ES2073357A1 - Process for selecting yeasts which are overproducers of amino acids - Google Patents
Process for selecting yeasts which are overproducers of amino acidsInfo
- Publication number
- ES2073357A1 ES2073357A1 ES09301641A ES9301641A ES2073357A1 ES 2073357 A1 ES2073357 A1 ES 2073357A1 ES 09301641 A ES09301641 A ES 09301641A ES 9301641 A ES9301641 A ES 9301641A ES 2073357 A1 ES2073357 A1 ES 2073357A1
- Authority
- ES
- Spain
- Prior art keywords
- amino acids
- medium
- yeasts
- culture
- overproducers
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Micro-Organisms Or Cultivation Processes Thereof (AREA)
- Preparation Of Compounds By Using Micro-Organisms (AREA)
- Fodder In General (AREA)
Abstract
Process for the selection of yeasts which are overproducers of amino acids in continuous culture controlled by pH which can be used in the food industry to produce biomass having a high amino acids content as a supplement for animal feedstuffs and human food, characterized in that delivery of the medium from the feed tank 1 to the culture tank 2 is regulated by a peristaltic pump 3 connected to a pH meter 4 which measures the acidity of the culture medium. The feed tank contains high concentrations of a toxic analogue of the amino acid which it is desired to overproduce. Entry of fresh medium into the culture tank causes poisoning of the yeast population, except those superproducing the amino acid in question, which will grow. As they grow the pH falls, causing further medium with higher concentrations of the toxic agent (and therefore the production of amino acids) to enter until the maximum concentration which the yeasts can tolerate is reached.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES9301641A ES2073357B1 (en) | 1993-07-21 | 1993-07-21 | PROCEDURE FOR THE SELECTION OF SUPER-PRODUCING YEAST OF AMINO ACIDS. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES9301641A ES2073357B1 (en) | 1993-07-21 | 1993-07-21 | PROCEDURE FOR THE SELECTION OF SUPER-PRODUCING YEAST OF AMINO ACIDS. |
Publications (2)
Publication Number | Publication Date |
---|---|
ES2073357A1 true ES2073357A1 (en) | 1995-08-01 |
ES2073357B1 ES2073357B1 (en) | 1996-03-01 |
Family
ID=8282632
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES9301641A Expired - Fee Related ES2073357B1 (en) | 1993-07-21 | 1993-07-21 | PROCEDURE FOR THE SELECTION OF SUPER-PRODUCING YEAST OF AMINO ACIDS. |
Country Status (1)
Country | Link |
---|---|
ES (1) | ES2073357B1 (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3472765A (en) * | 1968-06-10 | 1969-10-14 | Dorr Oliver Inc | Membrane separation in biological-reactor systems |
EP0065895A1 (en) * | 1981-05-08 | 1982-12-01 | L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | Method for producing microorganisms |
-
1993
- 1993-07-21 ES ES9301641A patent/ES2073357B1/en not_active Expired - Fee Related
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3472765A (en) * | 1968-06-10 | 1969-10-14 | Dorr Oliver Inc | Membrane separation in biological-reactor systems |
EP0065895A1 (en) * | 1981-05-08 | 1982-12-01 | L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | Method for producing microorganisms |
Also Published As
Publication number | Publication date |
---|---|
ES2073357B1 (en) | 1996-03-01 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
FD2A | Announcement of lapse in spain |
Effective date: 20141120 |