Patent Description:
Flour tortillas are a unique baked product, made from cereal flour, usually maize or wheat.

Wheat flour tortillas are gluten structured, just like bread. Almost all tortillas are chemically leavened, baked quickly and cooled to ambient temperatures in less than <NUM> minutes.

Flour tortillas have soft, silky, smooth texture, are opaque and fluffy and have excellent pliability; are resistant to cracking and have small, evenly distributed blisters. Blisters create desirable characteristics in the final product, showing up as lightly browned spots on the surface.

Flour tortillas are becoming increasing popular, for instance as a substitute for bread, rolls and buns.

Flour tortillas can be made by making a dough from flour, fat and salt and water (E. Most large commercial tortilla manufacturers use the hot-press method of mixing, forming and baking to produce flour tortillas, e.g. as described in <NPL>)
In this method, a smooth dough comprising flour, water, fat, salt, and usually one or more ingredients selected from baking powder, yeast, preservatives, gums, reducing agents and emulsifiers is mixed to an extensible, elastic, non-sticky and relatively firm dough.

By optimally mixing and adding proper water levels a silky, smooth-textured dough, with many layers in the final product is formed.

Dough temperature also affects consistency, with lower dough temperatures increasing water absorption. This leads to a softer final product. The temperature may for instance be in the range of <NUM>-<NUM>. The optimum temperature for flour-tortilla dough is usually <NUM>° to <NUM>.

After mixing, the flour tortilla dough is scaled to a desired weight, usually from about <NUM> to about <NUM> gram, e.g. about <NUM> to about <NUM> gram or about <NUM> to about <NUM> gram, depending on the desired diameter for the tortilla, is rounded into a ball and is then allowed to rest (relax, proof), usually for about <NUM>-<NUM> minutes. Proofing the dough helps the pressing process. Insufficient relaxation can result in a translucent finished product with less layering.

After resting, the dough pieces are placed under a hydraulic press that is heated. The pressing process forms a thin skin on the surface of the tortilla, limiting the escape of steam and carbon dioxide during baking. This causes the tortilla initially to form small blisters or gas pockets which deflate upon cooling.

Baking is usually done in a conveyer oven that flips the tortilla over during its journey through the oven. In particular, a specialized direct gas fired slatted belt may be used. Baking time (oven dwell time) may for instance be approximately <NUM> seconds in a <NUM>° to <NUM> oven. In a specific embodiment, the oven temperature is <NUM>-<NUM>. The tortillas are then cooled and packaged.

The over-all quality of flour tortillas, is determined by various properties. A low fat content is generally desired from a consumer perspective, as fat gives rise to a high calorific density. In particular a high saturated fat content is considered less desirable from a health perspective. However, in particular tortillas having a reduced fat content may be considered inferior to regular-fat tortillas (typically containing about <NUM> -<NUM> wt. % fat, for instance <NUM>-<NUM> wt. % fat), but also for regular-fat tortillas it is desirable to improve one or more properties.

Relevant properties in particular include:.

Fat, in particular saturated fat (shortening) is conventionally used in a substantial amount to provide desirable properties, such as described above, especially for tortillas wherein at least a substantial part of the flour used for the dough is wheat flour. Flour tortillas made with liquid fat (vegetable oil comprising a high content of unsaturated fat) address the health concern with respect to a high saturated fat content, but may also show rather high stickiness or zippering, like low-fat tortillas. Also dough conditioners, such as added emulsifiers, like monoglycerides and/or diglycerides may needed (see e.g. Plyer page <NUM>, referring to <NUM> % shortening and <NUM> % dough conditioner, relative to the flour weight).

In <CIT> it is described how a relatively simple measure surprisingly allows the preparation of a flour tortilla with good properties, such as rollability, stack height, etc as described above, at a relatively low fat content without needing dough conditioners. This is accomplished by applying a relatively low amount of a fatty substance to the tortilla dough prior to shaping. Although, this method provides good results, the dosing of fatty substance to the surface of the dough may require additional measures in order to be employed at a large industrial scale at low cost.

