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Poly lactic acid (PLA) based plastics is renewable, bio‐based, and biodegradable. Although present day PLA is composed of mainly L‐LA, an L‐ and D‐ LA copolymer is expected to improve the quality of PLA and expand its use. To increase the number of thermotolerant microbial biocatalysts that produce D‐LA, a derivative of Bacillus subtilis strain 168 that grows at 50°C was metabolically engineered...
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