空调系统真菌类微生物繁殖特性研究

Study on the Propagation Characteristics of Fungal Microorganisms in Air Conditioning System

摘要: 室内空气质量对人们健康影响很大，引起室内空气污染的原因也有很多。当前，空调系统作为潜在的微生物污染源受到人们的普遍关注。本研究对中央空调系统过滤器表面真菌类微生物进行分离鉴定，并通过实验研究不同温热环境下真菌类微生物菌落生长繁殖规律，为通过热湿手段有效解决空气微生物污染问题奠定基础。研究表明，空调系统真菌类微生物优势菌属为青霉属(Penicillium spp)和枝孢属(Cladosporium spp)，菌落数分别为600 cfu/cm²和140 cfu/cm²。无论恒温或变温条件，青霉属生长速率都要快于枝孢属，且菌落直径变化和时间呈现规律性变化关系。通过恒温和变温实验发现，温度变化对青霉属的生长具有明显抑制作用，对枝孢属的生长也有抑制倾向。 Indoor air quality does a great impact on our health and there are many reasons contributing to the pollution of indoor air. At present, people have widely concerned about air conditioning system, which was regarded as potential microbial pollution sources. The study is about separation and identification of fungal microorganisms on the surface of the central air-conditioning system filters, and then researching on the colonies and mycelium grown and reproducing regular of fungal microorganisms in different thermal environment, aimed to lay groundwork of effective air microbial contamination solve by thermal methods. The result shows that the dominant fungi are Penicillium spp and Cladospo- rium spp. No matter constant or variable temperature conditions, the reproduce rate of Penicillium spp is faster than Cladosporium spp and the relationship between colony diameter and time is liner relation. The variable temperature does obvious restrain on Penicillium spp and Cladosporium spp has the same tendency.