纳米银抗菌包装对虾仁冷藏过程中品质的影响

The Effect of Nano-silver Antibacterial Package on the Quality of Shrimp Meat during Cold Storage

中文关键词:  纳米银  虾仁  包装  保鲜

英文关键词:nano-silver  shrimp meat  packaging  preservation

中文摘要:

      目的 制备一种可用于水产品冷藏保鲜包装的纳米银抗菌薄膜，并测定其保鲜性能。方法 将纳米银母粒与低密度聚乙烯颗粒混合，并通过吹膜机生产纳米银质量分数为1%，2% 的抗菌活性薄膜，通过测定pH值、TBARS值、TVB-N值、菌落总数等指标来分析纳米银抗菌活性薄膜对虾仁贮藏的效果。结果 随着薄膜中纳米银含量的提高，抗氧化能力和抑菌能力也相应提高。与低密度聚乙烯薄膜相比，该薄膜的抑菌能力和抗脂质氧化能力可提高50%左右，冷藏虾仁的货架期可延长2 d。结论 纳米银抗菌薄膜具有抗菌和抗氧化的作用，并可延长虾仁在冷藏过程中的保质期，有望成为一种新型的虾仁包装材料。

英文摘要:

      The work aims to prepare a kind of nano-silver antibacterial film used in preservation of aquatic products and evaluate its preservation capability. Nano-silver masterbatch and low-density polyethylene particles were mixed and the film blowing machine was used to produce the antibacterial film with nano-silver mass fractions of 1% and 2%. Based on the determination of pH, TBARS, TVB-N, the total number of bacterial colonies and other indicators, the effect of nano-silver active antibacterial film on the preservation capability of shrimp meat was analyzed. The antioxidant capacity and antibacterial activity of nano-silver antibacterial film were improved accordingly with the increase of nano- silver content. Compared with low density polyethylene film, the antibacterial activity and lipid antioxidant capacity of the film could be increased by about 50% and the shelf life of frozen shrimp meat could be extended for about 2 days. Featured by antibacterial activity and antioxidant capability and being able to extend the shelf life of shrimp meat during cold storage, the nano-silver antibacterial film has the potential of becoming a new packaging material of shrimp meat.