Ochratoxin A (OTA) occurrence in grapes is caused by black Aspergilli (Aspergillus carbonarius followed by A. niger) vineyards contamination. It depends on climatic conditions, geographical regions, damage by insects, and grape varieties. Good agricultural practices, pesticides, and fungicides seem adequate to manage the problem during low OTA risk vintages, but the development of new strategies is always encouraged, especially when an extremely favourable condition occurs in the vineyard.

Electrolysed oxidising water (EOW) has become an interesting alternative to chemicals in agriculture, mainly during the post-harvest phase. This study tested the fungicidal efficacy of EOW generated by potassium chloride, in vitro, on black Aspergilli conidia, and detached grape berries infected by A. carbonarius. Then, during field trials on Primitivo cv vineyard treated with EOW, A. carbonarius contamination, and OTA levels were compared with Switch® fungicide treatment (0.8 g/l). Black Aspergilli conidia were killed on plate assay after 2 min of treatment by EOW containing >0.4 g/l of active chlorine.

EOW (0.6 g/l active chlorine) treatment reduced the rate of A. carbonarius infections in vitro of about 87–92% on detached berries and, more than half in the field trials, although Switch® showed better performance. A significant reduction in the OTA concentration was observed for the EOW and Switch® treatments in vitro (92% and 96%, respectively), while in the field trials, although the average decrease in OTA was recorded in the treated grapes, it was not statistically significant.

These results highlighted that EOW could be considered effective, as a substitute for fungicides, to reduce the contamination of A. carbonarius and OTA on grapes.

葡萄中的ch曲霉毒素A（OTA）产生是由于黑曲霉（Carbon Asus）和黑曲霉（A. niger）葡萄园污染引起的。它取决于气候条件，地理区域，昆虫的危害和葡萄品种。在低OTA风险年份中，良好的农业规范，农药和杀真菌剂似乎足以解决该问题，但始终鼓励开发新策略，尤其是在葡萄园中出现极为有利的状况时。

电解氧化水（EOW）已成为农业化学中一种有趣的替代方法，主要是在收获后阶段。这项研究在体外测试了氯化钾产生的EOW对黑曲霉分生孢子和被A. carbonarius感染的葡萄果实的杀菌作用。然后，在用EOW处理的Primitivo简历葡萄园的田间试验中，将碳烟曲霉污染和OTA水平与杀菌剂处理（0.8g / L）进行了比较。用含有> 0.4g / L活性氯的EOW处理2分钟后，黑曲霉的分生孢子被杀死。

EOW（0.6g / L活性氯）处理降低了体外碳假单胞菌的感染率，约为87-92％，在现场试验中减少了一半以上，尽管Switch®显示出更好的性能。体外EOW和Switch®处理的OTA浓度显着降低（分别为92％和96％），而在田间试验中，尽管记录了处理过的葡萄中OTA的平均降低，但并未具有统计意义。

这些结果强调了EOW可以被认为是有效的杀真菌剂替代品，可以减少葡萄中的A. carbonarius和OTA污染。