Factors Affecting Poly(3-hydroxybutyrate) Production from Oil Palm Frond Juice by Cupriavidus necator (CCUG52238^T)

Table 1

Effect of initial pH value on the biosynthesis of P(3HB)^a.

Initial pH	CDW (g/L)	Total P(3HB) (g/L)	P(3HB) content (wt.%)^b
6.0	6.42	1.28	20
6.5	7.12	1.99	28
7.0	8.57	2.91	34
7.5	6.89	1.72	25
8.0	4.02	0.40	10

^aMSM containing 16 g/L of total sugars in OPF juice and supplied with 1.0 g/L of (NH₄)₂SO₄, incubated at 30°C for 48 h with agitation at 200 rpm.
^bDetermination by GC from freeze dried samples.
^∗Values obtained herewith are means of two independent experiments.