Characterization and in vitro properties of potential probiotic Bifidobacterium strains isolated from breast-fed infant feces

Table 2 Resistance of different bifidobacterial strains to exposure to simulated gastric and bile juices

Strains	Tolerance to gastric juice (%, mean ± SD)	Tolerance to bile juice (%, mean ± SD)	Bile salt hydrolytic activity^a
B. adolescentis IF1-03	11.78 ± 0.39	8.0524 × 10⁻⁵ ± 1.5668 × 10⁻⁵	+
B. adolescentis IF1-04	15.16 ± 0.66	9.1403 × 10⁻⁵ ± 1.8147 × 10⁻⁵	+
B. adolescentis IF1-11	11.67 ± 0.13	0	+
B. adolescentis IF1-12	46.97 ± 4.29	9.7353 × 10⁻⁵ ± 9.7054 × 10⁻⁷	+
B. longum IF3-31	28.91 ± 0.51	0	+
B. longum IF3-53	26.59 ± 0.83	0	+
B. longum IF3-111	7.82 ± 0.76	0	+
B. breve IF2-173	0.57 ± 0.00	0	+
B. breve IF2-174	1.57 ± 0.02	6.0767 × 10⁻⁶ ± 4.4271 × 10⁻⁷	+
B. catenulatum/B. pseudocatenulatum IF2-141	1.71 ± 0.40	0	+
B. catenulatum/B. pseudocatenulatum IF2-191	2.14 ± 0.84	0	+
B. catenulatum/B. pseudocatenulatum IF3-131	0.02 ± 0.00	0	+
B. bifidum IF3-211	<0.01	7.2360 × 10⁻⁵ ± 6.4534 × 10⁻⁶	+
B. lactis Bb12	70.13 ± 0.26	0.4588 ± 0.0060	+
B. longum BBMN68	60.50 ± 0.0011	1.3266 × 10⁻⁵ ± 5.9050 × 10⁻⁶	-

ISSN: 1869-2044