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Kenya Industrial Property Institute,    (11) Patent Number: KE 289 (45) Date of grant: 12/01/2009

(12) PATENT
(51) Int.CI.A: 2 3D 7/00

(21)Application    PCT/EP06/000802
Number:
(22)Filing Date:    25/01/2006
(31)Priority Number: 0575392.0 17/02/2005 EP; 0575393.8 17/02/2005 EP; 0575384.7 17/02/2005 EP and 0575391.2 17/02/2005 EP (73) Owner(s):
Unilever PLC of Unilever House, Blackfriars, London EC4P 4BQ,
United Kingdom    (84) WO No. WO 2006/087093 Al
24/08/2006
(32) Date: (33) Country:
   

(72) Inventor(s)    GARBOLINO, Chiara; (NL). and HUIZINGA, Hindrik;
(NL).
(74)Agent/address for correspondence: Kaplan & Stratton Advocates, P.O. Box 40111-00100,
Nairobi
(54) Title:    PROCESS FOR THE PREPARATION OF A SPREADABLE DISPERSION
COMPRISING STEROL
(57) Abstract: Process for the preparation of a spreadable edible dispersion wherein a mixture of oil and solid structuring agent particles is subjected to stirring and an aqueous phase and/or solid phase is gradually added to the mixture until a dispersion of the desired oil content is obtained, wherein the solid structuring agent particles have a microporous structure of submicron size particles and comprise sterol.
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WO 2006/087093    PCT/EP2006/000802
1
Process for the preparation of a spreadable dispersion comprising sterol
Description
5
Field of the invention
The present invention relates to a process for the preparation of a spreadable edible dispersion comprising oil and structuring agent, in particular to such
10 dispersions comprising oil and structuring agent as continuous phase and a dispersed phase. The dispersed phase may be an aqueous liquid (thus forming a water-in-oil emulsion) and/or a solid particulate matter (thus forming a suspension).
15
Background of the invention
Edible dispersions comprising oil and structuring agent are well known. Examples of well-known products that substantially consist of such edible dispersions are water-
20 in-oil emulsions, such as for instance margarines and spreads. These edible dispersions typically have an oil phase that is a blend of liquid oil and fat that is solid
at normal ambient temperature (20°C). This solid fat, often also designated as hardstock, acts as structuring agent,
25 and its function is to stabilise the dispersion. For a margarine or spread, ideally the structuring agent has such properties that it should have melted or dissolved at mouth temperature, otherwise the product has a heavy, waxy mouthfeel.
30
 
2
US 2002/0076476 discloses edible oil-in-water emulsions having sensorial properties resembling those of mayonnaise having reduced oil content. This is achieved by using small-sized oil droplets in combination with casein.
5
EP 1 197 153 relates to aqueous phase dispersions or suspensions comprising high melting lipids having a size of 15 microns or less in combination with a non-sterol emulsifier.
10
US 6,129,944 relates to products containing microcrystalline plant sterol, a method of production for such products by pulverisation and to the use of said products for producing edible products.
15
Other known dispersions comprising oil and structuring agent are disclosed in EP-A-775444 and WO 98/47386. Herein the dispersed phase is a dry particulate matter, such as e.g. flour, starch, salt, spices, herbs etc.
20 Generally, the edible dispersions comprising structuring agent are prepared according to prior art processes that encompass the following steps:
1)    mixing/dispersion of the aqueous phase and/or the solid phase and the oil phase, at a temperature where the oil 25    phase, including the structuring agent is liquid;
2)    formation of a fat crystal network to stabilise the resulting dispersion and give the product some degree of firmness;
3)    modification of the crystal network to produce the 30    desired firmness and confer plasticity.
 
