Chewing gum base, preparation method thereof and chewing gum

Abstract

The invention relates to the technical field of food-grade gum base production, in particular to a chewing gum base, a preparation method thereof and chewing gum. According to the preparation method provided by the invention, the chewing gum base raw materials with specific components are pre-dispersed through freezing and grinding, so that the characteristic that the material structure and composition information are retained by freezing and grinding can be fully exerted, and the chewing gum base raw materials with the specific components are fully compatible and uniformly mixed; the chewing gum base obtained by mixing has high dispersing performance and chewing performance. The preparation method provided by the invention can be used for preparing the chewing gum base with high dispersing performance and chewiness. Tests show that the chewing gum base prepared by the preparation method provided by the invention has obviously better dispersion performance and chewiness performance aiming at a specific gum base formula.

Description

Technical Field

[0001] The invention relates to the technical field of food-grade gum base production, in particular to a chewing gum base and a preparation method thereof and chewing gum. Background Art

[0002] As a chewable candy, chewing gum has a long history and powerful functions. Chewing gum is mainly divided into water-soluble food additives and water-insoluble gum base. After entering the mouth and chewing, food additives are dissolved, and the residue that cannot be absorbed by the human body is called gum base. Gum base is the substance that determines the performance of chewing gum. It is mainly composed of elastomers and resins. Under the action of ester gum, etc., the gum base of chewing gum is given moderate viscoelasticity and hardness, which makes it have a good taste and longer chewing time. Therefore, the gum base mainly provides chewing properties in the chewing gum formula. The uniformity of the product directly affects the chewing experience of chewing gum. Therefore, the dispersibility and compatibility of the gum base are particularly critical.

[0003] At present, food-grade butyl rubber additives and fillers are mainly powdered substances, and their mixing uniformity and compatibility are particularly important. Through the structural design of butyl rubber products, it is compatible with additives and fillers. In the current mixing technology process, the advantages of using internal mixers for mixing are simple operation and good mixing effect, but the disadvantages are poor equipment airtightness and easy leakage of rubber-grade additives. The advantages of using open mills for mixing are large shear force and good mixing effect, but the disadvantages are that food-grade additives are viscous, easy to stick to the roller, and poor processability. The advantage of using kneaders for mixing is good equipment airtightness, but the disadvantages are small shear force, long mixing time, sometimes some fillers hang on the wall and cannot participate in mixing, and the mixing effect is poor. The advantages of using screw extruders for mixing are large shear force and good mixing effect, but the disadvantage is that the rubber base needs to be mixed at high temperature for a long time, and screw extruders cannot meet long-term mixing. Summary of the invention

[0004] In view of this, the technical problem to be solved by the present invention is to provide a method for preparing a chewing gum base. The preparation method provided by the present invention can prepare a chewing gum base with high dispersibility and chewing properties.

[0005] The present invention provides a method for preparing a chewing gum base, comprising the following steps:

[0006] S1) freeze-grinding a chewing gum base raw material to obtain a pre-dispersed sample;

[0007] S2) mixing and kneading the pre-dispersed sample obtained in step S1) to remove gum to obtain a chewing gum base;

[0008] The chewing gum base raw materials include:

[0009] 40-80 phr of an elastomer; the elastomer is selected from one or more of butadiene-styrene copolymer, butyl rubber, polybutadiene, polyisobutylene and vinyl polymer elastomer;

[0010] 80-120 phr polyvinyl acetate;

[0011] 0~20 phr of plasticizer;

