Agricultural and Food Engineering Department, Indian Institute of Technology Kharagpur, Kharagpur, India.
Rural Development Center, Indian Institute of Technology Kharagpur, Kharagpur, West Bengal, India.
J Sci Food Agric. 2019 Aug 30;99(11):5008-5018. doi: 10.1002/jsfa.9742. Epub 2019 May 20.
Ozone is a highly oxidative gas that has a long history of safe use as a disinfectant and sanitizer from producers of pharmaceuticals and many other organic compounds. In the current work, disinfestation of stored wheat grain infested with a common insect, Rhyzopertha dominica, was attempted through ozone (O ) treatment as an alternative to chemical fumigants.
The optimized treatment conditions for ozone fumigation of stored wheat grain were 12% (w/w) grain moisture, 2.5 g m ozone concentration and 8 h of treatment. The mortality of R. dominica adults, pupae, larvae and eggs was 97, 100, 99 and 100%, respectively. Moisture and protein content of the ozone-treated wheat was found to be lower as compared to infested wheat. Microstructural changes in the treated samples were clearly visible on scanning electron microscopy images, whereas minimal changes at the molecular level and of rheological parameters were evident based on Fourier transform infrared spectroscopy peak and rheometry data.
Ozone was found to be an effective reagent for disinfestation, aimed at all life stages of R. dominica in stored wheat grain, that leaves no residue behind. Rotational strategies can be applied to obtain increased mortality while maintaining the usability of the grain for different purposes. © 2019 Society of Chemical Industry.
臭氧是一种具有强氧化性的气体，在作为消毒剂和杀菌剂方面有着悠久的安全使用历史，被用于生产药品和许多其他有机化合物。在目前的工作中，尝试使用臭氧（O ）处理来替代化学熏蒸剂对受常见昆虫赤拟谷盗（Rhyzopertha dominica）为害的储粮进行灭虫。
对储粮进行臭氧熏蒸的最佳处理条件为：粮食品质含水量 12%（w/w）、臭氧浓度 2.5 g m 和处理 8 小时。赤拟谷盗成虫、蛹、幼虫和卵的死亡率分别为 97%、100%、99%和 100%。与受虫害的小麦相比，臭氧处理过的小麦的水分和蛋白质含量较低。扫描电子显微镜图像清晰地显示了处理过的样品的微观结构变化，而傅里叶变换红外光谱峰和流变学数据表明，在分子水平和流变学参数方面只有最小的变化。
臭氧被发现是一种有效的灭虫试剂，可用于处理储粮中的赤拟谷盗的所有生活阶段，且不会留下任何残留物。旋转策略可用于在保持谷物不同用途可用性的同时，提高死亡率。 © 2019 化学工业协会。
