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US4443487A Expired / Lapsed US ⏱️ 0.0 years remaining

Process for producing a spreadable emulsion

Assignee: Lever Brothers Co
•
Filing: 1982-02-24
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Granted: 1984-04-17
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Expires: 2002-02-24
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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.

References Cited (Backward Citations)

US2919196A Cited
US2921855A Cited
US2973269A Cited
US3939282A Cited
US4146652A Cited
US4273795A Cited
US4362758A Cited

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

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