酸性电解水与次氯酸钠清洗鲜切菠菜节水能力比较
Comparison of the water- saving ability of acid electrolyzed water and sodium hypochlorite on fresh- cut spinach
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摘要: 分别采用酸性电解水与次氯酸钠清洗鲜切菠菜,比较其在显著抑菌前提下的节水能力。在重复使用清洗水及不同菜水比的情况下,研究对鲜切菠菜的抑菌效果的影响,并揭示不同清洗剂物化指标的变化。结果表明:与次氯酸钠相比,强酸电解水在低菜水比的条件下能显著减少鲜切菠菜的菌落总数;在同样的清洗次数条件下,酸性电解水抑菌效果更好;清洗水在重复使用过程中,强酸电解水物化指标的变化较小且能保持水中菌落数量在低水平,可循环使用的潜力更高;重复使用清洗剂,p H变化不大,ORP(氧化还原电位)以及有效氯大幅下降,综合考虑,清洗过程中ORP的保持至关重要。Abstract: The aim of the article was to compare the water- saving ability of acid electrolyzed water and sodium hypochlorite during washing fresh- cut spinach. The bacteriostatic effect, physical and chemical indicators of cleaning agent were studied after washing fresh- cut spinach under the conditions of using cleaning agent several times and different washing ratio. The results showed that acid electrolyzed water significantly reduced the total number of bacteria on fresh cut spinach in low washing ratio when compared with sodium hypochlorite. Acid electrolyzed water exhibited better bacteriostatic effect than sodium hypochlorite under the condition of the same washing time.Physical and chemical indicators of acid electrolyzed water changed and the total number of bacteria less than other cleaning agent which indicating that acid electrolyzed water had more potential for recycling use.p H change was small, ORP and active chlorine decreased significantly after repeating use of cleaning agent.Keeping high ORP was very important factor to during washing processing.