Among different insects, the American cockroach (Periplaneta americana) has been bred in industrial scale successfully as a potential resource of protein, lipid, and antibacterial peptide. However, the application of its chitosan has not been studied widely, which has hindered the sufficient utilization of P. americana. In this paper, the chitosan from P. americana was separated, characterized, and processed into film (PaCSF) to examine its potential of being applied in food packaging. As the results of different characterizations showed, PaCSF was similar to shrimp chitosan film (SCSF). However, concerning the performances relating to food packaging, the two chitosan films were different. PaCSF contained more water (42.82%) than SCSF did, resulting in its larger thickness (0.08 mm). PaCSF could resist UV light more effectively than SCSF did. Concerning antioxidant activity, the DPPH radical scavenging ability of PaCSF increased linearly with time passing, reaching 72.46% after 8 h, which was better than that of SCSF. The antibacterial activity assay exhibited that PaCSF resisted the growth of Serratia marcescens and Escherichia coli more effectively than SCSF did. The results implied that P. americana chitosan could be a potential raw material for food packaging, providing a new way to develop P. americana.

中文翻译：

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美洲山plane抗氧化抗菌壳聚糖膜的制备

在不同的昆虫中，美洲蟑螂（Periplaneta americana）已作为蛋白质，脂质和抗菌肽的潜在资源在工业规模上成功繁殖。然而，其壳聚糖的应用尚未得到广泛的研究，这阻碍了美洲假单胞菌的充分利用。在本文中，美洲P.的壳聚糖将其分离，表征并加工成薄膜（PaCSF），以检查其在食品包装中的应用潜力。如不同表征的结果所示，PaCSF与虾壳聚糖膜（SCSF）相似。但是，关于食品包装的性能，两种壳聚糖膜是不同的。PaCSF比SCSF包含更多的水（42.82％），导致其更大的厚度（0.08mm）。PaCSF比SCSF更有效地抵抗紫外线。关于抗氧化活性，PaCSF的DPPH自由基清除能力随时间流逝线性增加，8 h后达到72.46％，优于SCSF。抗菌活性测定表明PaCSF可以抵抗粘质沙雷氏菌和大肠杆菌的生长比SCSF更有效。研究结果表明，美洲雪松壳聚糖可以作为食品包装的潜在原料，为开发美洲雪松提供了新的途径。