PURPOSE: To produce a medium for a lactobacillus starter having phage resistance and the proliferating effect to the lactobacillus, by removing a part of calcium from the milk components, and adding the sodium or potassium salt of a specific organic acid to the components.
CONSTITUTION: Defatted milk or a solution of defatted milk powder is boiled in the presence of an orthophosphate, and centrifuged to remove ≥20%, preferably ≥40%, especially about 50% of the calcium content in the milk components. The obtained supernatant liquid is added with the sodium or potassium salt of an organic acid selected from succinic acid, malic acid, tartaric acid, and acetic acid, and sterilized by heating. The sterilized product is stored in the form of liquid or in powdery form after concentration and spray drying.
IWANA HIROKAZU
KANEKO TSUTOMU
TAKAHASHI TSUYOSHI
