US4094646A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rapid method of assaying collagen in meat and meat products
Assignee: Baltimore Spice Co
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Filing: 1977-06-02
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Granted: 1978-06-13
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Expires: 1997-06-02
Abstract
Abstract A rapid method for assaying collagen in meat and meat products. A sample of the material being tested is subjected to a controlled, incomplete hydrolysis of the amino acids with an acidified solution of stannous chloride in such a way that all of the tryptophan is completely destroyed but only a portion of the hydroxyproline is hydrolyzed. The percent collagen is correlated with the percent hydroxyproline, colorimetrically determined.
Inventors
- 👤 David L. Stern
- 👤 Daniel B. Samchuck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:07
CPC Classifications
G; G01; G01N; G01N33/00; G01N33/48; G01N33/50; G01N33/52; G01N33/02; G01N33/12; Y; Y10; Y10T; Y10T436/00; Y10T436/14; Y10T436/145555
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
61 words
A rapid method for assaying collagen in a simple of meat or meat products comprising hydrolyzing the amino acids in said sample under conditions such that all of the tryptophan therein is destroyed and only a portion of the hydroxyproline therein is hydrolyzed and then determining the percent collagen by colorimetrically reading the present hydroxyproline which has been hydrolyzed and extracted.
Claim 2
Dependent Claim
61 words
A rapid method for assaying collagen in a simple of meat or meat products comprising hydrolyzing the amino acids in said sample under conditions such that all of the tryptophan therein is destroyed and only a portion of the hydroxyproline therein is hydrolyzed and then determining the percent collagen by colorimetrically reading the present hydroxyproline which has been hydrolyzed and extracted.
Claim 3
Dependent Claim
20 words
The method of claim 1 wherein the hydrolysis is effected in an acidified solution of tin chloride (SnCl 2 ).
Claim 4
Dependent Claim
28 words
The method of claim 2 wherein the hydrolysis is effected by boiling said sample for between 20 minutes and 90 minutes in said acidified solution of stannous chloride.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-06-12 | 1981-12-12 | 1982-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-06-12 | 1985-12-12 | 1986-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-06-12 | 1989-12-12 | 1990-06-13 | $7700.00 | Window Closed / Lapsed |