Lagatar24 Desk
New Delhi: A recent study has uncovered that microwave ovens are home to a diverse array of highly adapted microbes. The research, conducted by Daniel Torrent and his team at Darwin Bioprospecting Excellence SL in Paterna, Spain, highlights the unique microbial communities found in these commonly used kitchen appliances.
The study involved sampling from 30 microwave ovens across various settings: single-household kitchens, shared domestic spaces like corporate cafeterias, and molecular biology laboratories. The aim was to understand how microbial populations adapt to different environments and usage patterns.
Findings revealed that domestic microwaves harbor a microbiome similar to that of kitchen surfaces, while laboratory microwaves contain bacteria more resistant to radiation. The research identified 747 different genera across 25 bacterial phyla, with the most common being Firmicutes, Actinobacteria, and Proteobacteria. The highest microbial diversity was observed in laboratory microwaves, while single-household units had the least.
Notable bacterial genera found exclusively in domestic microwaves include Acinetobacter, Bhargavaea, Brevibacterium, and Rhizobium. Shared domestic microwaves had unique strains such as Arthrobacter, Enterobacter, Janibacter, and Planococcus. Laboratory microwaves contained Nonomuraea, Delftia, Micrococcus, Deinococcus, and a genus of Cyanobacteria.
The study suggests that the thermal and electromagnetic conditions inside microwaves favor the survival of robust microbes. However, Torrent reassures that while some bacteria found in domestic microwaves, like Klebsiella and Enterococcus, may pose health risks, they do not present a unique danger compared to other kitchen surfaces.
To maintain hygiene, the researchers recommend regular disinfection of microwaves using a diluted bleach solution or commercial disinfectant sprays. Additionally, wiping down interior surfaces with a damp cloth after each use and promptly cleaning up spills can help prevent bacterial growth.
With these findings, both the general public and laboratory personnel are advised to implement these cleaning practices to ensure their microwaves remain sanitary.