[0012] 80-100 phr of an emulsifier; the emulsifier is selected from distilled monoglycerides, acetic acid esters of monoglycerides and diglycerides, citric acid esters of monoglycerides and diglycerides, lactic acid esters of monoglycerides and diglycerides, monoglycerides and diglycerides, polyglycerol esters of fatty acids, cetearyl alcohol polyether-20, polyricinoleic acid polyglyceryl esters, propylene glycol esters of fatty acids, polylaurin, cocoyl glyceryl, gum arabic, acacia gum, sorbitan monostearate, sorbitan tristearate, sorbitan monolaurate, sorbitan monooleate, sodium stearoyl lactylate, calcium stearoyl lactylate, diacetyl tartaric acid esters of monoglycerides and diglycerides, tricaprylic-capric glyceride I medium chain triglyceride, dioleic acid glyceride, oleic acid glyceride, lactic acid glyceride of fatty acids, palmitic acid lactic acid One or more of glyceryl esters, stearic acid glyceryl, lauric acid glyceryl, dilauric acid glyceryl, monoricinoleic acid glyceryl, monostearic acid triglyceride, distearic acid hexaglyceryl, monostearic acid decaglyceryl, dipalmitic acid decaglyceryl, monooleic acid decaglyceryl, polyglyceryl 10 hexaoleate, medium chain triglycerides, caprylic / capric triglyceride, monostearic acid propylene glycol ester, polysorbate 20, polysorbate 40, polysorbate 60, polysorbate 80, polysorbate 65, distearic acid hexylglyceryl, monostearic acid triglyceride, Tween, spans, stearoyl lactylate, calcium stearoyl-2-lactylate, sodium stearoyl-2-lactylate, lecithin, ammonium phosphatide, sucrose esters of fatty acids, sucrose glycerides, propane-1,2-diol esters of fatty acids, triacetin, and rosin glyceride;

[0013] 10~50 phr wax;

[0014] and 40~100 phr of filler reinforcement.

[0015] The elastomers of the present invention can provide chewing gum with elastic adhesive properties, which vary depending on the chemical structure of the component and how it is combined with other components. Elastomers suitable for use in the present invention are selected from one or more of butadiene-styrene copolymers (SBR), butyl rubber, polybutadiene, low or medium molecular weight polyisobutylene and vinyl polymer elastomers (e.g., polyvinyl acetate, polyethylene, vinyl acetate, vinyl laurate, vinyl acetate, vinyl stearate, ethylene-vinyl acetate).

[0016] Preferably, the elastomer of the present invention is selected from butyl rubber and polyisobutylene; wherein the ML(1+8)125°C Mooney range of the butyl rubber is 40-60, preferably 45-55; the proportion of molecules with a weight average molecular weight (Mw) of more than 1 million in the butyl rubber is within 20%, preferably within 19%.

[0017] The polyvinyl acetate (PVAc) of the present invention as the resin component of the chewing gum base raw material mainly provides excellent plasticity and chewing resistance for the chewing gum. Specifically, the polymerization degree of the polyvinyl acetate of the present invention is 200-800.

[0018] The plasticizer of the present invention is selected from one or more of triacetin, medium-chain triglycerides, monoglycerides of fatty acids, diesters of fatty acids, triesters of fatty acids, terpene resins derived from α-pinene, terpene resins derived from β-pinene, terpene resins derived from d-limonene, non-hydrogenated, partially hydrogenated and fully hydrogenated cottonseed oil, soybean oil, palm oil, palm oil, coconut oil, safflower oil, tallow oil, cocoa butter, triglycerides of unsaturated oils containing one or more fatty acids with carbon chain lengths of C6 to C18, monoglycerides, diglycerides, acetylated monoglycerides, distilled monoglycerides, distilled diglycerides, monoglycerides containing triglycerides at a level of less than 2 weight percent, and diglycerides containing triglycerides at a level of less than 2 weight percent; wherein the monoglycerides include monoglycerides from the production process.

[0019] The emulsifier of the present invention is the same as that described above and will not be described in detail. Preferably, the emulsifier is selected from triacetin and rosin glycerol ester.

[0020] The wax of the present invention is a wax-type emulsifier, which is selected from one or more of natural wax, synthetic wax, hydrogenated vegetable oil, and petroleum wax. Specifically, the wax is selected from one or more of polyurethane wax, polyethylene wax, paraffin wax, microcrystalline wax, fatty wax, sorbitan monostearate, tallow, and propylene glycol. The wax of the present invention can be incorporated into the gum base to obtain various desired textures and consistency properties.

