High Quality, Reduced-Calorie Cake Containing Cellulose and Process Thereof

This invention relates to reduced calorie foodstuffs and in particular to a dry cake mix which when reconstituted will produce a greater than 40% calorie-reduced cake of high quality containing at least 40% or more water due to the incorporation of cellulose flour alone or in combination with gums.

For centuries people have been weight conscious and have been striving to maintain diets that will enable them to control their weight. In the past few years research efforts in the low-calorie food area have been greatly accelerated by medical reports disclosing the fact that a great many people in the U.S. are overweight and the adverse consequences associated therewith. Recent research efforts in the food art have been directed primarily to the production of baked goods that would satisfy one's appetite but will not increase one's caloric intake, e.g., materials that will have bulk but which are not digested by human beings. Examples of such foods are those that contain low-calorie bulk fillers, gums or combination of gums and fillers.

U.S. Pat. No. 3,676,150 entitled Low Calorie Yeast Leavened Baked Products issued to Glicksman et al. teaches the production of low-calorie, yeast-levened baked products, specifically a bread which contains 50% or less of the calories normally contained by a conventional bread. This reduction in calories is attributable to the flour which is used in this recipe. The invention is predicated on the use of three materials in specific proportions to constitute a gluten-free flour which will emulate the properties of wheat flour. The flour contains from 1-10% of a cellulosic gum by weight of the flour, a starch component, preferably wheat starch of from 30-70% by weight and alpha-cellulose from 30-70% by weight. The finished baked product has a moisture content from 50-60%.

U.S. Pat. No. 4,109,018 entitled Low Calorie Diet Bread issued to Thompson teaches the production of a low-calorie bread containing wheat gluten, protein, alpha-cellulose, and a hydrophilic gum. The presence of the gum results in extra water retention whereby the dough contains 76% water.

U.S. Pat. No. 4,219,580 entitled Flour Substitutes issued to Torres teaches a method of extending flour whereby up to 70% of the flour is replaced by the substitute flour of the invention yielding a caloric reduction of up to 35%. The substitute flour consists of cellulose, xanthan gum and an emulsifier.

U.S. Pat. No. 3,574,634 entitled Low Calorie Foodstuffs issued to Singer teaches a low-calorie synthetic foodstuff, namely a dough, containing less than 10 or 15% by weight of assimilable carbohydrate and consisting essentially of vital gluten, a non-nutritive edible filler, preferably a cellulosic material, a vegetable gum and water. The dough produced according to the invention will contain a flour component of 50 parts by weight, an inert filler of from 10 to 50 parts by weight, a vegetable gum of from 1 to 10 parts by weight and water at 50 to 100 parts by weight. The caloric content of a typical synthetic bread produced according to the Singer invention will be greater than 50% calorie reduced when compared to a conventional bread.

The key to making a low-calorie baked product is to dilute the recipe with a low/non caloric ingredient (bulk filler, water, etc.), yet, maintain the structure and texture of the full-calorie counterpart. With the exception of the Torres patent, all of the previously mentioned patents disclose a process or a composition for forming a dough to prepare a bread. Cake and bread, although, apparently similar baked goods, depend on two entirely different mechanisms to achieve their respective product structures and textures. Bread is a yeast-leavened system whose matrix is developed by mechanically "working" a wheat flour protein (gluten). The critical consideration in bread is the continuity of the gluten network. When a low-calorie bread is attempted, the calorie reducing dilutant must not interrupt the gluten network and must also be compatible with the living yeast.

Cake is a chemically-leavened system whose matrix is a foam. This foam has the batter as the lamella and a combination of air (from mixing) and carbon dioxide from the baking soda/powder as the gaseous phase. The critical considerations in cake are the surface energy and flow characteristics of the batter. The calorie reducing dilutant must not hinder the lamella forming ability of the batter or as uneven foam structure (or no foam structure) will result.

The present inventors compared cakes made according to their process containing their level of ingredients versus cakes embodying the Torres patent. They found that the examples in the Torres patent produced cakes which were less than 25% calorie-reduced and which contained less than 25% water in the cake as consumed. The Torres cakes were perceived to the excessively dry. Cakes made according to the present invention however were greater than 40% calorie reduced and while they contained 40% or more water on an as-consumed basis, the cakes had a good overall taste perception, one which was not perceived to be overly moist.

