Patent US4011348A successfully refreshed from Google Patents.
US4011348A
Expired / Lapsed
US
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Process for inhibiting browning of fruit
Assignee: Diamond Fruit Growers Inc
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Filing: 1974-11-06
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Granted: 1977-03-08
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Expires: 1994-11-06
Abstract
Abstract Raw fruits and vegetables are treated with an aqueous solution having a pH between about 4 and 7.5 and containing a selected ascorbate ion concentration in order to maintain desirable color, texture, odor and flavor characteristics when the fruit and vegetables are stored at aerobic refrigeration conditions for extended periods.
Inventors
- 👤 Ray W. Farrier
- 👤 Roland B. Leavens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:18
CPC Classifications
A; A23; A23B; A23B7/00; A23B7/10; A23B7/16
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
100 words
A process for preservation of plant material subject to browning which comprises; applying to the surface of said plant material an aqueous solution having a pH of between 4 and 7.5 and consisting essentially of a material selected from the class consisting of sodium ascorbate and a mixture of sodium ascorbate and ascorbic acid so as to provide ascorbate ion in a concentration of from about 3.5 to about 10 weight percent of the solution, removing said plant material from said solution and storing said plant material under aerobic conditions at a temperature between about 32° F. and 40° F.
Claim 2
Dependent Claim
100 words
A process for preservation of plant material subject to browning which comprises; applying to the surface of said plant material an aqueous solution having a pH of between 4 and 7.5 and consisting essentially of a material selected from the class consisting of sodium ascorbate and a mixture of sodium ascorbate and ascorbic acid so as to provide ascorbate ion in a concentration of from about 3.5 to about 10 weight percent of the solution, removing said plant material from said solution and storing said plant material under aerobic conditions at a temperature between about 32° F. and 40° F.
Claim 3
Dependent Claim
11 words
The process of claim 1 wherein said plant material is apples.
Claim 4
Dependent Claim
17 words
The process of claim 1 wherein said solution is prepared from sodium ascorbate, ascorbic acid and water.
Claim 5
Dependent Claim
20 words
The process of claim 2 wherein said solution contains 5.5 weight percent ascorbate ion concentration and a pH of 5.
Claim 6
Dependent Claim
22 words
The process of claim 2 wherein said solution has a 3.5 weight percent ascorbate ion concentration and has a pH of 7.5.
Claim 7
Dependent Claim
28 words
The process of claim 1 wherein said plant material is contacted with said solution for a period of time of from about one-half minute to about two minutes.
Claim 8
Dependent Claim
15 words
The process of claim 1 wherein said solution contains about 0.25 weight percent sodium chloride.
Claim 9
Dependent Claim
11 words
The process of claim 1 wherein said plant material is peaches.
Claim 10
Dependent Claim
11 words
The process of claim 1 wherein said plant material is carrots.
References Cited (Backward Citations)
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Cited
US2475838A
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US2583686A
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US2628905A
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US2895836A
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US3043699A
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US3594187A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-03-07 | 1980-09-06 | 1981-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-03-07 | 1984-09-06 | 1985-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-03-07 | 1988-09-06 | 1989-03-08 | $7700.00 | Window Closed / Lapsed |