Table 2:

Performance characteristics of Nile red-based PHB quantitation in PHB producing E.coli cells compared to UV spectrophotometery

	Accuracy		Precision
Method Detail	%REa	ANOVAb	% RSDc	SEMd
		F(df)		µg/µl
Ethanol extraction spectrofluorometry	39.43	21.02, (1, 4)	12.36	4.52
		P = 0.019
Protein digestion,	17.22	0.12, (1, 4)	5.531	3.47
Ethanol extraction
Spectrofluorometry
		P = 0.73

^aPercentage relative error;

^bAnalysis of Variance;

^cRelative standard deviation;

^dStandard error of mean.