Table 4.
Technological characteristics and antibiotic resistance of Lactobacillus strains isolated from Algerian goat’s milk
| ?pH | Coagulation EPS | Antibacterial activity | Antibiotics | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Strains | 6h | 12h | 24h | 24h | S. aureus CECT 86a | S. aureus UT 602b | Bacillus cereus INRA AVZ 421c | Listeria monocytogenes CECT 932a | P | A | V | T | E | K | G | C | |
| L. plantarum | |||||||||||||||||
| LbMA9 | 0.27 | 1.01 | 1.60 | + | - | + | + | - | - | MS | S | R | S | S | R | R | S |
| LbMF13 | 0.50 | 0.97 | 1.46 | - | - | + | + | + | - | S | MS | R | S | S | R | R | S |
| LbMF33 | 0.52 | 0.78 | 1.16 | - | - | - | - | - | - | S | MS | R | S | S | R | R | S |
| LbMS4 | 0.53 | 1.05 | 2.14 | - | - | - | - | - | - | S | S | R | S | S | R | R | S |
| LbMS9 | 0.51 | 1.13 | 1.97 | + | - | - | - | - | - | S | S | R | S | S | R | R | S |
| LbMS14 | 0.56 | 1.11 | 2.07 | + | + | + | + | - | - | S | S | R | S | S | R | R | S |
| LbMS16 | 0.73 | 1.31 | 2.20 | + | + | - | - | - | - | S | S | R | S | S | R | R | S |
| LbMS20 | 0.57 | 1.07 | 1.96 | + | - | - | - | - | - | MS | S | R | S | S | R | R | S |
| LbMS21 | 0.92 | 1.46 | 2.30 | + | - | - | - | - | - | S | S | R | S | S | R | R | S |
| LbMS24 | 0.56 | 0.91 | 1.49 | - | - | + | + | + | - | S | R | R | S | S | R | R | S |
| LbMO16 | 0.27 | 0.89 | 1.43 | - | + | + | + | + | - | S | MS | R | S | S | R | R | MS |
| LbMO27 | 0.56 | 0.98 | 1.74 | + | + | - | - | - | - | S | S | R | S | S | R | R | S |
| LbMO42 | 0.40 | 0.86 | 1.33 | - | - | - | - | - | - | R | S | R | S | S | R | R | R |
| L. pentosus | |||||||||||||||||
| LbMS40 | 0.43 | 0.89 | 1.29 | - | - | - | - | - | - | S | S | R | S | S | R | R | MS |
| LbMT9 | 0.56 | 1.19 | 1.3 | - | - | - | - | - | - | R | R | R | S | S | R | R | S |
| LbMT10 | 0.53 | 0.76 | 1.18 | - | + | - | - | - | - | S | MS | R | S | S | R | R | S |
| L. rhamnosus | |||||||||||||||||
| LbMF24 | 0.63 | 1.10 | 1.87 | + | + | - | - | - | - | S | S | R | S | S | R | R | S |
| LbMF25 | 0.69 | 1.40 | 1.96 | + | + | + | + | - | - | S | S | R | S | S | R | R | S |
| L. fermentum | |||||||||||||||||
| LbMA47 | 0.25 | 0.83 | 1.35 | - | + | - | - | - | - | S | MS | R | S | S | R | R | MS |
+: Positive reaction; -: Negative reaction.
EPS: Exopolysaccharide production
(a)
CECT: Colección Española de Cultivos Tipo, Valencia, Spain
(b)
U.T: University of Tlemcen laboratory collection, Algeria
(c)
INRA AVZ : Station de Technologie des Produits Végétaux, Institut national de la Recherche Agronomique, Avignon, France (INRA)
PG: penicillin (10μg); A: ampicillin (10μg); V: vancomycin (30μg); T: tetracycline (30μg); E: erythromycin (15μg);
K: kanamycin (30μg); G: gentamicin (10μg); C: chloramphenicol (30μg).
S: sensitive strain; MS: moderately resistant strains; R: resistant strain.