基于响应面-主成分分析法优化再造烟叶表面改性膜材料的配方研究OA北大核心CSTPCD

Targeting the problem of high moisture absorption characteristic of reconstituted tobacco used for heated cigarette,aiming at overcoming the defects of easy moisture absorption in cigarette making,packaging and storage,ensuring processing resistance and stability of sensory quality,chitosan,paraffin and xanthan gum were used as the formulation components to develop one membrane material coating with moderate hydrophobicity used in the surface hydrophobic modification of reconstituted tobacco.Based on the single factor experimental,the response surface and principal component analysis method were carried out to optimize the coating formula.The results indicated that:the optimized coating mass of chitosan,paraffin and xanthan gum were 0.6g/m2,1.5 g/m2,1.6 g/m2,respectively.Under this condition,the contact angle,moisture absorption rate,moisture release rate and sensory score of modified reconstituted tobacco were 87.542°,10.98％,2.16％,and 87,respectively.compared to the conventional sample,the moisture absorption rate and the release rate of modified reconstituted tobacco decreased significantly,while the sensory quality remained and the tensile strength rose greatly,indicating that the comprehensive characteristic was enhanced significantly.