Table 2.
Flow of records by search strategy
| Species | No. papers | |||
|---|---|---|---|---|
| Title screening step**** | Title/abstract screening step**** | Article evaluation step (screening for potential relevance) | Article evaluation step (identification of potential safety concerns) | |
| Bacteria | 1,750 | 57 | 23 | 14 |
| Bacillus spp. | 537 | 3 | 2 | 1 |
| Bifidobacterium spp. | 168 | 17 | 6 | 1 |
| Carnobacterium divergens | 0 | |||
| Corynebacterium glutamicum | 47 | 0 | 0 | 0 |
| Gluconobacter oxydans | 132 | 2 | 0 | 0 |
| Xanthomonas campestris | 1 | 0 | ||
| Lactobacillus spp. | 426 | 13 | 7 | 7 |
| Lactococcus lactis | 152 | 9 | 4 | 4 |
| Leuconostoc spp. | 44 | 9 | 3 | 1 |
| Microbacterium imperiale | 0 | 0 | ||
| Oenococcus oeni | 43 | 0 | 0 | 0 |
| Pasteuria nishizawae | 0 | 0 | ||
| Pediococcus spp. | 126 | 1 | 0 | 0 |
| Propionibacterium spp. | 30 | 1 | 0 | 0 |
| Streptococcus thermophilus | 45 | 2 | 0 | 0 |
| Viruses | 74 | 1 | 0 | 0 |
| Alphaflexiviridae | 26 | 0 | 0 | 0 |
| Baculoviridae | 48 | 1 | 0 | 0 |
| Yeasts | 1,210 | 58 | 35 ** | 21 * , ** , *** |
| Candida famata (teleomorph = Debaryomyces hansenii) | 1210 | 58 | 35 | 5 |
| Candida kefyr (teleomorph = Kluyveromyces marxianus) | 13 | |||
| Candida pelliculosa | 2 | |||
| Hanseniaspora uvarum | 1 | |||
| Saccharomyces cerevisiae including Saccharomyces boulardii | 5 | |||
| Total | 3,034 | 116 | 58 | 35 |
| Excluded | 2,918 | 58 | 23 | |
*
21 relevant articles with 26 studies as some articles describe possible safety concerns linked to more than one TU.
***
For the other yeast species with QPS status, no relevant studies were identified through the ELS.
****
For practical reasons, some TUs were grouped for the screening steps.