[0021] The filler reinforcing agent of the present invention is selected from one or more of magnesium carbonate, calcium carbonate, crushed lime, silicates, clay, aluminum oxide, talc, titanium oxide, monocalcium phosphate, dicalcium phosphate, tricalcium phosphate, and cellulose polymers; wherein the cellulose polymers are such as ethyl cellulose, methyl cellulose and lignocellulose or mixtures thereof.

[0022] In some embodiments of the present invention, the chewing gum base raw materials include: 40-80 phr of butyl rubber and polyisobutylene; 80-120 phr of polyvinyl acetate; 80-100 phr of triacetin and rosin glycerol ester; 10-50 phr of wax; and 40-100 phr of filler reinforcing agent.

[0023] In some embodiments of the present invention, the chewing gum base raw materials include: 40-60 phr of butyl rubber and polyisobutylene; 80-120 phr of polyvinyl acetate; 80-100 phr of triacetin and rosin glycerol ester; 25-50 phr of paraffin; and 80-100 phr of calcium carbonate.

[0024] The present invention first freeze-grinds the above-mentioned chewing gum base raw materials to obtain a pre-dispersed sample. The freeze-grinding of the present invention is carried out by a freeze-grinding grinder, which adopts electromagnetic impactor oscillation technology, is efficient and safe, and electromagnetic reciprocating drives the steel impactor to oscillate and impact the sample, with greater kinetic energy inertia, so as to achieve large-area impact of high kinetic energy impactors and rapid crushing and grinding. Compared with the traditional ball mill, the crushing speed is faster and the grinding result is more refined. During the process, the sample is always at liquid nitrogen temperature (-196°C), and the sample becomes brittle due to the low temperature and is ground into powder by back and forth impact. It makes it easier to grind some samples that are difficult to grind at room temperature. The types of samples that can be ground are wide, especially for extremely difficult to grind heat-sensitive, volatile and elastic materials. Many analytical samples that are too soft or sensitive at room temperature are easily broken into various forms in the conventional crushing process, so cooling technology becomes a key means to preserve the integrity of the sample. Once the sample is immersed in liquid nitrogen for cooling, it will quickly become brittle, making it easier to crush, and the crushing time rarely exceeds a few minutes. The present invention adopts a cryo-grinder for cryo-grinding, and the cryo-grinder adopts electromagnetic oscillation impact to grind and crush the sample, and the sample and the metal impact column are loaded into a grinding jar together, and the two ends of the grinding jar are sealed with plugs and then placed in an electromagnetic vibration barrel coil, and the electromagnetic coil and the grinding jar are immersed in liquid nitrogen together for pre-freezing and impact grinding, and the magnetic force generated by the electromagnetic vibration coil drives the impact column to do horizontal reciprocating motion, thereby continuously impacting the sample, so that the frozen brittle sample is quickly ground and crushed to the required fineness, and the original components will not be destroyed, so that at low temperature, the structure and composition information in the component are effectively retained. The present invention can further give play to the characteristics of freezing and grinding itself in retaining material structure and composition information by pre-dispersing the chewing gum base raw materials of specific components through freezing and grinding, and then mixing, so that the chewing gum base obtained after mixing has high dispersibility and chewing performance.

[0025] After obtaining the pre-dispersed sample, the present invention mixes and debonds the pre-dispersed sample to obtain a chewing gum base. Specifically, the pre-dispersed sample is mixed at 140-160° C. for 0.8-1.2 h, and then the heating is stopped and the mixing is continued for 25 min-35 min. After the mixed material is cooled to 120° C., the debond is debonded to obtain a chewing gum base.

[0026] The present invention also provides a chewing gum base obtained by the preparation method described in any of the above technical solutions. The chewing gum base of the present invention can be designed so that the proportion of molecules with a weight average molecular weight (Mw) of more than 1 million is within or outside 20%; preferably, the proportion of molecules with a weight average molecular weight (Mw) of more than 1 million is within 20%, which has better elasticity and chewiness.

