食品与机械2025，Vol.41Issue(3)：26-32,7.DOI:10.13652/j.spjx.1003.5788.2024.80726
手性纳米金改性TiO2对番茄灰霉菌的光催化抑菌效果
Photocatalytic bactericidal effect of chiral gold-modified TiO2 nanoparticles on Botrytis cinerea in tomatoes
摘要
Abstract
[Objective]To develop an effective method for inhibiting Botrytis cinerea in tomatoes.[Methods]The effect of the addition amount of nanomaterial and light exposure time in chiral gold-modified TiO2(DAT)composite materials on the inhibition of B.cinerea in tomatoes was studied through colony diameter and antibacterial rate.The mechanism of action of DAT on B.cinerea was explored by analyzing mycelial biomass,nucleic acid and protein leakage,and fungal cell structure.[Results]When the chiral nano-gold addition was 80 μL,the DAT concentration was 5 mg/mL,and the natural light exposure time was 24 hours,the highest inhibition rate of DAT against B.cinerea was 53.64%.DAT nanomaterials generated free radicals under light exposure,disrupting the cell membrane,causing extensive leakage of fungal nucleic acids and proteins,and inhibiting the growth of B.cinerea mycelia.The surfaces of B.cinerea mycelia treated with DAT were rough,wrinkled,and damaged,effectively destroying the mycelial structure of B.cinerea.[Conclusion]DAT can effectively destroy the cell membrane and mycelial structure of B.cinerea in tomatoes,inhibiting the growth and reproduction of B.cinerea.关键词
手性/金纳米/二氧化钛/灰霉菌/抑菌Key words
chiral/gold nanoparticles/titanium dioxide/Botrytis cinerea/antibacterial引用本文复制引用
邹洁,宋锦柱,郭星磊,李昕炫,倪永标,严文静..手性纳米金改性TiO2对番茄灰霉菌的光催化抑菌效果[J].食品与机械,2025,41(3):26-32,7.基金项目
江苏省市场监督管理局科技计划项目(编号:KJ2024007) （编号:KJ2024007）
