Sawangrat Choncharoen, Phimolsiripol Yuthana, Leksakul Komgrit, Thanapornpoonpong Sa-Nguansak, Sojithamporn Phanumas, Lavilla Maria, Castagnini Juan Manuel, Barba Francisco J, Boonyawan Dheerawan
Department of Industrial Engineering, Faculty of Engineering, Chiang Mai University, Chiang Mai 50200, Thailand.
Agriculture and Bio Plasma Technology Center (ABPlas), Thai-Korean Research Collaboration Center (TKRCC), Science and Technology Park, Chiang Mai University, Chiang Mai 50200, Thailand.
Foods. 2022 Sep 15;11(18):2859. doi: 10.3390/foods11182859.
Plasma activated water (PAW) generated from pinhole plasma jet using gas mixtures of argon (Ar) and 2% oxygen (O2) was evaluated for pesticide degradation and microorganism decontamination (i.e., Escherichia coli and Colletotrichum gloeosporioides) in chili (Capsicum annuum L.). A flow rate of 10 L/min produced the highest concentration of hydrogen peroxide (H2O2) at 369 mg/L. Results showed that PAW treatment for 30 min and 60 min effectively degrades carbendazim and chlorpyrifos by about 57% and 54% in solution, respectively. In chili, carbendazim and chlorpyrifos were also decreased, to a major extent, by 80% and 65% after PAW treatment for 30 min and 60 min, respectively. E. coli populations were reduced by 1.18 Log CFU/mL and 2.8 Log CFU/g with PAW treatment for 60 min in suspension and chili, respectively. Moreover, 100% of inhibition of fungal spore germination was achieved with PAW treatment. Additionally, PAW treatment demonstrated significantly higher efficiency (p < 0.05) in controlling Anthracnose in chili by about 83% compared to other treatments.
对使用氩气(Ar)和2%氧气(O₂)的气体混合物通过针孔等离子体射流产生的等离子体活化水(PAW)进行了评估,以研究其对辣椒(辣椒属)中农药降解和微生物去污(即大肠杆菌和胶孢炭疽菌)的效果。流速为10 L/min时产生的过氧化氢(H₂O₂)浓度最高,为369 mg/L。结果表明,PAW处理30分钟和60分钟可分别有效降解溶液中的多菌灵和毒死蜱约57%和54%。在辣椒中,PAW处理30分钟和60分钟后,多菌灵和毒死蜱也分别大幅下降了80%和65%。PAW处理60分钟后,悬浮液和辣椒中的大肠杆菌数量分别减少了1.18 Log CFU/mL和2.8 Log CFU/g。此外,PAW处理可实现对真菌孢子萌发100%的抑制。此外,与其他处理相比,PAW处理在控制辣椒炭疽病方面表现出显著更高的效率(p < 0.05),约为83%。