摘要
为解决茶树精油稳定性差,对光、热、氧和湿度高度敏感,挥发性较强等问题,利用复合凝聚法制备微胶囊提高茶树精油稳定性。研究优化复合凝聚法制备茶树精油微胶囊的工艺,探究不同均质时间、均质速度、pH及凝聚时间对茶树精油乳液乳化效果和微胶囊的微观形态影响,并阐明茶树微胶囊包埋特性和缓释性能。研究结果表明,以明胶-六偏磷酸钠复合凝聚层为壁材,茶树精油乳液制备条件均质转速为20000 r/min,均质时间为15 min;茶树精油微胶囊复合凝聚pH为4.37,得到形态较均匀、微粒直径为0.80~1.32μm,包埋率为(44.75±0.09)%,缓释性能为65.13%。该研究为茶树精油微胶囊的制备提供必要的数据支撑。
To solve the problems of poor stability,high sensitivity to light,heat,oxygen,and humidity,and vigorous volatility of tea tree oils,microcapsules were prepared via a composite coagulation method to improve the stability of tea tree oils.The preparation process of tea tree oil microcapsules by the composite coagulation method was optimized.The effects of different homogenization times,homogenization speeds,pH values,and coagulation times on the emulsification effect of tea tree oil emulsions,and the micro-morphology of microcapsules were explored,and the embedding characteristics and slow-release properties of the microcapsules were clarified.The results showed that the preparation conditions of tea tree oil emulsion were prepared at 20000 r/min for 15 min,with a gelatin-sodium hexametaphosphate composite coacervate used as the wall material.The composite coagulation pH of the tea tree oil microcapsules was 4.37,the morphology was uniform,the particle diameter ranged from 0.8-1.32μm,the embedding rate was(44.75±0.09)%,and the sustained release performance was 65.13%.This study provides necessary data for the preparation of tea tree oil microcapsules.
作者
刘义军
朱琳
李晶莹
刘佳梦
夏秋瑜
林丽静
LIU Yijun;ZHU Lin;LI Jingying;LIU Jiameng;XIA Qiuyu;LIN Lijing(Institute of Agricultural Products Processing,Chinese Academy of Tropical Agricultural Sciences/Hainan Key Laboratory of Fruit and Vegetable Storage and Processing,Zhanjiang,Guangdong 524001,China;Key Laboratory of Tropical Crop Products Processing,Ministry of Agriculture and Rural Affairs,Zhanjiang,Guangdong 524001,China;College of Food Science and Technology,Guangdong Ocean University,Zhanjiang,Guangdong 524088,China)
出处
《热带农业科学》
2024年第7期94-100,共7页
Chinese Journal of Tropical Agriculture
基金
海南省自然科学基金高层次人才(No.321RC634)
新疆维吾尔自治区区域协同创新专项(上海合作组织科技伙伴计划)(No.2022E01023)。
关键词
茶树精油
复合凝聚
微胶囊
乳化均质
tea tree oil
complex coacervation
microcapsule
emulsification homogenization
