US4355109A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Microbiological production of novel biosurfactants
Assignee: Individual
•
Filing: 1980-04-22
•
Granted: 1982-10-19
•
Expires: 2000-04-22
Abstract
Abstract Newly isolated microbes of the genera Arthrobacter-Corynebacterium-Nocardia as represented by Corynebacteria Salvinicum strain SFC, produce substantial quantities of materials having outstanding surfactant properties, when grown on carbon supplying substrates under fermentation conditions.
Inventors
- 👤 James E. Zajic
- 👤 Donald F. Gerson
- 👤 Richard K. Gerson
- 👤 Chandrakant J. Panchal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 11:37
CPC Classifications
C; C12; C12P; C12P1/00; C12P1/04; B; B03; B03D; B03D1/00; B03D1/001; B03D1/004; C12N; C12N1/00; C12N1/20; C12N1/205; C12R; C12R2001/00; C12R2001/01; C12R2001/06; C12R2001/15; C12R2001/365; Y; Y10; Y10S; Y10S435/00; Y10S435/8215; Y10S435/822; Y10S435/843
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
88 words
A process for microbiological production of surfactant materials, which comprises cultivating by aerobic fermentation, in a growth promoting medium and under growth promoting conditions, and on a carbon-containing substrate, the microbial strain Corynebacterium Salvinicum strain SFC, said microbial strain being characterised by ability to metabolize the waxy protective coating of the plant cuticles of Salvinica water plant under normal growth conditions for the microbial strain, to produce a surfactant material of microbiological origin in said fermentation medium, and recovering the surfactant material so produced from said fermentation medium.
Claim 2
Dependent Claim
88 words
A process for microbiological production of surfactant materials, which comprises cultivating by aerobic fermentation, in a growth promoting medium and under growth promoting conditions, and on a carbon-containing substrate, the microbial strain Corynebacterium Salvinicum strain SFC, said microbial strain being characterised by ability to metabolize the waxy protective coating of the plant cuticles of Salvinica water plant under normal growth conditions for the microbial strain, to produce a surfactant material of microbiological origin in said fermentation medium, and recovering the surfactant material so produced from said fermentation medium.
Claim 3
Dependent Claim
28 words
The process according to claim 1 wherein the fermentation broth includes a mixture of isonicotinic acid hydrazide and Tween 80, in effective amounts to increase the surfactant production.
Claim 4
Dependent Claim
23 words
The process according to claim 1 wherein the enzyme lysozyme is added to the cellular material produced during fermentation, to increase surfactant concentration.
Claim 5
Dependent Claim
12 words
The process according to claim 1 wherein the fermentation broth includes diethoxymethane.
Claim 6
Dependent Claim
17 words
The novel surfactant material of lipid-like structure possessing emulsification properties, resulting from the process of claim 1.
Claim 7
Dependent Claim
25 words
The process of claim 1 wherein the carbon-containing substrate is an aliphatic liquid hydrocarbon having from about 6 to about 18 carbon atoms per molecule.
References Cited (Backward Citations)
US3709783A
Cited
US3997398A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-10-18 | 1986-04-19 | 1986-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-10-18 | 1990-04-19 | 1990-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-10-18 | 1994-04-19 | 1994-10-19 | $7700.00 | Window Closed / Lapsed |