CN103588896A - Cooling method used for producing high purity polydextrose - Google Patents
Cooling method used for producing high purity polydextrose Download PDFInfo
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Abstract
The invention provides a cooling method used for producing high purity polydextrose, and more specifically relates to a mechanical automatic cooling method used for producing high purity polydextrose. The mechanical automatic cooling method comprises steps of material preparation, thermal polymerization, steel strip cooling, membrane washing filtration separation purification, condensation, and drying. Polymerization degree of the obtained sugar-free polydextrose is high, stability is higher, and yield is high.
Description
Technical field
The present invention relates to a kind of production method and equipment of food food fibre, particularly a kind of method of cooling of producing high purity poly-dextrose.
Background technology
Poly-dextrose (Polydextrose claims again ID) is a kind of of water-soluble dietary fibre, is white or off-white color powdery solid, odorless, soluble in water, be at citric acid, under the existence of sorbyl alcohol, glucose high-temperature low-pressure reactive polymeric is formed to polymer, and its chemical formula is the polycondensate of the random bonding of glucose, but with 1,6-glycosidic link is combined into main D-Glucose polymer, be combined with a small amount of sorbyl alcohol, citric acid etc., molecular-weight average is greater than 3200, and mean polymerisation degree is greater than 20.Product form has A type, N-type, K type and modified polyglucose (Litesse) and refining poly-dextrose (II leqqeUltra) etc., A type is amorphous powder, white is to faint yellow, and 10% pH value of water solution is 2.5～3.5, during application, need regulate its acidity with buffer reagent; N-type is the aqueous solution of A type, colourless to faint yellow, concentration 70%, and pH value is neutralized to 5.0～6.0 with KOH; K type is to use food grade KHCO
3regulate poly-dextrose pH value of water solution to 5.0～6.0, then make solution is concentrated, dry, or with KOH, KHCO
3be dry mixed and form with A type powder; Poly-dextrose is carried out to catalytic hydrogenation processing and obtain white to milky modified polyglucose, the pH value of 10% aqueous solution is 3.0～4.5, acidity and bitter taste reduce, taste has larger improvement, refining the refining poly-dextrose forming is on this basis white solid, taste is salubrious, and the pH value of 10% solution is 4.5～6.5, solution colorless and odorless.
Poly-dextrose has whole intestines, regulates the effect of blood sugar and blood fat, can be used as foodstuff fibre widespread use in various functional foodstuffs.In addition, also there is following features:
Soluble dietary fibre poly-dextrose is a kind of polymer saccharide compound, belongs to food fibre category, has whole intestines, regulates the effect of blood sugar and blood fat, can be used as foodstuff fibre widespread use in various functional foodstuffs.
1. low in calories, without carious tooth
Poly-dextrose is a kind of material low in calories (4.148kJ/g), is about 1/4th of general carbohydrate (16.5kJ/g); Without carious tooth, difficult digested.
2. good water holding and water-retaining capacity
Poly-dextrose has good moisture retention, and its water activity is lower, can prevent or delay the variation of water content in food, contributes to control increase or the loss speed of moisture in food, by keeping moisture or preventing that water migration from extending the shelf-lives of product.
3. suitable viscosity
The viscosity of poly-dextrose solution is higher than the viscosity of same isoconcentration sucrose or Sorbitol Solution USP. when the carbohydrate in replacing food and fat, can form desirable mouthfeel.
4. correct freezing point
While using high-intensity sweetener to manufacture frozen food confection low in calories, can add the matrix that poly-dextrose is adjusted product, the matrix that compensation causes because granulated sugar reduces is lost, and improves because freezing point reduces the bad texture change causing.
5. good processing characteristics
Poly-dextrose stable in properties, good water solubility, compatibility scope is wide, in liquid and solid food, all can apply, and can be used in conjunction with numerous food supplementary materials.
Chinese patent No.90101110.X discloses a kind of by not preparing containing the poly-dextrose of low molecular organic acids the method that particle diameter is less than the powdery poly-dextrose of approximately 125 microns in fact.The method forms powdery poly-dextrose by grinding after the poly-dextrose that does not contain low molecular weight organic acid is mixed with anti-caking agent.China Patent No. No.03126106.X discloses a kind of poly-dextrose production technique and production equipment, adopts described process unit that the polymer content in poly-dextrose product is brought up to more than 90%; Reduced below the content to 4% of reducing sugar; Acidity and pH value are lower, and acidity is that 0.02, pH value reaches 5.Chinese patent application No.101824097 discloses a kind of production method of poly-dextrose, by adopting decolorizing resin adsorption bleaching after negative pressure polyreaction, then adopts dry the making of spraying.