3
In case the dispersion is a low-fat water-in-oil emulsion spread (i.e. with a oil content of 45 wt.% or less), normally in step 1) a oil-in-water emulsion (premix) is formed, which in step 2) is inverted, so that a transition
5 of the emulsion from oil-in-water to water-in oil (inversion) occurs. Inversion has a number of disadvantages: it is difficult to control and rework (i.e. material that is not packed, but returned to the premix, needs to be reinverted, which may lead to processing
10 complications.
The steps 1)-3) are usually conducted in a process that involves apparatus that allow heating, cooling and mechanical working of the ingredients, such as the churn
15 process or the votator process. The churn process and the votator process are described in Ullmanns Encyclopedia, Fifth Edition, Volume A 16 pages 156-158. Using these techniques excellent dispersions (spreads) having high emulsion stability and good melting properties in the mouth
20 can be prepared.
However, a disadvantage of the known processes is that the process involves a heating step and a cooling step and therefore requires a lot of energy. In a dispersion with
25 for instance 4 wt.% structuring agent the whole weight of
the dispersion (100 wt.%) needs to be heated and cooled.
Another disadvantage of the known processes is that the choice of fats that can practically be used as structuring
30 agent is rather limited. If the melting point of the structuring agent is too high the melting properties in the mouth are unsatisfactory. If on the other hand, the melting
 
WO 2006/087093    PCT/EP2006/000802
4
point is too low, the emulsion stability will be negatively affected. Moreover the amount of saturated fatty acids in the structuring agent is usually relatively high. Saturated fatty acids are a known risk factor for cardiovascular
5 health.
Further disadvantage of the known processes is that the product may deteriorate due to the changes in temperature caused by the heating and cooling step and that heat-
10 sensitive ingredients cannot be incorporated.
Additionally, when low-fat spreads are prepared an inversion step is usually needed, which is difficult to control and has rework problems.
15
Co-pending application PCT/EP2004/006544 describes edible dispersions, including water-in-oil emulsions, that comprise a structuring agent having a microporous structure of submicron size particles. The water-in-oil emulsion may
20 be a table spread. In the examples pourable emulsions and pourable dispersions were described. The edible dispersions may for instance be prepared by mixing an oil phase with structuring agent particles with a separately prepared water phase.
25
Summary of the invention
It is therefore an object of the invention to provide a process for the preparation of a spreadable dispersion that requires less energy than the known processes. Another
30 object is to provide such a process that allows the use of more types of structuring agent, especially more sorts of hardstock. A further object of the invention is a reduction
 
WO 2006/087093    PCT/EP2006/000802
5
of the amount of saturated fatty acids in the hardstock. Still a further object of the invention is to provide a process for the preparation of a dispersion that allows the incorporation of heat-sensitive ingredients and/or that
5 avoids deterioration of the emulsion.
One or more of these objects is attained according to the invention which provides a process for the preparation of a spreadable edible dispersion having a fat content of less
10 than 70 wt.%, wherein a mixture of oil and solid structuring agent particles is subjected to stirring and an aqueous phase is added to the mixture until a dispersion is obtained, wherein the solid structuring agent particles, also described as secondary particles, have a microporous
15 structure and said particles are agglomerates of primary particles of submicron size, said primary particles are platelets having an average thickness of 0.01-0.5grn and further (the solid structuring agent particles) comprise sterols. Gradually is herein defined as not adding the
20 whole solid or aqueous phase at the start of the process, but in two or more portions at different times during the process if conducted batchwise or in two or more places in the process equipment in a continuous process.
25 With the process according to the invention, products are obtained that have a smaller water droplet size (D3,3 as described herein) and a firmer structure (Stevens value as described herein) than products prepared according to the prior art votator process. The smaller water droplet size
30 leads to increased microbiological stability, so product may be made that need less or no salt and/or preservative.
 
