Detection of Melamine in Soybean Meal Using Near-Infrared Microscopy Imaging with Pure Component Spectra as the Evaluation Criteria

Table 1

Description of the samples Set B and Set C.

Soybean meal sample number	Melamine sample number	Set B		Set C
		Sample number	Melamine (g kg^−1)	Sample number	Melamine (mg kg^−1)
Soy 1	Mel 1	Set B1	5	Set C1	1,000
Soy 2	Mel 2	Set B2	5	Set C2	500
Soy 3	Mel 3	Set B3	5	Set C3	100
Soy 4	Mel 1	Set B4	5	Set C4	50
Soy 5	Mel 2	Set B5	5	/	/
Soy 6	Mel 3	Set B6	10	/	/
Soy 7	Mel 1	Set B7	10	/	/
Soy 8	Mel 2	Set B8	10	/	/
Soy 9	Mel 3	Set B9	10	/	/
Soy 10	Mel 1	Set B10	10	/	/
Soy 11	Mel 2	Set B11	25	/	/
Soy 12	Mel 3	Set B12	25	/	/
Soy 13	Mel 1	Set B13	25	/	/
Soy 14	Mel 2	Set B14	25	/	/
Soy 15	Mel 3	Set B15	25	/	/
Soy 16	Mel 1	Set B16	50	/	/
Soy 17	Mel 2	Set B17	50	/	/
Soy 18	Mel 3	Set B18	50	/	/
Soy 19	Mel 1	Set B19	50	/	/
Soy 20	Mel 2	Set B20	50	/	/