微酸性电解水凝胶对天麻鲜切片贮藏品质的影响

目的 为研究微酸性电解水(slightly acidic electrolyzed water，SAEW)凝胶对天麻鲜切片贮藏品质的影响。方法 以不同有效氯浓度、凝胶浓度和处理时间为自变量，样品表面菌落存活数量级为响应值，利用响应面优化法得出最佳组合并对天麻鲜切片进行(4±1) °C贮藏实验，分别在贮藏0、2、4、6、8、10 d内测定天麻鲜切片的表面菌落总数、色差、天麻多糖、失重率。以无菌水处理做对照。分析SAEW凝胶对天麻鲜切片贮藏品质的影响。结果 天麻鲜切片在0~10 d的贮藏过程中，处理组菌落总数为2.06 Log (CFU/mL)、色差值变化为5.89、质量损失率为1.24%、天麻多糖含量减少2.06%。对照组菌落总数为3.72 Log (CFU/mL)、色差值变化为10.01、质量损失率为3.24%、天麻多糖含量减少5.45%。结论 SAEW凝胶具有较好的杀菌、保鲜效果。相关结果有助于天麻鲜切片保鲜技术理论的完善。

Effects of slightly acidic electrolyzed water gel on the storage quality of fresh slices of Gastrodia elata

Objective To study the effect of slightly acidic electrolyzed water (SAEW) gel on the storage quality of fresh Gastrodia elata slices. Methods Taking SAEW with different available chlorine concentrations, gel concentration and processing time as independent variables, and the survival order of colony on the sample surface as the response value, the response surface optimization method was used to obtain the best combination and the fresh section of Gastrodia elata was performed at (4±1) °C In the storage experiment, the total number of colonies on the surface of fresh Gastrodia elata slices, color difference, polysaccharides and weight loss rate were determined within 0, 2, 4, 6, 8, and 10 days of storage. Treat with sterile water as a blank control. Analyze the effect of SAEW gel on the storage quality of fresh Gastrodia elata slices. Results During the storage of fresh Gastrodia elata slices from 0 to 10 days, the total number of colonies in the treatment group was 2.06 Log (CFU/mL), the color difference value was 5.89, the mass loss rate was 1.24%, and the Gastrodia elata polysaccharide content decreased by 2.06%. The total number of colonies in the control group was 3.72 Log (CFU/mL), the color difference value was 10.01, the mass loss rate was 3.24%, and the polysaccharide content of Gastrodia elata decreased by 5.45%. Conclusion SAEW gel has good sterilization and fresh-keeping effects. The relevant results are helpful to perfect the fresh-keeping technology theory of Gastrodia elata slices.