It has now been found that good properties such as rollability, stack-height non-stickiness etc. are also feasible at a relatively low fat content, and without needing emulsifiers or other non-triglyceride dough conditions, by using a specific fat component as an ingredient for a dough from which the tortilla is prepared.

Accordingly, the invention relates to a method for preparing a wheat flour tortilla according to claim <NUM>.

Generally, at least <NUM> %, preferably at least <NUM>%, in particular <NUM>-<NUM> % of the fatty acids are saturated fatty acids having <NUM>-<NUM> carbon atoms. Particularly good results have been achieved with a method according to the invention wherein the fat particles at least substantially consist of triglycerides of saturated fatty acids having <NUM>-<NUM> carbon atoms.

Further the invention related to a wheat flour tortilla dough according to claim <NUM>.

Further the invention relates to a flour tortilla according to claim <NUM>, in particular a wheat flour tortilla.

A flour tortilla obtained or obtainable in accordance with the invention in particular shows one or more improved properties with respect to folding characteristics, breaking characteristics, rolling characteristics, springiness, crust colour, layering/puffing, opacity, stacking stickiness and stack height compared to a tortilla made from a dough portion of the same dough (batch) wherein conventional shortening or an emulsifier, such as a mono- or diglyceride, is used.

The fat particles as defined in the present claims can be used in a method according to the invention to improve a property of a tortilla selected from the group of folding characteristics, breaking characteristics, rolling characteristics, springiness, crust colour, layering/puffing, opacity, stacking stickiness and stack height. In particular, good results have been achieved with respect to realizing an improvement on stickiness (reduced stickiness and reduced zippering), and improvement on rollability, foldability and strength. Further, addition of the fat particles has been found to have a positive effect on shape and diameter, in that in a mass production a higher percentage of the prepared tortillas meet the specs with respect to obtaining an essentially circular shape and the desired tortilla diameter.

Accordingly, the invention further relates to the use of fat particles to reduce flour tortilla stickiness or to reduce flour tortilla zippering according to claim <NUM>. The fat particles can in particular be a fat powder.

It has further been found that in a flour tortilla (obtained) according to the invention shelf-life (stack sticking) may be improved.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. , to the skilled person in the field of flour tortillas, it is clear that the term 'flour tortilla' relates to a type of soft thin flatbread made from cereal flour. The terms 'soft' , 'pliable' and 'rollable' are clear terms to distinguish flour tortillas in accordance with the invention from a different class of products that are also bear the name 'tortillas', such as tortilla chips, which have a crispy texture or the Spanish tortilla omelet. How well a flour tortilla performs on the rollability parameter can be assessing by wrapping the tortillas were wrapped around a dowel (<NUM> diameter) by trained personal. This can also be (semi) quantitatively assessed by marking the extent to which cracking and breaking occurs using a scale from <NUM> (broken immediately, impossible to roll, i.e. no flour tortilla), via <NUM> (minor degree of cracking or breaking, allowing to consume it e.g. with a filling) to <NUM> (no cracks or breakage).

The term "or" as used herein means "and/or" unless specified otherwise.

The term "a" or "an" as used herein means "at least one" unless specified otherwise.

The term "essential(ly)" or "substantially" is generally used herein to indicate that it has the general character or function of that which is specified. When referring to a quantifiable feature, this term is generally used to indicate that it is more than <NUM> %, in particular more than <NUM> %, more in particular at least <NUM> %, more in particular at least <NUM> %, even more in particular at least <NUM> % of the maximum that feature. The term 'essentially free' is generally used herein to indicate that a substance is not present (below the detection limit achievable with analytical technology as available on the effective filing date) or present in such a low amount that it does not significantly affect the property of the product that is essentially free of said substance or that it is present in such a low amount (trace) that it does not need to be labelled on the packaged product that is essentially free of the substance. In practice, in quantitative terms, a product is usually considered essentially free of a substance, if the content of the substance is <NUM> - <NUM> wt. %, in particular <NUM> - <NUM> wt. %, more in particular <NUM> - <NUM> wt. %, based on total weight of the product in which it is present.

