FR2522250A1 - Applying sugar-free coating to chewing gum and sweets - by coating with aq. soln. of sweet hygroscopic cpd. and then with powder of the cpd. - Google Patents

Abstract

A sugarless coated comestible is prepd. by applying to cores of the comestible a coating syrup comprising an aq. soln. of a normally sweet hygroscopic material (I), a binder, an antiadhesive cpd. and a dispersion agent. This is followed by applying a powdery compsn. comprising (I) in dry form, so that at least a part of the latter is absorbed on the syrup to form a coating on the core. The process is partic. for applying a coating free from sugar and contg. sorbitol in crystalline form to chewing gums, sweets and medical and therapeutic prods. in pill or tablet form.

Description

Improved process for the application of a sugar-free coating, author of chewing gum and sweets.

 The invention relates to an improved process for applying a sugar-free coating containing sorbitol in crystalline form to chewing gum, candy and medicinal and therapeutic products in the form of pills or tablets, as well as all of the above edibles having such a sugar-free coating.

 Coated chewing gum has long been appreciated by young and old alike. The coatings generally used are based on sugar and that is why they are not used to coat sugarless gums. The sugar-based coatings can be applied to chweing gum by methods such as those described in US Patents 3,354,767, 2,304,243, 2,460,698 and 3,208,405.

 US Patent 4,127,677 describes a chewing gum coated with xylitol containing 95 to 99.3 ss of xylitol and which can be used as a coating for sugarless gums. However, for various reasons, chewing gums containing xlrlitol have not been favorably received by consumers.

 Sorbitol, long used as a plasticizer and sweetener, has been suggested as a sugar substitute in the formation of sugar-free coatings for sugar-free chewing gum. Unfortunately, however, it has been found that when sorbitol is applied as an aqueous coating solution to chewing gum hearts, sorbitol does not recrystallize to form a thin crystalline layer. In addition, the chwing gum hearts coated with sorbitol stick together, forming undesirable agglomerations.

There is therefore a need on the market for a sugar-free coating, preferably free of xylitol, based on the use of sorbitol.
US Patent 4,238,510 describes a process for forming a sugar-free coating, preferably comprising crystalline sorbitol, on chewing gum, candy and generally in the preparation of sugar-coated pills and other solid forms, a process which overcomes the disadvantages associated with the application of coatings containing sorbitol for the formation of a uniform coating without sugar having a good appearance and a good release of the taste and which can be bitten and chewed like a soft crystal. The technique used to form a sugarless coating on a solid form to be coated (hereinafter called hearts) consists in applying to hearts a first coating syrup containing a sweetener such as sorbitol and / or another sweetener other than sugar, for example mannitol or a hydrogenated starch hydrolyzate, an adhesive or binder component and a film-forming component, so as to coat the hearts with the first coating syrup, then to apply to the coated hearts of the first coating syrup, a powdering mixture comprising one or more dekinders such as those used in the first coating syrup, in powder form, a moisture-absorbing component such as mannitol, a non-stick component such as calcium carbonate and a dispersing agent, such as titanium dioxide, then, preferably, to apply a second eurobing syrup to equalize the coating of the hearts and give them gloss, the second coating sirep comprising generally ingredients similar to that present in the dusting mixture but in the dispersed state in water.

 It appeared that the above technique was excellent but, however, it usually required two different types of coating syrups to be obtained to obtain the desired coating. Consequently, a sugar-free interrogation technique in which a single coating syrup is used would be a considerable advance over the above-mentioned prior art.

 The subject of the invention is a process for preparing an edible coated without sugar, characterized by the following steps: applying to hearts of the edible an enrebate syrup comprising an aqueous solution of normally soft hygroscopic material, a binder, a compound non-stick and a dispersing agent and apply to the hearts thus treated a coating powder mixture comprising said normally soft hygroscopic material in dry form, at least part of the dry hygroscopic material being absorbed on the enrobago syrup applied to the hearts may form a coating on the heart. According to the invention, a perfectian process known as * in a single step "or" with a single syrup "is proposed, allowing a sugar-free coating to be closed on a solid form to be coated (hereinafter called hearts) and comprising the following steps :: apply a coating to the hearts which contains a sweetener such as sorbitol and / or another sweetener other than sugar, for example mannitol or a hydrogenated starch hydrolyzate, an adhesive or binder constituent, a film-forming constituent, a non-stick constituent - sif (or filler) and a dispersing agent, so as to coat the hearts of the coating syrup, then apply to the hearts coated with the coating syrup a powder mixture comprising one or more sweeteners such as those used in the coating syrup, in powder form, a moisture-absorbing component, a non-stick component and a dispersing agent.

