Table 1 Characteristics of primary research studies
Study | Sample | No of sample | No of samples positive | References |
|---|---|---|---|---|
Plant derived food samples | ||||
Study 1 | Herbs | 22 | 1 | Li et al. (2014) |
Study 2 | Herbs | 67 | 26 | Jaradat et al. (2009) |
Study 3 | Herbs | 23 | 14 | Baumgartner et al. (2009) |
Study 4 | Spices | 28 | 1 | Kandhai et al. (2010) |
Study 5 | Spices | 26 | 7 | Baumgartner et al. (2009) |
Study 6 | Cereal and cereal products | 85 | 12 | Li et al. (2014) |
Study 7 | Cereal and cereal products | 123 | 6 | Kandhai et al. (2010) |
Study 8 | Cereal and cereal products | 50 | 8 | Lee et al. (2012) |
Study 9 | Fresh vegetable produce | 47 | 2 | Kandhai et al. (2010) |
Study 10 | Ready to eat food | 128 | 19 | Lee et al. (2012) |
Study 11 | Fruits | 41 | 3 | Lee et al. (2012) |
Study 12 | Wheat | 13 | 13 | Lou et al. (2014) |
Study 13 | Dry noodles | 5 | 5 | Lou et al. (2014) |
Study 14 | Rice flour | 7 | 2 | Lou et al. (2014) |
Study 15 | Rice flour | 12 | 4 | Cetinkaya et al. (2013) |
Study 16 | Confessionary | 42 | 3 | Baumgartner et al. (2009) |
Animal derived food samples | ||||
Study 17 | Powdered infant formula | 32 | 1 | Hochel et al. (2012) |
Study 18 | Powdered infant formula | 3 | 3 | Terragno et al. (2009) |
Study 19 | Powdered infant formula | 76 | 1 | Jaradat et al. (2009) |
Study 20 | Powdered infant formula | 399 | 49 | Pan et al. (2014) |
Study 21 | Powdered infant formula | 140 | 20 | El-Gamal et al. (2013) |
Study 22 | Follow up formula | 5 | 1 | Kandhai et al. (2010) |
Study 23 | Follow up formula | 91 | 3 | Chap et al. (2009) |
Study 24 | Powdered instant products | 182 | 1 | Kandhai et al. (2010) |
Study 25 | Milk powder | 175 | 7 | Kandhai et al. (2010) |
Study 26 | Pork | 92 | 2 | Wang et al. (2012) |
Study 27 | Minced meat | 222 | 7 | Kandhai et al. (2010) |
Study 28 | Powdered infant formula | 395 | 8 | Kandhai et al. (2010) |