The term "about" in relation to a value generally includes a range around that value as will be understood by the skilled person. In particular, the range is from at least <NUM> % below to at least <NUM> % above the value, more specifically from <NUM> % below to <NUM> % above the value.

When referring to a "noun" (e.g. a compound, an additive etc.) in singular, the plural is meant to be included, unless specified otherwise.

For the purpose of clarity and a concise description features are described herein as part of the same or separate embodiments, however, it will be appreciated that the scope of the invention may include embodiments having combinations of all or some of the features described.

In principle, a method of the invention can be used to prepare any type of (soft, rollable) flour tortilla from a dough as defined in claim <NUM>, in particular for the preparation of wheat flour tortillas. The tortilla may be selected from reduced fat flour tortilla's, low-fat flour tortilla's and full-fat flour tortilla's.

Full-fat tortillas usually have an ingredient-fat content of <NUM>-<NUM> wt. %, in particular of <NUM>-<NUM> wt. %, more in particular <NUM>-<NUM> wt. %, relative to flour weight.

The ingredient-fat content of the dough for a low - fat tortilla (as defined by the United States <NUM> CFR <NUM>, <NUM> (l) (m)) may in particular be less than <NUM> wt. % on flour weight or less than <NUM> per serving of a <NUM> tortilla. Preferably, the fat content is about <NUM> wt. More preferably the fat content is <NUM> wt. In a specific embodiment, the fat content is <NUM> wt.

The dough may be prepared in a manner known per se, with the proviso that the fat particles are added as well.

At least wheat flour is used for preparing the dough. Another cereal flour, in particular maize flour may be used in combination with wheat flour. Preferably, <NUM>-<NUM> wt. % of the flour is wheat flour, more preferably <NUM>-<NUM> wt. % of the flour is wheat flour. If another flour is combined with wheat flour, preferably maize flour is used. Particularly good results have been achieved with a method wherein the flour component for the tortilla dough consists of wheat flour.

Wheat flour usually comprises gluten and other protein(s) naturally present in the flour. Optionally gluten and/or other protein is added. Usually the protein content (including gluten) is at least about <NUM> wt. Usually the protein content (including gluten) is about <NUM> wt. Preferably the flour has a protein content of at least <NUM> wt. %, in particular a protein content of <NUM>-<NUM> wt. % (all relative to flour weight). With conventionally prepared tortillas problems have been encountered with flour containing less protein or gluten yield tortillas that crack easily and split after overnight storage. Flours with more than <NUM> wt. % gluten, however, produce doughs that take longer to mix and that require longer resting periods before pressing and baking. It is contemplated that in a method according to the invention, these drawbacks may be alleviated at least to some extent.

In accordance with the invention, it is generally not needed to add emulsifiers. If desired, an emulsifier can be present in the dough, for instance sodium-stearoyl-lactate (SSL). An emulsifier can be used to condition the dough, making it easier to handle and improving the finished texture. Mono- and diglycerides (e.g. distilled) can help to (further) reduce shortening levels, in order to achieve a similar shortening effect. These can be used to improve tearing quality and help prevent tortillas from sticking to each other in the package. A monoglyceride may be used to provide anti-staling qualities and improve shelf life.

However, particularly good results have been used without adding emulsifiers. Accordingly, these are generally not added to (provide) the dough. Accordingly, a flour tortilla according to the invention is generally essentially free of emulsifiers. If used, emulsifiers are generally used in a relatively low amount, typically of less than <NUM> wt. %, preferably of less than <NUM> wt. %, in particular of <NUM> wt. % or less, more in particular <NUM> wt. % or less, relative to the flour content.

