Classifications

• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
  • C08B30/00—Preparation of starch, degraded or non-chemically modified starch, amylose, or amylopectin
  • C08B30/04—Extraction or purification
  • C08B30/042—Extraction or purification from cereals or grains
  • C08B30/044—Extraction or purification from cereals or grains from corn or maize

Definitions

• All substances containing starch are composed of vegetable matters besidesthe starch itself, and in the manufacture of starch it is desirable to separate it from the other Vegetable' matters with as little waste of or injury to the starch as possible, and in such manufacture as at present generally practiced (although other processes have been used) it is usual to steep the substance from which starch is to be obtained for some weeks in water for the purpose of separating by fermentation the starch from the other matters, and by such process not only is the starch or a portion of it injured, but a considerable portion of it is retained in the other products, and such other products, with the starch associated therewith, (usually more than one-half of the whole weight of the substauceemployed,)are ofcomparativelylittle value,owin g to the fermentation through which they have passed.
• my invention not only may a larger product of starch of the best character he obtained from a given quantity of wheat or other substance containing starch, but the time expended in the production of it is materially shortened; and, further, some of the other products of the substance employed can be obtained fit for use from their not having gone through the process of fermentation, and thus they will be found suitable, with an admixture of wheaten or other flour, for the making of bread, biscuit, and other preparations of food; and, partic ularly, 1 am enabled to apply myinvention to rice, which has not hitherto been rendered practically available as a source of starch, so
• my invention relates to a mode of heating or operating on farinaccous matters to obtain starch and other products, and for manufacturing starch by means of submitting such farinaceous matters to a causticalkaline process, as hereinafter more particularly explained.
• my invention can be applied with advantage in themanufacture of starch from potatoes.
• tinned or copper-lined, or suchvessels may be of stoneware, wherein to macerate the rice in a caustic alkaline solution previous'to grinding, as hereinafter explained, and also for washing the rice after the process of maceration.
• No. 2 one or more vessels of iron, tinned or copper-lined, or of stoneware, wherein to maeerate the rice-flour in a caustic alkaline solution, as hereinafter explained.
• No. 3 one or more vessels of wood, wherein the deposit of the starch is efiected.
• one or more vessels of wood one or more vessels of wood,
• This liquor is to be allowed to restabout an hour, when the matters other than starch (which deposit much quicker than the starch) will subside, carrying therewith a small portion of the starch but will leave by far the greater bulk of the starch suspended in the liquor.
• Theliquor thus containing the starch i then draw off by means of a tin siphon, passing it through sieves (such as are commonly used by starch-makers and called by sieve-makers fine-silk sieves," in order to remove any small portion of outer skin or bran) into a vessel, (No.
• the starch-liquor in No.3 is then to be allowed about seventy hours to settle or deposit, and after the deposit has taken place, which may be ascer tained by the means before described, the waste liquor is to be drawn off and the starch stirred up, blued, (it thought necessary,) drained, dried, and finished in the usual way.
• I proceed as follows: I maceratethe rice, as before described in the process for making starch of the first or best quality, and draw off the caustic alkaline solution after the lapse of about twelve hours. The same quantity and strength of fresh caustic alkaline solution is then added to the rice and allowed to remain for the same time, and is drawn off as before. This operation is repeated three or four times until as much of the gluten or coloring-matter is removed as may be desired. The rice is then to be washed, drained, dried, and ground into flour, and the flour is to be passed through sieves, as before,
• This inferior starch may be used not only for the purpose of stifiening fabrics, but. also for that of distillation, making paste, and, in short, for all purposesto which alow-quality starch may be applied. It may also be used as food; but
• the gluten with traces of other matters, is held in combination with or in-solution in the caustic alkaline liquor which is above the deposits, and becomes of a brownishyellow color.
• the starch When the starch is deposited, which may be ascertained by the means before mentioned, I draw olf the brownish-yellow liquor which is on the top into a vessel (No. 4)
• the deposit is then mixed with a quantity of clean water equal to what was drawn ofi, allowed to settle or deposit, and drawn ed, as before.
• the deposit is then to be drained and dried in stoves, then ground or crushed bya mill or by rollers or any other mechanical means used forsuch purposes, and the flour thus produced may be mixed with Wheaten or other flour for bread or biscuit or other articles of food and I have found that a very beneficial proportion in which this llourmay be mixed with Wheaten or other flour is one part of the former to three parts of the latter, though other matter than starch which is separated in the manufacture of the better quality of starch may be mixed with the gluten, and the'whole'drained, dried, ground, and appropriated with the gluten, as above described.
• What I claim as my invention is- 1.

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• Chemical & Material Sciences (AREA)
• Life Sciences & Earth Sciences (AREA)
• Engineering & Computer Science (AREA)
• Biochemistry (AREA)
• Materials Engineering (AREA)
• Health & Medical Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Medicinal Chemistry (AREA)
• Polymers & Plastics (AREA)
• Organic Chemistry (AREA)
• Cereal-Derived Products (AREA)
• Polysaccharides And Polysaccharide Derivatives (AREA)

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Cited By (74)

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  • US US2000D patent/US2000A/en not_active Expired - Lifetime

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