We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
Responses of gut microbial community and metabolic function to disposable face mask of Zophobas atratus larvae
Summary
Zophobas atratus (superworm) larvae degraded disposable face masks at a rate of 60 mg/day per 50 larvae through a gut microbiome-dependent process, with Hafnia and Corynebacterium identified as key degrading genera and Stenotrophomonas sp. strain M212 isolated as a functional degrader. This finding identifies a biological pathway for polypropylene mask degradation, advancing the search for microbial solutions to the surge in pandemic-era plastic waste.
With the prevalence of epidemics, disposable face masks have been used in large quantities and has caused global environmental pollution concern. The gut microbiome of Zophobas atratus larvae showed great potential for plastic degradation. In a preliminary study, the larval gut microbiome could degrade masks, which has not been previously reported. This study validated the ability of the gut microbiome to degrade masks. Functional microbiomes and metabolic pathways associated with the degradation of masks were also analyzed. Our findings confirmed that the larvae have high masks-degrading ability with a consumption of 60 ± 0.04 mg/d (dry mass by per 50 larvae), which is gut microbiome-dependent. At the genus level, Hafnia and Corynebaterium were highly abundant and contributed to masks degradation. The degrading metabolites were then identified, of which 46 were significantly upregulated. Steroid hormone biosynthesis and the cytochrome P450 pathway may be linked to DFM (PP) oxidation and degradation. Finally, Stenotrophomonas sp. strain M212 with a masks-degrading ability was screened from these functional microorganisms, further establishing the role of the gut microbiome.