자동차 HVAC 시스템(Heating, Ventilation and Air Conditioning system)의 악취 연관 세균 군집 특성

초록

This study investigated the odor-associated bacterial community in automobile HVAC systems. Through ametagenome analysis, it was found that; Massilia (42.426%), Sphingomonas (28.200%), Rhodococcus (10.780%),and Methylobacterium (5.756%) were abundant in the HVAC systems. Massilia can cause the biodegradation ofpolycyclic aromatic hydrocarbons (PAHs) producing odor in automobiles. Sphingomonas produces volatilehalogenated compounds or degrades organic pollutants. Rhodococcus is reported to produce sulfur compoundswhich give off an odor similar to rotting eggs and cabbages. Methylobacterium is one of the most representativebacteria that causes odor in automobile HVAC systems. The evaporator is considered as the appropriate habitatfor microorganisms in automobiles because of its high humidity and organic adsorption. Massilia, Sphingomonas,Rhodococcus, Methylobacterium, Bacillus, Staphylococcus, Arthrobacter, Micrococcus, and Pseudomonas, listedin order from most to least present, were isolated as abundant bacteria in the evaporator of the HVAC systems.

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