[0027] The present invention also provides a chewing gum, which comprises a food additive and a chewing gum base obtained by the preparation method described in any of the above technical solutions. The present invention has no special limitation on the food additive, which can be any conventional chewing gum food additive in the art.

[0028] The present invention provides a chewing gum base, a preparation method thereof and chewing gum. The preparation method provided by the present invention pre-disperses chewing gum base raw materials of specific components through freeze grinding, which can give full play to the characteristics of freeze grinding itself in retaining material structure and composition information, so that the chewing gum base raw materials of the specific components are fully compatible and uniformly mixed, and then the chewing gum base obtained by mixing has high dispersibility and chewing performance. The preparation method provided by the present invention can prepare a chewing gum base with high dispersibility and chewing performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 The figure is a test result diagram of the elastic modulus of the gum base of the embodiment of the present invention and the comparative example;

[0030] Figure 2 The graph is a test result of the chewiness of the gum base of the embodiments of the present invention and the comparative examples. DETAILED DESCRIPTION

[0031] The present invention discloses a chewing gum base, a preparation method thereof and a chewing gum. A person skilled in the art can refer to the content of this article and appropriately improve the process parameters to achieve the same. It should be particularly noted that all similar substitutions and modifications are obvious to a person skilled in the art and are considered to be included in the present invention. The method and application of the present invention have been described through preferred embodiments, and relevant personnel can obviously modify or appropriately change and combine the method and application of this article without departing from the content, spirit and scope of the present invention to implement and apply the technology of the present invention.

[0032] The present invention will be further described below in conjunction with embodiments:

[0033] Example 1

[0034] (1) Sample preparation (material pre-dispersion): Place the elastomer, resin, filler reinforcement, wax and emulsifier in a freezer grinder according to the formula shown in Table 1, grind them into powder and mix them evenly to obtain a pre-dispersed sample, which is then used in the preparation of the gum base.

[0035] Table 1

[0036]

[0037] (2) Mixing process: Mixing is performed using a kneader. Initial temperature: 150°C, add the pre-dispersed sample, mix for 1 hour, turn off the heating, mix for 30 minutes, wait for the rubber base to cool to below 120°C, discharge the rubber, and obtain an elastomer butyl rubber product. The elastomer butyl rubber product index design: weight average molecular weight (Mw) of more than 1 million accounts for more than 20%.

[0038] Example 2

[0039] (1) Sample preparation (material pre-dispersion): According to the formula shown in Table 2, the elastomer, resin, filler reinforcing agent, wax and emulsifier were placed in a freezer grinder, ground into powder and mixed evenly to obtain a pre-dispersed sample, which was then used in the preparation of the gum base.

[0040] Table 2

[0041]

[0042] (2) Mixing process: Mixing is performed using a kneader. Initial temperature: 150°C, add the pre-dispersed sample, mix for 1 hour, turn off the heating, mix for 30 minutes, wait for the rubber base to cool to below 120°C, discharge the rubber, and obtain an elastomer butyl rubber product. The elastomer butyl rubber product index design: the weight average molecular weight (Mw) of more than 1 million accounts for less than 20%.

[0043] Comparative Example 1

[0044] (1) Mixing process: Mixing is performed using a kneader. Initial temperature: 120°C. Add elastomer, resin, 1 / 2 filler reinforcing agent, 1 / 2 wax, 1 / 2 emulsifier, etc. according to the formula shown in Table 3. Mix for 10 minutes, then add the remaining 1 / 2 filler reinforcing agent, 1 / 2 wax, and 1 / 2 emulsifier. Then heat to 150°C and mix for 1 hour. Turn off the heating and mix for 30 minutes. When the rubber base cools to below 120°C, discharge the rubber to obtain an elastomer butyl rubber product. The elastomer butyl rubber product index design: weight average molecular weight (Mw) of more than 1 million accounts for more than 20%.