Accordingly, it is an object of the present invention to provide a low-calorie cake having a reduction in the caloric content of 40% or more and a moisture content of 40% or more. It is another object of the invention to provide a low-calorie cake which although contains a high amount of moisture, is not perceived to be excessively moist and which provides desirable texture and structure in the finished cake product.

The invention relates to a low-calorie cake and to a dry cake mix which when reconstituted will produce a high quality cake which contains 40% or more water on an as-consumed basis and less than 2 calories per gram. The caloric reduction and high moisture content are attributable to the presence of cellulose flour alone or in combination with a gum or combination of gums. The caloric content of less than 2 calories per gram corresponds to a greater than 40% calorie reduction as compared to a conventional cake. Preferably the caloric reduction will be 50% or greater.

The combination of cellulose flour alone or in combination with a gum or gums may be incorporated into a reduced-calorie dry mix cake formulation which would require only the addition of water and proper mixing by the consumer utilizing a conventional electric mixer. The cake mix after it's combined with water and baked will be greater than 40% calorie-reduced (less than 2 calories per gram) and it will contain at least 40% or more water. This dry mix would contain the percentage of ingredients set forth in Table I expressed as a broad range and as a preferred range.

The dry mix cake formulation may also contain optional ingredients such as salt, vanillin, non-fat milk solids, flavor, color, etc. Also, should one desire an even greater caloric reduction, an artificial sweetener could be added to replace some or all of the sugar component.

The dry mix is reconstituted by the consumer by the addition of from 0.6 to 2.5 parts by weight water for each 1 part of the dry mix. The combination is mixed thoroughly with a household electric mixer for 1 to 5 minutes until smooth and uniform and is then baked at a temperature within the range of from 300.degree. F. to 450.degree. F. (149.degree. C. to 232.degree. C.) from 10 minutes to 60 minutes to produce a bake loss within the range of 5 to 20%. Preferably the dry mix will be comprised of the ingredients in the preferred range as specified in Table I. The preferred bake loss will vary from 8-12%.

The dry cake mix formulations represented in Table I when mixed with water and baked in accordance with the above directions will produce a finished baked cake which will contain the following percentages of ingredients as set forth in Table II.

Alternatively, instead of using the dry cake mix, a batter formulation could be prepared from the individual ingredients. This batter formulation when baked would produce the high quality, low-calorie cake containing the same percentage of ingredients represented in Table II. The batter formulation (prebaked) contains the following ingredients set forth in Table III expressed in a broad and preferred range on a by weight total basis of the batter formulation:

Ideally the batter formulation should be mixed thoroughly until smooth and uniform. The batter viscosity should fall within the range of 15,000 to 50,000 cps., preferably from 20,000 to 30,000 cps. as measured by a Brookfield Model HAT Viscometer using T-bar B (36 mm.) at 5 RPM.

A novel feature of the low-calorie cake of the present invention is that even though it contains 40% or more water on an as-consumed basis it is perceived of as being somewhat "dry" and it is not perceived to be excessively moist, or gummy. Additionally, the cake product does not possess a gritty mouthfeel as was characteristic of cellulose cakes made in the past.

The high-quality reduced-calorie cake contains cellulose flour in combination with a gum or gums. Good quality cakes have been made incorporating the following gums in combination with cellulose flour: carrageenan, guar, gum arabic, locust bean gum, tragacanth, karaya, hydroxypropylcellulose, methylcellulose, carboxymethylcellulose, xanthan, pectin, alginates, agar and similar hydrocolloids.

For purposes of this invention, leavening agent is defined as a substance or substances used to cause gas permeation throughout a batter or dough, thereby, lightening and raising the batter or dough and its subsequent product. Examples of leavening agents include sodium bicarbonate (baking soda) and sodium aluminum phosphate (Levair-Stauffer Chemical Co.).

An emulsifier is defined as surface active agent that causes the integral, uniform mixing of the fat and water components of a batter or dough. The emulsifier also lowers the surface tension of the batter allowing for greater gas incorporation. Examples of suitable emulsifiers include polyoxyethelene (20) sorbitan mono-oleate (Tween 80-ICI Americas, Inc.), sodium stearyl-2-lactylate (Emplex-Patco), and mono and diglycerides.

