| Autor: |
Huang X; College of Food Science and Engineering, Yangzhou University, Yangzhou 225127, China., Song J; Institute of Farm Product Processing, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China., Xu F; College of Food Science and Engineering, Yangzhou University, Yangzhou 225127, China., Yun D; College of Food Science and Engineering, Yangzhou University, Yangzhou 225127, China., Li C; College of Food Science and Engineering, Yangzhou University, Yangzhou 225127, China., Liu J; College of Food Science and Engineering, Yangzhou University, Yangzhou 225127, China. |
| Jazyk: |
angličtina |
| Zdroj: |
Molecules (Basel, Switzerland) [Molecules] 2023 Aug 25; Vol. 28 (17). Date of Electronic Publication: 2023 Aug 25. |
| DOI: |
10.3390/molecules28176243 |
| Abstrakt: |
Food packaging films were prepared by using guar gum/polyvinyl alcohol (GP) as the film matrix, 2% Ag nanoparticles (AgNPs) as reinforcing filler and antimicrobial agent, and 1%, 2% and 3% pokeweed betacyanins (PB) as the colorant and antioxidant agent. The structures and color-changing, barrier, mechanical, thermal and antioxidant/antibacterial properties of different films were measured. The results show that the PB were pH-sensitive pigments with pink, purple and yellow colors at pH 3-8, pH 9-11 and pH 12, respectively. PB improved the compatibility of guar gum and polyvinyl alcohol through hydrogen bonds. The films with PB showed a color-changing capacity under ammonia vapor and good color stability in chilled storage. AgNPs and PB elevated the barrier capacity of GP film to light, water vapor and oxygen gas. Meanwhile, AgNPs and PB improved the stiffness, thermal stability and antioxidant/antibacterial activity of GP film. The film with AgNPs and 3% PB showed the highest barrier capacity, stiffness, thermal stability and antioxidant/antimicrobial activity. In shrimp spoilage test, the films with AgNPs and 2% and 3% PB indicated shrimp freshness through film color changes. The results reveal the potential use of the prepared films in active and smart packaging. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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