CN1044964C - Process for fine konjak powder - Google Patents
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- CN1044964C CN1044964C CN94116535A CN94116535A CN1044964C CN 1044964 C CN1044964 C CN 1044964C CN 94116535 A CN94116535 A CN 94116535A CN 94116535 A CN94116535 A CN 94116535A CN 1044964 C CN1044964 C CN 1044964C
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Abstract
The present invention relates to a processing method for refined konjak powder. The present invention comprises: fresh konjak blocks are added into solution media of which the ratio of the konjak to the solution is 1: 1 to 2, and the solution media contain 0 to 0.3 mol/l sodium hydroxide and 0.02 to 0.1 mol/l sodium tetraborate; the mixture is put into a micro grinder, and is pulverized, ground and centrifugalized; the filtration residues are washed for 1 to 3 times by adding water into the filtration residues; below 80 DEG C, the materials are dried until the water content of the materials is from 20% to 40%; 0.3 to 0.5 l of 0.1 to 0.3 mol/l hydrochlric solution is added into per kg of powder, the mixture is fully and uniformly stirred, and the mixture is dried to a product of which the water content is below 13% and the pH is from 5.5 to 6.8 below 80 DEG C. The product of The present invention has the advantages of high glucomannan content, large viscosity, good water solubility and low processing cost, and is convenient for industrial scale production.
Description
The invention belongs to the processing technology of Rhizoma amorphophalli powder, the konjaku powder that this law is produced is applicable to the non-food product industry, as industries such as oil drilling, textile printing and dyeing, chemical industry.
Konjaku (Amorphophallus spp) is celebrated to be rich in konjac glucomanna (Glucomannan).Rhizoma amorphophalli glucomannan is to pass through β-1 by D-glucose and D-mannose residue; the water-soluble plant polysaccharide that has the acetylize group on the combination of 4 glycosidic links, some glucosyl residue; molecular weight is more than 300,000 dalton; have gelling, thickening, suspend, make film, bonding, multifrequency nature such as plastic, lubricated; its viscosity in aqueous solution is more much higher than general hydrophilic colloid thing (as pectin, xanthan gum, carrageenin, carboxymethyl cellulose etc.), and good stability.Therefore, Rhizoma amorphophalli glucomannan can be used for multiple industry, as can make thickening material, preservation agent in food service industry; In pharmaceutical industry, can make caking agent, embedding medium, capsule etc.; In the oil drilling industry, make mud stablizer, lubricant, solid phase free flushing liquid etc.; In textile printing and dyeing industry, do sizing agent, the printing and dyeing agent of senior cloth.
Konjaku powder is the raw product of Rhizoma amorphophalli glucomannan.For a long time, the working method of konjaku powder is subject to people's attention always, has successively released several different methods.Overview gets up to have two classes.One class is a dry method, promptly earlier the konjaku stem tuber is cut into piece or sheet, and oven dry is then pulverized dried piece or dry plate and ground, and utilizes particle diameter difference between konjac glucomanna particle and the starch particle to sieve with difference in specific gravity or selection by winnowing is separated, with the acquisition konjac glucomanna.This class methods tooling cost is lower, but outstanding defective is arranged, and as product foreign matter content height, viscosity is low, also needs during use to handle etc. again.Another kind of method is a wet method, common wet method is to utilize to prevent that konjac glucomanna swollen ethanol, Virahol, methyl alcohol, acetone and other organic solvent from making machining medium, fresh Amorphophallus rivieri is pulverized grinding in the presence of its medium, carry out centrifugation again, drying, the product foreign matter content that this method obtains is few, the viscosity height, but because of the organic solvent consumption is big, tooling cost is very high.People (USP3 such as Noboru Sugiyama, 856,945) adopt the fresh Amorphophallus rivieri stem tuber in the presence of 10-100 times of water, to grind, centrifugal, remove insolubles, this solution carries out the flowing water dialysis again, removes inorganic salt, again in-20 ℃ of following lyophilizes, obtain Rhizoma amorphophalli glucomannan, this product purity height, but equipment complexity, cost are high, are unsuitable for industrial-scale production.
The object of the present invention is to provide a kind of processing ease, tooling cost is low, product impurity is few, konjac glucomanna content height, good water solubility, viscosity height are suitable for the working method of industrial-scale production, its product is applicable to the non-food product industry.
