CN101085807A - Method for preparing high viscosity hydrochloric acid casein - Google Patents
Method for preparing high viscosity hydrochloric acid casein Download PDFInfo
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- CN101085807A CN101085807A CN 200610104523 CN200610104523A CN101085807A CN 101085807 A CN101085807 A CN 101085807A CN 200610104523 CN200610104523 CN 200610104523 CN 200610104523 A CN200610104523 A CN 200610104523A CN 101085807 A CN101085807 A CN 101085807A
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Abstract
The invention relates to a method for preparing high- viscosity hydrochloric dry casein by taking 'qula'as raw material. It comprises following steps: sifting raw material, disintegrating, color protecting, stirring, dissloving; filtering, pumping material liquid into centrifugal machine with the rotary speed being 6500r/ min- 8000r/ min and flow quantity being 1500 l/h- 2000l/h; adding tackiness agent alumen at 30- 42 Deg. C, the addition amount is at least 0.1% of that of dry material; stirring; regulating pH with 5- 15% of hydrochloric acid to 3.8- 4.6 to deposite casein; washing deposited casein with clean water; dewatering; granulating with granulation machine of 30- 60 order; drying granulated material at 35- 65 Deg. C in drying machine for 25- 30 minutes. The invention is characterized in that it employs tackiness agent and second- time coloring protecting process to improve product property, and the product is characterized by high viscosity, no peculiar smell and stable performance.
Description
Technical field:
The present invention relates generally to the preparation method of casein food grade, and relating in particular to " song draws " is the method for feedstock production high viscosity hydrochloric acid casein.
Background technology:
High viscosity hydrochloric acid casein is a casein containing protein more than 92%, little Huang of color and luster or oyster white, the particulate state of no stink or pulverulent material.Be widely used in the synthetic casein plastic of industry, casein glue production, sizing agent processing etc.High viscosity hydrochloric acid casein has following characteristics and character: the conglomeration that easily absorbs water is expanded; The casein macromole makes solution produce higher viscosity, and retrogradation is thick, becomes gel again after the solution cooling, becomes solution after gel is heated again.The gel high resilience, and can keep moisture, dehydration is not shunk hardly; Have very strong emulsification thickening power, its molecule has many hydrophilic radicals and hydrophobic grouping, and adsorbable water and lipoid material make solution have greasy characteristic after the emulsification; The high viscosity hydrochloric acid casein molecular energy is isolated micro-bubble, keeps the foam nonjoinder, and is not broken; High viscosity hydrochloric acid casein has a wide range of applications in industries such as leather, light textile, papermaking, national defense industry as a kind of important chemical material.Aspect paper industry, be used as sizing agent, lustering agent, tamanori etc.; In leather industry, be used for the leatheroid tanning agent, tamanori etc.; In building trade, be a kind of waterproof, fire prevention, high strength, decorative coating; In the steel equipment manufacturing and in using as high rigidity acid-proof coating; Aspect electrochemistry, be used for electroplating industry wastewater treatment and non-ferrous metal and reclaim; At pottery, carry out the surface treatment of the electroless plating of metallic substance such as copper, nickel, cobalt on the non-metallic material such as glass.
At present, also exist many problems in China's " song draws " high viscosity hydrochloric acid casein process for processing.In traditional casein food grade complete processing, can't control the viscosity of product, the height of the viscosity of product can only be to be decided by raw material with hanging down, let alone production high viscosity casein food grade.Color and luster often appears in common casein food grade when producing yellow dark, and acidity is lower, and viscosity is low, and smell is not good, and quality can not be up to standard, can not satisfy high purity heavy viscous casein food grade product in short supply on the market, and the production marketing price is lower.
There are countries such as New Zealand, Australia, Russia and Ukraine in the main in the world country that produces outlet bovine casein product, but be with fresh milk is raw material production, price is than the high 25%-30% of China's " song draws " casein food grade, it is bigger that product quality differs, and the casein food grade majority that utilizes fresh milk to produce is low viscosity all, and viscosity is no more than 2000mPas.
Summary of the invention:
The preparation method who the objective of the invention is to avoid the deficiencies in the prior art part and a kind of high viscosity hydrochloric acid casein is provided.High viscosity hydrochloric acid casein is to adopt the Qu Lawei raw material, through material dissolution, filtration, centrifugal, the product that adds auxiliary material, make through the acid of hydrochloric acid point, dehydration, granulation, drying.Its viscosity can reach 100000mPas.