 The steps for applying the coating syrup and the powdering mixture are repeated as many times as necessary, in order to accumulate a desired weight and thickness of coating on the cores.

In practicing the process of the invention, the coating syrup is formed in the form of an aqueous solution comprising
a) the sweetener (or bulking agent),
b) the adhesive or binder component
c) a non-stick component (filler) and
d) a dispersing agent.

 The sweetener (or bulking agent) (a) may be present in an amount of about 30 to 70%, preferably about 40 to 60% of the weight of the coating syrup the binder (b) may be present in a proportion of '' about 5 to 30%, preferably about 10 to 25% of the weight of the coating syrup g the non-stick agent (filler) (c) may be present in an amount of about 3 to 15% and preferably at about 3 to 10% by weight of the coating syrup and the dispersing agent (d) may be present at about 2 to 12%, preferably about 3 to 7% by weight of the syrup coating. The coating syrup also contains about 20 to 70% and preferably about 25 to 65% water.

 The coating syrup Acts as a moist base layer to which the sweetener or dry bouffant subsequently deposited (present in the dusting mixture) can adhere or on which it can be absorbed to form the desired coating .

 Examples of sweeteners or bulky agents suitable for use in coating syrup can include almost any known sugarless sweetener, for example any of the sugar alcohols such as sorbitol, xylitol, mannitol and their mixtures, sorbitol being preferable, as well as maltitol, isomaltitiol, hydrogenated amiden hydrolysates such as those described in US Patent Reissue No. 26,959 as well as various syrups and / or powders of hydrogenated glucose which contain sorbitel, hydrogenated disacharides, trihydrogenated to hexahydrogenated saccharides and hydrogenated higher polysaccharides, as well as the modified starch hydrolysates described in US Pat. No. 3,556,811.

 Hydrogenated glucose syrups and / or powders can be produced by catalytically hydrogenating normal glucose syrups (converted using acids and / or enzymes) to the point where all of the glucose dos saceharide end groups are reduced to alcohols , i.e. dextrose on sorbitol. In the case of hydrogenated glucose syrups, the total content on selides will vary from about 72 to 80%, these solids comprising about 4 to 20% of sorbitol, about 20 to 63% of hydrogenated disaccharides (that is to say of maltitel), approximately 15 to 45% of trihydrogenated saccharides with to heptahydrogenated and approximately 35 ss of saccharides more than heptahydrogenated.

 Other duloiflants or bulking agents suitable for use in the coating syrup include, but are not limited to, the saccharin free acid, the sodium, calcium and ammonium salts of the saccharin, the cyclamates , dihydrochalcones, glycyrrhizin, L-aspartyl-L-phenylalanine methyl ester and mixtures thereof.

 The adhesive or binder component used in the coating syrup helps to initially bind the sweetener to the edible to be coated. Examples of suitable binders here include gum arabic, lanthanum gum, tragacanth, tapioca dextrin or modified food starch, gum arabic being preferred.

 Suitable moisture absorbing compounds herein include mannitol or dicalcium phosphate, mannitol being preferable, especially when sorbitol is used as a sweetener.

 Examples of the non-stick compound which can also act as a filler in the coating syrup as well as in the powdering mixture include calcium carbonate, talc or magnesium trisilicate, calcium carbonate being preferred.

 Examples of the dispersing agent which can be used in the coating syrup as well as in the dusting agent include titanium dioxide, talc or other non-stick compounds mentioned above, with titanium dioxide being preferred. .

 A faculative but important constituent of the coating syrup is the film-forming agent which makes it possible to deposit a practically uniform layer of the sweetener on the edible to be coated. Examples of suitable film-forming agents include gelatin, methylcellulose, hydroxypropylcellulose, ethylcellulose, hydroxyethylcellulose and / or carboxymethylcellulose.

The dusting mixture comprises a dry powder mixture containing
a) a sweetener (or bulking agent) similar (and preferably identical) to that used in the coating sirep,
b) a moisture absorbing component,
c) a self-adhesive component (or filler) and
d) a dispersing agent.

