Table 4. Recovery analysis of the STG spiked in cereal and oil products.

Matrix		Expected(ng/g)	IAC-icELISA Founda (ng/g)	Recovery (%)	HPLC-MS/MS Founda (ng/g)	Recovery (%)
Wheat	Within assayb (n = 6)	5	5.40±0.40	108.0	4.51±0.21	90.2
		10	9.62±0.45	96.2	9.67±0.35	96.7
		20	18.90±0.78	94.5	20.06±0.64	100.3
	Between assayc (n = 6)	5	5.51±0.53	110.2	4.57±0.08	91.4
		10	9.46±0.61	94.6	9.56±0.04	95.6
		20	19.40±0.97	97.0	20.64±0.13	103.2
Maize	Within assayb (n = 6)	5	4.61±0.37	92.2	4.59±0.18	91.8
		10	10.2±0.51	102.8	9.69±0.27	96.9
		20	20.06±0.74	100.3	20.48±0.34	102.4
	Between assayc (n = 6)	5	4.53±0.41	90.6	4.63±0.11	92.6
		10	9.71±0.89	97.1	9.87±0.08	98.7
		20	19.85±1.04	99.3	20.88±0.20	104.4
Peanut	Within assayb (n = 6)	5	4.17±0.18	83.4	4.55±0.13	91.0
		10	8.74±0.51	87.4	9.33±0.25	93.3
		20	18.65±1.21	93.3	18.92±0.17	94.6
	Between assayc (n = 6)	5	4.39±0.30	87.8	4.52±0.09	90.4
		10	9.21±0.75	92.1	9.25±0.14	92.5
		20	20.14±1.67	100.7	18.88±0.08	94.4

^aThe reported data are the mean ± SD.

^bThe assays are carried out in six replicates on the same day.

^cThe assays are carried out in six different days.