Purpose of the present invention can be by realizing by the following technical solutions: a kind of preparation method of high viscosity hydrochloric acid casein, include raw material screening, be crushed to the 30-90 order with pulverizer, with 1: the water of ratio (6-16) drops into dissolving vessel, and the 2.28-4.58% that pressed raw material before dropping into raw material adds S-WAT (Na
2SO
3), and be warming up to 35-45 ℃, and slowly add the sodium hydroxide solution of 10-20%, make material liquid pH value reach 8.5-10.5, temperature rises to 50-60 ℃, the dissolving that picks up counting, vat powder (Sodium Hydrosulphite, the Na of adding 1.19-2.79% behind the 15-25min
2S
2O
4), stir 40-50min to dissolving; With high-pressure pump feed liquid is squeezed into 50-200 order reciprocating sieve and filter, subsequently feed liquid is pumped into rotating speed and be that 6500r/min～8000r/min whizzer carries out is centrifugal, flow is 1500l/h-2000l/h; In temperature is 30 ℃-42 ℃, waits and stirs fully back interpolation tackifier alum, and addition is at least the 0.1-0.1% of siccative; After stirring; Hydrochloric acid with 5-15% makes material liquid pH value drop to pH3.8-4.6, causes casein to precipitate fully; With the good casein of soft water washing and precipitating; The dehydration of washing back; Dehydration is after the granulation of granulator 30-60 order; Through granulated materials at 35-65 ℃, loft drier inner drying, time 25～30min.The described raw material of the preparation method of described high viscosity hydrochloric acid casein is that color and luster, smell are normal.
Tackifier of the present invention are alum, press the tackifier that siccative increases one percentage point, and viscosity increases by 1000～1500mPas.As required high viscosity can reach more than 100000 mPas.
The described rotating speed that pumps into of the preparation method of described high viscosity hydrochloric acid casein is that 7500r/min～8000r/min whizzer carries out secondary centrifuging at least, flow is 1500/h-2000l/h.Describedly clean secondary at least with the good casein of soft water washing and precipitating.Described dehydration is carried out with plate-and-frame filter press or with the casein bag weaved stacking extruding in ventilated environment of plastics of packing into.Described drying is in suction type fluidized drying case drying, time 25～30min or 0.3-0.6KPa vacuum drying oven drying, time 1.8-2.2h.
In the casein food grade production process, the deep yellow of generation or brown material mainly are the results of Maillard reaction.Maillard reaction is the reaction that reducing sugar and protein take place, the reaction process complexity, and intermediate product is numerous.Generally be divided into three phases: 1. starting stage.Aldehyde radical and aminocompound carry out condensation reaction and form schiff bases, form corresponding N-replacement aldose base amine through cyclisation again, form (1-amino-1-deoxidation-ketose) through resetting.2. intermediate stage.The three-line that the Amadori compound reacts: the one, carry out 1 under the acidic conditions, the reaction of 2-enolization generates hydroxymethylfurfural (HMF); The 2nd, carry out 2 under the alkaline condition, the reaction of 3-enolization, produce reductones; The 3rd, proceed scission reaction and form the Strecker aldehydes.3. terminal stage.This stage is complicated, and mechanism it be unclear that so far.Generate melanoidin (Melaneidin) at last.Maillard reaction is subjected to the influence of chemical constitution in temperature, heat-up time, water-activity, pH value, humidity and the food system, suppress quite difficulty of Maillard reaction fully, numerous because influence the factor of Maillard reaction again, effectively suppressing Maillard reaction must be multiple factor synergy.
