METHOD FOR FREEZE-DRYING OF MICROORGANISMS

摘要

A microorganism is pre-treated by (a) culturing microorganism, e.g. Lactobacillus acidophillus, Streptococcus faecium etc., (b) concentrating the obtd. culture broth by centrifuging or ultra-filtrating, and (c) pumping the concentrated culture broth into liquid nitrogen by using silicone tube of 2-5 mm diameter and peristaltic pump. The process is useful for freeze drying microorganism.