 The weight ratio b) s a) is between approximately 5: 1 and 30: 1, the weight ratio c) t a) between approximately 2t1 and the ratio d) s a) between approximately 0: 1 and 5: 1. Thus, the sweetener a) is used at a rate of about 40 to 90% and preferably about 60 to 85% of the weight of the dusting mixture, using the moisture-absorbing component b) at a rate of about 5 at 30% and preferably about 8 to 20% of the weight of the powder mixture, the non-stick component c) is used at a rate of about 2 to 20% and preferably about 5 to 15% of the weight of the mixture powdering agent and the dispersing agent is used in an amount of about 2 to 12% and preferably about 4 to 9% of the weight of the powdering mixture.

 As noted, the sweetener (bulking agent) present in the dusting mixture may include any of those used in the coating syrup and which are noted above. The preferred dulcifiaut present in the powdering mixture is sorbitol.

 In preferred embodiments, the weight ratio between the solids present in the coating syrup and the dusting mixture will be between approximately 5: 1 and 20: 1.

 Generally, it may be that a single deposit of the coating syrup and a single deposit of the powdering mixture are not sufficient to give the quantity and the desired thickness of coating deposited on the edible. As a result, it is usually necessary to apply a second coat, a third coat or more of the coating syrup as a dusting mixture in order to bring the desired weight and thickness of the coating.

Toutefeis, before applying the following layers of first coating syrup, the layers of coating sirep previously applied are allowed to dry, for example by gently passing air at a temperature of about 20 to 31 C and at a relative humidity of around 20 to 40%, with a flow rate (91 cm tray) of around 11 to 14 m3 / min. For example, in the coating of chewing gum, the application of the coating syrup and the powdering mixture is continued until the average weight of the piece of chewing gum reaches approximately 90% of the desired coated weight. Thus, if the coating is to form approximately 35% of the weight of the coated chewing gum tablet, it may be necessary to apply 10 to 12 layers of coating syrup and 7 to 9 layers of mixing mixture.

The last three layers should preferably be formed from eurobage syrup only, without powder mix.

 It will be understood that the number of applications required will also vary according to the quantity of solids present in the coating sirep, the quantity of powdering mixture used and the type of edible to be eurobed.

 Once the en has applied a sufficient amount of coating to the mercers of inedible creber, the coating of the pieces will be smooth and and moreover finished without the need to apply a second coating syrup in one finishing sirep.

 A firm liquid aroma can be added to the coating sirep, while the can can be added to the powdering mixture of spray-dried aromas.

Preferably, the flavor will be applied after applying a first coating syrup and a first powdering mixture.

 In the case where the food to be coated is chewing gum, add a flavor to the base of the gem. The aroma centered in the gum core will be present in an amount of about 0.5 to 1.5% and preferably about 0.7 to 1.2% of the weight of the heart.

The aroma centered in the coating will be present in an amount of about 0.5 to 5% and preferably about 1.25 to 4% of the weight of the coating. This aroma can include essences from plants, leaves, flowers, fruits, etc. Representative aromatic essences of this type include citrus essences such as lemon essence, erange essence, lime essence, grapefruit essence, fruit essences such as apple essence , pear essence, peach essence, the absence of strawberry, apricot essence, raspberry essence, cherry essence, plum essence, pineapple essence as well as the essential oils following the essence of peppermint, the essence of spearmint, the essence of cloves, the essence of laurel, the essence of anise, the essence of eucalyptus, the essence of thyme, the essence of cedar leaves, the essence of cinnamon, the essence of nutmeg, the essence of sage, the essence of bitter almonds, the essence of breakage and methyl salicylate (essence of wintergreen). It is also possible to incorporate into the chewing gum of the invention various synthetic flavors, for example mixed fruit flavors, with or without conventional preservatives.

 Sweeteners which are suitable here and which may be present in the gum core and / or the coating may include natural or synthetic sugar substitutes.

 When used, the synthetic sweeteners can be present in the heart in an amount of about 0.04 to 2% and preferably about 0.4 to 0.8% of the weight of the chewing gum. Examples of synthetic sweeteners which are included here include saccharin free acid, sodium, calcium or ammonium salts of saccharin, cyclamates, dihydrochalcones, glycyrrhizic acid and its salts, methyl ester of L-aspartyl-L-phenylalanine, sodium or potassium sol 3,4-dihydre-6-methyl-1,2,3-exathiazine-4-one ("Acesulfone-K) dioxide (2,2) and their mixtures.

 When used, natural sugars and / or natural sugar substitutes may be present in the heart, in an amount of from about 0.05 to 90, and preferably from about 10 to 85% of the weight of the chewing -gum.

