摘要:
Stabilized FGF compositions are provided. The compositions comprise FGF or variant thereof and at least one reducing agent in an amount sufficient to inhibit FGF oxidation. Methods for increasing stability of FGF or variant thereof in a liquid or lyophilized composition and for increasing storage stability of such a composition are also provided.
摘要:
Stabilized FGF compositions are provided. The compositions comprise FGF or variant thereof and at least one reducing agent in an amount sufficient to inhibit FGF oxidation. Methods for increasing stability of FGF or variant thereof in a liquid or lyophilized composition and for increasing storage stability of such a composition are also provided.
摘要:
Mutations are induced in a microorganism selected from the species Saccharomyces cerevisiae or from the species Candia flareri. The resulting mutants are cultured in the presence of a fermentation inhibitor, such as acetaldehyde, ephedrine or PAC-dione, to form colonies having resistance to the inhibitor. Cells from the colonies are isolated and tested for yield of phenyl acetyl carbinol (PAC) in a fermentation with benzaldehyde and pyruvate. Yeast cells from the colonies that produce elevated levels of PAC are selected for use in subsequent fermentations. PAC is useful as an intermediate in the preparation of 1-ephedrine and d-pseudoephedrine, two well-known medicinal chemicals.
摘要:
Mutations are induced in a microorganism selected from the species Saccharomyces cerevisiae or from the species Candida flareri. The resulting mutants are cultured in the presence of a fermentation inhibitor, such as acetaldehyde, ephedrine or PAC-dione, to form colonies having resistance to the inhibitor. Cells from the colonies are isolated and tested for yield of phenyl acetyl carbinol (PAC) in a fermentation with benzaldehyde and pyruvate. Yeast cells from the colonies that produce elevated levels of PAC are selected for use in subsequent fermentations. PAC is useful as an intermediate in the preparation of l-ephedrine and d-pseudoephedrine, two well-known medicinal chemicals.