[Effect of KH2PO4 on Streptococcus lactis growth and nisin synthesis when the medium is kept at a constant pH].
When the pH of the medium was maintained at the level of 6.6--6.8 and the content of KH2PO4 in it was decreased, the biosynthetic activity of Streptococcus lactis, strain MGU, became lower. The culture assimilated low quantities of phosphorus from KH2PO4 at a high concentration of this salt in the medium; presumably, the culture required large quantities of potassium ions. If the pH of the medium is maintained at a constant value, the fermentation can be stopped 21 hr after the beginning of cultivation of Str. lactis, strain MGU.
D006863:Hydrogen-Ion Concentration; D013294:Lactococcus lactis / Q000187:drug effects* / Q000254:growth & development / Q000378:metabolism; D009561:Nisin / Q000096:biosynthesis*; D010710:Phosphates / Q000494:pharmacology*; D011188:Potassium / Q000494:pharmacology*
D010710:Phosphates; D009561:Nisin; D011188:Potassium
Issledovanie vliianiia KH2PO4 na rost Streptococcus lactis i sintez nizina v usloviiakh pH statirovaniia sredy.