Natural sweeteners of this kind which are suitable here include sugar alcohols such as sorbitol, xylitel, mannitol, isomaltitol or maltitol.

If desired, sugars such as sucrose or dextrose can also be used.

 The gum base will be present in an amount of about 10 to 60% and preferably about 19 to 45% by weight.

 In general, the gum base is prepared by heating and mixing various ingredients such as natural gums, synthetic resins, waxes, plasticizers, etc., in a well known manner.

Typical examples of the ingredients found in a chewing gum base are masticatory substances of synthetic origin such as the styrene / butadiene copolymer, the isobutylene / isoprene copolymer, polyisobutylene, polyethylene, petroleum wax, polyvinyl vinyl as well as masticatory substances of natural origin such as rubber latex solids, chicle, crown gum, nispero, rosidinha, jelutong, pendare, perilo, niger gutta, tunu etc.

The elastomer or the matting substance will be used in an amount of about 5 to 15%, preferably about 8 to 12% and more preferably about 9 to 11% of the weight of the gum base composition.

 The gum base can also include solvents, non-sticks, waxes, plasticizers, lubricants, fillers, emulsifiers, dyes, antioxidants and / or texturing agents, bulking agents and other conventional ingredients which will appear to those skilled in the art. . Examples of typical gum bases usable here are described in US Patents 3,052,552 and 2,197,719.

 As noted, in addition to chewing gum, the edible to be coated may include any edible solid such as candy, including hard and candy, berlingots, peanuts, other confectionery products, as well as pills , tablets or other solid dosage forms for medicinal or therapeutic use.

A preferred coating according to the invention, intended for sugar-free chewing gum, will have the following composition:
Ingredient Part by weight rela
serbitel coating 43 to 90 mannitol 2 to 25 arabic gem 0.25 to 3 calcium carbonate 2 to 20 titanium dioxide 0.1 to 5
The following examples represent preferred embodiments of the invention.

Examples 1 to 3
Sugar-free sugar-free chewing gum with the core as shown in Table I and chewing gum as shown in Table II below is prepared in the following manner.

Table I
Composition of the heart (present in all examples of chewing gum).

Ingredient parts on weight gem base 24 sorbitol powder 49 liquid serbitol (68 to 70% serbitol) 25 yelkin 0.5 flavor 2
Table II
Composition of various coating mixes necessary to form the coating on hearts of Table I, parts in weight.

Example 1 2 3
Coating syrup gum arabic solution (48%) 18 20 24
gelatin solution (20%) 0 30 15
liquid sorbitol (68 to 70%)) 55 30 60
hydrogenated amiden hydrolyzate - 30 10
mannitol 7 6 5
calcium carbonate powder 7 8 5
titanium dioxide powder 3 4 6
hot water (71 C) 9 11 13
dye (if necessary)
Powder mixture
serbitel (crystalline powder) 70 70 70
mannitol powder 15 13 13
can contain calcium carbonate 7.5 10 5. titanium dioxide powder 7.5 5 10
we prepare hearts as follows
The gum base is melted and kept at a temperature of 66 to 79 C. We add plasticizer and then slowly add the solid sugar alcohols with stirring. Ensmite, add liquid liquid and stir the mixture until it is homegene.

Slowly add alcohol and then artificial and / or natural sweetener (if applicable).

 When spray-dried aromas are used, add them with artificial sweeteners.

 The above mixture is stirred until it is homegene, cooled, rolled up, striped and formed into individual pieces.

 To prepare the coating mixture, the various ingredients are mixed, heating if necessary, to close a well-mixed suspension.

 To prepare the filling mixture, the various ingredients are simply mixed until a practically homegene mixture is obtained.

 Place the rubber core 7 to coat in a normal teurnaut pan. The gum beads are dusted with cold, dry air.

The mixed coating syrup, heated to 49 ° C., is applied to the pieces. After approximately 2 to 3 minutes, the dusting mixture is applied to the pieces of gum coated with the syrup. they are allowed to cool for 2 minutes to absorb the powder mixture. They are then dried by contact with gentle flowing air at approximately 260C and a relative humidity of approximately 30%, the air flow rate (91 cm tray) being approximately 13 m3 / m @ for 2 minutes.

