Photosynthetic microorganisms achieve long-lasting and renewable chemical production
Photosynthetic microorganisms can use light energy to convert carbon dioxide into useful compounds under mild, environmentally compatible conditions. However, many current photosynthetic production systems rely on cells growing freely in large volumes of liquid. This creates a substantial demand for water and requires extensive mixing to keep the cells evenly distributed and exposed to light,…
Engineered cyanobacteria encapsulated in nanocellulose films have successfully produced ethylene for over four months, outperforming conventional suspension cultures, according to a study published in Trends in Biotechnology. The nanocellulose scaffold provides a supportive environment for the living cells, maintaining hydration, supporting cell fitness, and facilitating light penetration.
This biohybrid approach combines the natural abilities of the engineered photosynthetic cells with the controllable properties of the surrounding material, restricting cell division and excessive biomass accumulation. The films remain productive for extended periods while exposed to the reactor headspace, releasing and collecting ethylene.
The nanocellulose matrices were found to be biodegradable after the production phase, supporting the development of biodegradable and potentially recyclable materials for photosynthetic production. The study highlights the potential for long-term operation and more efficient light use in photosynthetic bioproduction, paving the way for the development of renewable chemicals and fuels.
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