Table 1.

Examples of wild-type cyanobacterial strains, with reported poly (3-hydroxybutyrate) (PHB) content, the carbon source, and growth conditions used for the production of the polymer.

Cyanobacteria	PHB Content (% DCW)	Substrate	Production Condition	Polymer Composition	Reference
Synechocystis sp. PCC 6803	38	Acetate	P limitation and gas exchange limitation 1	PHB	[31]
Synechocystis sp. PCC 6714	16	CO2	N 2 and P 3 limitation	PHB	[32]
Spirulina platensis	6.0	CO2	Not given	PHB	[33]
Spirulina platensis UMACC 161	10	acetate and CO2	N starvation	PHB	[34]
Spirulina maxima	7–9	CO2	N and P limitation	PHB	[35]
Gloeothece sp. PCC 6909	9.0	acetate	Not given	Not specified	[36]
Nostoc moscorum Agardh	60	acetate and valerate	N deficiency	PHB-co-PHV	[37]
Nostoc moscorum	22	CO2	P starvation	PHB	[38]
Alusira fertilisima CCC444	77	fructose and valerate	N deficiency	PHB-co-PHV	[39]
Alusira fertilisima CCC444	85	citrate and acetate	P deficiency	PHB	[40]
Synechocystis PCC 7942	3	CO2	N limitation	PHB	[41]
Synechocystis PCC 7942	25.6	acetate	N limitation	PHB	[41]
Synechocystis sp. CCALA192	12.5	CO2	N limitation	PHB	[42]
Anabaena Cylindrica	<0.005	CO2	Balanced growth	PHB	[43]
Anabaena cylindrica	2.0	propionate	N limitation	PHB + PHV	[43]
Synechococcus elongatus	17.2	CO2 and sucrose	N deficiency	Not specified	[44]
Caltorix scytonemicola TISTR 8095	25	CO2	N deficiency	PHB	[45]

¹ gas exchange limitation = limitation of gas transfer to the culture vessel. ² N = nitrogen. ³ P = phosphorus.