 The above steps are repeated until the weight of an average piece reaches approximately 90 to 90% of the desired coated weight. For example, if the desired coated weight is 35%, it takes 7 to 10 applications of powder mixture (the last three applications are made with another coating syrup, without the powder mixture) to reach an average unit weight do 1.5 6.

 We can then polish and otherwise finish the pieces of gum thus coated, using conventional means, to obtain a chewing gun without sugar coated with chewing gum which is soft to chew, has a very sweet taste and good release properties. of aroma.

Examples 4 and 5
candies without @ u @ re with sugar-free coating having a core as indicated in Table III below and a coating as indicated in Table II of Example 1 are prepared by the following method.

Table III
Composition of the heart
Ingredient quantity, gone
by weight hydrogenated starch hydrolyzate syrup (78% solids, comprising 6% sorbitol and 50% mannitol). 97 sorbitel syrup 2 malic acid 1 cherry flavor 0.25 color 0.4
The hydrogenated starch hydrolyzate syrups and the serbitol syrups are brought to the top of a mixing cauldron and cooled to between 166 and 168 C. The dye is added between 138 and 149 C. The mixture is lowered to 847 mbar and maintains it under vacuum for 10 minutes. The hot mixture is then transferred to a mixing table where the malic acid and the arone are added while mixing. The candy mixture is allowed to cool between 71 and 77 C and in the form of tablets.

 The coating is applied as described in Examples 1 to 3 to obtain a sugar-free candy coated with sugar-free, of pleasant taste.

 Similarly to what is described in Examples 1 to 5, any type of pill or tablet or other solid form can be coated with a coating without sweat according to the invention.

Claims (11)

 1.- Process for the preparation of an edible coated without ocher, characterized by the following steps: applying to this core of the edible a coating syrup comprising a selwtien @queuse of normally soft hygienic material, a binder, a non-stick compound and n dispersing agent and apply to the hearts thus treated a coating powder coating embedding said hygroscopic material normally deuce only dry firm, at least part of the dry hygroscepic material being absorbed on the coating syrup applied to the hearts to form an embedding on the heart.  2. Preceded according to claim 1, characterized in that the edible is a chewing gum or a candy, and that the sirep of eurobage applied constitutes an aqueous solution comprising approximately 30 to 70% by weight of a hygroscepic material normally deuce, other than sugar, which can be mannitol, maltitel, isomaltitel, hydrogenated starch hydrolyzate or a mixture of these, approximately 5 to 30% by weight of a binder, approximately 3 to 15% by weight of a non-stick compound and about 2 to 12% by weight of a dispersing agent.  3.- Preceded according to one of claims 1 and 2, characterized in that it repeats, if necessary, the steps of applying the coating syrup and the powdering mixture in order to accumulate a coating of desired thickness on the hearts.  4. Preceded according to claim 3, characterized in that, in addition, the coating syrup is applied so as to constitute the sweet with the last four layers, on the hearts previously coated with the syrup bt of the powdering mixture, the syrup applied on last place comprising the normally soft hygroscopic material and used to equalize and make shiny the coating of normally soft hygroscopic material previously applied to the hearts.  5.- Method according to one of claims 1 to 4, characterized in that the dusting mixture contains a moisture absorbing agent, a non-stick agent and a dispersing agent.  6.- Method according to one of claims 1 to 5, characterized in that the coating syrup comprises liquid sorbitel, a solution of gum arabic, calcium carbonate, titan dioxide and mannitol and that the powder mixture includes sorbitol powder, mannitol powder, calcium carbenate and titanium dioxide.  7.- Method according to one of claims 1 to 6, characterized in that the heart enst a chewing gum in a candy without @ucre.  8.- Preceded according to one of claims 1 to 7, characterized in that the syrup further comprises a film-forming agent formed of gelatime, methylcellulose, hydroxyprepylcellulose, ethylcellulose, hydroxyethylcellulese and / or carboxymethylcellulose .  9. Solen method one of claims 1 to 5, characterized in that the binder used to communicate + cohesion to the coating ingredients is gum arabic, xauthan gum, tragacanth, gum tapioca dextrin or modified food starch.  10.- Method according to one of claims 1 to 5, characterized in that the non-stick agent is calcium carbonate, talc or magnesium trisilicate.  11.- Method according to one of claims 1 and 2, characterized in that the heart is formed of chewing-gun and that the coating applied is formed of sorbitol as hygroscopic material, gum arabic as binder, calcium carbonate as a nonstick diluent compound, titanium dioxide as a dispersing agent and mannitol as a moisture absorbing agent.