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2 076 906

(13)

C1

(51)

IPC

(21) (22)

Application

94012671/13, 1994-04-11

(22)

Actual filing date

1994-04-11

(45)

Published

1997-04-10

(72)

Inventor

Avchieva P.B.Vinarov A.Ju.

(73)

Holder

Gosudarstvennyj Nauchno-Issledovatel'Skij Institut Biosinteza Belkovykh Veshchestv

METHOD OF PREPARING CITRIC ACID AT CONTINUOUS REGIME Russian patent published in 1997 - IPC

Abstract RU 2076906 C1

FIELD: microbiological industry, biotechnology. SUBSTANCE: invention relates to citric acid preparing at fungus Aspergillus niger culturing. Molasses is prepared for fermentation by sorption treatment on clinoptilolite. After 24-36 h of cultivation onset pH value of medium is decreased to 2.5-3.0 by feeding acidic titrants to medium. At the second stage citric acid secretion is induced by feeding permeabilizing reagents to medium at concentrations 0.001-0.01%. Product can be used in food industry, medicine, pharmacology. EFFECT: improved method of preparing. 2 cl, 3 tbl, 1 dwg

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RU 2 076 906 C1

Authors

Avchieva P.B.

Vinarov A.Ju.

Dates

1997-04-10—Published

1994-04-11—Filed

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