[0045] Table 3

[0046]

[0047] Comparative Example 2

[0048] (1) Mixing process: Mixing is performed using a kneader. Initial temperature: 120°C. Add elastomer, resin, 1 / 2 filler reinforcing agent, 1 / 2 wax, 1 / 2 emulsifier, etc. according to the formula shown in Table 4, mix for 10 minutes, then add the remaining 1 / 2 filler reinforcing agent, 1 / 2 wax, and 1 / 2 emulsifier, then heat to 150°C, mix for 1 hour, turn off the heating, mix for 30 minutes, wait for the rubber base to cool to below 120°C, discharge the rubber, and obtain an elastomer butyl rubber product. The elastomer butyl rubber product index design: weight average molecular weight (Mw) of more than 1 million accounts for more than 20%.

[0049] Table 4

[0050]

[0051] Comparative Example 3

[0052] (1) Sample preparation (material pre-dispersion): According to the formula shown in Table 5, the elastomer, resin, filler reinforcing agent, wax and emulsifier were placed in a freezer grinder, ground into powder and mixed evenly to obtain a pre-dispersed sample, which was then used in the preparation of the gum base.

[0053] (2) Mixing process: Mixing is performed using a kneader. Initial temperature: 150°C, add the pre-dispersed sample, mix for 1 hour, turn off the heating, mix for 30 minutes, wait for the rubber base to cool to below 120°C, discharge the rubber, and obtain an elastomer butyl rubber product. The elastomer butyl rubber product index design: the weight average molecular weight (Mw) of more than 1 million accounts for less than 20%.

[0054] Table 5

[0055]

[0056] Sample preparation for chewing performance evaluation:

[0057] The gum base was hot-pressed at 120°C for 10 min in a 2 mm thick 10 cm*10 cm mold, and then the mold was placed on a flat plate with cold water to cool it down, which facilitated the cold pressing of the gum base. After the cold-pressed gum base sample was placed at room temperature for 24 hours, the elastic modulus test and chewiness test were performed. The elastic modulus test was evaluated using the RPA frequency scanning mode, and the experimental conditions were: 100°C, 7% strain, 0.1-30Hz; the chewiness test was evaluated using a texture analyzer, and the experimental conditions were: room temperature test.

[0058] Test results such as Figure 1 and Figure 2 As stated, Figure 1The figure is a test result diagram of the elastic modulus of the gum base of the embodiment of the present invention and the comparative example, Figure 2 The graph is a test result of the chewiness of the gum base of the embodiments of the present invention and the comparative examples.

[0059] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A method for preparing a chewing gum base, characterized in that: The following steps are involved: S1) freeze-grinding a chewing gum base raw material to obtain a pre-dispersed sample; S2) mixing and kneading the pre-dispersed sample obtained in step S1) to remove gum to obtain a chewing gum base; The chewing gum base raw materials include: 40-80 phr of an elastomer; the elastomer is selected from one or more of butadiene-styrene copolymer, butyl rubber, polybutadiene, polyisobutylene and vinyl polymer elastomer; 80-120 phr polyvinyl acetate; 0~20 phr of plasticizer; 80-100 phr of an emulsifier; the emulsifier is selected from distilled monoglycerides, acetic acid esters of monoglycerides and diglycerides, citric acid esters of monoglycerides and diglycerides, lactic acid esters of monoglycerides and diglycerides, monoglycerides and diglycerides, polyglycerol esters of fatty acids, cetearyl alcohol polyether-20, polyricinoleic acid polyglyceryl esters, propylene glycol esters of fatty acids, polylaurin, cocoyl glyceryl, gum arabic, acacia gum, sorbitan monostearate, sorbitan tristearate, sorbitan monolaurate, sorbitan monooleate, sodium stearoyl lactylate, calcium stearoyl lactylate, diacetyl tartaric acid esters of monoglycerides and diglycerides, tricaprylic-capric glyceride I medium chain triglyceride, dioleic acid glyceride, oleic acid glyceride, lactic acid glyceride of fatty acids, palmitic acid lactic acid One or more of glyceryl esters, stearic acid glyceryl, lauric acid glyceryl, dilauric acid glyceryl, monoricinoleic acid glyceryl, monostearic acid triglyceride, distearic acid hexaglyceryl, monostearic acid decaglyceryl, dipalmitic acid decaglyceryl, monooleic acid decaglyceryl, polyglyceryl 10 hexaoleate, medium chain triglycerides, caprylic / capric triglyceride, monostearic acid propylene glycol ester, polysorbate 20, polysorbate 40, polysorbate 60, polysorbate 80, polysorbate 65, distearic acid hexylglyceryl, monostearic acid triglyceride, Tween, spans, stearoyl lactylate, calcium stearoyl-2-lactylate, sodium stearoyl-2-lactylate, lecithin, ammonium phosphatide, sucrose esters of fatty acids, sucrose glycerides, propane-1,2-diol esters of fatty acids, triacetin, and rosin glyceride; 10~50 phr wax; and 40~100 phr of filler reinforcement.

