Raila Algirdas, Lugauskas Albinas, Steponavicius Dainius, Railiene Marija, Steponaviciene Ausra, Zvicevicius Egidijus
Lithuanian University of Agriculture, Department of Heat and Biotechnological Engineering, Studentu 15A, LT-53362 Kaunas, Lithuania.
Ann Agric Environ Med. 2006;13(2):287-94.
In 2004-2005 means were sought to clean grain from microbiological contamination during transportation and storage. For this purpose, grains with a moisture content of 23.2 % of the "Tauras" variety were selected and ventilated daily for 8 hours until grain wetness was reduced to 14.0 %. The effect of ventilation duration and ozone impact was evaluated according to the changes in grain contamination with micromycetes propagules (cfu x g (-1)), and alternation of micromycetes species on the grain surface. At drying grains by active ventilation with an ozone--air mixture, at O (3) concentration of 700 ppb, the drying period was reduced by about 20 %, and mycological contamination depends on initial grain moisture content (w): when w=15.2 %, contamination was reduced by up to 2.2 times, and when w=22.0 %--up to 3 times. At the same time, the composition of micromycetes species on the grain surface changed significantly: in non-ventilated grain there were detected micromycetes of 26 species, and in ventilated grain--of 11 species. Efficient ozone impact was established only when the mound of wet (w>18.0 %) grains was exposed to ozone.
2004 - 2005年期间，人们寻求在运输和储存过程中清除谷物的微生物污染。为此，选取了水分含量为23.2%的“金牛座”品种谷物，每天通风8小时，直至谷物湿度降至14.0%。根据谷物中微真菌繁殖体污染的变化（cfu x g(-1)）以及谷物表面微真菌种类的更替，评估通风持续时间和臭氧影响的效果。在用臭氧 - 空气混合物进行主动通风干燥谷物时，当臭氧（O₃）浓度为700 ppb时，干燥期缩短了约20%，真菌污染取决于谷物的初始水分含量（w）：当w = 15.2%时，污染减少了2.2倍，当w = 22.0%时，减少了3倍。同时，谷物表面微真菌种类的组成发生了显著变化：在未通风的谷物中检测到26种微真菌，在通风的谷物中检测到11种。只有当湿谷物堆（w > 18.0%）暴露于臭氧时，才会产生有效的臭氧影响。
