US5021248A
Expired / Lapsed
US
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Hydrophobic protein microparticles and preparation thereof
Assignee: Bank of Montreal
•
Filing: 1989-09-01
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Granted: 1991-06-04
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Expires: 2009-09-01
Abstract
Abstract Water-dispersible microparticles of hydrophobic, water-insoluble, non-denatured protein, and method for preparing a suspension of these microparticles by the controlled precipitation of the protein, is described. The suspension can be used as a substitute for most dietary fats, or to encapsulate selected molecules. The water-insoluble proteins used in the process can be chemically or enzymatically modified to enhance the properties of the microparticles.
Inventors
- 👤 Leonard E. Stark
- 👤 Akiva T. Gross
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:46
CPC Classifications
A; A23; A23D; A23D7/00; A23D7/015; A23J; A23J3/00; A23J3/14; A23J3/18; A23P; A23P10/00; A23P10/30; Y; Y10; Y10S; Y10S426/00; Y10S426/804; Y10T; Y10T428/00; Y10T428/29; Y10T428/2982; Y10T428/2984
Claims Analysis
Total Claims: 48
Claim 1
Independent Claim
56 words
Microparticles consisting essentially of hydrophobic protein, said hydrophobic protein being water-insoluble in its non-denatured state, said microparticles having a generally spherical shape and a median particle size of less than about 200 microns and said microparticles being water-dispersible whereby they are freely dispersible in an aqueous medium to form a homogeneous non-aggregated suspension of said microparticles.
Claim 2
Dependent Claim
56 words
Microparticles consisting essentially of hydrophobic protein, said hydrophobic protein being water-insoluble in its non-denatured state, said microparticles having a generally spherical shape and a median particle size of less than about 200 microns and said microparticles being water-dispersible whereby they are freely dispersible in an aqueous medium to form a homogeneous non-aggregated suspension of said microparticles.
Claim 3
Dependent Claim
11 words
Microparticles of claim 1 wherein the hydrophobic protein comprises a prolamine.
Claim 4
Dependent Claim
24 words
Microparticles of claim 2 wherein the prolamine is derived from a grain selected from the group consisting of corn, wheat, barley, rice and sorghum.
Claim 5
Dependent Claim
9 words
Microparticles of claim 3 wherein the prolamine comprises zein.
Claim 6
Dependent Claim
15 words
Microparticles of claim 1 having a median particle size of less than about 4 microns.
Claim 7
Dependent Claim
15 words
Microparticles of claim 4 having a median particle size of less than about 4 microns.
Claim 8
Dependent Claim
12 words
Microparticles of claim 6 wherein the hydrophobic protein has been chemically modified.
Claim 9
Dependent Claim
19 words
Microparticles of claim 7 wherein the hydrophobic protein has been chemically modified by treatment with an acid or base.
Claim 10
Dependent Claim
12 words
Microparticles of claim 6 wherein the hydrophobic protein has been enzymatically modified.
Claim 11
Dependent Claim
14 words
A stable aqueous dispersion comprising microparticles of claim 1 suspended in an aqueous medium.
Claim 12
Dependent Claim
25 words
A stable aqueous dispersion of claim 10 wherein the aqueous medium comprises water or an aqueous alcohol solution containing less than 40%, by weight, alcohol.
Claim 13
Dependent Claim
19 words
A stable aqueous dispersion of claim 10 wherein the aqueous medium comprises an aqueous solution of ethanol or 2-propanol.
Claim 14
Dependent Claim
8 words
A dry powder comprising microparticles of claim 11.
Claim 15
Dependent Claim
14 words
A stable aqueous dispersion comprising rehydrated powder of claim 13 in an aqueous medium.
Claim 16
Dependent Claim
15 words
A stable aqueous dispersion of claim 14 containing up to about 40%, by weight, microparticles.
Claim 17
Dependent Claim
20 words
A stable aqueous dispersion of claim 10 additionally including a dispersion stabilizing agent comprising a gum or surface active agent.
Claim 18
Dependent Claim
55 words
Microparticles consisting essentially of prolamine, which prolamine is water insoluble in its non-denatured state, said microparticles having a generally spherical shape and a median particle size of less than about 4 microns and said microparticles being water-dispersible whereby they are freely dispersible in an aqueous medium to form a homogeneous non-aggregated suspension of said microparticles.
Claim 19
Dependent Claim
55 words
Microparticles consisting essentially of prolamine, which prolamine is water insoluble in its non-denatured state, said microparticles having a generally spherical shape and a median particle size of less than about 4 microns and said microparticles being water-dispersible whereby they are freely dispersible in an aqueous medium to form a homogeneous non-aggregated suspension of said microparticles.
Claim 20
Dependent Claim
9 words
Microparticles of claim 17 wherein said prolamine comprises zein.
Claim 21
Dependent Claim
53 words
A fat-substitute comprising a stable aqueous dispersion of microparticles of hydrophobic protein, said hydrophobic protein water-insoluble in its non-denatured state said microparticles being a generally spherical shape, and having a substantially uniform particle size with a median particle size of less than about 4 microns, said fat-substitute having organoleptic properties of a fat.
Claim 22
Dependent Claim
53 words
A fat-substitute comprising a stable aqueous dispersion of microparticles of hydrophobic protein, said hydrophobic protein water-insoluble in its non-denatured state said microparticles being a generally spherical shape, and having a substantially uniform particle size with a median particle size of less than about 4 microns, said fat-substitute having organoleptic properties of a fat.
