DE664575C - Production of glycerine by fermentation technology - Google Patents
Production of glycerine by fermentation technologyInfo
- Publication number
- DE664575C DE664575C DEN40037D DEN0040037D DE664575C DE 664575 C DE664575 C DE 664575C DE N40037 D DEN40037 D DE N40037D DE N0040037 D DEN0040037 D DE N0040037D DE 664575 C DE664575 C DE 664575C
- Authority
- DE
- Germany
- Prior art keywords
- production
- glycerine
- solutions
- alkaline
- fermentation technology
- 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.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12P—FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
- C12P7/00—Preparation of oxygen-containing organic compounds
- C12P7/02—Preparation of oxygen-containing organic compounds containing a hydroxy group
- C12P7/04—Preparation of oxygen-containing organic compounds containing a hydroxy group acyclic
- C12P7/18—Preparation of oxygen-containing organic compounds containing a hydroxy group acyclic polyhydric
- C12P7/20—Glycerol
Landscapes
- Organic Chemistry (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Zoology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Microbiology (AREA)
- General Chemical & Material Sciences (AREA)
- Biotechnology (AREA)
- Health & Medical Sciences (AREA)
- Biochemistry (AREA)
- Bioinformatics & Cheminformatics (AREA)
- General Engineering & Computer Science (AREA)
- General Health & Medical Sciences (AREA)
- Genetics & Genomics (AREA)
- Preparation Of Compounds By Using Micro-Organisms (AREA)
Description
Der Erfinder hat beantragt, nicht genannt zu werden. Die Gewinnung von Glycerin durch Vergärung alkalischer Zuckerlösungen ist bekannt. Praktisch verwendet man meistens Natriumsulfit zum Abfangen des als Zwischenprodukt gebildeten Aldehyds. Gärungen in alkalischen, sulfitfreien Lösungen, bei denen es darauf ankommt, die als Zwischenprodukt gebildete Essigsäure abzufangen, haben bisher in der Praxis nur unbefriedigende Ausbeuten ergeben.The inventor has requested not to be named. The extraction of glycerine by fermentation of alkaline sugar solutions is known. Used in practice one usually uses sodium sulfite to scavenge the aldehyde formed as an intermediate. Fermentations in alkaline, sulphite-free solutions, where it depends on the To intercept acetic acid formed as an intermediate product, have hitherto been used in practice only give unsatisfactory yields.
Es wurde nun gefunden, daß man die Glycerinausbeute in alkalischen Lösungen sehr weitgehend dadurch erhöhen kann, daß man den osmotischen Druck der Gärlösungen mit Hilfe von Neutralsalzen, die an der Reaktion. nicht beteiligt sind, heraufsetzt. Es ist bereits aus dem Patent 343321 bekannt, daß man die Ausbeute in neutralen und sauren Lösungen durch Zusatz von Neutralsalzen. erhöhen kann. Für stark alkalische Lösungen wird ausdrücklich angegeben, daß die Methode wegen Schädigung der Hefe nicht angewendet werden kann. Umfangreiche Versuche haben nun ergeben, daß man in Lösungen, die stark alkalisch sind, die Ausbeute sehr wesentlich steigern kann, wenn man größere Mengen von Neutralsalzen zusetzt. Überraschenderweise haben sich zu diesem Zwecke die in der Literatur als Zusatz zu neutralen und sauren Lösungen angegebenen Neutralsalze, z. B. Ferrösulfat, Aluminiumsulfat usw., nicht bewährt; viele davon fallen ja schon in alkalischen Lösungen aus. Eine vorzügliche Ausbeute kann man aber erhalten, wenn man den alkalischen Lösungen Kochsalz, mindestens 3 0;'o, zusetzt, welches die Lebensfähigkeit der Hefe nicht herabsetzt und dessen Verwendung für die Glyceringärung bisher nicht bekannt war. Beispiel Eine Lösung, welche je Liter enthält: Zoo g Zucker, 50g Kochsalz, 2o g Natriumbicarbonat, i g Ammoniumsulfat, i g Magnesiumsulfat wird mit i o g Hefe versetzt und bei 37° der Gärung überlassen. Den pH-Wert hält man während der Gärung auf etwa 7,2 bis 7, 5, und zwar dadurch, da.ß die gebildete Kohlensäure durch Lüften oder Rühren bis zu dem gewünschten pH-Wert ausgetrieben wird. Man erhält auf diese Weise mindestens 25% Ausbeute an Glycerin, während sich ohne Kochsalz nur ein Bruchteil der angegebenen Ausbeute erzielen läßt.It has now been found that the glycerol yield in alkaline Solutions can very largely increase that the osmotic pressure of the Fermentation solutions with the help of neutral salts that participate in the reaction. are not involved, raises. It is already known from the patent 343321 that one can reduce the yield in neutral and acidic solutions by adding neutral salts. can increase. For strongly alkaline solutions it is expressly stated that the method because of damage the yeast cannot be used. Extensive tests have now shown that you increase the yield very substantially in solutions that are strongly alkaline can if you add larger amounts of neutral salts. Surprisingly, have for this purpose that in the literature as an additive to neutral and acidic solutions specified neutral salts, e.g. B. ferrous sulfate, aluminum sulfate, etc., not proven; many of them precipitate in alkaline solutions. An excellent yield but you can get it if you add table salt to the alkaline solutions, at least 3 0; 'o, adds, which does not reduce the viability of the yeast and its Use for glycerol fermentation was previously unknown. Example a solution, which per liter contains: zoo g sugar, 50g table salt, 20 g sodium bicarbonate, i g Ammonium sulphate, i g magnesium sulphate are mixed with i o g yeast and at 37 ° the Let fermentation. The pH value is kept at around 7.2 to 7.5 during fermentation, namely by the fact that the carbonic acid formed by ventilating or stirring up to the desired pH is driven out. In this way you get at least 25% yield of glycerol, while without table salt only a fraction of the specified Can achieve yield.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEN40037D DE664575C (en) | 1936-11-14 | 1936-11-14 | Production of glycerine by fermentation technology |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEN40037D DE664575C (en) | 1936-11-14 | 1936-11-14 | Production of glycerine by fermentation technology |
Publications (1)
Publication Number | Publication Date |
---|---|
DE664575C true DE664575C (en) | 1938-08-29 |
Family
ID=7348116
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEN40037D Expired DE664575C (en) | 1936-11-14 | 1936-11-14 | Production of glycerine by fermentation technology |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE664575C (en) |
-
1936
- 1936-11-14 DE DEN40037D patent/DE664575C/en not_active Expired
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