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http://dx.doi.org/10.5657/KFAS.2022.0073

Effect of the Packaging Container on the Freshness of Raw Oysters Crassostrea gigas  

Yoon, Na Young (Food safety and Processing Research Division, National Institute of Fisheries Science)
An, Byoung Kyu (Department of Food Science and Technology, Pukyong National University)
In, Jung Jin (Department of Food Science and Technology, Pukyong National University)
Han, Hyeong Gu (Department of Food Science and Technology, Pukyong National University)
Lee, Woo Jin (Department of Food Science and Technology, Pukyong National University)
Seo, Jeong-Hwa (Oyster Hanging Culture Fisheries Cooperatives)
Jeong, Sam Geun (Oyster Hanging Culture Fisheries Cooperatives)
Shim, Kil Bo (Department of Food Science and Technology, Pukyong National University)
Publication Information
Korean Journal of Fisheries and Aquatic Sciences / v.55, no.1, 2022 , pp. 73-77 More about this Journal
Abstract
The shelf life of oysters Crassostrea gigas, in two different types of packaging containers, polyethylene (PE) and polyethylene terephthalate (PET), was determined by evaluating the pH, glycogen and soluble protein content, turbidity, and viable cell count. After 7 days of storage, the pH of the packing water in the PE container decreased to 5.88, while the pH in the PET container decreased to 6.03. In the PE container, the glycogen content of the oysters decreased by 0.85 g/100 g and the soluble protein content and turbidity of the packing seawater increased by 1,927.21 mg/100 g and 3.24 McF, respectively. In the PET container, the glycogen content of the oysters decreased by 0.96 g/100 g and the soluble protein content and turbidity of the packing seawater increased by 1,674.75 mg/100 g and 0.98 McF, respectively. The reaction rate constants (K) were as follows: glycogen content, -0.18 (PE) and -0.10 (PET); soluble protein content, 0.29 (PE) and 0.26 (PET); and turbidity, 0.41 (PE) and 0.06 (PET). These results suggested that PET can be used as a new packaging container material for raw oysters because the quality is maintained and it offers more convenient handling during distribution.
Keywords
Freshness; Oyster; Polyethylene; Polyethyleneterephthalate; Packaging;
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Times Cited By KSCI : 7  (Citation Analysis)
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