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You are here: Home / Beers / Patent No. 3679431A: Wort Production

Patent No. 3679431A: Wort Production

July 25, 2016 By Jay Brooks

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Today in 1972, US Patent 3679431 A was issued, an invention of David Henry Clayton and John Karkalas, for their “Wort Production.” There’s no Abstract, although in the description it includes these claims:

This invention is concerned with improvements in or relating to wort production.

– Wort contains in addition to fermentable carbohydrates, soluble nitrogeneous compounds. Barley malt is the traditional raw material for the production of wort since it provides a source of carbohydrates and “nitrogen com pounds and in addition provides the enzymes capable of degrading the carbohydrates and nitrogen compounds to the soluble components of wort.

Malt is manufactured from e.g. barley by the process of malting. This consists of first germinating and then drying barley grain under controlled conditions.

The manufacture of malt is expensive because (1) large capital investments are necessary for the malting machinery, (2) a skilled labour force is required to operate the malting machines, (3) malt can only be made successfully from the higher qualities of barley which are expensive and (4) during the malting process a physical loss in dry matter occurs; this is known as the malting loss.

It is an object of the invention to provide an improved method of producing a wort in which the use of barley malt is reduced or virtually eliminated.

We have found that wort may be produced by treating an aqueous slurry of starch and protein-containing plant material for example unmalted cereal grain e.g. It appears that said hydrodynamic conditions result in the formation of a homogeneous mass very suitable for the action of the starch liquefying enzyme. Examples of starch and protein-containing plant materials other than cereals include roots, fungi material and by-products of processes to which ‘cereals have been subjected.

Examples of suitable materials include tapioca and rice, as well as wheat, barley and maize.

The invention provides a method of producing wort from an aqueous slurry of starch and protein-containing plant material comprising the steps of liquefying starch by treating the slurry with a commercial starch liquefying enzyme subjecting the slurry to hydrodynamic conditions such that a substantial thixotropic reduction of viscosity is produced by shearing forces in the slurry to facilitate the action of the starch liquefying enzyme prior to any substantial reduction of viscosity resulting from the enzymatic liquefaction converting starch to sugar by treatment with a saccharifying enzyme and converting protein to soluble nitrogen-containing compounds by treatment with a proteolytic enzyme.

The invention also provides wort when produced by a method as set out in the last preceding paragraph.

The invention also provides a process for brewing beer including such a method.

The invention also provides beer when produced by such a process.

The invention also provides a process of producing a concentrated wort syrup by concentrating wort produced by such a method.

The invention also provides a concentrated wort syrup when produced by such a process.

US3679431-0

Filed Under: Beers, Breweries, Just For Fun, Politics & Law, Related Pleasures Tagged With: adjuncts, barley, History, Law, Malt, Patent, Science of Brewing, Wort



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