US20100255146A1 - Thickening composition improved in viscosity development - Google Patents

Thickening composition improved in viscosity development Download PDF

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US20100255146A1
US20100255146A1 US12/376,616 US37661607A US2010255146A1 US 20100255146 A1 US20100255146 A1 US 20100255146A1 US 37661607 A US37661607 A US 37661607A US 2010255146 A1 US2010255146 A1 US 2010255146A1
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xanthan gum
weight
metal salt
parts
thickening
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Yoshinori Seko
Tomohiro Kimura
Shuji Nishikawa
Yohei Taniyama
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Taiyo Kagaku KK
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Taiyo Kagaku KK
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Assigned to TAIYO KAGAKU CO., LTD. reassignment TAIYO KAGAKU CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: KIMURA, TOMOHIRO, NISHIKAWA, SHUJI, SEKO, YOSHINORI, TANIYAMA, YOHEI
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    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23L—FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
    • A23L29/00—Foods or foodstuffs containing additives; Preparation or treatment thereof
    • A23L29/20—Foods or foodstuffs containing additives; Preparation or treatment thereof containing gelling or thickening agents
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L5/00—Compositions of polysaccharides or of their derivatives not provided for in groups C08L1/00 or C08L3/00
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23L—FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
    • A23L2/00—Non-alcoholic beverages; Dry compositions or concentrates therefor; Their preparation
    • A23L2/52—Adding ingredients
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23L—FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
    • A23L29/00—Foods or foodstuffs containing additives; Preparation or treatment thereof
    • A23L29/20—Foods or foodstuffs containing additives; Preparation or treatment thereof containing gelling or thickening agents
    • A23L29/269—Foods or foodstuffs containing additives; Preparation or treatment thereof containing gelling or thickening agents of microbial origin, e.g. xanthan or dextran
    • A23L29/27—Xanthan not combined with other microbial gums
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
    • C08B37/00—Preparation of polysaccharides not provided for in groups C08B1/00 - C08B35/00; Derivatives thereof

Definitions

  • the present invention relates to compositions for thickening, wherefrom viscosity is readily developed by addition to a target substance which contains water; and the present invention particularly relates to compositions for thickening which improve the development of viscosity when they are utilized for foodstuff applications, whereby there may be readily thickened, for example, soft drinks, dips, sauces, dressings, soups, mousses and jellies, and when they are utilized for applications whereby viscosity is developed by the addition of small quantities, to, for example, foodstuffs for patients who have chewing and swallowing difficulties due to eating disorders.
  • Xanthan gums are soluble in cold water and the solutions obtained display strong pseudoplastic viscosity. It is considered that the solutions form weak networks resembling gels and, for this reason, they have very superior dispersion and emulsion-stabilizing properties for insoluble solid fractions or fats and oils. In addition, they have excellent heat resistance, acid resistance and freezing resistance. Due to their high resistance to various factors, they are used in various industrial fields, such as foodstuffs, cosmetics and pharmaceuticals.
  • xanthan gum wherein the particle size is finer has a larger surface area and, since there are properties whereby lumps are markedly readily produced when the gum is dispersed in water, it is necessary to have utensils for dispersion and dissolution, in order to produce complete hydration. In this manner, there are difficulties associated with verifiably dispersing and dissolving xanthan gum in this manner.
  • Known conventional techniques for dispersing and dissolving a xanthan gum in water are a technique whereby the xanthan gum is dispersed in ethanol, and dispersed in a target substance, such as water, and a process whereby a xanthan gum is vigorously agitated, using an agitation and dispersion device, such as a Disper, so that it dissolves without forming lumps.
  • This is the process used industrially, which requires a certain degree of skill, and is difficult to carry out in an environment wherein there is no such equipment, such as a household.
  • Patent Reference 1 A technique has also been published, (for example, Patent Reference 1), whereby solubility is improved by granulating water-soluble polysaccharides and emulsifying agents as binder solutions, but lumps are produced by the supply process; in addition, xanthan gums may not always be readily soluble, and there is also a desire for compositions which rapidly disperse and dissolve, and wherefrom the desired viscosity may be obtained readily.
