Journal of Food Processing & Technology

Application of edible film and coating in food quality maintenance of grape berries

9^th Euro-Global Summit & Expo on Food & Beverages

July 11-13, 2016 Cologne, Germany

Kyung-Bin Song and Hyun-Ju Yang

Chungnam National University, Republic of Korea

Posters & Accepted Abstracts: J Food Process Technol

Abstract:

Edible films and coatings are used for food packaging to enhance food shelf-life and provide a barrier against water, oxygen, and microbial growth. Among edible film and coating materials, gelatin extracted from fish has been studied intensively. Alaska pollock by-product (APB) consists of head, skin, and bones, and is obtained during the preparation of fillets. In this study, gelatin extracted from APB was used as an edible film source. It was found that the mechanical properties of APB gelatin (APG) films prepared using fructose as a plasticizer was most desirable. In addition, rosewood essential oil or pine needle extract (PE) was incorporated into the APG film at concentrations of 0.5, 1.0, and 1.5% to provide antioxidant and antimicrobial activities. The APG film containing 1.0% PE had the most desirable physical properties (8.5 MPa of tensile strength and 226% elongation at break), as well as superior antioxidant and antimicrobial activities. Subsequently, the APG film and coating were applied to �??Kyoho�?? grape berries for improving the quality during storage. The populations of total aerobic bacteria and yeast and molds in the �??Kyoho�?? grape berries treated with the APG coating containing 1.0% PE were 3.62 and 1.46 log CFU/g lower than the control after 20 days of storage. The grape berries treated with the APG-PE coating had decreased weight loss and change in anthocyanin content compared with the control. These results demonstrate that the APG coating containing 1.0% PE is an effective treatment for maintaining the quality of �??Kyoho�?? grape berries.

Biography :

Email: kbsong@cnu.ac.kr