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.
Freeze-drying, or lyophilization, is like âsuspended animationâ for food. In this process, fresh or cooked food is rapidly frozen and placed in a vacuum. The finished product is substantially lighter and more compact, making it a great option of lightweight backpackers. Virtually any food item and ingredient can be freeze-dried. To do this however, specialized equipment is required, making it a costly option.