A leavening agent can be present, providing puffing during the baking process, yielding a tender tortilla. Baking powder and leavening acids such as monocalcium phosphate (MCP), sodium aluminium phosphate (SALP) and sodium aluminium sulphate (SAS), sodium acid pyrophosphate (SAPP) may be used. Yeast may be used to provide the typical yeasty aroma and taste, as well as for leavening.

One or more enzymes belonging to the group of amylases, xylanases, proteases, lipases and oxidases, can be added. The enzymes may contribute to one or more desirable effects. Amylases have a positive effect on rollability and foldability, proteases have a positive effect on diameter and stack height. Xylanases and lipases have a positive effect on dough characteristics and on whiteness of the tortillas. In conventional tortillas, enzymes can have a negative effect on tortilla stickiness when used in suboptimal dosages or in suboptimal combinations. The present invention is also useful to improve (reduce) tortilla stickiness, as a result of an adverse affect of an enzyme or combination of enzymes.

A gum such as guar, carboxymethylcellulose, xanthan or gum arabic can be used to improve machinability, decrease dough stickiness, delay staling, improve rolling and folding properties, bind water, improve freeze/thaw stability and decrease moisture loss. It is advised to add gum (usually <NUM>-<NUM> wt. %, if present) during dry-blending to assure a homogeneous mix.

Starch can also add functionality to tortilla dough. Co-blending unmodified pregelatinized starches, such as potato starch, waxy starch, high amylose starch (usually <NUM>-<NUM> % based on flour weight, if present) with monoglyceride can improve machinability of a tortilla dough, thus improving production capacity.

A reducing agent can be used to improve dough quality and reduce resting time. L-cysteine, sodium bisulphite or sodium metabisulphite (usually <NUM>-<NUM> ppm, if present) may be used improve machinability and decrease elasticity. However, such agents are entirely optional.

An oxidizing agent such as ascorbic acid, azodicarbonamide or calcium peroxide may be used to improve mixing tolerance and dough machinability.

Milk solids can be added, such as non-fat dry milk. Such ingredient can improve crumb colour, flavour or dough handling. A concentration of about <NUM> wt. % milk solids is recommended.

A preservative can be added (usually <NUM>-<NUM> wt. %, if present), to inhibit mould growth after packaging. Sodium and calcium propionate, organic propionates, potassium sorbates, sorbic acid are in particular suitable as tortilla preservatives.

If desired, a pH-regulator, typically an acid such as fumaric, adipic, citric, is added to control the final pH of the tortilla, which is preferably <NUM> to <NUM> at <NUM>). pH can be determined by measuring the pH directly in the dough using a pH electrode. Alternatively, the pH in the final product can be determined by homogenizing a tortilla piece with fixed weight in water and measuring the pH using a glass electrode coupled with a pH meter. A pH below this range may result in a lighter colour, while a pH above the range may result in a darker colour, a bitter taste, more browning, a soapy mouthfeel or a limited mould free shelf life.

The fat particles at least substantially consisting of triglycerides of fatty acids having <NUM>-<NUM> carbon atoms, usually have a triglyceride content of <NUM>-<NUM> wt. A minor amount of one or more other components (acceptable for use in a food application may be present). A trace of other acylglycerides (monoglyceride, diglyceride) and/or free fatty acid may be present.

The fatty content as used herein as is usual in the art. It thus refers to the fatty acid content (of a specific fatty acid or total fatty acid), based on total moles of fatty acid, including fatty acid in bound form (such as in triglycerides, and - if present - other acylglycerides) and - if present - as free fatty acid. This can be determined by GC in a manner generally known per se.

Stearic acid is generally a major component of the fatty acid composition of the fat particles, generally providing at least about <NUM> % of the fatty acid composition. Typically, especially for the fat particles at least substantially consisting of triglycerides of saturated fatty acids having <NUM>-<NUM> carbon atoms, at least <NUM> % of, of the fat particles is stearic acid, preferably <NUM>-<NUM> %, more preferably <NUM>-<NUM> %, in particular <NUM>-<NUM> %.