  • the present invention relates to:
  • compositions for thickening wherein is contained xanthan gum, with 0.5 parts by weight or more of a metal salt, per 100 parts by weight of xanthan gum, being bound to the surface of a powder of the said xanthan gum; and
  • FIG. 1 is a diagram to illustrate the percentage viscosities achieved for Examples 1 to 4 and Comparative Examples 1 to 4.
  • compositions which can rapidly develop the desired viscosity without producing lumps, as with conventional powders, are sought.
  • properties are strongly desired for xanthan gum, to impart thickness to therapeutic foods and training foods, particularly for persons having difficulty with chewing and swallowing.
  • An object of the present invention is to provide compositions for thickening which can significantly reduce processing times for consumers, by being able to rapidly develop viscosity, when small quantities are added to target substances containing water.
  • the present inventors taking account of such conditions and, as a result of carrying out diligent investigations to improve properties for the development of viscosity and enhance solubility, targeted at the point where, when xanthan gum is dissolved, dissolution is controlled by means of the concentration of salts, discovered: that metal salts will bind to the surface of xanthan gum; that the dissolution of the surface is controlled by modifying the surface of xanthan gum, by, for example, spray drying a metal salt solution; and that xanthan gum which has been dispersed in water, by markedly improving the dispersion properties of xanthan gum in water, rapidly develops viscosity.
  • This phenomenon was inferred to be due to the binding of metal salts to the surface of xanthan gum: no effects to improve the development of viscosity were seen with simply powdering and mixing metal salt powders with xanthan gum.
  • metal salts are used which may be added to xanthan gum, which is permitted as a food additive, and to foodstuffs, pharmaceuticals or the like.
  • the xanthan gum according to the present invention is a natural gum from the fermentation of glucose by the microorganism Xanthomonas campestris: the polysaccharide which accumulates extracellularly is purified and powdered.
  • the metal salts according to the present invention are not particularly restricted, as long as there is at least 1 salt selected from a group which comprises: potassium salts, sodium salts, calcium salts and magnesium salts, which are generally used for foodstuffs or the like.
  • the potassium salts are not particularly restricted, as long as there is at least 1 salt selected from a group which comprises: potassium chloride, monopotassium citrate, tripotassium citrate, potassium hydrogen DL-tartrate, potassium L-hydrogen tartrate, potassium carbonate, tetrapotassium pyrophosphate, potassium poly-phosphate, potassium metaphosphate, tripotassium phosphate, dipotassium hydrogen phosphate, potassium dihydrogen phosphate, potassium sulfate, potassium hydrogen sulfite, potassium gluconate, potassium L-glutamate, potassium acetate, potassium bromide, potassium bromate, potassium nitrate and potassium sorbate; however, since potassium salts have a characteristic bitter taste, it is best to add them so that the quantities bound are those to be described hereafter.
  • the sodium salts are not particularly restricted, as along as there is at least 1 salt selected from a group which comprises: sodium benzoate, sodium chloride, sodium ferrous citrate, trisodium citrate, sodium gluconate, sodium L-glutamate, sodium acetate, sodium bromide, sodium hydrogen carbonate, sodium potassium tartrate, sodium hydrogen tartrate, sodium DL-tartrate, sodium L-tartrate, sodium nitrate, sodium carbonate, sodium lactate, tetrasodium pyrophosphate, disodium dihydrogen pyrophosphate, sodium fumarate, sodium polyphosphate, sodium metaphosphate, sodium hydrogen sulfite, sodium nitrate, disodium hydrogen phosphate, sodium dihydrogen phosphate and trisodium phosphate.
  • a group which comprises: sodium benzoate, sodium chloride, sodium ferrous citrate, trisodium citrate, sodium gluconate, sodium L-glutamate, sodium acetate, sodium bromide, sodium hydrogen carbonate, sodium potassium tart
  • the calcium salts are not particularly restricted, as along as there is at least 1 salt selected from a group which comprises: calcium chloride, calcium citrate, calcium gluconate, calcium L-glutamate, calcium acetate, calcium oxide, non-calcinated bone calcium, calcium hydroxide, calcium carbonate, calcium lactate, calcium dihydrogen pyrophosphate, calcium sulfate, tricalcium phosphate, calcium monohydrogen phosphate and calcium dihydrogen phosphate.