6
Further according to the invention low fat spreads may be prepared that need no thickener or gelling agent in the water phase. When low-fat spreads are prepared an additional advantage of the process according to the
5 invention is that no inversion is needed.
Contrary to the process described in Co-pending application PCT/EP2004/006544, in the present process the aqueous phase and/or solid phase is gradually added to the mixture until
10 a dispersion of the desired oil content is obtained. This makes the preparation of dispersion having a relatively low oil content, i.e. below 45 wt.%, possible.
Detailed description of the invention
15 According to the invention, an aqueous phase is added to a mixture of oil and solid structuring agent particles which is stirred, until a dispersion is obtained. A dispersion is herein defined as a system in which two or more phases that are insoluble or only slightly soluble are distributed in
20 one another.
The dispersion may be an emulsion, a suspension or foam or any combination thereof, it may be oil continuous, water continuous or bi-continuous. Preferably the dispersion is
25 oil continuous, more preferably an oil continuous emulsion or oil continuous suspension.
Where a solid phase is present in the dispersion according to the invention, it is preferably a solid phase of dry
30 particulate matter.
 
7
Where an aqueous phase is present in the dispersion according to the invention, it is preferably a dispersed aqueous phase.
5 The amounts given will be expressed in wt.% relative to the total weight of the food composition, unless indicated otherwise.
Fat and oil may sometimes be used interchangeably herein, 10 for instance fat phase and oil phase and fat content or oil content may be used to indicate the same.
According to the invention spreadable edible dispersions are provided comprising micronised structuring agent
15 particles wherein said structuring agent particles, also described as secondary particles, have a microporous structure and said particles are agglomerates of primary particles of submicron size, said primary particles are platelets having an average thickness of 0.01-0.5 pm,
20 wherein the dispersion has a Stevens value, measured at room temperature as defined herein of 30g or more, preferably 50g or more, more preferably 80g or more and most preferably 100g or more, said dispersion also comprising sterol.
25
Preferably the fat content of the spreadable dispersion of the invention is from 10-70 wt.%, for example 45 wt.% or less, preferably 33-69.65 wt.%.
30 Preferably the dispersion is a low-fat water-in-oil emulsion spread having a fat content of 45 wt.% or less, more preferred 33-45 wt.%.
 
WO 2006/087093    PCT/EP2006/000802
8
The invention further provides a low-fat water-in-oil emulsion spread comprising sterol, having a fat content of 45 wt.% or less, a Stevens value measured at room
5 temperature as defined herein of 60 g or more and a saturated fat content (SAFA) of 25 wt.% or less. SAFA content (wt.%) is herein expressed based on the weight of the fat phase.
10 In a preferred embodiment, the low-fat emulsion spread comprises from 3 to 25 wt.% sterol, more preferred from 7 to 15 wt.% sterol.
Preferably the spreadable edible dispersions according to
15 the invention has a low water droplet size, preferably the water droplet size as defined herein is 10 pm or less, more preferably 5 pm or less.
According to the invention, the dispersion is formed by
20 mixing oil, the solid structuring agent particles comprising sterols, and the other phase or phases of the dispersion, such as for example an aqueous phase, a solid phase and/or a gas phase.
25 According to the invention, the solid structuring agent particles (also described herein as secondary particles) should have a microporous structure of submicron size particles (also described herein as primary particles) and further they comprise sterol.
30
The secondary particles are agglomerates of primary particles which have a microporous structure. The size of
 
WO 2006/087093    PCT/EP2006/000802
9
the primary particles is submicron (that is they have a diameter below 1p).
An example of a microporous structure is shown in figures 6
5 and 7 of PCT/EP2004/006544. The primary particles typically have the shape as shown in figure 7, in which the platelets with submicron dimensions are the primary particles. The thickness of the platelets should be submicron, preferably the thickness is on average 0.01-0.5pm, more preferably
10 0.03-0.2gm, even more preferably 0.06-0.12pm.
Equivalent good results were obtained for a secondary particles having a microporous structure of more bubble-like shape, such as shown in figure 10 of
15 PCT/EP2004/006544. In such microporous structure the wall thickness of-the bubbles should be submicron, for instance on average 0.01-0.5pm, more preferably 0.03-0.2pm, even • more preferably 0.06-0.12gm.
20 The secondary particles, may, in the course of the preparation of the dispersion, for instance through the force of a mixer, be broken into submicron particles. The resulting submicron particles will form the structuring network of the dispersion.
25
The structuring agent comprises sterol. Where reference is made to sterol this includes the saturated stanols and esterified derivatives of sterol/stanol or mixtures of any of these.
30
 