Claim 23
Dependent Claim
12 words
A fat-substitute of claim 19 wherein said hydrophobic protein comprises a prolamine.
Claim 24
Dependent Claim
25 words
A fat-substitute of claim 20 wherein said prolamine is derived from a grain selected from the group consisting of corn, wheat, barley, rice and sorghum.
Claim 25
Dependent Claim
11 words
A fat-substitute of claim 20 wherein said hydrophobic protein comprises zein.
Claim 26
Dependent Claim
13 words
A fat-substitute of claim 22 containing up to about 40%, by weight, zein.
Claim 27
Dependent Claim
48 words
A fat-substitute comprising microparticles of a prolamine dispersed in an aqueous medium, which prolamine is water insoluble in its non-denatured state, said microparticles having a generally spherical shape and a median particle size of less than about 4 microns and said fat-substitute having organoleptic properties of a fat.
Claim 28
Dependent Claim
48 words
A fat-substitute comprising microparticles of a prolamine dispersed in an aqueous medium, which prolamine is water insoluble in its non-denatured state, said microparticles having a generally spherical shape and a median particle size of less than about 4 microns and said fat-substitute having organoleptic properties of a fat.
Claim 29
Dependent Claim
10 words
A fat-substitute of claim 24 wherein said prolamine comprises zein.
Claim 30
Dependent Claim
38 words
A fat-substitute comprising spherical microparticles of zein dispersed in an aqueous medium containing a stabilizing agent, said zein microparticles having a median diameter of less than about 4 microns and said fat-substitute having organoleptic properties of a fat.
Claim 31
Dependent Claim
38 words
A fat-substitute comprising spherical microparticles of zein dispersed in an aqueous medium containing a stabilizing agent, said zein microparticles having a median diameter of less than about 4 microns and said fat-substitute having organoleptic properties of a fat.
Claim 32
Dependent Claim
9 words
A food product containing a fat-substitute of claim 19.
Claim 33
Dependent Claim
9 words
A food product containing a fat-substitute of claim 23.
Claim 34
Dependent Claim
18 words
A food product having all or a portion of its fat replaced with a fat-substitute of claim 26.
Claim 35
Dependent Claim
75 words
A food product normally containing fat in which all or a portion of fat has been replaced by a fat-substitute comprising a stable aqueous dispersion of microparticles of hydrophobic protein, said hydrophobic protein being water-insoluble in its non-denatured state, said microparticles having a generally spherical shape and a substantially uniform particle size with a median particle size of less than about 4 microns, said fat-substitute having organoleptic properties of a fat in said food product.
Claim 36
Dependent Claim
75 words
A food product normally containing fat in which all or a portion of fat has been replaced by a fat-substitute comprising a stable aqueous dispersion of microparticles of hydrophobic protein, said hydrophobic protein being water-insoluble in its non-denatured state, said microparticles having a generally spherical shape and a substantially uniform particle size with a median particle size of less than about 4 microns, said fat-substitute having organoleptic properties of a fat in said food product.
Claim 37
Dependent Claim
13 words
A food product of claim 30 wherein said hydrophobic protein comprises a prolamine.
Claim 38
Dependent Claim
26 words
A food product of claim 31 wherein said prolamine is derived from a grain selected from the group consisting of corn, wheat, barley, rice and sorghum.
Claim 39
Dependent Claim
12 words
A food product of claim 30 wherein said hydrophobic protein comprises zein.
Claim 40
Dependent Claim
20 words
A food product of claim 33 wherein the fat-substitute has a fat equivalence of from about 0.1 to about 0.5.
Claim 41
Dependent Claim
9 words
A food product of claim 30 comprising a frosting.
Claim 42
Dependent Claim
10 words
A food product of claim 30 comprising a salad dressing.
Claim 43
Dependent Claim
10 words
A food product of claim 30 comprising a frozen dessert.
Claim 44
Dependent Claim
11 words
A food product of claim 30 comprising a margarine type spread.
Claim 45
Dependent Claim
11 words
A food product of claim 30 comprising a sour cream product.
Claim 46
Dependent Claim
11 words
A food product of claim 30 comprising a low-fat milk-based beverage.
Claim 47
Dependent Claim
72 words
A food product normally containing fat in which all or a portion of fat has been replaced by a fat-substitute comprising a stable aqueous dispersion of generally spherically shaped microparticles of zein having a substantially uniform particle size with a median particle size of less than about 4 microns and a stabilizing agent comprising a gum or surface active agent, said fat-substitute having organoleptic properties of a fat in said food product.
Claim 48
Dependent Claim
72 words
A food product normally containing fat in which all or a portion of fat has been replaced by a fat-substitute comprising a stable aqueous dispersion of generally spherically shaped microparticles of zein having a substantially uniform particle size with a median particle size of less than about 4 microns and a stabilizing agent comprising a gum or surface active agent, said fat-substitute having organoleptic properties of a fat in said food product.
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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) | 1994-06-03 | 1994-12-03 | 1995-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-06-03 | 1998-12-03 | 1999-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-06-03 | 2002-12-03 | 2003-06-04 | $7700.00 | Window Closed / Lapsed |