麝香草酚/聚乳酸抗菌包装对蓝莓保鲜效果的影响  

Effect of Thymol/Polylactic Acid Antibacterial Packaging on Storage Life of Blueberry

作　　者：潘怡丹 郜海燕 陈杭君[1] 穆宏磊[1] 

机构地区：[1]浙江省农业科学院食品科学研究所/农业部果品产后处理重点实验室/浙江省果蔬保鲜与加工技术研究重点实验室/中国轻工业果蔬保鲜与加工重点实验室,浙江杭州310021

出　　处：《核农学报》2018年第4期715-722,共8页Journal of Nuclear Agricultural Sciences

基　　金：国家科技支撑计划课题(2015BAD16B06);国家公益性行业(农业)科研专项(201303073);浙江省公益技术研究农业项目(2014C32109);浙江省重大科技重点农业项目(2014C02024)

摘　　要：为探讨以麝香草酚为抗菌剂制备的抗菌包装对蓝莓品质和生理变化的影响,本研究以灿烂蓝莓为材料,采用麝香草酚/聚乳酸抗菌包装结合低温贮藏处理,通过感官评价,检测好果率、营养品质、抗氧化酶活性等指标,并与普通聚乙烯(PE)包装进行比较,评价抗菌包装的保鲜效果。结果表明,在0℃贮藏条件下,麝香草酚/聚乳酸抗菌包装能显著延缓蓝莓果实贮藏期间的腐败,贮藏36 d仍能保持100%的好果率,而PE包装仅能保持18 d。麝香草酚/聚乳酸抗菌包装能使蓝莓保持较高的可溶性固形物含量和硬度,减少花色苷、总酚、Vc等营养物质的损失,有效抑制超氧化物歧化酶(SOD)、过氧化氢酶(CAT)活性的下降及多酚氧化酶(PPO)活性的上升,但在减少果实失水方面劣于PE包装。由此可知,麝香草酚/聚乳酸抗菌包装在蓝莓果实防腐保鲜中具有较好的应用前景,该研究结果为抗菌包装在果蔬保鲜上的应用提供了一定理论依据。In order to explore the effect of antimicrobial package with thymol on quality and physiological changes of blueberry, the Bright blueberry were packaged by using thymol/polylactic acid as antimicrobial material, and stored in a low temperature environment. Ordinary PE material was chosen as control. The capability of fresh-keeping based on sense, nutritional quality, fresh rate and antioxidant enzymes activity were investigated to evaluate the preservation effect evaluation of the antimicrobial packaging. As a result, antimicrobial package can significantly decreased the decay incidence of blueberry under 0~C and all the fruits were good even after 36 days, while it can be maintained only for 18 d using PE packaging. The antimicrobial package could maintain higher soluble solid content and fruit firmness, reduce the loss of anthocyanins, total phenolics and Vc. At the same time, it could effectively control the decrease of activities of antioxidant enzymes, such as CAT and SOD, and the increase of PPO activity. However, it was inferior to the traditional PE material in inhibiting fruit weight loss. This study demonstrated that thymol/polylactic acid antibacterial package had good application prospect in postharvest storage of blueberry. In addition, the results provided theoretical basis for the application of this package on fresh-keeping.

关 键 词：蓝莓 麝香草酚 聚乳酸 抗菌包装 保鲜 

分 类 号：TS255.3[轻工技术与工程—农产品加工及贮藏工程]