Above-mentioned invention is all to make improvements on the process step of the production of poly-dextrose, artificial link is more, be unfavorable for that quality control and productive rate are lower, in sum, a kind of low cost is provided, the process for preparing poly-glucose that intelligent processing method, high yield and product stability are higher and relevant equipment are all the hot issues of the research of social needs instantly.
Summary of the invention
For solving the problems of the technologies described above, the invention provides a kind of method of cooling of producing high purity poly-dextrose, by mechanical automation technology, improve existing production method in a plurality of links, improved greatly quality control and production and productivity and realized automatic continuous production; By intellectuality, control, can realize remote monitoring and the operation of whole system equipment; According to the requirement of actual production and equipment operation management, " four is distant " control of the remote signalling of feasible system, remote measurement, remote regulating, remote control.
The mouthfeel of poly-dextrose depends on the degree of the polyreaction in its preparation process, reacting mouthfeel more thorough and by product (as alditol) or the prepared poly-dextrose of unreacting material fewer (as sorbyl alcohol) will be better, and simultaneously the polymerization degree of poly-dextrose should be controlled between 16～30 to guarantee the Stability Analysis of Structures of poly-dextrose and not become grume and cannot enter follow-up treating process.For reaching above-mentioned object, contriver, through a large amount of research and experiment, has adjusted the production technique of poly-dextrose, has substantially obtained that preparation mouthfeel is good and low-cost, productive rate is high and product is stablized the production method of high poly-dextrose and relevant equipment.
One of the object of the invention is to provide a kind of method of cooling of producing high purity poly-dextrose, comprises the following steps:
1) batching: get glucose, citric acid, Sorbitol Powder and prepare burden abundant mixing 85～95:0.1～1:5～15 by ratio of weight and the number of copies;
2) hot polymerization reaction: raw material drops into reactor at 170～190 ℃, stirring reaction 4-7 hour, keeping vacuum tightness is 0～-0.12MPa; While closing on reaction end, by vacuum intake, adding concentration is that 1% edible alkali solution adjustment gained poly-dextrose pH value is 5.5-6;
3) steel band is cooling: after raw material is finished by reactor reaction, the poly-dextrose of molten state is evenly distributed on cooling device for steel strip cooling;
4) film filter wash separation and purification: cooled poly-dextrose is soluble in water, make after the poly-dextrose solution of 10-30%, by the separation and purification of filtering membrane filter wash, the relative molecular weight of holding back of film is 400Da-900Da, and liquid and small-molecule substance penetrating fluid are held back in separation;
5) concentrated: gained feed liquid to be concentrated, to concentration 40-70%;
6) dry: feed liquid after concentrated to be carried out to low temperature successive drying, obtain the Sugarless poly-glucose powder-product of white, mouthfeel free from extraneous odour.
Preferably, the molecular-weight average of the Sugarless poly-glucose that aforesaid method makes is 3500～4500Da, poly-dextrose content >=99%, glucose≤0.01%, 5-hydroxymethylfurfural≤0.006%, 1,6-dextrose anhydrous≤0.01%.
Preferably, described cooling device for steel strip is single steel band knot sheet cooler or two steel band knot sheet cooler.
Preferably, after described adjustment pH value step, keep polyreaction to proceed 5～10 minutes.
Preferably, the hot polymerization reaction conditions in described step 2 is: temperature is that 175 ℃, stirring velocity are 650～700 revs/min.
Preferably, described edible alkali be sodium hydroxide, potassium hydroxide or with saleratus mixture.
Preferably, described edible alkali is that the ratio of weight and number of sodium hydroxide or potassium hydroxide and saleratus is 20-30:70-80.
Preferably, described filtering membrane is the organic rolled film of modification ether sulfone.
The method of cooling of production high purity poly-dextrose provided by the invention and the beneficial effect of equipment and system are:
1. reduce the pH value regulating step in existing production technique, it has been synchronizeed with polyreaction, improved production efficiency;
2. the naturally cooling after adopting steel band cooling technology to replace manually connecting material, can realize continuous production, and cooling performance improves 200%, improves output, and is beneficial to quality control and food security supervision.
Embodiment
Below in conjunction with specific embodiment, further illustrate the present invention.Should be understood that following embodiment is only not used in and limits the scope of the invention for the present invention is described.The experimental technique of unreceipted actual conditions in the following example, conventionally according to normal condition, or the condition of advising according to manufacturer.Ratio and per-cent are based on weight, unless stated otherwise.
1. prepare burden
The parts by weight of take prepare material by glucose, sorbyl alcohol, citric acid in proportion as unit, and wherein glucose, citric acid, sorbyl alcohol, evenly mix.Also can adopt other formula rates as required, the even mixing of raw material guarantees the equilibrium of reaction, and wherein main raw material is glucose, and citric acid is catalyzer, and sorbyl alcohol is softening agent.
