Preliminary Evaluation of Probiotic Properties of Lactobacillus Strains Isolated from Sardinian Dairy Products

Table 1

Antimicrobial activity against the microbial pathogens tested, bile salt hydrolase (BSH) activity, and raffinose fermentation of selected potential probiotic Lactobacillus strains isolated from Sardinian dairy products.

Strains	Target strains						Hydrolysis of
	S. aureus; ATCC 25923	L. monocytogenes; ATCC 7644	E. coli; ATCC 35150	E. faecalis; ATCC 29212	S. Typhimurium; ATCC 14028	C. albicans; ATCC 10231	TDCA	GDCA	Raffinose*
L. paracasei 62LP39	7.5	9	6.5	1.5	>10	2	+	+	+
L. paracasei 8/18710	5	9	7.5	2	>10	1.5	−	−	−
L. paracasei 1A6M	6	7.5	6	2	>10	1	+	+	+
L. paracasei 3A1M	3	6	5	1	7.5	0	−	−	−
L. paracasei 5/22019	6.5	8.5	5	0.5	7.5	0	−	+	−
L. paracasei 2C6M	6	5	6	0.5	7.5	0	−	−	−
L. paracasei 60LP37	7.5	9	9	1	>10	0.5	−	−	−
L. paracasei 2A11	6.5	9	5	0.5	>10	0	−	−	−
L. paracasei 6B1M	5	7.5	6	1	>10	0.5	−	−	−
L. paracasei 2B1M	5	9	6	1.5	>10	1	−	−	−
L. plantarum 11/20966	7	9	7.5	1	>10	2.5	+	+	+
L. plantarum 19/20711	7.5	9	7.5	2	>10	2	+	+	+
L. plantarum 4/16868	10	10	9	2.5	>10	2	+	+	+
L. plantarum 8C1M	5	5	6	1.5	>10	0	−	+	−
L. plantarum 9FS15	6	1.5	5	1.5	>10	1.5	−	−	−
L. plantarum 28SP1	4.5	2.5	3	1	>10	1.5	−	−	−
L. plantarum 2AFS11	6.5	9	5	1	>10	0.5	−	−	−
L. plantarum 5FS12	6	5	6	0.5	7.5	0	−	−	−
L. plantarum 12LP13	5	7.5	6	1	>10	0	−	−	−
L. brevis 1C3M	6.5	7.5	6	0.5	>10	4	−	+	−
L. brevis 9/11B	5	9	5	0.5	>10	0.5	−	+	−
L. brevis 21FS1B	5	7	5	1	>10	0.5	−	−	−
L. brevis 9A3M	4	5	5	0	>10	0.5	−	−	−

 *Determined by API-50 CHL galleries (bioMérieux).