US3906112A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Extraction of carotenoid pigment from shrimp processing waste
Assignee: Bioproducts Inc
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Filing: 1974-09-16
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Granted: 1975-09-16
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Expires: 1994-09-16
Abstract
Abstract Extracting a red carotenoid pigment from processing waste which comprises a milky-pink watery mixture containing dissolved and finely divided material from the waste. To this is added a small quantity of a triglyceride oil, such as soybean oil. The oil is dispersed in the watery mixture with the aid of turbulent mixing, after which the dispersion is heated and the oil fraction recovered by centrifugal extraction. The resulting dark-red oil is suitable for incorporation in commercially produced salmon and trout feed to improve the fishes'' flesh and skin coloration.
Inventors
- 👤 Lyle K Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 15:57
CPC Classifications
C; C07; C07C; C07C403/00; C07C403/24; A; A23; A23L; A23L5/00; A23L5/40; A23L5/42; A23L5/43; A23L5/44
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
65 words
A METHOD FOR PREPARING A CAROTENOID PIGMENT EXTRACT OF CRUSTACEAN SHELL WASTE, COMPRISING PREPARING FROM SAID WASTE A WATERY MIXTURE COMPRISING FINELY DIVIDED PORTIONS OF SAID WASTE, WHICH PORTIONS CONTAIN SAID PIGMENT, INCORPORATING AN OIL IN SAID MIXTURE TO PROUDCE AN AQUEOUS DISPERSION CONTAINING SAID OIL AS A DISPERSED PHASE, AND SEPARATING FROM SAID DISPERSION THE OIL PHASE THEREOF, WHICH PHASE CONTAINS THE PIGMENT EXTRACT.
Claim 2
Independent Claim
65 words
A METHOD FOR PREPARING A CAROTENOID PIGMENT EXTRACT OF CRUSTACEAN SHELL WASTE, COMPRISING PREPARING FROM SAID WASTE A WATERY MIXTURE COMPRISING FINELY DIVIDED PORTIONS OF SAID WASTE, WHICH PORTIONS CONTAIN SAID PIGMENT, INCORPORATING AN OIL IN SAID MIXTURE TO PROUDCE AN AQUEOUS DISPERSION CONTAINING SAID OIL AS A DISPERSED PHASE, AND SEPARATING FROM SAID DISPERSION THE OIL PHASE THEREOF, WHICH PHASE CONTAINS THE PIGMENT EXTRACT.
Claim 3
Dependent Claim
36 words
The method of claim 1, wherein said preparing step comprises contacting crustacean shell waste with steam, pressing the waste to remove watery material associated therewith, and collecting the watery material, which material comprises said watery mixture.
Claim 4
Dependent Claim
49 words
The method of claim 1, wherein said preparing and incorporating steps comprise adding an oil to the crustacean shell waste, contacting the oil-containing waste with steam, then pressing the waste to remove watery material associated therewith, which watery material comprises a dispersion containing said oil as a dispersed phase.
Claim 5
Dependent Claim
13 words
The method of claim 1, wherein said separating is performed by centrifugal extraction.
Claim 6
Dependent Claim
22 words
The method of claim 1, wherein said crustacean shell waste comprises shrimp shell waste, and said pigment comprises the carotenoid pigment astaxanthin.
Claim 7
Dependent Claim
11 words
The method of claim 1, wherein said oil comprises a triglyceride.
Claim 8
Dependent Claim
10 words
The pigment extract produced by the method of claim 1.
Claim 9
Independent Claim
83 words
A method for preparing a carotenoid pigment extract of crustacean shell waste in a form suitable for feeding to fish, comprising preparing from said waste a watery mixture comprising finely divided portions of said waste which include said pigment, incorporating an edible oil in said mixture to produce an aqueous dispersion containing said oil as a dispersed phase, separating from said dispersion the oil phase thereof, which phase contains said pigment in solution, and incorporating the pigment-bearing oil in a fish food formulation.
Claim 10
Independent Claim
83 words
A method for preparing a carotenoid pigment extract of crustacean shell waste in a form suitable for feeding to fish, comprising preparing from said waste a watery mixture comprising finely divided portions of said waste which include said pigment, incorporating an edible oil in said mixture to produce an aqueous dispersion containing said oil as a dispersed phase, separating from said dispersion the oil phase thereof, which phase contains said pigment in solution, and incorporating the pigment-bearing oil in a fish food formulation.
Claim 11
Independent Claim
95 words
A method for preparing a carotenoid pigment extract of shrimp shell waste in a form suitable for feeding to fish of the genera Oncorhyneus, Trutta and Salmo, comprising preparing from said waste a watery mixture comprising finely divided portions of said waste which include said pigment, dispersing a triglyceride oil in said mixture to provide an aqueous dispersion containing said oil as a dispersed phase, separating from said dispersion the oil phase thereof which contains dissolved carotenoid pigment from said waste, and incorporating portions of said pigment-containing oil in a food formulation for said fish.
Claim 12
Independent Claim
95 words
A method for preparing a carotenoid pigment extract of shrimp shell waste in a form suitable for feeding to fish of the genera Oncorhyneus, Trutta and Salmo, comprising preparing from said waste a watery mixture comprising finely divided portions of said waste which include said pigment, dispersing a triglyceride oil in said mixture to provide an aqueous dispersion containing said oil as a dispersed phase, separating from said dispersion the oil phase thereof which contains dissolved carotenoid pigment from said waste, and incorporating portions of said pigment-containing oil in a food formulation for said fish.
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) | 1978-09-15 | 1979-03-17 | 1979-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-15 | 1983-03-17 | 1983-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-15 | 1987-03-17 | 1987-09-16 | $7700.00 | Window Closed / Lapsed |