This invention is further illustrated but not limited by the following examples:

The following formulation was used to make a 50% calorie reduced cake utilizing cellulose flour as the bulking agent in combination with a gum.

The dry cake mix was prepared according to the following procedure. The sugar and shortening and Tween 80 were creamed together in a Mixmaster bowl. The cake flour, cellulose flour, egg white solids, baking soda, Levair, carrageenan, Emplex and salt were dry blended, then sifted twice. The cream phase and dry blend were added together in a 5 quart Hobart bowl and mixed with the paddle for 5 minutes at speed #2 stopping to scrape down the sides and bottom at 1 minute intervals.

Place the dry mix in a dry mixing bowl. While mixing at the lowest speed (speed setting #1), add water. Continue mixing until combined. Then mix at high speed for 30 seconds. Scrape down the sides and bottom of the mixing bowl. Mix at high speed for 30 seconds longer and then scrape down once again. Mix at high speed for 1 minute and then scrape down sides and bottom of the bowl. Finally mix at low speed for 1 minute. Pour the batter into a greased 8 inch baking pan. Bake for 30 minutes at 350.degree. F. (177.degree. C.).

The finished cake was of excellent overall quality and had a caloric value of 1.88 calories/gram as compared to conventional white cake with 3.75 calories/gram (U.S.D.A. Handbook #8). The moisture content of the cake on an as-consumed basis was 49%. The low-calorie cake contained the following percentages of ingredients on an as-consumed basis.

A 70% calorie reduced cake containing over 50% water on an as-consumed basis was prepared using the following formula:

The dry cake mix is prepared in a similar manner as discussed in Example 1.

The cake is prepared in a similar manner as described in Example 1. Specifically after mixing with water, 500 grams of the batter was poured into a lined 8 inch cake pan and baked at 350.degree. F. (177.degree. C.) for 40 minutes resulting in a 13% bake loss.

The finished baked cake had a height of 45 mm. and possessed an excellent structure, texture and appearance. The finished cake had a caloric value of 1.12 calories/gram as compared to conventional white cake with 3.75 calories/gram (U.S.D.A. Handbook #8).

The resultant cake contained the following percentages of ingredients on an as-consumed basis:

A reduced calorie, dry mix cake formulation was prepared which contained the following ingredients expressed in both grams and percent of the total formulation, dry basis.

The Dry Cake Mix is prepared according to the following procedure. The cake flour and cellulose flour were combined, mixed well and sifted twice. The dried egg white, non-fat dry milk solids and sodium bicarbonate were dry blended together. The Emplex, Levair, guar gum, salt and vanillin were dry blended and sifted twice. The beta-carotene was dissolved in oil. The sucrose was placed into a mixing bowl of a 5-quart Hobart mixer. The Atmos 1069 and beta-carotene--oil mixture was added. The Atmos and oil was dispersed by mixing at low speed (#1) for one minute. Then the mixing speed was increased (to speed #3) for 5 minutes. The side and bottom of the bowl was scraped down at 1 minute intervals. The speed was reduced (speed #2) and the cellulose flour--cake flour blend was added slowly and mixed thoroughly. Frequently during this procedure the sides and bottom of the bowl were scraped. In a similar fashion the egg white, milk solids and bicarbonate dry blend was added. Thereafter the mixing bowl was covered to prevent dusting and the speed was increased (to speed #3) for 5 minutes, the sides and bottom of the bowl were scraped and mixing continued at a slower speed (speed setting #2) for an additional two minutes.

Place the dry mix in a dry mixing bowl. While mixing at the lowest speed (speed setting #1), add water. Continue mixing until combined. Then mix at high speed for 30 seconds. Scrape down the sides and bottom of the mixing bowl. Mix at high speed for 30 seconds longer and then scrape down once again. Mix at high speed for 1 minute and then scrape down sides and bottom of the bowl. Finally mix at low speed for 1 minute. Pour the batter into a greased 8 inch baking pan. Bake for 30 minutes at 350.degree. F. (177.degree. C.).

The finished cake was of excellent overall quality and had a caloric value of 1.88 calories/gram as compared to conventional white cake with 3.75 calories/gram (U.S.D.A. Handbook #8). The moisture content of the cake on an as-consumed bases was 45% and contained the following percentage of ingredients: