Application of chitosan-gelatin active film with ethyl pyruvate on quality of fresh-cut pitaya fruit
Active packaging is an emerging and exciting area of food technology that can confer many preservation benefits on a wide range of food products. Besides the normal functions of packaging, active packaging can perform additional functions such as antimicrobial and antioxidant activities. Active packaging could be an effective means of preserving the quality of fresh-cut fruits and vegetables by acting as gas and water vapor barriers and thus help to preserve various critical quality attributes. Furthermore, active agents can be incorporated into films to perform various functions. This study aimed to evaluate the application of chitosan-gelatin film with ethyl pyruvate on the microbial and sensory quality of fresh-cut pitaya fruit through cold storage (4±0.5°C) for 12 days. Results showed that chitosan-gelatin film with ethyl pyruvate effectively prolongs the storage period of fresh-cut pitaya fruit for up to day 12. The active film packaging could effectively delay the decrease of fruit firmness, soluble solids, titratable acidity, vitamin c, and total phenol content of the fresh-cut pitaya fruit during the storage period and keep the higher activity of peroxidase, superoxide dismutase and catalase. The active film packaging also inhibited microorganism growth. These results demonstrated that chitosan-gelatin film with ethyl pyruvate effectively prolongs the quality and extends the shelf life of fresh-cut pitaya fruit.
Wang, B., Bai, X., Li, W., Chang, H., Zhou, J. and Wang, Y. (2021). Application of chitosan-gelatin active film with ethyl pyruvate on quality of fresh-cut pitaya fruit. Acta Hortic. 1319, 139-146
chitosan, gelatin, ethyl pyruvate, quality, fresh-cut, pitaya