Engineered microbes turn plant and plastic oils into plastics
Becker S, Benfeldt FV, Jochmann AS, Ravagnan G, Guo Z
Biotechnology
The plant oils and waxy biomass that normally get composted or burned could become feedstock for the same bio-based plastics and lubricants researchers are trying to replace petroleum with.
Some microbes have a knack for grabbing long, oily carbon chains called alkanes and oxidizing both ends, turning them into diols and diacids, building blocks for plastics, nylon, and lubricants. Scientists are now engineering those microbial enzymes to work faster and more precisely, so the alkanes feeding this process can come from leftover plastic waste or renewable plant sources instead of petroleum. It's a step toward making everyday plastic ingredients in a greener way.
Key Findings
Diterminal (α,ω) oxidation of alkanes into diols and diacids relies on distinct enzymatic systems depending on the chain length of the starting alkane.
Enzyme engineering, metabolic engineering, and process optimization are the three main strategies being used to boost bioconversion efficiency.
Alkane feedstocks for these bioprocesses can be sourced from petroleum, chemically recycled plastics, or plant-based renewable resources.
chevron_right Technical Summary
This review rounds up how bacteria and fungi, often with engineered help, oxidize long carbon chains (alkanes) into diols and diacids, the raw materials behind nylon, lubricants, and biodegradable plastics, using feedstocks that can come from petroleum, chemically recycled plastic, or plant-based sources.
Abstract Preview
Original paper
Bioproduction of α,ω-oxyfunctionalised alkanes.
The oxidation of n-alkanes into higher-value products, such as diols and diacids, is facilitated by various wild-type and engineered microorganisms. Depending on the substrate chain length, several...
open_in_new Read full abstractAbstract copyright held by the original publisher.
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