  • the magnesium salts are not particularly restricted, as along as there is at least 1 salt selected from a group which comprises: magnesium chloride, magnesium L-glutamate, magnesium oxide, magnesium carbonate and magnesium sulfate.
  • potassium chloride monopotassium citrate, tripotassium citrate, trisodium citrate, sodium chloride, calcium lactate and magnesium chloride are preferred, and potassium chloride is particularly preferred, from the viewpoint of further improving dissolution properties.
  • the binding according to the present invention describes the particle binding condition of metal salts to the surfaces of xanthan gum particles; the metal salts are in crystalline form and their particles bind to the surfaces of xanthan gum particles, that is, there are included binding of metal salts as binders to the surfaces of xanthan gum particles and binding of the salts as coating agents.
  • particle binding is maintained even with vibrating for 30 seconds on a 60-mesh sieve and it is preferable to have 20% by weight or less, more preferably 15% by weight or less, yet more preferably 10% by weight or less, of fine powder from disintegration due to vibration which will pass through a 60-mesh sieve.
  • the sizes of the xanthan gum and metal salt particles are generally both finer than 60 mesh so that, when the powder from simply mixing xanthan gum and a metal salt powder is sifted with a 60-mesh sieve, 100% of the theoretical quantity of powder passes through the sieve.
  • the processes for binding are not particularly limited: examples which may be given are a process whereby xanthan gum and metal salt particles are bound by wetting and a process whereby a metal salt solution is uniformly sprayed onto xanthan gum powder and dried; it is preferable to carry out drying after spraying of the metal salt solution onto the xanthan gum by means of fluidized drying, from the viewpoint of uniform binding of the metal salt to the xanthan gum.
  • the fluidized drying process is not particularly limited, but it is desirable to carry out the fluidized drying after spraying a from 1% to 20% by weight aqueous solution of a metal salt as a binder.
  • the quantity of a metal salt to bind is unrelated to the valence of the metal: the xanthan gums contained in the compositions according to the present invention are bound with 0.5 parts by weight or more of a metal salt, per 100 parts of xanthan gum, but if there is less than 0.5 parts by weight the quantity of metal salt bound is too low and there is no promotion of viscosity development. In addition, since when 10 parts by weight are exceeded, hygroscopicity increases, this delays the development of viscosity. From these viewpoints, it is preferable to bind 0.5 parts by weight or more to 10 parts by weight or less, more preferably 0.5 parts by weight or more to 7 parts by weight or less, of a metal salt to 100 parts by weight of xanthan gum.
  • the metal salt is a potassium salt
  • the peak viscosity according to the present invention is the numerical value of the viscosity developed when xanthan gum is dispersed and dissolved under ideal conditions. To be specific: when a fixed quantity of a xanthan gum is dispersed and dissolved, the viscosity is seen to have a tendency to rise with the time that elapses from immediately after introducing the xanthan gum into water, but this increasing tendency is no longer observed after a set time has elapsed: the viscosity at this point is taken to be the peak viscosity. For example, when xanthan gum (1 g) is added to water (99 g) at 20° C.
  • the viscosity starts to rise and, when 30 minutes have elapsed, it stabilizes at a fixed level.
  • This viscosity is termed the “peak velocity”.
  • the time required until at least 90% of the peak viscosity has been reached after addition is within 2 minutes, and the actual operating time for a consumer to manufacture a thickening agent by hand-stirring is significantly reduced compared with that for a granular xanthan gum which has not been surface treated, when the time required until at least 90% of the peak viscosity has been reached after addition may be 10 minutes or more.
  • compositions for thickening according to the present invention are not particularly limited, as long as they contain xanthan gums modified by binding with metal salts, but at least 1 substance may be used, selected from, for example, guar gum, enzyme-degraded guar gum, carrageenan, karaya gum, sodium carboxymethylcellulose (CMC), sodium alginate, modified starch and dextrin.
  • the dextrins which are used are not particularly restricted, but, from the viewpoint of dispersibility, a dextrose equivalent (DE) from 6 to 30 is preferable and from 6 to 25 is more preferable.
  • DE dextrose equivalent
  • beverages and foodstuffs which contain the aforementioned compositions for thickening.
  • the beverages and foodstuffs are not particularly restricted, as long as they contain compositions for thickening according to the present invention, and, in addition, the contents thereof are not particularly restricted.
