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What concentrations of organic carbon are used for polyhydroxyalkanoate production? 


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Polyhydroxyalkanoate (PHA) production utilizes various concentrations of organic carbon sources. Singh and Shrivastava found that the bacterium Pseudomonas pseudoflava produced the most PHA at a concentration of 19 g/l . Jimoh determined that an optimal PHA production was achieved at 8% substrate concentration . Tyagi and Sharma used different concentrations of untreated crude paper industry effluent (PIE) and achieved maximum PHA production at 30% PIE . Amini et al. used a maltose concentration of 40 g/l to produce PHB from beer brewery wastewater . Heepkaew and Suwannasilp investigated PHA production in two-stage continuous stirred tank reactor (CSTR) systems and found that PHA accumulation was achieved with influent glycerol concentrations of 3000 mg COD/L . Therefore, the concentrations of organic carbon used for PHA production vary depending on the specific study and carbon source employed.

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The paper mentions that the systems were fed with influent glycerol concentrations of 3000 mg COD/L for polyhydroxyalkanoate production.
The paper mentions that maltose, an organic carbon source, was used for polyhydroxyalkanoate production. The optimum maltose concentration for biopolymer production was 40 g/L.
The paper states that an optimal PHA production was achieved at 8% substrate concentration, indicating that 8% organic carbon concentration was used for polyhydroxyalkanoate production.
The concentrations of organic carbon used for polyhydroxyalkanoate production in this study ranged from 4 g/l to 55 g/l.

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