Table 1.
Distribution of samples collected in this study in five dairies between December 2013 and July 2014 in the states of São Paulo, Minas Gerais and Goiás (Brazil).
| Dairy | Sampling date | Number of samples per category |
Total | |||
|---|---|---|---|---|---|---|
| Raw material | Product | Food contact surfaces | Non-food contact surfaces | |||
| Goiás state | ||||||
| 1 | December 2013 | 4 | 3 | 9 | 9 | 25 |
| 2 | February 2014 | 4 | 9 | 12 | 5 | 30 |
| 3 | March 2014 | 4 | 7 | 13 | 6 | 30 |
| July 2014 | 4 | 9 | 11 | 6 | 30 | |
| Minas Gerais state | ||||||
| 4 | December 2013 | 3 | 5 | 9 | 4 | 21 |
| January 2014 | 2 | 7 | 8 | 6 | 23 | |
| February 2014 | 3 | 21 | 21 | 8 | 53 | |
| March 2014 | 3 | 9 | 17 | 14 | 43 | |
| July 2014 | 3 | 4 | 11 | 10 | 28 | |
| São Paulo state | ||||||
| 5 | December 2013 | 4 | 11 | 10 | 5 | 30 |
| January 2014 | 3 | 7 | 7 | 7 | 24 | |
| February 2014 | 3 | 9 | 8 | 4 | 24 | |
| March 2014 | 3 | 13 | 15 | 4 | 35 | |
| July 2014 | 3 | 4 | 10 | 8 | 25 | |
| Total | 46 | 118 | 161 | 96 | 421 | |
The samples are grouped according to the sample category, e.g., raw material, product, food-contact surfaces, and non-food-contact surfaces depending on the date and the sample category.