The working method of a kind of konjaku powder of the present invention comprises the following steps:
(1) fresh Amorphophallus rivieri that will clean peeling is earlier put into the 0.4-2.0umol/l S-WAT or sodium sulfite solution soaks 1-3 second;
(2) then stem tuber is cut into the following fritter of 10 grams, adds the solution that contains 0-0.3mol/l sodium hydroxide, 0.02-0.1mol/l sodium tetraborate, in micro grinder, pulverize and grind by taro liquid weight ratio 1: 1-2;
(3) the screenings thing after the grinding imports and carries out the screenings separation in the whizzer that is lined with the above filter bag of 200 orders;
(4) filter residue adds water more than 5 times again, stirs evenly, and grinds washing in micro grinder, and filter residue is collected in centrifuge dehydration, and so washing dehydration is 1-3 time;
(5) with enterprising material be dried to below 80 ℃ water content 20-40% half in product;
(6) press at last the 0.1-0.3mol/l hydrochloric acid soln that the per kilogram powder adds the 0.3-0.5 liter in half-dried product, fully mix thoroughly, still water content is lower than 13%, the product of pH5.5-6.8 being dried to below 80 ℃.
Its method is described in detail as follows:
1, cleans peeling: the silt particle on fresh Amorphophallus rivieri stem tuber surface is cleaned, removed the brown epidermis with methods such as scraping, friction, chemical treatments then.
2, protect look: the konjaku stem tuber contains polyphenols, very easy generation brown stain.For preventing brown stain, the stem tuber after the peeling immerses 1-3 second in 0.4-2.0umol/l sodium bisulfite or the sodium sulfite solution.
3, grind separation: test finds that under alkaline condition, Rhizoma amorphophalli glucomannan and sodium tetraborate reaction generate insoluble konjac glucomanna-boron complex.This complex compound good reversibility promptly under neutrality or acidic conditions, can be separated complexing, and konjac glucomanna is restored.Therefore utilize this principle extraction separation Rhizoma amorphophalli glucomannan.Concrete operations are as follows: above-mentioned konjaku stem tuber is cut into small pieces, every heavy 1-10 gram, contain in the 0.02-0.1mol/l sodium tetraborate solution of 0-0.3mol/l sodium hydroxide by taro liquor ratio 1: 1-2 (weight) adding, in micro grinder, pulverize, grind, utilize filtering centrifuge to slough solution and part small-particle impurity then.
4, washing: above-mentioned filter residue mainly is konjac glucomanna-boron complex, and still contains some impurity, need take off boron and removal of impurities.For boron and impurity-eliminating effect are taken off in raising, adopt and grind washing method, promptly press the water of filter residue weight adding more than 5 times in grinding machine for grinding, in whizzer, dewater again, repeat again to grind washing 1-2 time, to water lotion pH7.2-8.5, Rhizoma amorphophalli glucomannan still is till the loose condition (of surface), centrifuge dehydration.
5, neutralization: said extracted thing (filter residue) though through washing, but still contain a spot of sodium tetraborate and (or) sodium hydroxide, promptly also have part konjac glucomanna-boron complex not separate complexing, need with neutralize wherein alkali of a spot of acid.Otherwise, influence the solvability and the viscosity of Rhizoma amorphophalli glucomannan.Neutralization method is as follows: earlier the filter residue behind the above-mentioned washing dehydration is not more than 80 ℃ of following preliminarily drieds at temperature of charge, till reaching 20-40% to its water content, press the per kilogram Rhizoma amorphophalli powder again and add the hydrochloric acid soln that 0.3-0.5 rises 0.1-0.3mol/l, make finished product pH together at 5.5-6.8
6, drying: be not more than 80 ℃ of dryings down at temperature of charge, to water content≤13%.
Advantage of the present invention and positively effect are as follows:
1, working method operation of the present invention is easier to, and tooling cost is lower.Present method does not need the complicated operations process, and does not need with an organic solvent, and its cost of supplementary product only is about 1/4 of organic wet method.
2, the product foreign matter content is few, the purity height.Because through repeatedly grinding, the impurity of konjac glucomanna particle surface (starch etc.) is removed thoroughly, and, make the inner impurity of konjac glucomanna particle also be removed a part because of contacting repeatedly with alkaline aqueous solution.After measured, the konjac glucomanna content of this law institute converted products is higher more than 10% than the konjaku powder of dry production.
3, product granularity is thin, and dissolution rate is fast.The konjaku powder granularity of common dry production is mainly between the 40-80 order, and the granularity of the konjaku powder that this law is produced is mainly between the 80-150 order.Because fine size, surface-area increases greatly, thereby has improved the dissolution rate of smart powder, than the fast 1-2 of the smart powder of dry method doubly.
