Plasma activated water (PAW) - gelatin coatings: moderate oxidation of gelatin and controlled release of PAW for preservation of snakehead (Channa argus) fillets
文献类型： 外文期刊
作者： Gao, Ruichang 1 ; Zhang, Xiaoli 1 ; Cao, Xiyue 1 ; Shi, Tong 1 ; Wang, Xin 1 ; Li, Mengzhe 1 ; Lu, Chenya 1 ; Liu, Yuanxiu 1 ; Tian, Ying 1 ; Jin, Wengang 2 ; Wang, Lan 4 ; Yuan, Li 1 ;
作者机构： 1.Jiangsu Univ, Sch Food & Biol Engn, 301 Xuefu Rd, Zhenjiang 212013, Jiangsu, Peoples R China
2.Shaanxi Univ Technol, Sch Biol Sci & Engn, Bioresources Key Lab Shaanxi Prov, Hanzhong 723001, Peoples R China
3.Quanzhou Marine Biotechnol Ind Res Inst, Quanzhou 362700, Peoples R China
4.Hubei Acad Agr Sci, Inst Agroprod Proc & Nucl Agr Technol, Key Lab Agr Prod Cold Chain Logist, Minist Agr & Rural Affairs, Wuhan 430064, Peoples R China
关键词： Plasma-activated water; Gelatin; Autolysis; Tissue structures; H2O2
期刊名称：LWT-FOOD SCIENCE AND TECHNOLOGY （ 影响因子：6.6； 五年影响因子：6.9 ）
ISSN： 0023-6438
年卷期： 2025 年 228 卷
页码：
收录情况： SCI
摘要： Plasma-activated water (PAW) was utilized to dissolve gelatin for the preparation of antibacterial coatings aimed to preserve snakeheads (Channa argus) fillets at 4 degrees C. PAW significantly enhanced the transparency and viscosity of the gelatin solutions. Specifically, PAW treated for 10 min (PAW(10)) induced the densest network structure of gelatins with decreased alpha-helix and increased beta-sheet. The antibacterial activity against Escherichia coli and Pseudomonas aeruginosa was enhanced dependently on the preparation time of PAW (P < 0.05). Furthermore, PAW-gelatin coatings decelerated the release of H2O2, which favored to reduce the total viable count (TVC) and total volatile base nitrogen (TVB-N) during the storage of fillets (P < 0.05) and extended the shelf life from 6 days to 9 days. Essentially, G-PAW(10) reduced the crude protease activity of fillets from 102.25 nkat/mL to 7.16 nkat/mL (P < 0.05), suggesting the suppression in protein degradation and autolysis. Consequently, the muscle fibres of FG-PAW(10) remained intact, smooth and tightly packed, with the shear force increasing from 230.36 g in the control to 839.67 g and the poriness of tissue structures decreasing from 44.97 % to 31.58 % (P < 0.05), indicating effective structural preservation.
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