FERMENTATION MEDIUM COMPRISING CHELATING AGENT

    公开(公告)号:US20190292514A1

    公开(公告)日:2019-09-26

    申请号:US16317338

    申请日:2017-07-12

    申请人: BASF SE

    IPC分类号: C12N1/20 C12N1/38

    摘要: The present invention is directed to a fermentation medium and a fermentation method using said fermentation medium wherein the fermentation medium comprising a basal medium and a chelating agent having the formula (I) R1—CH(COOX1)—N(CH2COOX1)2, wherein R1 is selected from hydrogen, linear or branched C1-C4-alkyl, phenyl, benzyl, CH2OH, and CH2CH2COOX1, X1 is (MxH1-x), M being a monovalent cation, preferably being selected from ammonium or alkali metal or combinations of at least two of the foregoing, x is in the range of from zero to 1, wherein x is an average value.

    METHOD FOR PREPARING A FERMENTATION MEDIUM

    公开(公告)号:US20220340865A1

    公开(公告)日:2022-10-27

    申请号:US17620786

    申请日:2020-06-29

    申请人: BASF SE

    IPC分类号: C12N1/20

    摘要: The present invention is directed to a method of preparing a fermentation medium comprising the steps of a) mixing components of a fermentation medium comprising a complex nutrient source in water, wherein the complex nutrient source is in an amount of 0.5-30% w/v of the fermentation medium; b) adjusting the pH of the fermentation medium obtained in step a) to a pH between pH 3.0 and pH 6.7; c) subjecting the fermentation medium subsequently to a heat treatment and thereafter adjusting the pH to a pH value suitable for cell cultivation. The present invention is further directed to a method a fermentation process comprising cultivation of the cells in the fermentation medium of the invention and the production of a compound of interest. The present invention is further directed to a method for reducing color formation and viscosity during fermentation medium preparation and during the fermentation process.