In particular for an embodiment wherein the fat particles at least substantially consist of triglycerides of saturated fatty acids having <NUM>-<NUM> carbon atoms , generally, <NUM>-<NUM> wt. %, preferably <NUM>-<NUM> %, in particular about <NUM> % is of the fatty acid content is myristic acid (C14).

Generally <NUM>-<NUM> %, preferably <NUM>-<NUM> %, more preferably <NUM>-<NUM> % of the fatty acid content is palmitic acid (C16).

In particular for an embodiment, wherein the fat particles at least substantially consist of triglycerides of saturated fatty acids having <NUM>-<NUM> carbon atoms, generally <NUM>-<NUM> %, preferably <NUM>-<NUM> %, more preferably <NUM>-<NUM> %, in particular about <NUM> % of the fatty acid content is arachinic acid (C20).

In particular for an embodiment, wherein the fat particles at least substantially consist of triglycerides of saturated fatty acids having <NUM>-<NUM> carbon atom, generally <NUM>-<NUM>%, preferably <NUM>-<NUM> %, more preferably <NUM>-<NUM> %, in particular about <NUM> % of the fatty acid content is behenic acid (C22).

For an embodiment, wherein the fat particles at least substantially consist of triglycerides of saturated fatty acids having <NUM>-<NUM> carbon atoms, C8-C12 fatty acids generally form <NUM>-<NUM> %, in particular <NUM>-<NUM>% of the total fatty acid content, more in particular <NUM>-<NUM>% of the total fatty acid content.

Other fatty acids than C8-C22 saturated fatty acids generally form <NUM>-<NUM> %; in particular less than <NUM> % of the total fatty acid content, more in particular less than <NUM> % of the total fatty acid content.

In an embodiment, wherein the fat particles at least substantially consist of triglycerides of saturated fatty acids having <NUM>-<NUM> carbon atoms, unsaturated fatty acid content generally is <NUM>-<NUM> %, preferably less than <NUM> %, in particular less than <NUM> % of the total fatty acid content.

Free fatty acid content is generally <NUM>-<NUM> %, typically <NUM>-<NUM>%, in particular <NUM>-<NUM>%, preferably less than <NUM> wt.

Transfatty acid content is generally <NUM>-<NUM> %, and typically less than <NUM>%.

In particular good results have been achieved in an embodiment wherein the fat particles at least substantially consist of essentially fully hydrogenated canola oil (rapeseed oil). If desired, the fat particles can be a blend of (fully) hydrogenated canola oil and another (fully) hydrogenated vegetable oil.

Preferably, the fat particles have been obtained by spray-cooling. It was found that with such particles better improvements where obtained than with fat particles having about the same fat composition, obtained in another manner, such as by spray drying.

Advantageously, the number or weight average size of the fat particles is in the range of about <NUM> to about <NUM>. In a particularly preferred embodiment, the number or weight average size of the fat particles is in the range of about <NUM> to about <NUM>.

The particle size distribution usually meets at least one, preferably at least <NUM>, more preferably each of the following criteria:.

Usually, the number average particle size or the weight average particle size of the fat in a method according to the invention is <NUM> or less. In an embodiment, the average particle size is in the range of <NUM> to <NUM>. However, also good results have been achieved with a fat having an average particle size of about <NUM>/<NUM> or less. Usually the average particle size is about <NUM> or more, in particular <NUM> or more.

The fat particles usually have a melting point, as determinable by DSC, in the range of about <NUM> to about <NUM>, preferably in the range of about <NUM> to about <NUM>, more preferably in the range of about <NUM> to about <NUM>. A melting point of more than <NUM>, in particular a melting point of at least <NUM> has been found particularly advantageous to obtain a In a preferred embodiment, the fat particles have a saturated triglyceride content in the range of <NUM>-<NUM> wt. %; more preferably <NUM>-<NUM> wt. %, most preferably <NUM>-<NUM> wt. Such fat particles have been particularly found useful for obtaining tortillas, which can be provided in a stack (e.g. of <NUM>-<NUM> tortillas) with low zippering tendency, a high ease of separation, and without unacceptable deterioration when the tortillas are taken from a stack of tortillas.