  • the beverages and foodstuffs may be manufactured by adding suitable compositions according to the present invention by processes for manufacture known to those skilled in the art.
  • the present invention will be described by giving specific embodiment Examples of its execution, but the present invention will not be limited by the following Examples.
  • the xanthan gums used in the Examples and the Comparative Examples contain, as salts, potassium (1000 mg), sodium (2400 mg), calcium (60 mg) or magnesium (40 mg) in 100 g of gum.
  • a potassium chloride solution was manufactured by stirring and dissolving potassium chloride (5 g) in ion-exchanged water (95 g) at 50° C.
  • Xanthan gum 100 g was maintained in a fluid state and sprayed with a potassium chloride solution (50 g).
  • a xanthan gum composition (94.3 g) was obtained by fluidized drying of the granules obtained after spraying had finished.
  • the composition was filled to the 100 ml level in a container of that capacity and the weight of the filled granules was determined.
  • the weight of the granules was 41 g and the bulk specific gravity thereof was 0.41 g/ml.
  • the potassium contents of 100 g of each of the granules after fluidized drying, the granules which remained on the 60-mesh sieve and the powder which passed through 60 mesh were determined by means of atomic absorption spectrometry.
  • the potassium contents in the granules and powder were, respectively: 1600 mg in the granules after fluidized drying; 1600 mg in the granules which remained on the 60-mesh sieve (when the potassium contained in the xanthan gum (1000 mg) was deducted, the quantity of potassium salt bound was 600 mg: the quantity bound per 100 parts by weight of xanthan gum was 0.6 parts by weight); and 1600 mg in the powder which passed through 60 mesh: it was ascertained that potassium had uniformly bound to the aforementioned xanthan gum composition.
  • a sodium chloride solution was manufactured by stirring and dissolving sodium chloride (5 g) in ion-exchanged water (95 g) at 50° C.
  • Xanthan gum 100 g was maintained in a fluid state and sprayed with a sodium chloride solution (50 g).
  • a xanthan gum composition (93.1 g) was obtained by fluidized drying of the granules obtained after spraying had finished.
  • the composition was filled to the 100 ml level in a container of that capacity and the weight of the filled granules was determined.
  • the weight of the granules was 46 g and the bulk specific gravity thereof was 0.46 g/ml.
  • Example 2 the results of ascertaining the degree of binding of the granules obtained (20 g) in a similar manner to Example 1 were that 2.26 g of the 20 g of powder passed through 60 mesh and the percentage of xanthan gum with a low degree of binding to sodium chloride was 11.3% by weight. It was verified that the remaining 88.7% by weight was bound.
  • the sodium contents of the granules after fluidized drying, the granules which remained on the 60-mesh sieve and the powder which passed through 60 mesh were each determined by means of atomic absorption spectrometry in a similar manner to Example 1.
  • the sodium contents in the granules and powder were, respectively: 3400 mg in the granules after fluidized drying; 3400 mg in the granules which remained on the 60-mesh sieve [when the sodium contained in the xanthan gum (2400 mg) was deducted, the quantity of sodium salt hound was 1000 mg: the quantity bound per 100 parts by weight of xanthan gum was 1.0 parts by weight]; and 3400 mg in the powder which passed through 60 mesh: it was ascertained that sodium had uniformly bound to the aforementioned xanthan gum composition.
  • a calcium lactate solution was manufactured by stirring and dissolving calcium lactate (5 g) in ion-exchanged water (95 g) at 50° C.
  • Xanthan gum 100 g was maintained in a fluid state and sprayed with a calcium lactate solution (50 g).
  • a xanthan gum composition (92.8 g) was obtained by fluidized drying of the granules obtained after spraying had finished.
  • the composition was filled to the 100 ml level in a container of that capacity and the weight of the filled granules was determined.
  • the weight of the granules was 48 g and the bulk specific gravity thereof was 0.48 g/ml.
  • the calcium contents in the granules and powder were, respectively: 600 mg in the granules after fluidized drying; 600 mg in the granules which remained on the 60-mesh sieve (when the calcium contained in the xanthan gum (60 mg) was deducted, the quantity of calcium salt bound was 540 mg: the quantity bound per 100 parts by weight of xanthan gum was 0.54 parts by weight); and 600 mg in the powder which passed through 60 mesh: it was ascertained that calcium had uniformly bound to the aforementioned xanthan gum composition.
