洗衣机是给人们日常生活带来极大便利的工具之一。然而,长期使用的洗衣机经常会产生气味和霉菌等问题,这可能会对消费者的健康造成危害。我们对生活在洗衣机内部运作中的微生物的理解存在明显的差距。在这项研究中,样本来自上海的22台洗衣机,中国,包括从洗衣机和生物膜的不同部分洗脱的水。使用荧光PCR定量进行定量定性分析,和微生物群落通过高通量测序(HTS)进行表征。这表明所有样品中的微生物群落主要由细菌组成。HTS结果表明,在洗脱的水样中,细菌主要包括假单胞菌,Enhydrobacter,短杆菌,和不动杆菌。相反,在生物膜样本中,Enhydrobacter和短杆菌是主要的细菌微生物。相关分析结果表明,洗衣机中的微生物菌落与使用年限和用于清洁洗衣机的洗涤剂类型显着相关。由于在结果中可以观察到许多病原微生物,有效的预防措施和未来的研究对于减轻这些健康问题和确保这些家用电器的持续安全使用至关重要。
Washing machines are one of the tools that bring great convenience to people\'s daily lives. However, washing machines that have been used for a long time often develop issues such as odor and mold, which can pose health hazards to consumers. There exists a conspicuous gap in our understanding of the microorganisms that inhabit the inner workings of washing machines. In this study, samples were collected from 22 washing machines in Shanghai,
China, including both water eluted from different parts of washing machines and biofilms. Quantitative qualitative analysis was performed using fluorescence PCR quantification, and microbial communities were characterized by high-throughput sequencing (HTS). This showed that the microbial communities in all samples were predominantly composed of bacteria. HTS results showed that in the eluted water samples, the bacteria mainly included Pseudomonas, Enhydrobacter, Brevibacterium, and Acinetobacter. Conversely, in the biofilm samples, Enhydrobacter and Brevibacterium were the predominant bacterial microorganisms. Correlation analysis results revealed that microbial colonies in washing machines were significantly correlated with years of use and the type of
detergent used to clean the washing machine. As numerous pathogenic microorganisms can be observed in the results, effective preventive measures and future research are essential to mitigate these health problems and ensure the continued safe use of these household appliances.