比，复合精油微胶囊的热稳定性、抗氧化活性、抗菌性能得到显著提高(P<0.05),且具有良好的缓释性能，精油在微胶囊内以Fickian模式扩散。该研究结果可为植物精油在食品保鲜方面的应用奠定基础。

关键词(KeyWords)： 牛至精油;高良姜精油;微胶囊;响应面优化;性能表征;缓释性能;抗氧化活性;抗菌性能

Abstract:

Keywords:

基金项目(Foundation): 广州市重点研发计划项目(20220610178)

作者(Author): 闫德敏,张立彦

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