摘要
制备了香精-γ-聚谷氨酸/壳聚糖纳米胶囊,并研究其缓释性能。以γ-聚谷氨酸和壳聚糖为原料、茉莉香精为模型,利用聚电解质自组装法在常温常压下制备纳米胶囊,利用纳米粒度激光分析仪对其平均粒径和粒径分布进行测定,选出最优的条件,然后利用电子鼻对其进行缓释性能测定。当乳化剂(Teewen-80)添加量为10%、乙醇添加量为0.5mL、香精添加量为2%时,得到的茉莉香精纳米胶囊的平均粒径为153nm,粒度分布系数为0.208,Zeta电位为35.2mV。该茉莉香精纳米胶囊在室温下具有明显的缓释能力。因此,以生物材料γ-聚谷氨酸和壳聚糖为原料制备的香精纳米胶囊粒度均一,可以应用于香精缓释。
The essence -γ -polyglutamic acid/chitosan nanocapsule was prepared, and its delayed release property was also stud- ied. The nanocapsule based on self assembly of γ-polyglutamic acid （γ-PGA） and chitosan （CS） under normal temperature and pre,ssure was prepared using jasmine essence as a model. And the average particle size （Z- Ave）, polydispersity index （PDI） were measured at 25℃ with Malvern Zetasizer Nano-ZS. Then the electronic nose was used to measure the delayed release properties of the nanocapsules. The results showed that with the addition of 10% Teween-80, 2% essence and 0. 5 mL alcohol, the Z-Ave, PDI and Zeta-potential were 153 nm, 0.208 and 35.2 mV, respectively, What＇s more, thenanocapsulecarriedjas- mine essence had slow release capability at room temperature. The size of essence nanocapsule prepared by γ-PGA and CS was well-distributed, it could be used in delayed release of essence.
出处
《香料香精化妆品》
CAS
2013年第1期1-4,10,共5页
Flavour Fragrance Cosmetics
基金
上海市科委重点项目(10540501100)
关键词
Γ-聚谷氨酸
壳聚糖
纳米胶囊
香精
缓释
γ-polyglutamic acid （γ-PGA） chitosan （CS） nanocapsule essence delayed release
