ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

Biosynthesis of vitamin B₁₂ for the production of feed concentrates

E. Buntová, A. Peštuková, and E. Czafiková

Zentrales Forschungsinstitut für die Nahrungsmittelindustrie in Bratislava

Abstract: Actinomyces olivaceus fermentation culture was acidified and stabilized with Na₂SO₃. The dried prepn. contained 1-5 γ of vitamin B₁₂/g. On using Propio-nibacterium shermanii fermentation culture, centrifuging, and drying yield of vitamin B₁₂/g. was 80-300 γ. As fermentation substrate waste of food industries, molasses, wheat, potato, and waste in manuf. of yeast was utilized. By applying waste matter of biol. active yeast with cornsteep and potato water in Propionibacterium culture the yield of vitamin B₁₂ was increased 5-7 fold.

Full paper in Portable Document Format: 163a224.pdf (in Slovak)

Chemical Papers 16 (3) 224–231 (1962)