Reinforced enzyme expression drives high production of durable lactate-based polyester
Bio-based polyhydroxyalkanoates (PHAs) are considered one of the most promising sustainable alternatives to fossil-derived plastics. Poly[(D-lactate)-co-(R)-3-hydroxybutyrate] (LAHB) is an environmentally biodegradable microbial copolyester, and its lactate (LA) content significantly influences its properties. A new study shows how reinforcing the gene expression of the LA-polymerizing enzyme in a recombinant strain of Cupriavidus necator improves the LA fraction. The LA-enriched LAHB maintained a high molecular weight and displayed a balance of strength and elongation comparable to polyethylene.
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