Table 4.

Annual distribution of AFB₁, AFB₂ and total AFs content in brown rice

Years	Toxins	Concentration in μg/kg
		Positive samples (%)	Mean	Range
Jun–Dec 2006 (n = 13)
	AFB1	12 (92.3)	5.19	3.15–14.16
	AFB2	2 (15.4)	0.18	0.94–1.42
	Total AFs	12 (92.3)	5.37	3.15–15.58
2007 (n = 78)
	AFB1	67 (85.9)	5.45	1.12–24.65
	AFB2	8 (10.2)	0.17	1.42–2.62
	Total AFs	67 (85.9)	5.63	1.12–27.27
2008 (n = 36)
	AFB1	36 (100)	3.91	1.99–11.34
	AFB2	2 (5.6)	0.07	1.12–1.32
	Total AFs	36 (100)	3.98	1.99–12.66
2009 (n = 44)
	AFB1	44 (100)	2.72	1.29–11.59
	AFB2	3 (6.8)	0.054	0.52–1.30
	Total AFs	44 (100)	2.78	1.29–12.89
2010 (n = 49)
	AFB1	49 (100)	2.80	1.38–13.77
	AFB2	3 (6.1)	0.06	0.56–1.42
	Total AFs	49 (100)	2.86	1.38–15.19
Jan–Jun 2011 (n = 42)
	AFB1	42 (100)	2.47	1.07–7.89
	AFB2	3 (7.1)	0.04	0.52–0.74
	Total AFs	42 (100)	2.51	1.07–7.89