Key Laboratory of Animal Health and Safety in Nanchang, Jiangxi Agricultural University, Jiangxi, China.
J Sci Food Agric. 2021 Apr;101(6):2355-2361. doi: 10.1002/jsfa.10858. Epub 2020 Oct 24.
Slightly acidic electrolyzed water (SAEW) has been shown to offer a promising alternative for the inactivation of bacteria on egg surfaces, but the cuticle of the egg is damaged during this disinfection process. However, if SAEW disinfection is followed by chitosan (CS) coating treatment, this will construct a new membrane and prevent the loss of moisture and carbon dioxide through the damaged cuticle. Hence, the objective of this study was to investigate the efficacy of SAEW disinfection followed by CS coating treatment for improving the internal quality of eggs during 6 weeks of storage at 25 °C.
Scanning electron microscopy revealed that SAEW-treated eggs had deeper and wider cracks than control eggs stored between 0 and 21 days. Moreover, the depth and width of the cracks in the uncoated eggs increased as storage time increased. However, the CS coating method was successfully used on SAEW-disinfected eggs to construct a barrier against the negative effects of shell damage. After 6 weeks of storage at 25 °C, the yolk index, albumen pH, Haugh unit value and weight loss value of the SAEW + CS group were 0.31%, 9.01%, 63.72% and 5.35%, respectively.
A combination of SAEW and CS was more effective at maintaining internal egg quality than SAEW or CS treatments alone during storage. © 2020 Society of Chemical Industry.
弱酸性电解水（SAEW）已被证明是一种很有前途的替代方法，可以有效灭活鸡蛋表面的细菌，但在消毒过程中会破坏蛋壳的角质层。然而，如果在 SAEW 消毒后进行壳聚糖（CS）涂层处理，将构建一个新的膜，防止通过受损的角质层损失水分和二氧化碳。因此，本研究的目的是研究 SAEW 消毒后用 CS 涂层处理来改善在 25°C 下储存 6 周期间鸡蛋内部品质的效果。
扫描电子显微镜显示，与对照组鸡蛋在 0 至 21 天之间的储存相比，SAEW 处理的鸡蛋具有更深和更宽的裂缝。此外，未涂层鸡蛋的裂缝深度和宽度随着储存时间的增加而增加。然而，CS 涂层方法成功地应用于 SAEW 消毒的鸡蛋上，以构建一种防止蛋壳损坏负面影响的屏障。在 25°C 下储存 6 周后，SAEW+CS 组的蛋黄指数、蛋清 pH 值、哈夫单位值和失重值分别为 0.31%、9.01%、63.72%和 5.35%。
与单独使用 SAEW 或 CS 相比，SAEW 和 CS 的组合在储存期间更有效地保持了鸡蛋内部品质。© 2020 英国化学学会。
