Capsaicin microencapsules were prepared by complex coacervation with gelatin and carboxymethyl cellulose (CMC). The process conditions were optimized by Orthogonal design on the base of single factor test. As wall material concentration (WMC), gelatin/CMC rate(GCR), core/wall rate(CWR) and pH, are 1%, 9:1, 1:1 and 4.5-4.6 respectively, the encapsulation yield is 92.53% and efficiency is 91.23%. The analysis of capsaicin microcapsule showed that water content is 3.12％ and the repose angle is 43.8°. The microcapsule particle and microstructure were valued by scanning electron microscope (SEM). FT-IR spectrum proved that the coacervate is formed successfully.

Popcorn machine was first used to pretreat rice husk and was compared with the following methods,including:3% NaOH;3% NH3.H2O;3% H2SO4;boiled in 5% NH3.H2O;microwave.The main components of the pretreated rice husk were determined and analyzed the rice husk with SEM,and the total sugar content of the rice husk after enzymatic hydrolysis were compared,The results showed that the total sugar content of the rice husk after pretreated increased by 395.55%,177.53%,168.62%,130.16%,50.61%,258.50%,respectively.The blast rice husk,as a by-product of blast rice,was produced with a relative low cost,and did little damage to the environment.So blasting rice husk with an improve popcorn machine is a promising method to industry.

The effect of microwave-assisted NaOH solution to pretreat rice husk was studied with RSM (Response Surface Method). When NaOH concentration; microwave power; irradiation time and solid-to-liquid ratio, are 1.5%; 650 w; 16 min and 1:12 respectively, the rice husk which are treated under such conditions can be hydrolyzed by the enzyme to get 56.24% sugars.

采用复合凝聚法，以明胶和羧甲基纤维素钠（CMC）为壁材，辣椒素为芯材制备辣椒素微胶囊，研究了壁材浓度、壁材比例（明胶／CMC）、芯壁比、凝聚过程中乳液的pH对辣椒素微胶囊包埋产率和效率的影响。通过试验确定了辣椒素微胶囊制备的最佳工艺条件为：壁材浓度1％，壁材明胶与CMC之比9：1，芯材与壁材的添加量比例1：1，凝聚过程中乳液的pH值为4．6。

This paper introduced new research progress on extraction and application of capsaicin at home and abroad.Summarized and compared the principle,advantage and disadvantage of several main extraction methods,the results indicated that integrated multiple technologies are the main direction of capsaicin extraction in future;then focusing on the application of biological control.Finally,this paper prospect the problems need to be solved during the research on capsaicin and the future application.