Table 1.

Strategies for high molecular weight PHB production.

Microorganisms	Mw (MDa)	Reactor Type	Technology	PHB (%)	YPHB/CH4 (g g−1)	References
Methylocystic sp. GB 25 DSM 7674	3.10	Pressure bioreactor	Potassium deficiency	33.60	0.45	[105]
Methylocystic sp. GB 25 DSM 7674	2.46	Pressure bioreactor	Sulfur deficiency	32.60	0.40	[105]
Methylocystic sp. GB 25 DSM 7674	1.81	Pressure bioreactor	Iron deficiency	10.40	0.22	[105]
Methylosinus trichospporium IMV3011	1.50	Shake flasks	Citric acid +Methanol	40.00	–	[38]
Methylocystis sp. GB25 DSMZ 7674	2.50	Pressure bioreactor	Ammonium deficiency	51.30	0.52	[110]
Methylocystis sp. GB25 DSMZ 7674	2.50	Pressure bioreactor	Phosphorus deficiency	46.80	0.55	[110]
Methylocystis sp. GB25 DSMZ 7674	2.50	Pressure bioreactor	Magnesium deficiency	28.30	0.37	[110]
Methylocystis sp. GB25 DSM 7674	2.30	Pressure bioreactor	Nitrogen deficiency	51.00	0.54	[111]