The acid number of the fat particles usually is less than <NUM> KOH/kg, preferably less than about <NUM> KOH/kg.

The peroxide number is generally less than <NUM> meqO<NUM>/kg, preferably less than <NUM> meqO<NUM>/kg.

In a preferred embodiment, the fat particles have a saturated triglyceride content in the range of <NUM>-<NUM> wt. %; more preferably <NUM>-<NUM> wt. %, most preferably <NUM>-<NUM> wt. Such fat particles have been particularly found useful for obtaining a tortillas, which can be provided in a stack (e.g. of <NUM>-<NUM> tortillas) with low zippering tendency, a high ease of separation, and without unacceptable deterioration when the tortillas are taken from a stack of tortillas. In particular, good results have been achieved with tortillas having such a high saturated fatty acid content, a trans fatty acid content of <NUM>-<NUM> wt. %, an acid number of less than <NUM> KOH/kg, a free fatty acid content <NUM>- <NUM> % and/or a peroxide number of less than <NUM> meqO<NUM>/kg.

In an alternative embodiment, which has provided satisfactory results, the fat particles have a saturated triglyceride content of less than <NUM> %. For instance, acceptable results have been achieved with a blend of shea oil and coconut oil, comprising about <NUM> to about <NUM> % unsaturated fatty acids. On the basis of these results and the composition of said blend, it has been concluded that also acceptable results are obtainable with fat particles
wherein the fatty acid composition of the fat particles is:.

For this embodiment, the melting point, as determinable by DSC, is relatively low, compared to the particles described herein above, typically in the range of about <NUM> to about <NUM>. Typically, the fat particles of this embodiment have a saturated fatty acid content of about <NUM> to about <NUM>%, a trans fatty acid content of <NUM>-<NUM> wt. %, an acid number of less than <NUM> KOH/kg, a free fatty acid content <NUM>- <NUM> % and/or a peroxide number of less than <NUM> meqO2/kg. Further specific features of this alternative may be based on the description above, mutatis mutandis.

The dough can be made in a manner known per se, with the proviso that said fat particles are included. The fat particles may substitute conventional ingredient fat or part thereof.

The fat particles are generally added in an amount of less than <NUM> wt. % based on total dough, preferably in an amount of <NUM>-<NUM> wt. %, more preferably in an amount of <NUM>-<NUM> wt. % based on the total weight of dough ingredients.

As a further fat ingredient a liquid vegetable oil (liquid at <NUM>) is included. Preferably the preparation of the dough comprises mixing the flour, the fat particles, water and further <NUM>-<NUM> wt. %, in particular <NUM>-<NUM> wt. % of a liquid vegetable oil, based on total dough ingredients.

It is surprising that with the inclusion of a substantial amount of vegetable oil such good results are achieved with respect to a low sticking together of tortillas stapled on each other. In conventional tortillas made with vegetable oils this is a problem, especially on aging of the tortillas.

The shaping of the tortilla dough is usually done after having the dough allowed to rest. Shaping is preferably done by pressing the dough portions under a hydraulic press. The press is preferably heated to between <NUM>° and <NUM>. The skilled person will know to determine a suitable pressure. The press usually exerts <NUM> - <NUM>,<NUM> psi (<NUM>-<NUM> Mpa) of pressure over the plates. Preferably the pressure is <NUM>-<NUM> psi, more preferably <NUM>-<NUM> psi, most preferably <NUM>-<NUM> psi. flattening the ball of dough into the distinctive round, flat tortilla shape. Pressing time (press dwell time) usually is between <NUM> and <NUM> seconds, preferably the pressing time is at least <NUM> sec. Preferably the pressing time is <NUM> sec or less.

After shaping, the tortilla is baked or heated in another manner to obtained a ready-to-consume manner. Heating can be done in a manner known per se, e.g. as described above or in the cited art.

