Resistance of Microencapsulated Lactobacillus acidophilus LA1 to Processing Treatments and Simulated Gut Conditions

摘要: This investigation reports the effect of microencapsulation using sodium alginate and starch on tolerance probiotic Lactobacillus acidophilus LA1 to selected processing conditions simulated gastrointestinal environments. The organism survived better in protected form at high temperatures (72, 85, 90 °C) salt concentrations (1%, 1.5%, 2%). free cells were completely destroyed °C whereas microencapsulated reduced by 4.14 log cycles. cycle reduction was 5.67 2.30, respectively, when incubated for 3 h with 2% (w/v) NaCl. Homogenization did not affect viability but led disruption protective encapsulating material around cells. Microencapsulation provided protection gastric pH (1.0, 1.5, 2.0) bile (1.0%, 2.0%). registered 5.47 2.16 reduction, after 3-h incubation (w/v). release organisms colonic required 2.5 h. These studies demonstrated that L. is an effective technique against extreme under environment.