  • a magnesium chloride solution was manufactured by stirring and dissolving magnesium chloride (5 g) in ion-exchanged water (95 g) at 50° C.
  • Xanthan gum 100 g was maintained in a fluid state and sprayed with a magnesium chloride solution (50 g).
  • a xanthan gum composition (91.1 g) was obtained by fluidized drying of the granules obtained after spraying had finished.
  • the composition was filled to the 100 ml level in a container of that capacity and the weight of the filled granules was determined.
  • the weight of the granules was 49 g and the bulk specific gravity thereof was 0.49 g/ml.
  • the magnesium contents in the granules and powder were, respectively: 600 mg in the granules after fluidized drying; 600 mg in the granules which remained on the 60-mesh sieve [when the magnesium contained in the xanthan gum (40 mg) was deducted, the quantity of magnesium salt bound was 560 mg: the quantity bound per 100 parts by weight of xanthan gum was 0.56 parts by weight]; and 600 mg in the powder which passed through 60 mesh: it was ascertained that magnesium had uniformly bound to the aforementioned xanthan gum composition.
  • a comparative product was manufactured under the same conditions as for Example 1, substituting the potassium chloride solution with ion-exchanged water.
  • Xanthan gum 100 g
  • the same quantity of potassium chloride powder 2.5 g
  • the potassium chloride in Example 1 were maintained in a fluid state and sprayed with ion-exchanged water (50 g).
  • a xanthan gum composition (92 g) was obtained by fluidized drying of the granules obtained after spraying had finished. The composition was filled to the 100 ml level in a container of that capacity and the weight of the filled granules was determined. The weight of the granules was 45 g and the bulk specific gravity thereof was 0.45 g/ml.
  • the potassium contents in the granules and powder were, respectively: 1600 mg in the granules after fluidized drying; 1400 mg in the granules which remained on the 60-mesh sieve [when the potassium contained in the xanthan gum (1000 mg) was deducted, the quantity of potassium salt bound was 400 mg: the quantity bound per 100 parts by weight of xanthan gum was 0.4 parts by weight); and 2500 mg in the powder which passed through 60 mesh: since the potassium was not uniformly bound to the above-mentioned xanthan gum composition, it was ascertained that an excess of weakly bound potassium chloride had passed through 60 mesh.
  • a comparative product was manufactured under the same conditions as for Example 2, substituting the sodium chloride solution with ion-exchanged water.
  • Xanthan gum 100 g
  • the same quantity of sodium chloride powder 2.5 g
  • sodium chloride in Example 2 were maintained in a fluid state and sprayed with ion-exchanged water (50 g).
  • a xanthan gum composition 91.5 g was obtained by fluidized drying of the granules obtained after spraying had finished.
  • the composition was filled to the 100 ml level in a container of that capacity and the weight of the filled granules was determined.
  • the weight of the granules was 49 g and the bulk specific gravity thereof was 0.49 g/ml.
  • Example 2 the results of ascertaining the degree of binding of the granules obtained (20 g) in a similar manner to Example 2 were that 4.25 g of the 20 g of powder passed through 60 mesh and the percentage of xanthan gum with a low degree of binding to sodium chloride was 21.3% by weight.
  • the sodium contents of the granules after fluidized drying, the granules which remained on the 60-mesh sieve and the powder which passed through 60 mesh were each determined by means of atomic absorption spectrometry in a similar manner to Example 2.
  • the sodium contents in the granules and powder were, respectively: 3400 mg in the granules after fluidized drying; 2600 mg in the granules which remained on the 60-mesh sieve [when the sodium contained in the xanthan gum (2400 g) was deducted, the quantity of sodium salt bound was 200 mg: the quantity bound per 100 parts by weight of xanthan gum was 0.2 parts by weight]; and 6200 mg in the powder which passed through 60 mesh: since the sodium was not uniformly bound to the above-mentioned xanthan gum composition, it was ascertained that an excess of weakly bound sodium chloride had passed through 60 mesh.
  • a comparative product was manufactured under the same conditions as for Example 3, substituting the calcium lactate solution with ion-exchanged water.