2. allocate 1% edible alkali solution
In dissolving vessel, inject 1800kgRO pure water.Open whipping appts, the 600kg poly-dextrose raw product of sloughing outer packaging is slowly poured in dissolving vessel.Then add water to dissolving vessel 5 ∕ 6 places, then get the sodium hydroxide of 0.25kg, be made into 10% sodium hydroxide solution, add slowly in dissolution kettle, be stirred well to solution clarification (approximately 40 minutes), then measure its pH value, keep its pH value 5.2 ± 0.1.Place standby.
3. hot polymerization reaction
The raw material mixing carries out polyreaction in reactor.It is 0～-0.12MPa that vacuum tightness is set in reaction, and temperature of reaction is 170～180 ℃, and the reaction times is 4～7 hours.Reactor can adopt high temperature interlayer stainless steel cauldron, or the reactor of other similar purposes.By heat-conducting oil furnace, circulate and keep temperature of reaction.
Before production, first carry out pre-heating temperature elevation, then start reactor, after temperature reaches necessarily, start to feed intake, divide and finish for three times, the rear grade that fed intake is opened vacuum system for 20 minutes.When reaction closes on and finishes, by vacuum, feed intake to the edible alkali solution solution that adds 1% in reactor, after stirring, continuing reaction, within 5～10 minutes, to record pH value be that 5.5～6 rear end are reacted.The product color of gained should be yellow translucent body, pool bright, compared with thickness, more thickness explanation level of response is better.
4. steel band is cooling
By in the completely reacted poly-dextrose crude product access stainless steel belt that cleaning and sterilization has been crossed in advance.Open single steel band flaker or two steel band flaker power supply, then open the following baiting valve of reactor, the poly-dextrose crude product of gained just flows on stainless steel belt, the product of polyreaction gained rapid grumeleuse be sent to flaker tail end on single steel band flaker, is then delivered to the temporary tank of material.
5. pulverize
Before pulverizing, first the alcohol with 75% carries out spray disinfectant to pulverizer stainless steel mesh and food contact surface.Wait for about 10 minutes, treat its seasoning.Install 80 order stainless steel meshs.Open pulverizer power supply, then open the motor under the temporary tank of material, the mass transport in the temporary tank of material is pulverized to pulverizer.
6. decolouring
Poly-dextrose after dissolving is decoloured and processed as ion-exchange or gac through ordinary method, make solution whiteness reach 85-95%.
7. membrane filtration
Dissolving or the liquid poly-dextrose solution after decolouring are circulated through membrane filtration, and further to reduce the impurity of product, the concentrated fluid cylinder of liquid inflow after concentrating, specifically adopts the organic rolled film of modification ether sulfone to filter.
8. evaporation concentration
It is 40～70% that concentrated solution through in the concentrated fluid cylinder of being stored in of membrane filtration is further concentrated into concentration by triple effect thickening equipment, wherein under meter is controlled to 10～15LPM, makes product more be conducive to carry out vacuum-drying.
9. dry
Adopt conventionally spray-dried tower to be dried, after dry end, packing obtains highly purified poly-dextrose product.
Embodiment 1
Proportioning raw materials adopts 85 parts of glucose, 1.5 parts of citric acids, 5 parts of sorbyl alcohols, mixes.
The raw material mixing polymerization in reactor, it is normal pressure that reaction starts in 30 minutes, follow-up slow adjustment vacuum tightness, being controlled at vacuum tightness is 0～-0.12MPa, reacts after 4 hours and stops.Reactor adopts high temperature interlayer stainless steel cauldron, by heat-conducting oil furnace, is circulated and is kept temperature of reaction.
Under material in reactor molten state, regulate rapidly pH value.Use 1% sodium hydroxide to be adjusted to pH5.5.Regulate after pH value, continue to stir 5 minutes.
Reaction finishes that the above-mentioned steel band of rear employing is cooling, pulverizing, membrane filtration, evaporation concentration and vacuum dehydrating at lower temperature.
Obtain refined powder powder Sugarless poly-glucose product, detect each index of products obtained therefrom, concrete detected result is in Table 1.
