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Abstract：
Natural polysaccharide-based hydrogels are promising in food and pharmaceutical applications. In this study, the potential of composite hydrogels prepared by carboxymethyl cellulose (CMC) and chitosan as glue for cigar wrapping applications was firstly studied. The impacts of degree of carboxymethyl substitution (DS) and the ratio of CMC:chitosan on the adhesive performance and rheological behaviors of composite hydrogels have been investigated. And the results indicated that relatively low DS of CMC and relatively low ratio of chitosan might be favorable for the adhesive properties of composite hydrogels. But a higher ratio of chitosan may significantly improve the rheological properties of composite hydrogels and alter their thermal-sensitivity. The impacts of chitosan on the wet ability with tobacco leaf, the morphology and the XRD patterns of composite hydrogels were also observed. The CMC-chitosan composite hydrogel could significantly decrease the total molds on tobacco leaf brought by CMC, and therefore may show great potential to improve the quality of cigar during long-term storage. All the information in this study is new, which could be useful for exploring the application of CMC-chitosan composite hydrogel in food, pharmaceutical, even other fields.
摘要：
基于天然多糖的水凝胶在食品和药物应用中具有前景。在这项研究中,首先研究了由羧甲基纤维素（CMC）和壳聚糖制备的复合水凝胶作为雪茄包装应用的潜力。研究了羧甲基取代度（DS）和CMC：壳聚糖的比例对复合水凝胶的粘合性能和流变行为的影响。结果表明，相对较低的CMCDS和相对较低的壳聚糖比例可能有利于复合水凝胶的粘合性能。但是，较高的壳聚糖比例可以显着改善复合水凝胶的流变性能并改变其热敏感性。壳聚糖对烟叶湿润性的影响,还观察了复合水凝胶的形貌和XRD图谱。CMC-壳聚糖复合水凝胶能显著降低CMC给烟叶带来的总霉菌,因此，在长期储存过程中可能显示出改善雪茄质量的巨大潜力。这项研究中的所有信息都是新的，探索CMC-壳聚糖复合水凝胶在食品中的应用,Pharmaceutical,甚至其他领域。
