PGA/PBAT保鲜膜对蓝莓果实保鲜性质动力学分析  

Kinetic analysis of preservation properties of blueberry fruit with PGA/PBAT films

作　　者：温亮[2] 尚伟 尹甜[2] 刘明昊 谷晏 孙颖[1] 翁云宣[1] 赵峙尧 WEN Liang;SHANG Wei;YIN Tian;LIU Minghao;GU Yan;SUN Ying;WENG Yunxuan;ZHAO Zhiyao(Beijing Technology and Business University,Beijing 100048;China Shenhua Coal to Liquid and Chemical Co,Ltd,Beijing 100011;Market Supervision and Administration Bureau of Xicheng District,Beijing 100032)

机构地区：[1]北京工商大学,北京100048 [2]中国神华煤制油化工有限公司,北京100011 [3]北京市西城区市场监督管理局,北京100032

出　　处：《中国塑料》2023年第5期90-97,共8页China Plastics

基　　金：北京市教育委员会科学研究计划项目资助(KM202210011006);国家自然科学基金面上基金(52073004);北京市自然科学基金面上科学基金项目(4222042)。

摘　　要：以蓝莓为研究对象,利用双螺杆挤出机和流延机制备聚乙醇酸(PGA)/聚对苯二甲酸-己二酸丁二酯(PBAT)生物降解复合膜,以酶活、生物活性化合物、果实品质、感官评价为考核指标,探究了不同组成的复合膜对蓝莓保鲜品质的影响。结果表明:60%(质量分数,下同)PGA/40%PBAT组,可以有效抑制H_(2)O_(2)含量升高,延缓总酚、总黄酮、可溶性固形物含量(SSC)及感官评分降低。因此,PGA和PBAT复配后的生物降解保鲜膜更有利于蓝莓的保鲜,尤其是60%PGA/40%PBAT保鲜膜。Taking blueberry as a research object,poly(glycolic acid)(PGA)/poly(butylene terephthalate)(PBAT)biodegradable composite films were prepared by using a twin-screw extruder and a film blowing mechanism.The effects of different composite films on the fresh-keeping quality of blueberry were investigated by taking enzyme activity,bioactive compounds,fruit quality and sensory evaluation as assessment indicators.The results indicated that the PGA/PBAT composite film at a weight ratio of 60/40 could effectively inhibit an increase in the H_(2)O_(2)content and delay a decrease in the total phenol content,total flavonoids content,soluble solids content and sensory score.Therefore,the biodegradable preservative films based on the PGA and PBAT compounds are very advantageous to the preservation of blueberries,especially for the PGA/PBAT composite film at a weight ratio of 60/40.

关 键 词：蓝莓 保鲜 生物降解保鲜膜 动力学 感官评价 

分 类 号：TQ317[化学工程—高聚物工业]