Chewing gum and production method thereof

Food or edible material: processes – compositions – and products – Normally noningestible chewable material or process of... – Packaged – structurally defined – or coated

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Details

426 4, A23G 330

Patent

active

047373660

DESCRIPTION:

BRIEF SUMMARY
The invention relates to a chewing gum consisting of a granulated chewing gum base and fillers, additives and active substances; it furthermore relates to a process for the production of this chewing gum, in which the chewing gum base is cooled below 0.degree. C. and comminuted.
The chewing gum mentioned at the outset has often been proposed (DE-A No. 2808160, U.S. Pat. No. 2,290,120 and LU-A No. 74,297). All these known proposals have not been adopted in practice since combination of the individual chewing gum granules to form a cohesive mass during chewing is very poor. On the contrary, mixing the granules with sugar and other solids actually causes separation of the granules, which can be combined in the mouth by intensive compression with the tongue, only after sugar and other solids have been dissolved away.
However, a desirable chewing gum is one which immediately gives a cohesive mass, from which the sugar, flavorings and/or active substances, etc. are then slowly dissolved away, which is particularly important for bitter substances, such as, for example, certain pharmaceutical active substances. Such a chewing gum is obtained, according to the invention, by the measures of claims 1 to 3. By embedding the chewing gum granules in a matrix of fats and/or waxes, a cohesive mass is formed immediately or at least very rapidly during chewing, particularly when the matrix has diffused into the chewing gum granules and has already "plasticized" their surface.
The chewing gum-containing tablets according to the invention are also easier to handle and produce and have a longer shelf life when they are coated with a tablet coating which is known per se.
It is the further object of the invention to provide a process for the production of chewing gum, in particular pharmaceutical chewing gum, which permits the production of small product batches too and in which the active substances to be added to the chewing gum can be exactly metered. The production of pharmaceutical chewing gums on conventional chewing gum machines is in fact difficult for two reasons: first, the production volume is too large and, secondly, it is difficult to meter the active substance or to achieve uniform production of the chewing gum in the pharmaceutical sense. Moreover, the GMP (Good Manufacturing Practice) requirements are difficult to meet.
Surprisingly, however, the chewing gum according to the invention can be produced successfully by means of the measures stated in claims 4 to 7. In the process,
(a) a chewing gum base is cooled to a temperature below -20.degree. C. and comminuted to a particle size of 0.2 to 1 mm,
(b) a material consisting of fats or waxes and having a melting point of 35.degree. to 50.degree. C. is melted, a filler is suspended in the resulting melt, and the melt is allowed to cool and is milled at a temperature below 0.degree. C. to a particle size of 0.2 to 0.5 mm,
(c) the granular chewing gum base obtained under (a) is combined with the granular material obtained under
(b) in a vacuum mixing vessel by mixing at temperatures of no higher than +5.degree. C., and an active substance, coated with a matrix or with the stated fat or wax material, and conventional additives are added,
(d) the mixture thus obtained, which is kept at a temperature of no higher than +5.degree. C., is pressed in a tableting press, preferably a cooled tableting press, to give standard pharmaceutical tablets, and the latter are stored at 10.degree. to no higher than 20.degree. C., and
(e) the tablet-shaped chewing gum cores are coated with a top layer, then heated slowly to 35.degree.-60.degree. C., preferably 40.degree.-45.degree. C., and finally allowed to cool to room temperature.
This procedure is preferred, although it is also possible for the tablets obtained by pressing the various granules to be subjected to the heat treatment in metal sheets provided with appropriate recesses and a release coating.
In the process according to the invention, the chewing gum components are present as normal granules, which however have to be process

REFERENCES:
patent: 2290120 (1942-07-01), Thomas
patent: 4000321 (1976-12-01), Mochizuki et al.
patent: 4139589 (1979-02-01), Beringer et al.
patent: 4370350 (1983-01-01), Fisher et al.
patent: 4405647 (1983-09-01), Fisher et al.
patent: 4491596 (1985-01-01), Elias

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