As indicated above, the invention further relates to a flour tortilla obtainable in accordance with the invention.

Fat contents may be chosen in a wide range, as indicated above. Usually, the tortilla has an added fat content of <NUM> wt. In particular, the added fat content may be <NUM> wt. % or less, 10wt. % or less, <NUM> wt. % or less, or <NUM> wt. % or less, relative to flour weight. In a specific embodiment, the fat content is <NUM> wt. % or less, relative to flour weight.

Usually the fat content of the tortilla is at least <NUM> wt. %, in particular at least <NUM> wt. %, more in particular at least about <NUM> wt.

Advantageously the total fat content of a flour tortilla according to the invention is in the range of <NUM>-<NUM> wt. %, in particular in the range of <NUM>-<NUM> wt. %, more in particular <NUM>-<NUM> wt. %, relative to flour weight.

The invention will now be illustrated by the following example.

Flour tortillas were made using the same, conventional, preparation method according to the recipe from Table <NUM>. Different types of fat particles were used in the recipe of the flour tortillas and compared with control tortillas without said fat particles.

Flour Tortillas were prepared using a procedure, known in the art, as described below.

The fat particles were obtained from Friesland Food Kievit Bv (Palm Fat <NUM>), Arthur Branwell & Co Ltd (Palm Fat <NUM>&<NUM>) and Juchem Gruppe (spray-cooled Canola Fat) and exhibited the specifications according to Table <NUM>.

The obtained tortillas were evaluated every month for <NUM> months (by a panel of trained staff) for their zippering (excessive adhesion), 'ease of separation' (from <NUM> to <NUM>), defined as easiness to separate two tortillas from a stack of multiple tortillas on a scale from one to ten, and 'No of usable tortillas', defined as the number of tortillas (from a total of <NUM>) that could still be used after the separation of the tortillas. The averages for ease of separation and the number of useable tortilla along with whether the tortilla exhibited zippering or not are shown in Table <NUM>.

It was found that tortillas containing canola fat showed improved properties regarding all three points mentioned before, compared to tortillas containing other fat particles, no fat particles or containing an emulsifier.

More specifically, the following conclusions were drawn from the experiments:
Tortillas containing palm fat could be more easily separated from one another than the control group tortillas.

When canola fat was used instead of palm fat or emulsifier, both 'ease of separation' and 'No of usable tortillas' were significantly improved.

Moreover, tortillas that were prepared containing canola fat exhibited less zippering than tortillas in which other type of fat particles, no fat particles but with emulsifier or no fat particles or emulsifier were used.

In a further example, flour tortillas were made using the same recipe and process as described in example <NUM>, but using a fat with the following specification in Table <NUM>.

Comprising Lauric acid C12 (<NUM>-<NUM> %), Palmitic acid C16 (<NUM>-<NUM>%), Stearic acid C18 (<NUM>-<NUM>%), Oleic acid C18:<NUM> (<NUM>-<NUM>%), Linoleic acid C18:<NUM> (<NUM>-<NUM>%)
The tortillas were evaluated as per Example <NUM> and the results are shown in Table <NUM>.

Flour tortillas were made using the same recipe and process as described in Example <NUM>, and properties of flour tortillas made with canola fat particles (as in Example <NUM>, average particle size <NUM>-<NUM>) were compared with flour tortillas made with a fraction of the canola fat particles (the fraction with a diameter of <NUM> to <NUM>). Results are shown in Table <NUM>.

Claim 1:
Method for preparing a flour tortilla, comprising
- preparing a tortilla dough comprising mixing cereal flour, wherein the cereal flour is wheat flour or a combination of wheat flour and at least one other flour, water, a liquid vegetable oil and fat particles, which fat particles at least substantially consist of triglycerides of fatty acids having <NUM>-<NUM> carbon atoms;
- shaping the tortilla dough into a tortilla shape; and
- heating the shaped tortilla dough, thereby obtaining the flour tortilla.