10
In this application where reference is made to sterolester, this also includes their saturated derivatives, the stanol esters, and combinations of sterol- and stanol esters.
5 Sterols or phytosterols, also known as plant sterols or vegetable sterols can be classified in three groups, 4- desmethylsterols, 4-monomethylsterols and 4,4'- dimethylsterols. In oils they mainly exist as free sterols and sterol esters of fatty acids although sterol glucosides
10 and acylated sterol glucosides are also present. There are three major phytosterols namely beta-sitosterol, stigmasterol and campesterol. Schematic drawings of the components meant are as given in "Influence of Processing on Sterols of Edible. Vegetable Oils", S.P. Kochhar; Prog.
15 Lipid Res. 22: pp. 161-188.
The respeCtive 5 alpha- saturated derivatives such as sitostanol, campestanol and ergostanol and their derivatives are in this specification referred to as
20 stanols.
Preferably the (optionally esterified) sterol or stanol is selected from the group comprising fatty acid ester of p-sitosterol, p-sitostanol, campesterol, campestanol,
25 stigmasterol, brassicasterol, brassicastanol or a mixture thereof.
The sterols or stanols are optionally at least partly esterified with a fatty acid. Preferably the sterols or
30 stanols are esterified with one or more C2-22 fatty acids. For the purpose of the invention the term C2_22 fatty acid refers to any molecule comprising a C2-22 main chain and at
 
11
least one acid group. Although not preferred within the present context the C2-22 main chain may be partially substituted or side chains may be present. Preferably, however the C2-22 fatty acids are linear molecules
5 comprising one or two acid group(s) as end group(s). Most preferred are linear C8-22 fatty acids as these occur in natural oils.
Suitable examples of any such fatty acids are acetic acid,
10 propionic acid, butyric acid, caproic acid, caprylic acid,
capric acid. Other suitable acids are for example citric
acid, lactic acid, oxalic acid and maleic acid. Most
preferred are myristic acid, lauric acid, palmitic acid,
stearic acid, arachidic acid, behenic acid, oleic acid,
15 cetoleic acid, erucic acid, elaidic acid, linoleic acid and linolenic acid.
When desired a mixture of fatty acids may be used for esterification of the sterols or stanols. For example, it
20 is possible to use a naturally occurring fat or oil as a source of the fatty acid and to carry out the esterification via an interesterification reaction.
The amount of sterol in the structuring agent is preferably 25 from 80 to 100 wt.% on total weight of the structuring agent.
Preferably, the structuring agent comprises edible lipid,
more preferably it is edible fat. Edible fats consist
30 predominantly of triglycerides. Typically such edible fats
suitable as structuring agent are mixtures of
triglycerides, some of which have a melting point higher
 
WO 2006/087093    PCT/EP2006/000802
12
than room or ambient temperature and therefore contain solids in the form of crystals.
The solid structuring agent, also denoted as hardstock, 5 serves to structure the fat phase and helps to stabilise the dispersion.
For imparting to common margarine a semi-solid, plastic, spreadable consistency this stabilising and structuring
10 functionality plays an important role. The crystals of the solid fat form a network throughout the liquid oil resulting into a structured fat phase. The aqueous phase droplets are fixed within the spaces of the lattice of solid fat crystals. In this way coalescenOe of the droplets
15 and separation of the heavier aqueous phase from the fat phase is prevented.
The process according to the invention may be executed batch-wise or continuous. Conventional unit operations and
20 apparatus, e.g. mixers, pumps and extruders may be used. A suitable process flow diagram for a continuous process according to the invention is given in figure 1. Micronised fat may be added to the premix or via the inlet (5), preferably at least part of the micronised fat is added via
25 inlet (5).
Further common ingredients of the fat phase are emulsifiers, such as monoglycerides and lecithin, colouring agents and flavours.
30
The solid structuring agent particles (secondary particles) preferably have an average particle size (D3,2) of 60
 
