Inhibition of Fusarium graminearum growth and deoxynivalenol accumulation in barley malt by protonated g-C3N4/oxygen-doped g-C3N4 homojunction. (December 2022)

• Record Type: Journal Article
• Authors: Chen, Xingguang; Chu, Beibei; Gu, Qianhui; Li, Wenzhe; Lin, Rui; Chu, Jiyang; Peng, Zhengcong; Lu, Jian; Wu, Dianhui
• Is Part Of: Food research international. Volume 162(2022)Part A
• Publication Date: 2022-12
• Subjects: Fusarium graminearum -- Deoxynivalenol -- Malt -- Photocatalysis -- g-C3N4; Food -- Analysis -- Periodicals; Food industry and trade -- Periodicals; Food industry and trade -- Canada -- Periodicals; Food Technology -- Periodicals; Food -- Periodicals; Food-Processing Industry -- Periodicals; Aliments -- Industrie et commerce -- Périodiques; Aliments -- Industrie et commerce -- Canada -- Périodiques; Aliments -- Recherche -- Périodiques; Food industry and trade; Canada; Periodicals; Electronic journals; 664.005
• DOI: 10.1016/j.foodres.2022.112025
• Languages: English
• ISSNs: 0963-9969

Abstract

Graphical abstract: Highlights: g-C3 N4 homojunction was firstly used to inhibit the growth of F. graminearum. CNH/OCN composite can kill F. graminearum spores by using O2 – The inhibition rate of ergosterol in malt reached 73.33%. The accumulation of DON in malt decreased by 67.25%. Abstract: Barley malt, the main raw material for beer production, is at risk of Fusarium graminearum ( F. graminearum ) infection, leading to the possible production of large amounts of deoxynivalenol (DON) in malt. DON in malt can migrate into the final beer product, posing a food safety risk to consumers. In our work, a protonated g-C3 N4 /oxygen-doped g-C3 N4 (CNH/OCN) composite was prepared and used for the inhibition of F. graminearum growth and DON accumulation in barley malt under visible light irradiation. The results showed that the inhibition rate of F. graminearum reached 100 % after 2.5 h of visible light irradiation, and the inhibition effect was still stable after 3 rounds of reuse. The possible pathway of inhibiting F. graminearum spores was that the photogenerated carriers in the CNH/OCN composite transferred in the form of a type II homojunction under visible light and stimulated O2 in the catalytic system to produce a large amount of O2 – to kill spores. Compared with the untreated malt, the photocatalytic inhibition rates of the CNH/OCN composite material for ergosterol and DON in malt reached 73.33 % and 67.25 %, respectively. Although photocatalysis had a certain effect on the physicochemical indices of malt, the malt after photocatalysis still met the first-grade standard of Chinese industry standard QB/T 1686–2008.