Use of the plasma-treated and chitosan/gallic acid-coated polyethylene film for the preservation of tilapia (Orechromis niloticus) fillets

Li-Wah Wong; Xin-Jie Loke; Chao-Kai Chang; Wen-Ching Ko; Chih-Yao Hou; Chang-Wei Hsieh

doi:10.1016/j.foodchem.2020.126989

Use of the plasma-treated and chitosan/gallic acid-coated polyethylene film for the preservation of tilapia (Orechromis niloticus) fillets

Food Chem. 2020 Nov 1:329:126989. doi: 10.1016/j.foodchem.2020.126989. Epub 2020 May 6.

Authors

Li-Wah Wong¹, Xin-Jie Loke¹, Chao-Kai Chang², Wen-Ching Ko³, Chih-Yao Hou⁴, Chang-Wei Hsieh⁵

Affiliations

¹ Department of Food Science and Biotechnology, National Chung Hsing University, 145 Xingda Rd., South Dist., Taichung City 402, Taiwan, Republic of China.
² College of Biotechnology and Bioresources, Da-Yeh University, 168 University Rd., Dacun, Changhua 515, Taiwan, Republic of China.
³ Food Science and Biotechnology, Da-Yeh University, 168 University Rd, Dacun, Changhua 515, Taiwan, Republic of China. Electronic address: wcko@mail.dyu.edu.tw.
⁴ Department of Seafood Science, National Kaohsiung University of Science and Technology, 142, Haizhuan Rd., Nanzi Dist., Kaohsiung City 81157, Taiwan, Republic of China.
⁵ Department of Food Science and Biotechnology, National Chung Hsing University, 145 Xingda Rd., South Dist., Taichung City 402, Taiwan, Republic of China; Department of Medical Research, China Medical University Hospital, Taichung City 404, Taiwan, Republic of China. Electronic address: welson@nchu.edu.tw.

PMID: 32502742
DOI: 10.1016/j.foodchem.2020.126989

Abstract

In this study, a polyethylene (PE) film coated with chitosan (CS) and gallic acid (GA) was prepared using plasma modification technology and applied for the preservation of tilapia fillets. Based on the analysis of surface morphology and surface functional groups, it was shown that plasma modification allowed CS and GA coating on PE. And GACS/PE demonstrated better antioxidant ability than CS/PE and GA/PE individually. The results of the tilapia freshness test showed that the total plate count showed that GACS/PE can inhibit 1.52 log CFU/g and delay the production of volatile basic nitrogen below 15 mg/100 g after 14 d of storage. Moreover, GA/PE (0.26 mg MDA/kg) and GACS/PE (0.24 mg MDA/kg) showed better thiobarbituric acid inhibitiry effect than control (0.30 mg MDA/kg) on day 14. These results indicate that these packaging films are efficient in extending the shelf life of tilapia fillets.

Keywords: Antimicrobial active packaging; Chitosan; Gallic acid; Plasma treatment; Tilapia fillets preservation.

MeSH terms

Animals
Chitosan / chemistry*
Food Packaging / methods*
Food Preservation / methods*
Gallic Acid / chemistry*
Polyethylene / chemistry*
Tilapia*

Substances

Gallic Acid
Polyethylene
Chitosan