13
micrometer or less, more preferably the solid structuring agent particles have an average particle size of 30 micrometer or less. The average particle size (D3,2) is determined as indicated in the examples.
5
Preferably the solid structuring agent particles are prepared using a micronisation process. In the micronisation process the solid structuring agent particles are prepared by preparing a homogeneous mixture of
10 structuring agent and liquified gas or supercritical gas at a pressure of 5-40 MPa and expanding the mixture through an orifice, under such conditions that a spray jet is applied in which the structuring agent is solidified and micronised. The liquified gas or supercritical gas may be
15 any gas that may be used in the preparation of food products, for example carbondioxide, nitrogen, propane, ethane, xenon or other noble gases. Carbondioxide and propane are preferred. Carbondioxide is most preferred. Advantages of carbondioxide are that it has a mild (31°C)
20 critical temperature, it is non-flammable, nontoxic, environmentally friendly and it may be obtained from existing industrial processes without further contribution to the greenhouse effect. It is fairly miscible with oil and is readily recovered owing to its high volatility at
25 ambient conditions. Finally liquid CO2 is the second least expensive solvent after water.
The temperature of the mixture of structuring agent and liquified gas or supercritical gas is preferably such that
30 the mixture forms a homogeneous mixture. Advantageously, the temperature of the mixture of structuring agent and liquified gas or supercritical gas is below the slip
 
14
melting point of the structuring agent at atmospheric pressure and above the temperature at which phase separation of the mixture occurs. Under such conditions the smallest micronised particles may be obtained.
5
The pressure and temperature of the mixture of structuring agent and liquefied or supercritical gas is preferably such that a large amount of the gas may be dissolved in the structuring agent. The amount dissolved will be determined
10 by the phase diagram of the mixture of structuring agent and liquified or supercritical gas. At higher pressures as well as at lower temperatures more gas will dissolve in the structuring agent.
15 Preferably the temperature and pressure are chosen such that 10 wt.% or more, more preferably 20 wt.% or more or most preferably 30 wt.% or more of gas is dissolved in the liquid phase. The mixture of structuring agent and liquified or supercritical gas may contain additional
20 substances, such as for instance oil. We have found that the addition of oil may reduce sintering of the micronised particles of the structuring agent.
The mixture containing structuring agent and liquefied or
25 supercritical gas is depressurized over a small orifice or nozzle, to break up the mixture into small droplets. The break-up of the mixture into droplets can be assisted e.g. by internals inside the nozzle before the orifice to generate a whirl, or by passing a gas at a high flow rate
30 near the orifice.
 
15
The mixture is depressurized into a volume where the pressure is higher than, equal to or lower than atmospheric pressure.
5 We have found that sintering, agglomeration and ripening of micronised particles of the structuring agent will lead to a reduced performance of the particles for structuring the dispersion.
10 To avoid sintering, agglomeration and/or ripening of the micronised particles, preferably a gas jet is applied in addition to the flow of the spray jet. The additional gas jet is most effective when the gas jet is positioned such that recirculation of material expanded through the orifice
15 is reduced or avoided. Especially advantageous is a position wherein the gas from the gas jet flows essentially tangentially to the flow direction of the spray jet. Most advantageously the gas inlet for the gas jet is positioned behind the exit of the nozzle, see figure 2 of
20 PCT/EP2004/006544. This figure shows that the additional gas inlet (1) behind the exit of the nozzle (2) creates a gas flow (3) tangentially to the flow of the spray jet (4).
A further preferred edible dispersion according to the
25 invention is a dispersion of a solid matter, preferably a dry particulate matter, dispersed in a continuous phase of oil and structuring agent. Preferred material for the dry particulate matter is one or more of flour, starch, salt, herbs (e.g. dried herbs), spices and mixtures thereof.
30 Preferably in such dispersions, the amount of solid matter is 30-75 wt.%, more preferably 40-65 wt.% based on total weight of the dispersion.
 
