微酸性电解水去除赭曲霉毒素A的研究  

Study on Removal of Ochratoxin A Using Slightly Acidic Electrolyzed Water

作　　者：屠瑞莹 丁长河[2] 殷丽君[1,2] 刘海杰[1] 

机构地区：[1]中国农业大学食品科学与营养工程学院,北京100083 [2]河南工业大学粮油食品学院,郑州450001

出　　处：《中国食品学报》2015年第11期128-134,共7页Journal of Chinese Institute Of Food Science and Technology

基　　金：十二五国家科技支撑计划项目(2012BAD29B04-1-1);国家自然科学基金项目(31201437)

摘　　要：谷物、谷类制品以及植物性食品在贮藏不当时易霉变产生赭曲霉毒素A(OTA)。在不同条件下将微酸性电解水加入OTA溶液中,采用HPLC法检测OTA的含量。结果表明,酸性电解水对OTA有较好的去除作用,且微酸性电解水的去除效果更佳。进一步研究表明,微酸性电解水在p H5.13时去除效果最好,去除率达到96.23%。随着微酸水有效氯浓度(ACC)值的增加,OTA的去除率逐渐增加,当ACC为41.75 mg/L时去除率达到96.4%。去除OTA的机理可能与微酸性电解水中的HCl O有关,OTA与HCl O分子发生取代,使得原有结构发生变化。此外,OTA的去除效果还随着料液比的减少及处理时间的增加而呈现增加趋势。在室温(25℃)条件下选用料液比1∶1、ACC值为40 mg/L的微酸性电解水处理5 min,即可去除OTA 90%以上。The improper storage of cereals, cereal products and plant foods may cause mildew and result in the generation of ochratoxin A（OTA）. Electrolyzed water were added to OTA solution, OTA＇s content change were measured by HPLC. The results showed that the acid electrolyzed water could remove OTA, and slightly acid electrolyzed water were more effective than acid electrolyzed water. The ratio of liquid to solid, ambient temperature and ACC could markedly influence the removal rate of OTA. What＇s more, As the p H of acid electrolyzed water increased, the removal rat of OTA first grew then reduced, and at the of 5.13, acid electrolyzed water showed the best efficiency of elimination of OTA. According to our results, after the acid electrolyzed water which the ratio of liquid to solid was 1 ∶1 and the ACC was 40 mg/L added to OTA for 5 min at room temperature（25 ℃）, the removal rat of OTA is up to 90%.

关 键 词：电解水 赭曲霉毒素 毒素去除 

分 类 号：TS205[轻工技术与工程—食品科学]