Gliding arc discharge non-thermal plasma for retardation of mango anthracnose

• Main Authors: Khanh Thi Kim Phan, Huan Tai Phan, Charles S. Brennan, Joe M. Regenstein, Kittisak Jantanasakulwong, Dheerawan Boonyawan, Yuthana Phimolsiripol
• Format: Journal
• Published: 2019
• Subjects: Agricultural and Biological Sciences
• Online Access: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85061304010&origin=inward; http://cmuir.cmu.ac.th/jspui/handle/6653943832/63520
• Institution: Chiang Mai University

© 2019 Elsevier Ltd The effects of non-thermal plasma (NTP) using a gliding arc (GA) discharge was studied with harvested Nam Dok Mai mangoes to determine the rate of retardation of anthracnose disease (Colletotrichum gloeosporioides). Different fluxes of argon (Ar) gas (3–5 L/min) and treatment times (5–7 min) with NTP delayed mycelium growth as well as decreasing fungal spore survival and anthracnose severity. A GA discharge at 5 L/min Ar for 7 min had a significantly higher (p ≤ 0.05) inhibition of C. gloeosporioides mold growth on potato dextrose agar and mango fruit at 30 °C together with reducing the number of fungi spores in suspension. Hydroxyl radicals (OH ● ) together with hydrogen peroxide (H 2 O 2 ) may be responsible for the suppression of the postharvest anthracnose disease with mangoes.