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Gum baseRelated Patent Categories: Food Or Edible Material: Processes, Compositions, And Products, Normally Noningestible Chewable Material Or Process Of PreparationGum base description/claimsThe Patent Description & Claims data below is from USPTO Patent Application 20060083818, Gum base. Brief Patent Description - Full Patent Description - Patent Application Claims
PRIORITY CLAIM [0001] The present application is a continuation of U.S. patent application Ser. No. 10/182,225, filed Oct. 1, 2002, which is the U.S. National Phase of PCT International Application No. PCT/NZ00/00003, filed Jan. 27, 2000. Each of these prority applications is incorporated by reference herein. FIELD OF THE INVENTION [0002] This invention relates to new chewable gum base compositions, to products made from such compositions, in particular to chewing gums, and to processes for preparing same. BACKGROUND OF THE INVENTION [0003] Chewing gum is a popular consumer product, because of its taste and the chewing sensation that it provides. However, conventional chewing gums, when spent, have a strong tendency to stick to surfaces such as carpets and sidewalks, and retain their stickiness for a considerable period of time. They are also non-biodegradable. Accordingly, conventional chewing gums, if disposed of improperly, can cause an unsightly litter problem that is difficult to remove. This has led to restrictions on the sale of conventional chewing gums in some countries. [0004] It would therefore be desirable to provide a chewing gum which goes some way towards overcoming these problems, while at the same time maintaining good chewing properties and therefore acceptability to consumers. [0005] WO 98/15189 of Warner Lambert Company discloses a process in which a blend of a protein component and a plasticizer component is heated under controlled shear conditions to form a plasticized proteinaceous material, which may be used for producing gums and confectionery compositions. SUMMARY OF THE INVENTION [0006] It is an object of the present invention to provide a gum base composition which goes some way towards meeting the above desiderata, or at least to provide the public with a useful choice. [0007] Accordingly, in one aspect, the present invention provides a chewable gum base composition comprising (a) a polyvinyl acetate matrix, wherein the polyvinyl acetate is in the form of a continous phase, and (b) casein, modified casein, or both casein and a modified casein, wherein particles of casein and/ or modified casein are dispersed throughout the polyvinyl acetate matrix. [0008] In a preferred embodiment, the gum base composition contains acid casein. In a paticularly preferred embodiment, the gum base contains both acid casein and fine ground acid casein. [0009] In another preferred embodiment, the gum base contains both acid casein and acid casein which has been polymerised using transglutaminase, or hydrolysed acid casein which has been polymerised using transglutaminase. [0010] It is particularly preferred that the polyvinyl acetate comprises a blend of polyvinyl acetates having differing molecular weights. [0011] In addition, the gum base composition preferably includes one or more non-toxic plasticizers and/or emulsifiers. Preferably, the gum base includes mono- and triglycerides esterified with mono-acetyl and diacetyl tartaric acid (Datem), acetylated mono- and/or diglycerides and polyglycerol polyricinoleate. [0012] In a particularly preferred embodiment, the gum base composition further includes the additional emulsifiers lecithin and sodium stearoyl-2-lactylate or calcium stearoyl-2-lactylate. [0013] It is also preferred that the gum base composition includes a texturiser, conveniently calcium chloride, which is conveniently combined with the casein or modified casein prior to formulation of the gum base. [0014] The gum base composition preferably also includes a filler such as talc. [0015] In another aspect, the invention provides a confectionery product containing a chewable gum base composition as defined above. [0016] In a further aspect, the present invention provides a chewing gum containing a chewable gum base composition as defined above. [0017] In a preferred embodiment, the chewing gum further comprises glycerol triacetrate and stearic acid, in combination with one or more sweeteners and/or flavouring agents. [0018] In a further aspect the present invention provides a process for preparing a chewable gum base composition comprising particles of casein and/or modified casein dispersed throughout a polyvinyl acetate matrix, the process comprising the steps of heating polyvinyl acetate, together with one or more plasticizers and/ or emulsifiers that are suitable to plasticize the polyvinyl acetate, to a temperature sufficient to melt the polyvinyl acetate, and mixing casein, a modified casein, or both casein and a modified casein with the molten polyvinyl acetate composition, to form a homogenous composition. [0019] Preferably, the polyvinyl acetate is initially heated to a temperature of between about 55.degree. C. and about 110.degree. C. with the one or more plasticizers and/or emulsifiers. [0020] Preferably the casein and/or modified casein are added after the polyvinyl acetate is molten, and the casein and/or modified casein are mixed in to the composition while the composition is at a temperature of from about 40.degree. C. to about 90.degree. C. Continue reading about Gum base... Full patent description for Gum base Brief Patent Description - Full Patent Description - Patent Application Claims Click on the above for other options relating to this Gum base patent application. ###  How KEYWORD MONITOR works... a FREE service from FreshPatents1. Sign up (takes 30 seconds). 2. Fill in the keywords to be monitored. 3. Each week you receive an email with patent applications related to your keywords. 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