4, product colour is white.Because of in the course of processing, having taked to protect the look measure, controlled the generation of brown stain.
Narrate embodiments of the invention below:
Embodiment 1:
Take by weighing 100 kilograms of fresh Amorphophallus rivieri stem tubers, flush away surface earth, scrape off epidermis with skinner, dig up terminal bud with cutter, immerse 2-3 second in the 0.4umol/l sodium sulfite solution, the fritter of 2 * 2cm is cut in taking-up, add the 0.03mol/l sodium tetraborate solution that contains 0.08mol/l sodium hydroxide at 1: 1 by the taro liquor ratio, import in the micro grinder, regulate mill spacing 10-15um, pulverize and grind, its screenings thing is poured in the whizzer that is lined with 250 order filter bags, and the centrifugal solution of sloughing is poured filter residue in 500 kg of water again, send into after stirring evenly to do in the grinding machine and grind once the same centrifuge dehydration again.Again filter residue is poured in 500 kg of water, sent into after stirring evenly in the micro grinder and grind once again, the same centrifuge dehydration.Filter residue is dried by the fire in pneumatic drier 2 times, 10 meters of 130 ℃ of its gas flow temperatures (temperature of charge＜80 ℃), wind speed per seconds add 4 liters of 0.2mol/l hydrochloric acid solns again in its Rhizoma amorphophalli powder, fully mix thoroughly again, under above-mentioned condition, dry, 7.9 kilograms of konjaku powders.Its quality product sees attached list 1.
Embodiment 2:
Take by weighing 100 kilograms of fresh Amorphophallus rivieri stem tubers, clean sheller with roller and clean peeling, dig up terminal bud with cutter, immerse 1-2 second in the 2.0umol/l sodium sulfite solution, take out the fritter that in crusher, is broken into below 10 grams, broken fritter falls into 150 liters of 0.09mol/l sodium tetraborate solution, send in the micro grinder, regulating the mill spacing is 10-15um, pulverizes and grinds, and its screenings thing is poured in the whizzer that is lined with 200 order filter bags, the centrifugal solution of sloughing, again filter residue is poured in 600 kg of water, sent into after stirring evenly in the micro grinder and grind once again, the same centrifuge dehydration.Again filter residue is poured in 500 kg of water, sent into after stirring evenly in the micro grinder and grind once again, the same centrifuge dehydration.Again with filter residue in drying by the fire under 80 ℃ when water content is 20-30%, in Rhizoma amorphophalli powder, add 3 liters of 0.3mol/l hydrochloric acid solns again, fully mix thoroughly, under above-mentioned condition, dry again, 8 kilograms of Rhizoma amorphophalli powders.Its quality product sees attached list 1.
Subordinate list 1. quality product detected results
Annotate: 1. viscosimetric analysis condition: NDJ-1 type rotational viscosimeter, No. 4 rotors, 12
| Test item | Embodiment 1 | Embodiment 2 | The smart powder of dry method |
| Viscosity (Pa.S) 1. | 19.2 | 18.7 | 11.9 |
| Granularity (≤0.18mm) | 81.5％ | 80.8％ | 6.4％ |
| Color | White | White | Slightly yellow |
| Moisture content (%) | 11.5 | 11.7 | 11.2 |
| Konjac glucomanna content (% butt) | 86.0 | 87.6 | 75.1 |
| Boron content (mg/Kg) | 213 | 234 | 9.1 |
| Solvability 2. | The sub-homogeneous phase of smart powder suspends dissolving in 2 hours fully in the time of 15 minutes | The sub-homogeneous phase of smart powder suspends dissolving in 2 hours fully in the time of 15 minutes | The sub-homogeneous phase of smart powder suspends dissolving in 4 hours fully in the time of 40 minutes |
| pH③ | 6.1 | 5.9 | 6.1 |
Rev/min, concentration 1%, 25 ℃ of temperature.
2. concentration 1%, and 25 ℃ of temperature are constantly stirred before the sub-homogeneous phase of smart powder suspends
Mix, after homogeneous phase suspends, stirred once in about 20 minutes.
3. concentration 1%.
