Aflatoxin M1 contamination in raw milk and its association with herd types in the ten provinces of Southern China

Figures & data

Table 1. Incidence and distribution information of Aflatoxin M1 (AFM1) in raw milk in the ten provinces of southern China.

Regions	Positive/total samples (%)	Distribution information of AFM1 levels			Max value ng/L	Mean ± SD ng/L
		≤50	51–500	>500
Zhejiang	8/98 (8.16%)	8	0	0	28.3	14.8 ± 9.1^C
Jiangxi	5/61 (8.20%)	5	0	0	47.6	42.3 ± 3.5^A
Jiangsu	49/134 (36.60%)	46	3	0	486	35.3 ± 66.8^B
Hunan	0/29 (0)	0	0	0	<5	–
Hubei	0/99 (0)	0	0	0	<5	–
Hainan	0/2 (0)	0	0	0	<5	–
Guangxi	5/116 (4.32%)	1	4	0	240	122.1 ± 81.4^A
Guangdong	0/137 (0)	0	0	0	<5	–
Fujian	25/61 (41.00%)	25	0	0	50	26.8 ± 9.5^B
Anhui	2/60 (3.33%)	2	0	0	8	7.0 ± 1.4^C
Total	94/797 (11.80%)	87	7	0	486	35.7 ± 55.7

Mean ± SD is calculated from the value of the positive samples. Within columns, the mean ± SD with different superscript letters indicate a significant difference (P < .05).

Table 2. Aflatoxin M1 (AFM1) contamination in raw milk and its association with herd types.

Herd types	Positive/total samples (%)	Distribution information of AFM1 levels			Max value ng/L	Mean ± SD ng/L
		≤50	51–500	>500
Milk processing plants	34/303 (11.20%)	27	7	0	486	56.3 ± 88.5^A
Large-scale farms	49/401 (12.20%)	49	0	0	50	24.1 ± 11.6^B
Small farm cooperatives	11/93 (11.80%)	11	0	0	40	23.4 ± 9.8^AB

Mean ± SD is calculated from the value of the positive samples. Within columns, the mean ± SD with different superscript letters indicate a significant difference (P < .05).

Figure 1. Distribution information of Aflatoxin M1 (AFM1)-positive samples by provinces and herd types. Seven samples from milk processing plants (three from Jiangsu and four from Guangxi), exceeded the EU regulatory limit of 50 ng/L.

Data availability statement

The authors confirm that the data supporting the findings of this study are available within the article and its supplementary materials.