Colour protecting agent I, II all belong to sulfites, sulfites is widely used SYNTHETIC OPTICAL WHITNER, it can effectively suppress the Maillard reaction process, the brown stain mechanism that sulfites suppresses Maillard reaction mainly is: 1. addition reaction: the carbonyl of reactant can with inferior sulfate radical in conjunction with forming addition compound, its adduct can with aminocompound generation condensation reaction, but condensation product can not further generate Schiff alkali and N-Glucoamino again, stoped the further generation of Maillard reaction, thereby the obvious suppression effect has been arranged.Reaction equation is:
In addition, inferior sulfate radical can also combine with the carbonyl of intermediate product and form addition compound, the brown stain activity of these addition compound is far below aminocompound and the formed intermediate product of reducing sugar, and the actual reaction that equals to make the back generate melanoidin is difficult to take place, and reaction equation is:
The result of addition makes organism lose two keys or reduces two keys, thereby color is lost or shoals.Therefore the brown stain of sulphite inhibition Maillard reaction mainly is because sulphite has been caught the active intermediate of strong brown stain, and has generated the very low intermediate product of brown stain activity, thereby has suppressed Maillard reaction.2. reduction reaction: because sulphite is reductive agent, can produce reductive action, stop or slow down the generation of some intermediate product reaction, thereby avoid or reduce the generation of pigment.Other mechanism: sulphite can also oxygen consumed and is reduced the pH value of solution in addition, has stoped the generation of Maillard reaction indirectly.But single use reductive agent decolorizing effect instability, some practical applications show that the two keys that have been reduced easily recover under the condition of aerobic or oxygenant existence, oxygenizement has reduced the reductive agent content in the system, thereby the color reversion phenomenon occurred.Therefore when using the reductive agent decolouring, must reduce and the contacting of oxygen, or use antioxidant, reductive agent and stablizer to be shared, decolorizing effect is comparatively stable.
The present invention adopts the secondary color protecting method, once protects look and carries out when song draws dissolving.Draw to be equipped with in the process fresh milk at song and to have produced brown stain through links such as peracid treatment and subsequent technique dehydration, dryings, make song draw quality to descend, reason is that the carbonyl ammonia react has taken place, and has produced melanoidin or has claimed to intend to deceive smart class material.Draw when adding alkali dissolution at song, add S-WAT (Na by proportioning
2SO
3) and vat powder (Sodium Hydrosulphite, Na
2S
2O
4) and stir, mainly be in order to decompose or to destroy class melanochrome material, reduce the precursor substance of carbonyl ammonia react, suppress further carrying out of carbonyl ammonia react, reduce the incidence of carbonyl ammonia react in the subsequent technique, playing provide protection to feed liquid.
Draw the low defective of hydrochloric acid casein viscosity at traditional song, the present invention utilizes multiple tackifier to screen, and has determined the kind of tackifier at last.According to the character of tackifier, determine level of factor in conjunction with casein food grade complete processing and casein food grade index influence factor, pass through L
9(3
4) orthogonal test, must be divided into index with viscosity and sense organ, and select optimal treatment condition in conjunction with yield rate, finally determine to add after secondary protects look tackifier, adding temperature is 42 ℃, and addition is at least 0.1% (with siccative), every increase one percentage point, viscosity increases by 1000～1500mPas.
The suction type fluidized drying can make heat-sensitive material reach the exsiccant purpose at a lower temperature, and general pressure is low more, and the boiling point of water is low more.In suction type fluidized drying process, use hot gas flow to carry out drying, make material constantly carry out moisture evaporation in the boiling like this, make the contact area of material and hot steam increase, can not produce the TRANSIENT HIGH TEMPERATURE phenomenon, can finish drying process at short notice, make the browning degree of material in drying process approach minimum.
Because dry leading portion moisture content of material is higher, temperature can suitably be increased to 55 ℃, and dry back segment temperature remains on below 45 ℃.Adopt this processing condition, be about 25～30min time of drying.
The invention has the beneficial effects as follows, draw on the casein food grade production technique basis, new and high technologies such as high speed centrifugation separation, suction type fluidized drying are applied to produce, use tackifier, adopt secondary to protect technologies such as look, utilize composite color fixative to improve product property at traditional song.Make product have characteristics such as viscosity height, lighter color, free from extraneous odour, stay in grade.Goods are basic identical with the fresh milk goods on local flavor, effective constituent, reached high-quality casein food grade standard.
Description of drawings:
Fig. 1 is a process flow sheet of the present invention.
