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US5036011A Expired / Lapsed US ⏱️ 0.0 years remaining

Novel Aureobasidium sp. microorganisms and method for obtaining the same, and method for preparing erythritol with the same

Assignee: Kowa Co Ltd
•
Filing: 1990-04-05
•
Granted: 1991-07-30
•
Expires: 2010-04-05
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Abstract

Abstract Biologically pure culture of Aureobasidium sp. SN-124A strain (FERM BP-1429) and artificial mutants thereof according to the present invention show the properties of forming and accumulating erythritol in a culture solution, when aerobically cultured on a liquid culture medium containing an assimilable carbon source and an assimilable nitrogen source, and are useful for the preparation of erythritol by fermentation of sugars. A method for preparing erythritol by fermentation of sugars according to the present invention comprises inoculating microorganism selected from the group consisting of Aureobasidium sp. SN-124A strain (FERM BP-1429) and mutants thereof on a liquid culture medium of pH 4 to 9 containing an assimilable carbon source and an assimilable nitrogen source, and aerobically culturing them at a temperature of 30° to 38° C. to form and accumulate erythritol in said culture medium for collection.

Inventors

  • 👤 Takashi Sasaki
  • 👤 Takafumi Kasumi
  • 👤 Naoya Kubo
  • 👤 Keiji Kainuma
  • 👤 Katsuo Wako
  • 👤 Hiroaki Ishizuka
  • 👤 Gaku Kawaguchi
  • 👤 Tsunero Oda

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-04 17:54
CPC Classifications
C; C12; C12N; C12N1/00; C12N1/14; C12N1/145; C12N1/02; C12P; C12P7/00; C12P7/02; C12P7/04; C12P7/18; C12R; C12R2001/00; C12R2001/645; Y; Y10; Y10S; Y10S435/00; Y10S435/8215; Y10S435/911

Claims Analysis

Total Claims: 6
Claim 1
Independent Claim 56 words
A biologically pure culture of Aureobasidium sp. SN-124A strain (FERM BP-1429) and artificial mutants thereof, which have the properties of forming and accumulating erythritol in a culture solution when aerobically cultured on a liquid culture medium containing an assimilable carbon source and an assimilable nitrogen source, and are capable of preparing erythritol by fermentation of sugars.
Claim 2
Dependent Claim 56 words
A biologically pure culture of Aureobasidium sp. SN-124A strain (FERM BP-1429) and artificial mutants thereof, which have the properties of forming and accumulating erythritol in a culture solution when aerobically cultured on a liquid culture medium containing an assimilable carbon source and an assimilable nitrogen source, and are capable of preparing erythritol by fermentation of sugars.
Claim 3
Dependent Claim 74 words
A biologically pure culture strain of an artificial mutant of Aureobasidium sp. SN-124A strain (BP-1429), which has the properties of forming and accumulating erythritol in a culture solution without any substantial occurrence of foams due to fermentation when aerobically cultured on a liquid medium containing an assimilable carbon source in an amount of at least 40% and an assimilable nitrogen source, produce hydrophilic cells, and is capable of preparing erythritol by fermentation of sugars.
Claim 4
Dependent Claim 74 words
A biologically pure culture strain of an artificial mutant of Aureobasidium sp. SN-124A strain (BP-1429), which has the properties of forming and accumulating erythritol in a culture solution without any substantial occurrence of foams due to fermentation when aerobically cultured on a liquid medium containing an assimilable carbon source in an amount of at least 40% and an assimilable nitrogen source, produce hydrophilic cells, and is capable of preparing erythritol by fermentation of sugars.
Claim 5
Dependent Claim 25 words
The biologically pure culture strain as defined in claim 1, in which said artificial mutant of Aureobasidium sp. SN-124A strain is Aureobasidium sp. SN-G42 strain
Claim 6
Dependent Claim 27 words
The biological pure culture strain as defined in claim 3, in which said artificial mutant of Aureobasidium sp. SN-124A strain is Aureobasidium sp. SN-γ96 strain (FERM BP-1431).

References Cited (Backward Citations)

GB824184A Cited
US2986495A Cited
US3756917A Cited
JPS49118889A Cited
EP0136804A2 Cited
EP0136802A2 Cited
EP0136805A2 Cited
JPS6431082A Cited
JPS6431091A Cited
JPS6431080A Cited
JPH0296090A Cited
JPH073546A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1994-07-29 1995-01-28 1995-07-30 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1998-07-29 1999-01-28 1999-07-30 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2002-07-29 2003-01-28 2003-07-30 $7700.00 Window Closed / Lapsed

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