Abstract
Methylobacterium sp. KCTC 0048 isolated from soil, could synthesize a variety of copolyesters when secondary carbon substrates were added to nitrogen-limited cultures containing methanol as a major carbon and energy source. The copolyester of 3-hydroxy-butyrate and 3-hydroxyvalerate, P(3HB-co-3HV) accumulated when valeric acid, pentanol or heptanoic acid was added to the nitrogen-limited medium containing methanol. The copolyester of 3-hydroxybutyrate and 4-hydroxybutyrate, P(3HB-co-4HB) was synthesized from 4-hydroxybutyrate, 1,4-butanediol, or γ-butyrolactone, and the copolyester of 3-hydroxybutyrate and 3-hydroxypropionate (P(3HB-co-3HP)), from 3-hydroxypropionate as the secondary carbon substrates, respectively.
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