纳米TiO_2/壳聚糖复合膜保鲜草莓的研究  

Research on Fresh-keeping of Strawberry by Coating the Chitosan/Nano-TiO_2 Composite Membrane

作　　者：赵琪[1] 李宗磊[1] 王明力[2] 

机构地区：[1]徐州工业职业技术学院化学工程技术学院,江苏徐州221140 [2]贵州省发酵工程与生物制药重点实验室,贵州贵阳550003

出　　处：《贵州大学学报（自然科学版）》2011年第5期49-52,58,共5页Journal of Guizhou University:Natural Sciences

基　　金：国家自然科学基金"纳米SiOx对壳聚糖涂膜性能的影响及果蔬保鲜机理的研究"(31060229);贵州大学引进人才科研"壳聚糖复合涂膜的研究及在果蔬保鲜中应用"[贵大人基合字(2008)012]徐州工业职业技术学院院级课题(XGY200804)项目

摘　　要：优化了壳聚糖/纳米TiO2复合膜透CO2性,并将其应用于草莓保鲜实验。结果表明,当壳聚糖含量为1.0 g,纳米TiO2含量为0.05 g,冰乙酸含量为1.80 mL时,壳聚糖/纳米TiO2复合膜透CO2量达到最低为0.0629 g/d;优化膜处理的草莓室温下贮藏6 d后,腐烂指数比空白组降低了11.11%.这证明,优化膜处理可有效延长草莓室温下的贮藏保鲜时间。The chitosan/nano-TiO2 composite membrane was optimized about CO2 permeability, and the optimized composite membrane was applied in fresh-keeping strawberries. The results show that the best formula of chitosan composite membrane is 1.0g for chitosan content, 0. 05g for nano-TiO2 content, 1.80mL for glacial acetic acid content, and the CO2 coefficient of optimized membrane permeability is 0. 0629g/d. Strawberries of coating the optimized membrane were stored up six days at room temperature, decay index of strawberries of coating optimized membrane than decay index of strawberries of uncoated membrane is decreased 11. 11%. The result prove that the storage period of strawberries were prolonged at room temperature by coating optimized membrane.

关 键 词：壳聚糖 纳米TIO2 复合膜 草莓 保鲜 

分 类 号：TS972.24[轻工技术与工程]