食品包装
化学
蝶豆
花青素
海藻酸钠
极限抗拉强度
小虾
灭菌(经济)
食品科学
多酚
钠
材料科学
复合材料
有机化学
抗氧化剂
渔业
生物
医学
替代医学
病理
外汇
货币经济学
经济
外汇市场
作者
Luan Gustavo Santos,Gisele Fernanda Alves da Silva,Vilásia Guimarães Martins
标识
DOI:10.1016/j.ijbiomac.2022.08.120
摘要
The aim of this study was to develop and characterize sodium alginate films loaded with 10-40 % Clitoria ternatea extract (CTE) and apply to monitoring the quality of milk, pork and shrimp. Films loaded with CTE showed high light barrier capacity and improved tensile strength by 3.8 times over control films. The incorporation of CTE in alginate films improved the thermal stability of the materials due to intermolecular interactions and crosslinking of polymeric networks. The addition of 40 % of CTE generated films with antibacterial action against E. coli. The alginate films showed biodegradable characteristics in soil and beach sand in 15 days. The food simulant test revealed that the loaded films show good compatibility with aqueous and acidic foods due to the release of higher levels of polyphenols and anthocyanins. The films showed great colorimetric potential due to their ability to change color at different pH (pink-green), ammonia gas (blue-green) and sterilization process (blue-yellow). When the film loaded with 40 % CTE (F40) was applied to monitor the freshness of milk and meat products (shrimp and pork), its blue color changed to purple and green, respectively. Therefore, the F40 has great potential to be used as a biodegradable indicator of freshness.
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