  • Xanthan gum 100 g
  • the same quantity of calcium lactate powder 2.5 g
  • the calcium lactate in Example 3 were maintained in a fluid state and sprayed with ion-exchanged water (50 g).
  • a xanthan gum composition (90.8 g) was obtained by fluidized drying of the granules obtained after spraying had finished.
  • the composition was filled to the 100 ml level in a container of that capacity and the weight of the filled granules was determined.
  • the weight of the granules was 49 g and the bulk specific gravity thereof was 0.49 g/ml.
  • the calcium contents in the granules and powder were, respectively: 600 mg in the granules after fluidized drying; 400 mg in the granules which remained on the 60-mesh sieve (when the calcium contained in the xanthan gum (60 mg) was deducted, the quantity of calcium salt bound was 340 mg: the quantity bound per 100 parts by weight of xanthan gum was 0.34 parts by weight); and 1200 mg in the powder which passed through 60 mesh: since the calcium was not uniformly bound to the above-mentioned xanthan gum composition, it was ascertained that an excess of weakly hound calcium lactate had passed through 60 mesh.
  • a comparative product was manufactured under the same conditions as for Example 4, substituting the magnesium chloride solution with ion-exchanged water.
  • Xanthan gum 100 g
  • the same quantity of magnesium chloride 2.5 g
  • magnesium chloride in Example 4 were maintained in a fluid state and sprayed with ion-exchanged water (50 g).
  • a xanthan gum composition (90.5 g) was obtained by fluidized drying of the granules obtained after spraying had finished.
  • the composition was filled to the 100 ml level in a container of that capacity and the weight of the filled granules was determined.
  • the weight of the granules was 49 g and the bulk specific gravity thereof was 0.49 g/ml.
  • the magnesium contents in the granules and powder were, respectively: 600 mg in the granules after fluidized drying; 400 mg in the granules which remained on the 60-mesh sieve [when the magnesium contained in the xanthan gum (40 g) was deducted, the quantity of magnesium salt bound was 360 mg: the quantity bound per 100 parts by weight of xanthan gum was 0.36 parts by weight]; and 1300 mg in the powder which passed through 60 mesh: since the magnesium was not uniformly bound to the above-mentioned xanthan gum composition, it was ascertained that an excess of weakly bound magnesium chloride had passed through 60 mesh.
  • Example 1 Using a low rotation rate Disper (manufactured by Tokushu Kika Kogyo Company Limited), the granules obtained in Example 1 and in Comparative Example 1 at 20° C. were introduced (1 g at a time) into ion-exchanged water (99 g), with stirring at 600 rpm and stirring was continued for 30 seconds. The mixtures were kept for 2 minutes, 5 minutes, 10 minutes and 30 minutes and the viscosities were determined for each point in time with a Model B viscometer (manufactured by Tokyo Kiki; rotation rate, 12 rpm;, with rotor Number 3 after 30 seconds). The results of the measurements were expressed as percentage viscosities achieved, according to:
  • Example 1 to 4 the degrees of binding of the xanthan gum and metal salts were high and, since the percentage of the surface of xanthan gum powder which had been modified was high, viscosities were developed with excellent dispersion properties for high percentages of xanthan gum, without the production of lumps under gentle stirring conditions, and with uniform dispersion and dissolution.
  • Comparative Examples 1 to 4 the degrees of binding of the metal salts were low, since the percentages of the surfaces of the xanthan gum powders which had been modified were low, the dispersibility was low, lumps were produced during stirring and the peak viscosities were reached after 30 minutes had elapsed.
  • Example 5 Example 6
  • Example 7 Xanthan gum composition
  • the present invention significantly reduces the time taken for xanthan gum to dissolve and, in addition, it is an invention which makes dissolution possible, without conventional dissolution operations requiring skill or special art or equipment in, for example, households.
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Cited By (4)

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Publication number Priority date Publication date Assignee Title
US20160278407A1 (en) * 2013-11-01 2016-09-29 Matsutani Chemical Industry Co., Ltd. Thickening composition and method for producing same
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CN112915069A (zh) * 2021-03-03 2021-06-08 西安医学院 一种快速分散型黄原胶微囊及其制备方法
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