Process for the production of citric acid

Details Process for the production of citric acid Process for the production of citric acid

1973-10-12

1976-02-03

Shapiro, Lionel M.

Textiles: fiber preparation

195139, 195114, C12D 104

Patent

active

039363520

ABSTRACT:
The invention relates to a process for the production of citric acid which omprises subjecting a carbohydrate-containing material to a submerged fermentation with a citric acid producing strain of Aspergillus niger in the presence of metals such as iron and copper.
The object of the invention is to provide a process in which control of the trace metal content can be achieved in an economic and convenient manner.
The improvement according to the invention comprises carrying out said fermentation in the presence of refined steel which in addition to iron and copper contains at least one component selected of the group comprising chromium, manganese, nickel, molybdenum, niobium and titanium.

REFERENCES:
patent: 1524233 (1925-01-01), Berrigan
patent: 2394031 (1946-02-01), Waksman et al.
patent: 2883329 (1959-04-01), Vergnaud et al.
patent: 2910409 (1959-10-01), Fried et al.
patent: 3075888 (1963-01-01), Achorn et al.
patent: 3290227 (1966-12-01), Batti
patent: 3349005 (1967-10-01), Batti
Chem. Abstracts 66:17989q.

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