PBAT/PLLA薄膜对白鳞蘑菇的保鲜效果  

Preservation effect of PBAT/PLLA film on Agaricus bernardii

作　　者：王莉梅 陆浩 张靳 胡健 梁乌日图白音 董同力嘎 WANG Limei;LU Hao;ZHANG Jin;HU Jian;LIANG Uritubaiyin;DONG Tungalag(Inner Mongolia Agricultural University,Hohhot 010018,China;Inner Mongolia Academy of Agricultural&Animal Husbandry Sciences,Hohhot 010031,China)

机构地区：[1]内蒙古农业大学食品科学与工程学院,内蒙古呼和浩特010018 [2]内蒙古自治区农牧业科学院,内蒙古呼和浩特010031

出　　处：《食品与发酵工业》2022年第5期219-226,共8页Food and Fermentation Industries

基　　金：内蒙古自治区自然科学面上基金项目(2019MS03062)。

摘　　要：探讨添加不同质量分数(10%、20%、30%)左旋聚乳酸[poly(L-lactic acid),PLLA]的聚己二酸/对苯二甲酸丁二酯[poly(butylene adipate terephthalate),PBAT](PBAT/PLLA)气调薄膜对白鳞蘑菇的保鲜效果。贮藏条件为4℃,相对湿度90%,贮藏期间测定包装内气体组分和白鳞蘑菇相关理化指标。结果表明,PBAT/PLLA 30%共混薄膜能够使包装内形成平衡状态低O_(2)(0.01%~0.02%)、高CO_(2)(4.85%~5.15%)环境,能较好地保持硬度(9.00 kg/cm^(2)),贮藏后期可溶性蛋白含量为0.35 mg/g、可溶性糖0.85%、总酚9.14 mg/g,延缓营养成分的下降速度,减缓失重率和丙二醛的上升速度,贮藏期15 d内能保持较好的感官品质和营养品质。综合各项指标表明,生物可降解PBAT/PLLA 30%气调包装处理可以维持白鳞蘑菇贮藏品质并延缓采后衰老过程。The aim of this study was to investigate the preservation effect of poly(butylene adipate terephthalate)/poly(L-lactic acid)(PBAT/PLLA) film added with different mass fractions of PLLA(10%, 20%, 30%) on Agaricus bernardii. The storage condition was 4 ℃ and with a 90% relative humidity. The gas composition in packaging bag and physical indexes of A.bernardii were measured during storage. The results showed that an equilibrium state of low O_(2)(0.01%-0.02%) and high CO_(2)(4.85%-5.15%) levels in PBAT/PLLA 30% film could keep a high level of hardness(9.00 kg/cm^(2))during storage. The contents of soluble protein, soluble sugar and total phenol were 0.35 mg/g, 0.85% and 9.14 mg/g respectively, which could help to delay the decline of nutrients, and inhibit the increase of weight loss rate and malondialdehyde speed. The quality index of A.bernardii packed in PBAT/PLLA 30% film remained a good condition and kept the market value within 15 days. Comprehensive indicators showed that the biodegradable PBAT/PLLA 30% modified atmosphere packaging treatment could maintain the storage quality of A.bernardii and delay the postharvest aging process.

关 键 词：白鳞蘑菇 保鲜 聚己二酸/对苯二甲酸丁二酯 左旋聚乳酸 

分 类 号：TS219[轻工技术与工程—粮食、油脂及植物蛋白工程]