Table 4.

Result of the real-time PCR assay using 10 commercial products.

Real Commercial Products Tested that Labeled as 100% Curcuma longa
Sample Number	Plant System (18s rRNA)	CL_matK	CL_atpF	CL_ycf2	ZM_matK	ZM_atpF	ZM_ycf2
1	14.49	14.83	14.10	14.24	NDa	34.00	ND
	±0.15	±0.13	±0.17	±0.14		±0.07
2	15.23	15.27	15.70	14.50	38.26	33.59	ND
	±0.06	±0.18	±0.09	±0.08	±1.1	±2.01
3	19.82	22.62	22.65	20.16	36.28	32.32	34.79
	±0.08	±0.27	±0.04	±0.06	±0.61	±0.54	±0.47
4	15.25	15.95	16.33	15.25	33.60	30.05	34.35
	±0.06	±0.07	±0.03	±0.14	±0.20	±0.07	±0.21
5	14.01	15.29	15.46	15.29	31.53	31.41	ND
	±0.05	±0.07	±0.01	±0.07	±0.54	±0.56
6	19.19	17.68	21.97	15.28	32.34	31.14	ND
	±0.03	±0.12	±0.04	±0.04	±0.76	±0.14
7	16.44	16.10	16.39	14.90	34.89	34.57	ND
	±0.18	±0.03	±0.03	±0.09	±0.35	±0.65
8	18.87	15.35	20.24	14.10	32.82	34.55	ND
	±0.08	±0.02	±0.12	±0.02	±0.33	±0.95
9	15.31	14.63	15.15	13.26	31.05	34.00	ND
	±0.09	±0.08	±0.06	±0.02	±4.55	±0.08
10	16.10	15.84	16.57	14.95	32.02	30.23	33.77
	±0.01	±0.03	±0.02	±0.06	±0.24	±0.06	±0.92

^a ND indicates not detected at less than 40 cycles.