Table 1
Claims (6)
1. a method of cooling of producing high purity poly-dextrose, comprises the following steps:
1) batching: get glucose, citric acid, Sorbitol Powder and prepare burden abundant mixing 85～95:0.1～1:5～15 by ratio of weight and the number of copies;
2) hot polymerization reaction: raw material drops into reactor at 170～190 ℃, stirring reaction 4-7 hour, keeping vacuum tightness is 0～-0.12MPa; While closing on reaction end, by vacuum intake, adding concentration is that 1% edible alkali solution adjustment gained poly-dextrose pH value is 5.5-6;
3) steel band is cooling: after raw material is finished by reactor reaction, the poly-dextrose of molten state is evenly distributed on cooling device for steel strip cooling;
4) film filter wash separation and purification: cooled poly-dextrose is soluble in water, make after the poly-dextrose solution of 10-30%, by the separation and purification of filtering membrane filter wash, the relative molecular weight of holding back of film is 400Da-900Da, and liquid and small-molecule substance penetrating fluid are held back in separation;
5) concentrated: gained feed liquid to be concentrated, to concentration 40-70%;
6) vacuum dehydrating at lower temperature: feed liquid after concentrated is carried out to low temperature successive drying, obtain the Sugarless poly-glucose powder-product of white, mouthfeel free from extraneous odour.
2. the method for cooling of production high purity poly-dextrose as claimed in claim 1, is characterized in that: described cooling device for steel strip is single steel band knot sheet cooler or two steel band knot sheet cooler.
3. the method for cooling of production high purity poly-dextrose as claimed in claim 1, is characterized in that: the hot polymerization reaction conditions in described step 2 is: temperature is that 170～175 ℃, stirring velocity are 650～700 revs/min.
4. the method for cooling of production high purity poly-dextrose as claimed in claim 1, is characterized in that: described edible alkali is sodium hydroxide, potassium hydroxide or saleratus and composition thereof.
5. the method for cooling of production high purity poly-dextrose as claimed in claim 1, is characterized in that: described edible alkali is that the ratio of weight and number of sodium hydroxide and saleratus is 20～30:70～80.
6. the method for cooling of production high purity poly-dextrose as claimed in claim 1, is characterized in that: described filtering membrane is the organic rolled film of modification ether sulfone.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104829744A (en) * | 2015-04-28 | 2015-08-12 | 山东民强生物科技股份有限公司 | Production method of polydextrose with specific pH value |
| CN105942540A (en) * | 2016-05-27 | 2016-09-21 | 河南泰利杰生物科技有限公司 | Process for preparing dietary fiber powder for baking |
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| US4956458A (en) * | 1988-05-13 | 1990-09-11 | Warner-Lambert Company | Purification of polydextrose by reverse osmosis |
| CN101508740A (en) * | 2009-03-23 | 2009-08-19 | 保龄宝生物股份有限公司 | Process for preparing poly-glucose |
| CN101717453A (en) * | 2009-09-23 | 2010-06-02 | 上海博程生物科技有限公司 | Method for producing polydextrose with improved taste |
| CN102429148A (en) * | 2011-11-11 | 2012-05-02 | 山东龙力生物科技股份有限公司 | Preparation method of high-purity polydextrose with controllable molecular weight |
-
2012
- 2012-08-16 CN CN201210292825.6A patent/CN103588896A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4956458A (en) * | 1988-05-13 | 1990-09-11 | Warner-Lambert Company | Purification of polydextrose by reverse osmosis |
| CN101508740A (en) * | 2009-03-23 | 2009-08-19 | 保龄宝生物股份有限公司 | Process for preparing poly-glucose |
| CN101717453A (en) * | 2009-09-23 | 2010-06-02 | 上海博程生物科技有限公司 | Method for producing polydextrose with improved taste |
| CN102429148A (en) * | 2011-11-11 | 2012-05-02 | 山东龙力生物科技股份有限公司 | Preparation method of high-purity polydextrose with controllable molecular weight |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104829744A (en) * | 2015-04-28 | 2015-08-12 | 山东民强生物科技股份有限公司 | Production method of polydextrose with specific pH value |
| CN105942540A (en) * | 2016-05-27 | 2016-09-21 | 河南泰利杰生物科技有限公司 | Process for preparing dietary fiber powder for baking |
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Owner name: TAILAI FOOD INGREDIENT (NANTONG) CO., LTD. Free format text: FORMER OWNER: SHANGHAI BOCHENG BIOTECHNOLOGY CO., LTD. Effective date: 20150428 Free format text: FORMER OWNER: WINWAY BIOTECHNOLOGY NANTONG CO., LTD. Effective date: 20150428 |
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Effective date of registration: 20150428 Address after: 226400 hi tech Industrial Development Zone, Nantong County, Jiangsu, Rudong Applicant after: Taylor food ingredients (Nantong) Co. Ltd. Address before: 201317 Shanghai hangtou town Pudong New Area Bridge Road No. 2 Building 5 Applicant before: Shanghai Winway Biotechnology Co., Ltd. Applicant before: BOCHENG BIOTECHNOLOGY NANTONG CO., LTD. |
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