期刊
CARBOHYDRATE POLYMERS
卷 241, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.carbpol.2020.116336
关键词
Unidirectionally permeable film (UPF); kappa-Carrageenan; Curcumin; Response surface methodology (RSM); Smart packaging
资金
- National Key R&D Program of China [2019YFD0901705]
In this study, a unidirectionally permeable film (UPF, the inner layer is a hydrophilic film and outer layer is a hydrophobic film) was applied to the preservation of grass carp fillets for the first time. The hydrophilic film was made of kappa-carrageenan, gelatin, and curcumin, which was a smart indicator for aquatic product's freshness detection. The hydrophobic film was made of zein. The optimum dosage of UPF were.-carrageenan (1.5 % w/v), gelatin (1.03 % w/v), curcumin (60 mg/100 mL), zein (10.1 % w/v) and glycerol (0.29 % w/w) according to response surface methodology. The results showed that UPF had better mechanical strength and was more resistant to water than hydrophilic films (p < 0.05). Subsequently, UPF was implemented to pack and store fresh grass carp fillets at 4 degrees C. With the increase of storage time, UPF detected the change of freshness and informed consumers through its color changes from yellow to red.
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