US4443487A
Expired / Lapsed
US
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Process for producing a spreadable emulsion
Assignee: Lever Brothers Co
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Filing: 1982-02-24
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Granted: 1984-04-17
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Expires: 2002-02-24
Abstract
Abstract A process for producing a spreadable emulsion starting from an oil-in-water (o/w) emulsion which on cooling is caused to destabilize and at least partially invert, almost spontaneously or under a mild shearing regime, preferably applying a temperature cycling, to obtain a spread having a consistency comparable to that of a soft margarine. The o/w emulsion comprises (i) an emulsifier system which promotes surface nucleation of fat crystals on cooling and growth of fat crystals through the oil/water interface and into the aqueous phase and (ii) a fat having at 10° C. a solid fat level higher than 40%.
Inventors
- 👤 Donald F. Darling
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 01:42
CPC Classifications
A; A23; A23D; A23D7/00; A23D7/02; C; C09; C09K; C09K23/00; C09K23/30; C09K23/34; C09K23/36
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
175 words
A process for producing an edible spreadable margarine-like emulsion, which comprises: (a) producing an oil-in/water emulsion which comprises (i) 20-80 wt.% of a dispersed fat having at 10° C. a solid fat content exceeding 40%, of which the average major dimension does not exceed 6 microns; (ii) 80-20 wt.% of an aqueous phase; and (iii) an effective amount of an emulsifier conducive to surface nucleation of fat crystals, deformation of the dispersed fat and/or growth of fat crystals through the oil/water interface into the aqueous phase; (b) simultaneously subjecting said emulsion to a mild shearing regime resulting from turbulent or non-turbulent flow conditions together with a cooling regime wherein said emulsion is cooled to a temperature ranging from 0° to 15° C. to allow fat crystallization to take place and at least partly achieve phase inversion; (c) applying a temperature cycling involving warming up the cooled emulsion to a temperature ranging from 25° to 45° C. at which partial melting occurs; and (d) cooling to a temperature at which the fat at least partly recrystallizes.
Claim 2
Dependent Claim
175 words
A process for producing an edible spreadable margarine-like emulsion, which comprises: (a) producing an oil-in/water emulsion which comprises (i) 20-80 wt.% of a dispersed fat having at 10° C. a solid fat content exceeding 40%, of which the average major dimension does not exceed 6 microns; (ii) 80-20 wt.% of an aqueous phase; and (iii) an effective amount of an emulsifier conducive to surface nucleation of fat crystals, deformation of the dispersed fat and/or growth of fat crystals through the oil/water interface into the aqueous phase; (b) simultaneously subjecting said emulsion to a mild shearing regime resulting from turbulent or non-turbulent flow conditions together with a cooling regime wherein said emulsion is cooled to a temperature ranging from 0° to 15° C. to allow fat crystallization to take place and at least partly achieve phase inversion; (c) applying a temperature cycling involving warming up the cooled emulsion to a temperature ranging from 25° to 45° C. at which partial melting occurs; and (d) cooling to a temperature at which the fat at least partly recrystallizes.
Claim 3
Dependent Claim
15 words
A process according to claim 1, in which 30 to 60 wt.% fat is dispersed.
Claim 4
Dependent Claim
21 words
A process according to claim 1, in which the average major dimension of the dispersed fat does not exceed 3 microns.
Claim 5
Dependent Claim
20 words
A process according to claim 1, in which the fat has at 10° C. a solid fat content exceeding 60%.
Claim 6
Dependent Claim
23 words
A process according to claim 1, in which the fat contains fat components having a melting point ranging from 30° to 70° C.
Claim 7
Dependent Claim
27 words
A process according to claim 5, in which the fat components consist of non-hydrogenated fats, hydrogenated fats and/or stearins obtained by fractionation of vegetable or animal fats.
Claim 8
Dependent Claim
65 words
A process according to claim 6, in which the fat components are selected from the group consisting of palm kernel fat of a melting point of 38° C., tristearin of a melting point of 72° C., tripalmitin of a melting point of 33° C., hardened palm oil of a melting point of 43° C. and hardened bean oil of a melting point of 38° C.
Claim 9
Dependent Claim
19 words
A process according to claim 1, in which an emulsifier having an HLB value higher than 9 is used.
Claim 10
Dependent Claim
22 words
A process according to claim 1, in which an emulsifier having an HLB value lower than 9 and a protein are used.
Claim 11
Dependent Claim
26 words
A process according to claim 1, in which the emulsifier is present in an amount sufficiently high to achieve 2-3 layers coverage at the oil/water interface.
Claim 12
Dependent Claim
28 words
A process according to claim 1, in which the emulsifier is selected from the group consisting of polyoxyethylene sorbitan monostearate, -palmitate, -laurate and polyglycerol esters of fatty acids.
Claim 13
Dependent Claim
28 words
A process according to claim 1, in which an emulsifier, selected from the group consisting of sorbitan monostearate, -mono- palmitate, -monolaurate and monoglycerides and a protein are used.
Claim 14
Dependent Claim
24 words
A process according to claim 1, in which in step (b) the emulsion is cooled to a temperature ranging from 5° to 10° C.
Claim 15
Dependent Claim
25 words
A process according to claim 1, in which in step (c) the emulsion is warmed up to a temperature ranging from 25° to 35° C.
Claim 16
Dependent Claim
22 words
A process according to claim 1, in which the mild shearing regime comprises gently agitating the emulsion by mixing or pouring it.
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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) | 1987-04-17 | 1987-10-17 | 1988-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-04-17 | 1991-10-17 | 1992-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-04-17 | 1995-10-17 | 1996-04-17 | $7700.00 | Window Closed / Lapsed |