US4178214A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Culture medium for cultivation of fodder yeasts
Assignee: Individual
•
Filing: 1977-09-08
•
Granted: 1979-12-11
•
Expires: 1997-09-08
Abstract
Abstract Increased yield of fodder yeasts is obtained with a culture medium containing peat hydrolysate, ligneous waste hydrolysate and sources of nitrogen, phosphorus and potassium. The peat hydrolysate is obtained by hydrolysis of peat with sulphuric acid and the hydrolysate has a pH of 4.0 to 4.4.
Inventors
- 👤 Zinaida P. Shishkova
- 👤 Arvid Y. Kalninsh
- 👤 Juris P. Gailitis
- 👤 Uldis Y. Shmit
- 👤 Nikolai A. Vedernikov
- 👤 Valter P. Krastinsh
- 👤 Damir A. Kalinkin
- 👤 Viktor R. Vaax
- 👤 Maria A. Zinina
- 👤 Vasily D. Belyaev
- 👤 Nikolai S. Maximenko
- 👤 Yakov V. Epshtein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:27
CPC Classifications
C; C12; C12N; C12N1/00; C12N1/22
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
98 words
A liquid culture medium for cultivation of fodder yeasts which provide a source of proteins, vitamins and minerals in the diet of animals and birds, said liquid culture medium containing the following components in % by weight: hydrolysate of ligneous wastes other than peat with pH=4.0-4.4: 48-97 peat hydrolysate obtained by hydrolysis of peat with sulphuric acid and having a pH=4.0-4.4: 0.1-50 nitrogen from a source other than said hydrolysates: 0.02-0.08 phosphorus measured as P 2 O 5 from a source other than said hydrolysates: 0.03-0.12 potassium from a source other than said hydrolysates: 0.016-0.064 water: the balance.
Claim 2
Dependent Claim
98 words
A liquid culture medium for cultivation of fodder yeasts which provide a source of proteins, vitamins and minerals in the diet of animals and birds, said liquid culture medium containing the following components in % by weight: hydrolysate of ligneous wastes other than peat with pH=4.0-4.4: 48-97 peat hydrolysate obtained by hydrolysis of peat with sulphuric acid and having a pH=4.0-4.4: 0.1-50 nitrogen from a source other than said hydrolysates: 0.02-0.08 phosphorus measured as P 2 O 5 from a source other than said hydrolysates: 0.03-0.12 potassium from a source other than said hydrolysates: 0.016-0.064 water: the balance.
Claim 3
Dependent Claim
99 words
A liquid culture medium as claimed in claim 1, containing said peat hydrolysate in the form of a concentrate containing 30 to 60% by weight of dry substance, with the following proportions of components, in % by weight: hydrolysate of ligneous wastes other than peat with pH=4.0-4.4: 90-97 peat hydrolysate obtained by hydrolysis of peat with sulfuric acid and having a pH=4.0-4.4: 0.1-5 nitrogen from a source other than said hydrolysates: 0.02-0.08 phosphorous measured as P 2 O 5 from a source other than said hydrolysates: 0.03-0.12 potassium from a source other than said hydrolysates: 0.016-0.064 water: in balance.
Claim 4
Dependent Claim
21 words
Liquid culture medium according to claim 1 wherein said source of nitrogen is an aqueous solution of ammonia or ammonium sulphate.
Claim 5
Dependent Claim
18 words
Liquid culture medium according to claim 3 wherein said source of phosphorus is ammonium phosphate or calcium superphosphate.
Claim 6
Dependent Claim
17 words
Liquid culture medium according to claim 4 wherein said source of potassium is potassium sulphate of chloride.
References Cited (Backward Citations)
US1515016A
Cited
US2928740A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-12-10 | 1983-06-11 | 1983-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-12-10 | 1987-06-11 | 1987-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-12-10 | 1991-06-11 | 1991-12-11 | $7700.00 | Window Closed / Lapsed |