Claims (1)
1. the working method of a konjaku powder is characterized in that:
(1) fresh Amorphophallus rivieri that will clean peeling is earlier put into the 0.4-2.0umol/l S-WAT or sodium sulfite solution soaks 1-3 second;
(2) then stem tuber is cut into the following fritter of 10 grams, adds the solution that contains 0-0.3mol/l sodium hydroxide, 0.02-0.1mol/l sodium tetraborate, in micro grinder, pulverize and grind by taro liquid weight ratio 1: 1-2;
(3) the screenings thing after the grinding imports and carries out the screenings separation in the whizzer that is lined with the above filter bag of 200 orders;
(4) filter residue adds water more than 5 times again, stirs evenly, and grinds washing in micro grinder, and filter residue is collected in centrifuge dehydration, and so washing dehydration is 1～3 time;
(5) with above-mentioned material at the half-dried product that is dried to water content 20-40% (weight) below 80 ℃;
(6) in half-dried product, press the per kilogram powder at last and add the 0.1-0.3mol/l hydrochloric acid soln that 0.3-0.5 rises, fully mix thoroughly, still be dried to the product that water content is lower than 13% (weight), pH5.5-6.8 below 80 ℃
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN94116535A CN1044964C (en) | 1994-10-06 | 1994-10-06 | Process for fine konjak powder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN94116535A CN1044964C (en) | 1994-10-06 | 1994-10-06 | Process for fine konjak powder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1129706A CN1129706A (en) | 1996-08-28 |
| CN1044964C true CN1044964C (en) | 1999-09-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN94116535A Expired - Fee Related CN1044964C (en) | 1994-10-06 | 1994-10-06 | Process for fine konjak powder |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1081009C (en) * | 1996-12-18 | 2002-03-20 | 杨康康 | Process for making konjaku water solutable edible fiber |
| CN1105752C (en) * | 1999-12-24 | 2003-04-16 | 武汉大学 | Composite konjak glue and its preparing method and use |
| JP4180258B2 (en) * | 2001-08-06 | 2008-11-12 | 西川ゴム工業株式会社 | IgE antibody inhibitor and food |
| CN101781388B (en) * | 2009-01-21 | 2011-10-26 | 西南科技大学 | Glucomannan thermoplastic material and preparation method thereof |
| CN101836718B (en) * | 2009-09-04 | 2011-07-13 | 汉阴县川陕魔芋厂 | Wet processing method for konjak refined powder and konjak powder dehydration device |
| CN102524707A (en) * | 2012-01-06 | 2012-07-04 | 陕西天元隆农业科技有限公司 | Konjac processing process |
| CN103461902B (en) * | 2013-07-29 | 2014-07-16 | 西昌学院 | Low-alcohol concentration wet processing method for refined konjak powder |
| CN103340371B (en) * | 2013-07-29 | 2014-10-15 | 西昌学院 | Method for processing konjak fine powder by using non-alcoholic wet method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59175862A (en) * | 1983-03-28 | 1984-10-04 | Sono Harumitsu | Preparation of konjak seasoned with miso |
| CN1033565A (en) * | 1987-12-22 | 1989-07-05 | 中国科学院成都生物研究所 | A kind of processing technique of refined powder of marvellous taro |
| CN1040799A (en) * | 1988-09-03 | 1990-03-28 | 核工业部九院十所 | The process for purification of glucomannan in the konjaku |
| CN1067261A (en) * | 1991-04-30 | 1992-12-23 | 株式会社日立制作所 | The lubricant that is used for refrigerating compressor |
| JPH05194603A (en) * | 1992-01-23 | 1993-08-03 | Asahi Chem Ind Co Ltd | Transparent konjakmannan gel |
-
1994
- 1994-10-06 CN CN94116535A patent/CN1044964C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59175862A (en) * | 1983-03-28 | 1984-10-04 | Sono Harumitsu | Preparation of konjak seasoned with miso |
| CN1033565A (en) * | 1987-12-22 | 1989-07-05 | 中国科学院成都生物研究所 | A kind of processing technique of refined powder of marvellous taro |
| CN1040799A (en) * | 1988-09-03 | 1990-03-28 | 核工业部九院十所 | The process for purification of glucomannan in the konjaku |
| CN1067261A (en) * | 1991-04-30 | 1992-12-23 | 株式会社日立制作所 | The lubricant that is used for refrigerating compressor |
| JPH05194603A (en) * | 1992-01-23 | 1993-08-03 | Asahi Chem Ind Co Ltd | Transparent konjakmannan gel |
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| Publication number | Publication date |
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| CN1129706A (en) | 1996-08-28 |
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