Analysis and Identification of Airborne Bacteria in the Old Workshops in Luzhou Laojiao Group

The community structure and the distribution of airborne bacteria in three representative old workshops of Luzhou Laojiao Group were studied. There was significant difference in bacteria concentration between inside of workshop and outside of workshop and such difference changed with seasons. Bacteria concentration inside of workshop of Yingtougou was much higher than that outside of workshop. However, bacteria concentration outside of workshop of both Shizitou and Xinjiezi was higher. Whatever inside or outside of the workshop, bacteria concentration was higher in Spring and Summer and was the lowest in Winter. 10 genus and 22 species of airborne bacteria in total were identified, and the dominant bacteria inside or outside of the workshop were Bacillus, Microccus, Staphylococcus and Pseudomonas by sequence. Among all the bacteria, Bacillus had absolutely dominant status with its concentration ratio above 40 %. The concentration ratio of Micrococcus was between 10.7 %～33.7 %.