TABLE 2.

Effect of shaking speed of the water bath on PHB extraction from dried and wet cells using 1,3-dioxolane.

Shaking speed (rpm)	Scale (ml)	% recovery	% purity
50	Dried cells	66.8 ± 2.2	95.3 ± 2.2
	2 ml
	40 ml	67.2 ± 0.4	97.7 ± 0.7
100	Dried cells	83.9 ± 1.4	99.0 ± 0.4
	2 ml	85.5 ± 0.2	99.0 ± 0.2
	40 ml
	Wet cells	80.6 ± 2.0	97.1 ± 0.4
	40 ml
150	Dried cells	96.6 ± 0.1	99.1 ± 0.6
	40 ml
	1,000 ml	94.1 ± 0.4	99.3 ± 0.5
	Wet cells	94.6 ± 4.8	97.0 ± 0.1
	40 ml
	1,000 ml	92.6 ± 1.0	90.3 ± 1.5
Control	Dried cells	81.6 ± 1.0	97.9 ± 2.9
	40 ml
	Wet cells	76.7 ± 1.8	97.9 ± 0.1
	40 ml