16
The amount of structuring agent should be such that a suitably stable dispersion is obtained. When the structuring agent is micronised sterol or a combination of
5 micronised sterol and micronised fat, the amount is preferably 1-20 wt.%, more preferably 4-12 wt.% based on total weight of the dispersion.
Description of the figures
10
Fig. 1    Process flow diagram for a continuous process.
(1) designates a premix vessel, (2) a pump, (3) a high shear mixer, (4) an extruder type mixer and (5) a feed entrance for micronised fat.
15
Examples
General
20 Method to determine slip melting point
The slip melting point of structuring agent is determined in accordance with F. Gunstone et al, The Lipid Handbook, second edition, Chapman and Hall, 1995, page 321, Point 6.2.3, Slip point.
25
Method to determine D3,2 of the particle size distribution of micronised fat particles
Low-angle laser light scattering (LALLS, Helos Sympatic)
30 was used to measure the average particle size (D3.2). The fat particles were suspended in water in a quixel flow cuvette with an obscuration factor of 10-20%. The
 
17
diffraction pattern was measured at 632.8 nm with a lens focus of 100 mm and a measurement range of 0.5-175 pm. Calculations were bases on the Fraunhofer theory.
5 A full description of the principle of LALLS is given in ISO 13320-1.
Method to determine D3,3 of water droplet size distribution  in an emulsion
10 The water droplet size was measured using a well-known low resolution NMR measurement method. Reference is made to Van den Enden, J.C., Waddington, D., Van Aalst, H., Van Kralingen, C.G., and Packer, K.J., Journal of Colloid and Interface Science 140 (1990) p. 105.
15
Method to determine oil exudation
Oil exudation is determined by measuring the height of the free oil layer that appears on top of the product. This free oil layer is considered a product defect. In order to
20 measure oil exudation, the product is filled into a scaled glass cylinder of 50 Ml. The filling height is 185 mm. The filled cylinder is stored in a cabinet at constant temperature (15°C). Height measurements are executed every week, by measuring the height of the exuded oil layer in mm
25 with a ruler. Oil exudation is expressed as the height of the exuded oil layer divided by the original filling height and expressed in %. Shaking of the cylinders should be avoided.
30
 
18
Stevens value
Stevens values give an indication about the firmness of a product. The firmness of all products stored at 5°C for 24 hours was measured at room temperature using a Stevens
5 Texture Analyser (1 mm/sec, 25 mm depth, 4.4. mm probe) and is quoted herein as the Stevens value (in g).
Example 1: Preparation of a spreadable margarine
10 A high-fat spreadable margarine was prepared with the composition shown in table 1:
Table 1: Composition of high-fat spreadable margarine
Ingredient    Amount (wt.%)
Oil phase   
Sunflower oil    59.68
Micronised fat powder comprising sterol    9.64
Lecithin Bolec ZIT'    0.32
Emulsifier Hymono 8903    0.20
beta-carotene (0.4 wt.% solution in sunflower oil)    0.15
Water phase   
Water    29.65
Potassium sorbate    0.08
Sodium chloride    0.28

15 1Hardstock fat as prepared in example 1 and 2 of EP-A-89082 which was micronised as in example 1 of PCT/EP2004/006544. This hardstock was mixed with 50 wt.% beta sitbsterol.
20 The water phase was prepared by adding salt and potassium sorbate to distilled water and adjusting the pH of distilled water from 7.7 to 4.0 using 5 wt.% solution of
 
