New biobased polymers exhibiting excellent tensile properties beyond polyolefins
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Updates every hour. Last Updated: 30-Oct-2026 15:16 ET (30-Oct-2026 19:16 GMT/UTC)
The world’s soils are vast reservoirs of organic carbon, vital for both climate change mitigation and sustaining agricultural productivity. A major component of this vital carbon pool is Extracellular Polymeric Substances (EPS), a sticky "slime" secreted by microorganisms. Despite its importance, how EPS transforms and persists within soils, particularly in interaction with minerals, remains poorly understood. A study from Huazhong Agricultural University sheds new light on these intricate processes, revealing that microbial activity, rather than simple surface attachment, drives significant changes in soil organic matter (SOM) composition, with iron (oxyhydr)oxides emerging as key players in carbon stabilization.
This investigation addressed a critical gap in understanding the intricate relationship between microbial life and geological structures beneath our feet. The team's work illustrates the complex pathways through which bacterial EPS contributes to SOM persistence, a process crucial for maintaining soil health and securing long-term carbon storage. EPS primarily comprises polysaccharides, proteins, and nucleic acids, acting as the interface for microbial interactions with their environment and impacting the stability of soil aggregates.
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