Growth-Associated Production of Poly(3-Hydroxyvalerate) from n-Pentanol by a Methylotrophic Bacterium, Paracoccus denitrificans.

Applied and Environmental Microbiology
Tsuneo YamaneS Ueda

Abstract

Paracoccus denitrificans accumulated a polyester in its cells during growth on n-pentanol. The composition of the polyester varied during the cultivation: the level of the 3-hydroxyvalerate unit in the polyester increased, and eventually a homopolymeric poly(3-hydroxyvalerate) [P(3HV)] accumulated to an amount 22 to 24% of the cell dry weight. Growth-associated polyester synthesis was considerably affected by n-pentanol when its concentration was controlled at several levels. Maximum accumulation of the polyester was obtained at 0.02% (vol/vol). Physical and mechanical characteristics of the P(3HV) were determined and compared with those of other homo- and copolyesters. The P(3HV) was dextrorotatory and had number-averaged and weight-averaged molecular masses of 128,000 and 888,000 Da, respectively, with a rate of polydispersity of 6.93. The level of tensile strength of the P(3HV) was lower, and its extension to break was higher than that of the poly(3-hydroxybutyrate) homopolyester.

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Citations

Apr 7, 2020·Advanced Materials·So Young ChoiSang Yup Lee
Jan 12, 2013·Applied Microbiology and Biotechnology·Kianoush Khosravi-DaraniKenji Tanaka
Feb 28, 2019·Bioprocess and Biosystems Engineering·Zulfiqar Ali RazaIbrahim M Banat
Aug 21, 2013·Applied Microbiology and Biotechnology·Ken'ichiro Matsumoto, Seiichi Taguchi
Feb 2, 2019·Applied Biochemistry and Biotechnology·Maria J MotaJorge A Saraiva
Dec 9, 2020·International Journal of Molecular Sciences·Olga V AverinaVladimir P Chekhonin
Apr 4, 2021·Marine Drugs·Lorena Simó-CabreraRosa María Martínez-Espinosa
Jul 23, 1999·International Journal of Biological Macromolecules·M I MajidM N Azizan
Mar 6, 1999·Microbiology and Molecular Biology Reviews : MMBR·L L Madison, G W Huisman
Jul 7, 2021·Journal of Microbiology and Biotechnology·Cai-Yun WangYi-Xuan Zhang
Mar 15, 2005·Biomacromolecules·Daniel K Y Solaiman, Richard D Ashby

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