纳米二氧化钛抗菌防雾膜的制备表征及对草莓的保鲜效果（英文）  

Characterizations and preservative effect of anti-fogging films prepared with nano-TiO_2

作　　者：隋思瑶[1] 马佳佳[1] 陆皓茜[1] 王毓宁[1] 丁鹏[2] 李军[2] Sui Siyao;Ma Jiajia;Lu Haoqian;Wang Yuning;Ding Peng;Li Jun(Suzhou Academy of Agricultural Sciences,Suzhou 215155,China;Research Center of Nanoscience and Nanotechnology,Shanghai University,Shanghai 200444,China)

机构地区：[1]苏州市农业科学院,苏州215155 [2]上海大学纳米科学与技术研究中心,上海200444

出　　处：《农业工程学报》2019年第5期302-310,共9页Transactions of the Chinese Society of Agricultural Engineering

基　　金：Suzhou Academy of Agricultural Sciences(8111701);Independent Innovation Funds of Agricultural Science and Technology of Jiangsu Province(CX(17)3029)

摘　　要：为延长果蔬的货架期,制备了由防雾剂(司班-20和吐温-20)和纳米二氧化钛组成的防雾膜。测定了该膜的光学性能、防雾性能、水蒸气透过率(WVTR)、接触角(CA)、扫描电镜(SEM)等性能,并与对照膜进行了比较。研究表明,P-ST膜和P-ST-Ti O2膜均有具有良好的防雾性,但P-ST-TiO_2膜的防雾性更加稳定长效。P-ST-TiO_2膜的接触角最小为12.5°,水蒸气透过率最高达到4.871 g/m2·d。通过添加纳米二氧化钛,P-TiO_2膜和P-ST-TiO_2膜均具备了紫外线阻隔性。草莓保鲜试验显示,P-ST-TiO 2膜可在室温下延长草莓货架期1周。P-ST-Ti O2膜可作为一种有潜力的防雾包装材料来提高果蔬的货架期。To prolong the shelf life of fruits and vegetables, an anti-fogging film composed of anti-fogging agents(span-20 and tween-20) and nano-TiO2 was prepared. Its structural properties and anti-fogging performance such as optical property, anti-fogging property, water vapor transmission rate(WVTR), contact angle(CA) and scanning electron microscopy(SEM) were all determined and compared with the contrast films. The results showed P-ST film and P-ST-TiO2 film both had good anti-fogging property, but the anti-fogging property of P-ST-TiO2 film was much more stable and efficient. The P-ST-TiO2 film had the lowest CA, which was 12.5°, while its WVTR was the highest with a value of 4.871 g/(m2·d). With the addition of nano-TiO2, P-TiO2 film and P-ST-TiO2 film were possessed of UV-light barrier property. Strawberry preservation indicated the P-ST-TiO2 film could prolong the shelf life of strawberries at room temperature for a week. This study suggests that P-ST-TiO2 film, as an anti-fogging packaging material, has shown the potential to prolong the shelf life of fruits and vegetables.

关 键 词：膜 纳米技术 表征 防雾 

分 类 号：TS206.4[轻工技术与工程—食品科学]