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. 2018 Nov 10;27(2):240–245. doi: 10.1016/j.jsps.2018.11.005

Table 1.

Quantity of microbial contamination of dietary supplements and raw materials for the production of dietary supplements.

Plant component Number of samples tested (n) TAMC
TYMC
Number of CFU/g (range) Samples showing contamination ()* Number of CFU/g (range) Samples showing contamination ()**
Dietary supplements
European blueberry fruit (lac. Vaccinium myrtillus) 50 <1,0 × 101–2,0 × 105 48 (1) 1,0 × 101–7 × 104 50 (2)
Powder from banana (lac. Musa L.) 10 <1,0 × 101–2,0 × 101 3 (0) 2,0 × 101–6,0 × 101 10 (0)
Hawthorn berry (lac. Crataegus laevigata) 10 4,0 × 101–4,0 × 103 10 (0) 1,0 × 101–8,0 × 101 10 (0)
Jerusalem artichoke root (lac. Helianthus tuberosus L.) 14 5,0 × 101–7,0 × 105 14 (2) <1,0 × 101–7,0 × 102 11 (0)
Raspberry fruit (lac. Rubus idaeus L.) 10 <1,0 × 101–3,0 × 102 7 (0) 1,0 × 101–4,0 × 104 10 (2)
Common flax semen (lac. Linum usitatissimum L.) 20 1,0 × 101–6,0 × 106 20 (2) <1,0 × 101–4,0 × 104 7 (1)
Globe artichoke leaves extract (lac. Cynara scolymus) 8 1,0 × 101–3,0 × 105 8 (1) 1,0 × 101–2,0 × 102 8 (0)



Raw materials for the production of dietary supplements
Nettle herb (lac. Urtica dioica L.) 5 8,0 × 101–2,5 × 105 5 (2) 6,0 × 101–4,0 × 105 5 (2)
Tomatose extract (lac. Solanum lycopersicum) 10 3,0 × 101–2,0 × 104 10 (0) 2,0 × 101–6,0 × 104 10 (3)
Fructus extract (lac. Sambucus nigra L.) 5 3,0 × 101–7,0 × 101 5 (0) 1,0 × 101–9,0 × 104 5 (1)
Mullein flower extract (lac. Verbascum L.) 5 1,0 × 101–8,0 × 101 5 (0) <1,0 × 101–1,0 × 102 2 (0)
Gentian extract (lac. Gentiana L.) 5 3,0 × 101–1,7 × 102 5 (0) <1,0 × 101–1,0 × 102 4 (0)

()* numer of samples showing contamination >105 CFU/g; ()** numer of samples showing contamination >104 CFU/g; CFU – colony forming units; TAMC – number of aerobic bacteria; TYMC – number of molds and yeasts.