2. The preparation method according to claim 1, characterized in that: The plasticizer is selected from the group consisting of triacetin, medium chain triglycerides, monoglycerides of fatty acids, diesters of fatty acids, triesters of fatty acids, terpene resins derived from α-pinene, terpene resins derived from β-pinene, terpene resins derived from d-limonene, cottonseed oil, soybean oil, palm oil, palm oil, coconut oil, safflower oil, tallow oil, cocoa butter, triglycerides of unsaturated oils containing one or more fatty acids with carbon chain lengths of C6 to C18, monoglycerides, diglycerides, acetylated monoglycerides, distilled monoglycerides, distilled diglycerides, monoglycerides containing less than 2 weight percent levels of triglycerides, and diglycerides containing less than 2 weight percent levels of triglycerides; The wax is selected from one or more of natural wax, synthetic wax, hydrogenated vegetable oil, and petroleum wax; The filler reinforcing agent is selected from one or more of magnesium carbonate, calcium carbonate, crushed lime, silicates, clay, aluminum oxide, talc, titanium oxide, monocalcium phosphate, dicalcium phosphate, tricalcium phosphate, and cellulose polymers.

3. The preparation method according to claim 1, characterized in that: The elastomer is selected from butyl rubber and polyisobutylene; or, the elastomer is selected from polyisobutylene and butyl rubber with a Mooney range of 40 to 60.

4. The preparation method according to claim 1, characterized in that: The polymerization degree of the polyvinyl acetate is 200-800.

5. The preparation method according to claim 1, characterized in that: The emulsifier is selected from triacetin and rosin glycerol ester.

6. The preparation method according to claim 1, characterized in that: The chewing gum base raw materials include: 40~80 phr of butyl rubber and polyisobutylene; 80-120 phr polyvinyl acetate; 80-100 phr of triacetin and rosin glycerol ester; 10~50 phr wax; and 40~100 phr of filler reinforcement.

7. The preparation method according to claim 6, characterized in that: The chewing gum base raw materials include: 40-60 phr of butyl rubber and polyisobutylene; 80-120 phr polyvinyl acetate; 80-100 phr of triacetin and rosin glycerol ester; 25-50 phr paraffin; and 80-100 phr of calcium carbonate.

8. The preparation method according to claim 1, characterized in that: Step S2) is specifically as follows: The pre-dispersed sample obtained in step S1) is kneaded at 140-160° C. for 0.8-1.2 h, and then the heating is stopped and the kneading is continued for 25 min-35 min. After the kneaded material is cooled to 120° C., the gum base is discharged to obtain the chewing gum base.

9. The chewing gum base obtained by the preparation method according to any one of claims 1 to 8.

10. A chewing gum, characterized in that: The invention comprises food additives and a chewing gum base obtained by the preparation method according to any one of claims 1 to 8.

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