Effect of stable antimicrobial nano-silver packaging on inhibiting mildew and in storage of rice. (15th January 2017)

• Record Type: Journal Article
• Authors: Li, Li; Zhao, Chanjuan; Zhang, Yadong; Yao, Jianfeng; Yang, Wenjian; Hu, Qiuhui; Wang, Cailin; Cao, Chongjiang
• Is Part Of: Food chemistry. Volume 215(2017)
• Page Start: 477
• Page End: 482
• Publication Date: 2017-01-15
• Subjects: Rice -- Antimicrobial nano-silver packaging -- Storage -- Antimildew; Food -- Analysis -- Periodicals; Food -- Composition -- Periodicals; 664
• DOI: 10.1016/j.foodchem.2016.08.013
• Languages: English
• ISSNs: 0308-8146

Abstract

Highlights: The antimicrobial films were synthesized by blending polyethylene and highly dispersed nanoscale Ag/TiO2 powder. Nano-packing has long-term antibacterial activity because of the strong interaction between Ag and TiO2 . Nano-packing retarded the changes of pasting qualities and texture of rice. Abstract: Antimicrobial nano-silver packaging (ANP) films were synthesized by blending polyethylene and highly dispersed Ag/TiO2 powder for rice storage at 37 °C and 70% relative humidity. ANP films were characterized by X-ray diffraction and silver migration. The antimicrobial activity of the films was assessed on Aspergillus flavus ( A. flavus ) by scanning electron microscope and total plate count, and the storage quality of rice was evaluated by texture analyzer and rapid viscosity analyzer. The results show that ANP had a quite beneficial effect on the antimildew and physicochemical property as compared to the normal PE packaging. During 35 days storage, the migration of silver into rice was not evident. A lower microbial population is observed on ANP that should be attributed to the presence of Ag/TiO2 . Furthermore, rice packed by ANP shows an enhanced quality with regards to texture and pasting properties. Therefore, ANP is a promising packaging material for rice storage.