TABLE 3.

Patented methods for the production of PHAs containing 4HB.

Publication number	Content	References
WO2018233703	Gene cassette for fine control of composition ratio of 4-hydroxybutanoic acid in copolymer and application thereof	Li et al., 2018
WO2014058655	Polyhydroxyalkanoate copolymer compositions (3HB-co-4HB) and methods for making the same	Ramseier et al., 2014
US6689589	Biological systems for manufacture of polyhydroxyalkanoate polymers containing 4-hydroxyacids	Huisman et al., 2002
US6117658	Methods of making polyhydroxyalkanoates comprising 4-hydroxybutyrate monomers units	Dennis and Valentin, 2000
WO1998039453	Methods for the biosynthesis of polyesters	Hein et al., 1998
WO1997007153	Methods for controlling microbial polyester structure by the addition of polyethylene glycol (PEG)	Gross et al., 1997