Food or edible material: processes – compositions – and products – Products per se – or processes of preparing or treating... – Fat or oil is basic ingredient other than butter in emulsion...
Reexamination Certificate
1999-04-09
2003-02-25
Paden, Carolyn (Department: 1761)
Food or edible material: processes, compositions, and products
Products per se, or processes of preparing or treating...
Fat or oil is basic ingredient other than butter in emulsion...
C426S604000, C426S606000, C426S611000, C426S648000, C426S649000, C426S650000, C426S654000
Reexamination Certificate
active
06524637
ABSTRACT:
BACKGROUND OF THE INVENTION
The present invention relates to a composition. In particular, the present invention relates to a composition for providing a stable suspension of a particulate component.
The preparation or supply of materials in a powder form is problematic. The powder may dust. Dust may be noxious, may have a high or unpleasant odour, settles on surfaces and may require cleaning therefrom. Furthermore, some powders, for example enzymes, may cause allergy. Moreover, powders are difficult to meter/dose in industrial applications, and this difficulty may increase production costs. Powders are often supplied in bags/sacks which require manual opening. Furthermore, because of dosing problems, industrial processes using powders must often be performed in a batchwise manner.
Thus, in many applications, for example the production of foodstuffs, it is desirable to provide a suspension of particulate material, such as functional ingredients, in a dispersant. The suspension may be used in a manufacturing process or may constitute an intermediate or a final product for sale to a consumer.
EP-A-0572051 relates to a liquid bread improver. The bread improver comprises a vegetable oil having a solid fat content of less than 2.0, a hydrogenated vegetable oil which is solid at room temperature, a partly hydrogenated vegetable oil which is solid at room temperature, emulsifieris including at least some diacetyl tartaric esters, and enzymes. The crystal size of the fat present in the composition is less than 25 &mgr;m. In this prior art application, the average particle size of the particles present in the composition is always less than 50 &mgr;m.
WO-A-94/08470 relates to a salad dressing. The document discusses the problems of phase separation of the oil and water phases of the dressing. This prior art document teaches that a high melting fat which may be added to the oil is thought to form a fragile agglomerate of fine crystals in which aqueous droplets are captured, so that phase separation is prevented.
U.S. Pat. No. 5,185,173 relates to a pumpable bread improver comprising a dispersion of solid particles in a liquid glyceride oil, wherein the solid particles include solid fat particles. The composition comprises greater than 18 wt % solid fat particles. The solid fat particles have a specific density similar to that of the oil and therefore should not rapidly settle to form a sediment. The presence of the fat in particulate form may prevent the sedimentation of the other solid particles.
U.S. Pat. No. 4,889,740 relates to a pourable shortening comprising a liquid glyceride oil and solid fat glyceride particles. The shortening is prepared so that the solid fat particles are substantially in the &bgr; crystal form. The shortening may contain solid additives such as emulsifiers. The solid additives will form a crystal matrix or will form part of the structure of the &bgr; crystal matrix formed by the solid fat glyceride particles.
The prior art has therefore provided some systems for suspending particulate material in a dispersant.
The present invention addresses the problem of the prior art
The present invention aims to overcome the problems of the prior art.
SUMMARY OF THE INVENTION
Aspects of the present invention are recited in the claims appended hereto.
In a broad aspect the present invention provides a composition comprising (a) a dispersant; (b) a crystal matrix forming component; (c) a particulate component; wherein the particulate component (c) is in a stable suspension within a crystal matrix formed by component (b). In this aspect, preferably the particulate component (c) does not form a crystal matrix.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
The file of this patent contains at least one drawing executed in color. Copies of this patent with color drawing(s) will be provided by the Patent and Trademark Office upon request and payment of the necessary fee.
DESCRIPTION OF THE DRAWINGS
FIG. 1
shows two volumetric cylinders. The cylinder on the left of the photograph contains a composition not in accordance with the present invention. The cylinder on the right of the photograph contains a composition in accordance with the present invention.
The present invention is advantageous as it overcomes the problems associated with the prior art.
The term “a crystal matrix formed by component (b)” preferably means that component (b) has a minimum surface area of at least 2 m
2
per gram of component (b). The surface area can be calculated in accordance with Protocol C recited after the Examples.
The term “does not form a crystal matrix” preferably means that the particulate component (c) does not form a crystal matrix and/or the structure of the crystal matrix formed by component (b) or a part thereof is not formed from component (c).
The term “stable suspension” preferably means that the composition has a Sedimentation Index (S.I.) in accordance with Protocol A of less than 50%. More preferably, the composition has a S.I. of less than 30%. More preferably, the composition has a S.I. of less than 20%. More preferably, the composition has a S.I. of less than 10%. More preferably, the composition has a S.I. of less than 5%. Protocol A is recited after the examples.
The term “stable suspension” preferably means that the composition has a Separation Index (Sp.I.) in accordance with Protocol B of greater than 70%. More preferably, the composition has a. Sp.I. of greater than 80%. More preferably, the composition has a Sp.I. of greater than 90%. More preferably, the composition has a Sp.I. of greater than 95%. Protocol B is recited after the examples.
The term “particulate component” preferably means a component which is solid on addition to components (a) and/or (b) and is substantially insoluble in components (a) and/or (b).
The term “substantially insoluble” preferably means after a period of 1 day (preferably at a temperature of 20° C.) after the addition of component (c) to components (a) and/or (b) at least 50% by weight based on the weight of component (c) is in the solid phase. More preferably, the term means after a period of 1 day (preferably at a temperature of 20° C.) after the addition of component (c) to components (a) and/or (b) at least 60% by weight based on the weight of component (c) is in the solid phase. More preferably, the term means after a period of 1 day (preferably at a temperature of 20° C.) after the addition of component (c) to components (a) and/or (b) at least 80% by weight based on the weight of component (c) is in the solid phase. More preferably, the term means after a period of 1 day (preferably at a temperature of 20° C.) after the addition of component (c) to components (a) and/or (b) at least 90% by weight based on the weight of component (c) is in the solid phase.
The term “triglyceride fatty acid” preferably means a triester of glycerol and a fatty acid. More preferably the triglyceride fatty acid is a triester of glycerol and a C4 to C24 fatty acid. Preferably the triglyceride fatty acid has an iodine value of from 0 to 60.
The term “oil mimetic” preferably means a material and/or compound and/or composition capable of exhibiting oil like properties. Preferably the oil mimetic is a material and/or compound and/or composition which is liquid and/or is pumpable. Preferably the oil mimetic is a liquid which is non-aqueous.
The term “fully hardened fat” preferably means a triglyceride fatty acid having an iodine value of no greater than 2. Preferably, the triglyceride is a triester of glycerol and a fatty acid having a fatty acid chain length of from 4 to 24 carbon atoms.
The term “partially hardened fat” preferably means a triglyceride of a fatty acid having an iodine value of greater than 2. Preferably, the triglyceride is a triglyceride of a fatty acid having a fatty acid chain length of from 4 to 24 carbon atoms.
The term “high melting point emulsifier” preferably means an emulsifier having a dropping point of greater than 40° C. Preferably the high melting point emulsifier has a dropping point of greater than 60° C. Preferably the high meltin
Søe Jørn Borch
Thygesen Hanne Valsted
Vogensen Bent Kvist
Danisco A/S
Frommer Lawrence & Haug
Kowalski Thomas J.
Paden Carolyn
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