19
citric acid in water, and heated for 5 minutes in a bath of 60°C to dissolve the solids. The oil phase was prepared by dissolving the emulsifier ingredients and 0-carotene in the total amount of sunflower oil at 60°C and cooled down to
5 15°C afterwards. Subsequently the micronised fat powder was added to the oil phase carefully using a spatula and the oil phase was mixed with a kitchen mixer (Philips Essence HR1357/05) for 2 minutes. Then the water phase was added to the oil phase and the resulting mixture was mixed with the
10 mixer for another 5 minutes at ambient temperature. A droplet size (D3,3) of about 10pm was obtained. The spread was put in a margarine tub and stored at 5°C. Results in table 3.
15 Example 2: Preparation of a low-fat spread
A low-fat (33 wt.% fat) spreadable margarine spread was prepared with the composition shown in table 2:
20 Table 2: Composition of low-fat. spread
Ingredient    Amount (wt.%)
Oil phase   
Sunflower oil    27.65
Micronised fat powder as in example 1    4.59
Lecithin Bolec Z111    0.32
Emulsifier Hymono 8903 (monoglyceride)    0.33
Beta-carotene (0.4 wt.% solution in sunflower •oil)    0.15
Water phase   
Water    66.60
Potassium sorbate    0.08
Sodium chloride    0.28
 
20
The micronised fat powder was mixed with half of the oil to obtain a fat powder/oil slurry. The fat/oil slurry was then stirred manually in the remainder of the oil to make the oil phase. In the next step the oil phase (slurry) was put
5 in an EscoLabor device and half of the water phase was added to the oil phase. The EscoLabor vessel was kept at 5°C. The water and oil phase were mixed under vacuum.
The scraper speed was found to be 80% of the maximum
10 rotational speed and power of the Ultra Turrax was found to be optimal at 50% of maximum power. During the mixing of the oil- and water phases the remaining amount of water was added cautiously within 5 minutes. This yielded a homogeneous but very thick fat continuous product after 15
15 minutes. After 15 a droplet size (D3,3) of 3pm was obtained. This low fat spread was evaluated after 4 weeks of storage at 5°C. Results are given in table 3.
Table 3: Stevens values and fat level low-fat micronised 20    fat spread
Example    Fat level    Stevens value
    (%)    at 5°C (g)
Example 1    70    88
Example 2    33    112

Example 3
A spread was produced with a composition as in table 4.• A
25 stable spread resulted. The water phase was made by mixing the salt in distilled water and holding the mixture at room temperature. The fat phase was produced by adding the micronised fat powder to liquid oil using a spatula. The
 
WO 2006/087093    PCT/EP2006/000802
21
water phase and the oil phase were mixed using a home kitchen mixer.
It was possible to prepare a stable spread without
5 emulsifier and thickener. The long term stability and/or consistency of the spread without emulsifier may be improved by adding a thickener to the water phase, e.g. 1 wt.% starch, a suitable starch type is Resistamyl 310.
10 Table 4: composition of example 3
Ingredient    Amount (wt.%)
Oil Phase   
Sunflower oil    33.87
Micronised fat powder •    as in example 1    5.98
Beta-carotene (0.4
wt.% solution in
Sunflower oil)    0.15
Water phase   
Water    59.5
Salt    0.5
    100
 
22
Claims
1 Process for the preparation of a spreadable edible dispersion having a fat content of 70 wt.% or less, wherein a mixture of oil and solid structuring agent particles is subjected to stirring and an aqueous phase is added to the mixture until a dispersion is
obtained, wherein the solid strwturing agent particles, also described as secondary particles, have a microporous structure and said particles are agglomerates of primary particles of submicron size,
said primary particles are plat.o1Qts having an average thickness of U.D1-0.5pm and further the solid structuring agent particles comprise stexpl.
2.    Process according to claim 1, wherein the solid structuring agent particles additionally comprise edible lipid.
3.    Process according to claim 2, wherein the lipid is a fat.
4.    Process according to any of claims 1 to 3, wherein the solid structuring agent particl_es axe prepared using a mioronisation process.
 
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