Section 608 of the Federal Clean Air Act requires that all persons who maintain. must be certified as Universal technicians. Should EPA regulations change after a technician becomes certified. or 18 out of 25 correct.
Effect of freeze-drying on the viability of selected probiotic organisms is shown in Table 1. Freeze drying had a deleterious effect on the viability of all probiotic organisms. In general, Bifidobacterium spp. had 7% higher survival than Lactobacillus spp. with the exception of B. longum 1941.
Bifidobacterium infantis 17930 and L. rhamnosus GG had the greatest survival of 85.73% and 84.99%, respectively, of the 13 probiotic strains after being freeze-dried. The strains selected for further experiments were L. acidophilus 33200, L. casei 279, B. longum 536 and L. rhamnosus GG.