Acid tolerance is a necessary property for any strain that hopes
to affect the gastro-intestinal tract. The ability to survive in simulated
gastric juices was evaluated in vitro. Fig. 2 shows the viable
counts of the isolated strains after exposure to low pH for 3 h. The
viable counts of the two isolates of Pediococcus species and Lb. sakei
SW04 were retained at 109 CFU/mL after exposure to simulated
gastric juices at pH 2.0, 2.5, and 3.0 for 3 h, indicating high resistance
to acidic conditions. Two strains of Lb. plantarum, namely
SW03 and SW07, showed high resistance to low pH. However, 3 h
of exposure to pH 2.5 resulted in approximately 1 log reduction of
Lb. plantarum SW06. Among all of the isolates, P. acidilactici SW05
showed the highest survival capacity at pH 2.5 for 3 h (Fig. 3). The
survival rate of most of the isolates did not differ significantly
(P > 0.05) at each pH.
Acid tolerance is a necessary property for any strain that hopesto affect the gastro-intestinal tract. The ability to survive in simulatedgastric juices was evaluated in vitro. Fig. 2 shows the viablecounts of the isolated strains after exposure to low pH for 3 h. Theviable counts of the two isolates of Pediococcus species and Lb. sakeiSW04 were retained at 109 CFU/mL after exposure to simulatedgastric juices at pH 2.0, 2.5, and 3.0 for 3 h, indicating high resistanceto acidic conditions. Two strains of Lb. plantarum, namelySW03 and SW07, showed high resistance to low pH. However, 3 hof exposure to pH 2.5 resulted in approximately 1 log reduction ofLb. plantarum SW06. Among all of the isolates, P. acidilactici SW05showed the highest survival capacity at pH 2.5 for 3 h (Fig. 3). Thesurvival rate of most of the isolates did not differ significantly(P > 0.05) at each pH.
การแปล กรุณารอสักครู่..
