ROSELLE (HIBISCUS SABDARIFFA) ANTHOCYANIN USE IN MONITORING MEAT FRESHNESS

• Main Author: PSNZ
• Format: Article
• Language: English
• Published: UNIVERSITI MALAYSIA TERENGGANU 2024
• Subjects: PVDF film; Hydrophobic property; Bi-layer indicator; WVP; Freshness
• Online Access: http://umt-ir.umt.edu.my:8080/handle/123456789/21143

This study designed a new type indicator with hydrophobic Polyvinylidene Fluoride (PVDF) film as a moisture prevent-layer. And the sensor layer was provided based on polyvinyl alcohol/Sodium alginate (PS) and Roselle anthocyanins (RAs). Physical properties, microstructure, and color stability of the bi-layer indicator have been investigated. The Water contact angle (WCA) of PS/RAs/ PVDF film (PSRF) was 108.85◦, which can be considered as an excellent hydrophobic surface. The lowest Water Vapor Permeability (WVP) value of PSRF exhibited a good barrier property for moisture. Therefore, PSRF film was used to monitor the griskin freshness. The Total volatile basic nitrogen (TVB-N) level was increased to 18.02 mg/100 g at 72 h, and the color of the indicator presented visible color changes. The acquired results revealed a good correlation between TVB-N, pH and color change of the indicator. The research indicated that PSRF indicator has increasing potential application on food intelligent packaging.