Method of preparing seeding material for production of citric ac

Details Method of preparing seeding material for production of citric ac Method of preparing seeding material for production of citric ac

1981-04-08

1983-04-19

Penland, R. B.

Chemistry: molecular biology and microbiology

Spore forming or isolating process

435144, 435254, C12N 300

Patent

active

043805833

ABSTRACT:
Disclosed is a method of preparing a seeding material for the production of citric acid by cultivating spores of a fungus on a nutrient medium containing carbon and nitrogen sources and mineral salts and by separating spores from the nutrient medium.
The fungus used is the strain Aspergillus niger R-3 selected from the strain Aspergillus niger -119 by the stepwise action on it of ethyleneimine, N-nitrosomethylurea and ultraviolet radiation.

REFERENCES:
patent: 3000791 (1961-09-01), Schweiger
patent: 3083144 (1963-03-01), Shepard
patent: 3892629 (1975-07-01), Smith et al.

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