Table 5.

Properties of P(3HB) homopolymer and PHA copolymers synthesized by C. necator B-10646, R. eutropha B5786 and B8562 from JA hydrolysates.

Strain	Culture Conditions	Number Average Molecular Weight, Mn, kDa	Weigh Average Molecular Weight, Mw, kDa	Polydispersity, Ð	Degree of Crystallinity, Cx, %	Melting Point, Tmelt, °C	Thermal Degradation Temperature, Tdegr, °C
P(3HB)
Hydrolysate of JA tubers
C. necator B-10646	Shake flasks, 72 h	104	432	4.2	71	176	293
R. eutropha B5786	Shake flasks, 72 h	121	480	4.0	72	178	290
R. eutropha B8562	Shake flasks, 72 h	111	466	4.2	72	178	296
Hydrolysate of JA vegetative biomass
C. necator B-10646	Shake flasks, 72 h	116	448	3.9	70	175	280
R. eutropha B5786	Shake flasks, 72 h	110	430	4.0	75	171	290
R. eutropha B8562	Shake flasks, 72 h	103	409	4.0	69	177	281
Hydrolysate of JA tubers
P(3HB-co-9.9 mol.%3HV)
C. necator B-10646	Shake flasks, 72 h; addition of sodium valerate (1 g/L)	129	620	4.8	60	170	275
P(3HB-co-37.4 mol.%3HV)
C. necator B-10646	Shake flasks, 72 h; addition of sodium valerate (2 g/L)	194	1170	6.0	49	174	283
P(3HB-co-11.9 mol.%4HB)
C. necator B-10646	Shake flasks, 72 h; addition of ε-caprolactone (2 g/L)	147	527	3.6	54	170	285
P(3HB-co-21.1 mol.%4HB)
C. necator B-10646	Shake flasks, 72 h; addition of ε-caprolactone (4 g/L)	162	550	3.4	46	169	284