香草精油微胶囊的制备及其在卷烟纸中的应用研究

Preparation of Vanilla Essential Oil Microcapsules and Their Application in Cigarette Paper

关键词:  香草精油  微胶囊  性能表征  卷烟纸

Key Words:vanilla essential oil  microcapsules  performance characterization  cigarette paper

摘要:本研究采用复凝聚法，以香草精油为芯材，壳聚糖为壁材，司班-80为乳化剂制备香草精油微胶囊，对其进行包埋率、水分和溶解度测定，并对其理化特性进行表征，研究香草精油微胶囊的缓释性，然后采用加速试验对微胶囊耐候性进行考察，并将香草精油微胶囊在卷烟纸上进行加香应用。结果表明，壳聚糖可成功包埋香草精油制备香草精油微胶囊，香草精油微胶囊的平均粒径为482 nm，包埋率为41.1%，水分含量为7.2%，溶解度为46.2%；香草精油微胶囊热稳定性良好，存放13天后，质量损失4.2%，具有较好的缓释效果；加速试验结果表明，保存温度对其耐候性影响较大, 在较低温度（25和4 ℃）下保存10天后，其质量损失保持在30%以内；在60 ℃下保存10天后，质量损失最大，达36.2%，因此，香草精油微胶囊不适合在较高温度环境下保存；结合感官评吸结果可知，在卷烟纸上添加香草精油微胶囊的感官评吸效果优于空白卷烟，添加量为2.0%时，卷烟感官评吸整体效果较好，卷烟香气量增加，具有甜香韵、刺激性小、余味舒适的特性。

Abstract:This study employed the complex coacervation method to prepare vanilla essential oil microcapsules， using vanilla essential oil as the core material， chitosan as the wall material， and Span-80 as the emulsifier. The encapsulation efficiency， moisture content， and solubility of the microcapsules were measured， and their physicochemical properties were characterized. The sustained-release performance of the vanilla essential oil microcapsules was investigated， followed by an accelerated test to evaluate their weather resistance. Finally， the microcapsules were applied for fragrance enhancement on cigarette paper.The results showed that the chitosan could successfully encapsulate vanilla essential to prepare vanilla essential oil microcapsules， and the vanilla essential oil microcapsules had an average particle size of 482 nm， an encapsulation efficiency of 41.1%， a moisture content of 7.2%， and a solubility of 46.2%. The vanilla essential oil microcapsules exhibited good thermal stability， with a mass loss of only 4.2% after 13 days of storage， demonstrating effective sustained-release properties.Accelerated testing revealed that storage temperature significantly affected their weather resistance. When stored at lower temperatures （25 and 4 ℃） for 10 days， the mass loss remained below 30%. However， at 60 ℃， the mass loss reached a maximum of 36.2% after 10 days， indicating that vanilla essential oil microcapsules were unsuitable for storage in high-temperature environments. Sensory evaluation of cigarettes showed that adding vanilla microcapsules to cigarette paper improved the overall smoking experience compared to untreated cigarettes. At an addition amount of 2.0%， the microcapsules enhanced the aroma intensity， imparted a sweet fragrance， reduced irritation， and provided a more pleasant aftertaste， resulting in superior sensory performance.