US4112122A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preservation process
Assignee: BP Chemicals Ltd
•
Filing: 1977-05-04
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Granted: 1978-09-05
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Expires: 1997-05-04
Abstract
Abstract Foodstuffs, especially bread, can be preserved against the growth of microorganisms such as mould growth and rope formation by adding to the foodstuffs an acid propionate salt.
Inventors
- 👤 Dennis James George Long
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:55
CPC Classifications
A; A23; A23B; A23B2/00; A23B2/70; A23B2/725; A23B2/729; A21; A21D; A21D2/00; A21D2/08; A21D2/14; A21D2/145; A23B4/00; A23B4/14; A23B4/18; A23B4/20; Y; Y10; Y10S; Y10S426/00; Y10S426/801
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
80 words
A method of inhibiting the growth of micro-organisms in foodstuffs susceptible thereto comprising incorporating therein an acid salt of propionic acid and at least one cation selected from the group consisting of ammonium, sodium, potassium, calcium and magnesium such that the ratio of the acid to the cation in the salt is in the range of 2:1 to 4:1 on a chemical equivalent basis in an amount of between 0.01 and 1.0% by the dry weight of the said foodstuff.
Claim 2
Independent Claim
80 words
A method of inhibiting the growth of micro-organisms in foodstuffs susceptible thereto comprising incorporating therein an acid salt of propionic acid and at least one cation selected from the group consisting of ammonium, sodium, potassium, calcium and magnesium such that the ratio of the acid to the cation in the salt is in the range of 2:1 to 4:1 on a chemical equivalent basis in an amount of between 0.01 and 1.0% by the dry weight of the said foodstuff.
Claim 3
Dependent Claim
38 words
A method according to claim 1 comprising inhibiting rope formation and mould growth in bread incorporating in the bread an acid propionate salt in an amount of between 0.01 and 0.4% by the dry weight of the flour.
Claim 4
Dependent Claim
17 words
A method according to claim 2 wherein the bread is an enzyme leavened or chemically aerated bread.
Claim 5
Dependent Claim
24 words
A method according to claim 1 wherein the foodstuff is selected from cakes, pastry mixes, biscuits, flours, starches, sausages, meat pies and baby foods.
Claim 6
Dependent Claim
27 words
A method according to claim 1 wherein the acid propionate salt is selected from sodium dipropionate, ammonium dipropionate, potassium dipropionate, calcium tetra propionate and magnesium tetra propionate.
Claim 7
Dependent Claim
17 words
A method according to claim 1 wherein the acid propionate salt is added as an aqueous solution.
Claim 8
Dependent Claim
29 words
A process according to claim 2 wherein the acid propionate salt is added to the water used in the making of dough from flour in the bread making process.
References Cited (Backward Citations)
US2154449A
Cited
US3057731A
Cited
US3008986A
Cited
US3485638A
Cited
US3600198A
Cited
US3899594A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-09-04 | 1982-03-06 | 1982-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-09-04 | 1986-03-06 | 1986-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-09-04 | 1990-03-06 | 1990-09-05 | $7700.00 | Window Closed / Lapsed |