Table 1.

The intra-day and inter-day precision and accuracy for determination of curcuminoids

	Present (g/100 g)	Added (g/100 g)	Found (g/100 g)	Accuracy (%)	Precision (RSD%)
Intra-day
Bisdemethoxycurcumin	0.095	0.096	0.097 ± 0.0001	101.08	0.13
Demethoxycurcumin	0.247	0.262	0.257 ± 0.0003	98.15	0.10
Curcumin	0.993	1.066	1.022 ± 0.002	95.84	0.13
Inter-day
Bisdemethoxycurcumin	0.095	0.096	0.098 ± 0.001	101.74	0.59
Demethoxycurcumin	0.247	0.262	0.257 ± 0.001	97.96	0.48
Curcumin	0.993	1.066	1.021 ± 0.003	95.78	0.30