Embodiment:
Most preferred embodiment shown below is described in further detail:
Embodiment 1: see Fig. 1, a kind of preparation method of 7600mPas viscosity hydrochloric acid casein has color and luster, 100 tons of screenings of the normal raw material of smell, is crushed to 40 orders with pulverizer, water with 1: 14 ratio drops into dissolving vessel, pressed 4.28% of raw material and add S-WAT (Na before dropping into raw material
2SO
3), and be warming up to 40 ℃, and slowly add 20% sodium hydroxide solution, make material liquid pH value reach 9.5, temperature rises to 55 ℃, the dissolving that picks up counting, powder (Sodium Hydrosulphite, Na take a policy behind the 20min
2S
2O
4), press 1.79% of dry material and add, stir 30min to dissolving; With high-pressure pump feed liquid is squeezed into 100 order reciprocating sieves and filter, subsequently feed liquid is pumped into rotating speed and be that 7500r/min～8000r/min whizzer carries out is centrifugal, carry out secondary centrifuging, flow is 1500l/h-2000l/h; In temperature is 42 ℃, waits and stirs fully back interpolation tackifier alum, and viscosity requires 7600mPas, and addition is 1% of a siccative; After stirring; Hydrochloric acid with 10% makes material liquid pH value drop to pH4.1, causes casein to precipitate fully; With the good casein of soft water washing and precipitating, clean secondary; The dehydration of washing back; Dehydration is after the granulation of granulator 30-60 order; Through granulated materials 45-55 ℃, at suction type fluidized drying case inner drying, time 25～30min.Yield rate 〉=80%.
According to the GB10707-1989 requirement, Gansu Province's quality inspection center preproduction carries out the detection (seeing attached list) of quality index such as sense organ, physics and chemistry, microorganism.The result shows that every index all meets national standard, sees Table 1.
Table 1 song is drawn high viscosity casein food grade quality test result
| Interventions Requested | Standard-required | Measured value | The individual event conclusion |
| Sense organ protein (in butt) % fat % lactose % ash content % moisture % pH value viscosity mPas arsenic (in As) % heavy metal (in Pb) % total plate count cfu/g coliform MPN/100g pathogenic bacteria | This product is off-white powder; Nothing is smelt, and tasteless 〉=90.0≤2.0≤1.0≤2.0≤12 6.0-7.5≤0.0002≤0.002≤30≤40 must not detect | Off-white powder; Nothing is smelt, and tasteless 93.0 1.5 0.4 1.7 11.78 6.8 7600＜0.0002＜0.002 20＜30 do not detect | Meet |
Embodiment 2: a kind of preparation method of 100000mPas viscosity hydrochloric acid casein, have color and luster, 100 tons of screenings of the normal raw material of smell, be crushed to 40 orders with pulverizer,, before dropping into raw material, press 4.28% of raw material and add S-WAT (Na with the water input dissolving vessel of 1: 14 ratio
2SO
3), and be warming up to 40 ℃, and slowly add 20% sodium hydroxide solution, make material liquid pH value reach 9.5, temperature rises to 55 ℃, the dissolving that picks up counting, powder (Sodium Hydrosulphite, Na take a policy behind the 20min
2S
2O
4), press 1.79% of dry material and add, stir 30min to dissolving; With high-pressure pump feed liquid is squeezed into 100 order reciprocating sieves and filter, subsequently feed liquid is pumped into rotating speed and be that 7500r/min～8000r/min whizzer carries out is centrifugal, carry out secondary centrifuging, flow is 1500l/h-2000l/h; In temperature is 42 ℃, waits and stirs fully back interpolation tackifier alum, and viscosity requires 100000mPas, and addition is 8% of a siccative; After stirring; Hydrochloric acid with 10% makes material liquid pH value drop to pH4.1, causes casein to precipitate fully; With the good casein of soft water washing and precipitating, clean secondary; The dehydration of washing back; Dehydration is after the granulation of granulator 30-60 order; Through granulated materials 45-55 ℃, at suction type fluidized drying case inner drying, time 25～30min.Yield rate 〉=80%.
Embodiment 3: a kind of preparation method of 20000mPas viscosity hydrochloric acid casein, have color and luster, 100 tons of screenings of the normal raw material of smell, be crushed to 40 orders with pulverizer,, before dropping into raw material, press 4.28% of raw material and add S-WAT (Na with the water input dissolving vessel of 1: 14 ratio
2SO
3), and be warming up to 40 ℃, and slowly add 20% sodium hydroxide solution, make material liquid pH value reach 9.5, temperature rises to 55 ℃, the dissolving that picks up counting, powder (Sodium Hydrosulphite, Na take a policy behind the 20min
2S
2O
4), press 1.79% of dry material and add, stir 30min to dissolving; With high-pressure pump feed liquid is squeezed into 100 order reciprocating sieves and filter, subsequently feed liquid is pumped into rotating speed and be that 7500r/min～8000r/min whizzer carries out is centrifugal, carry out secondary centrifuging, flow is 1500l/h-2000l/h; In temperature is 42 ℃, waits and stirs fully back interpolation tackifier alum, and viscosity requires 20000mPas, and addition is 4% of a siccative; After stirring; Hydrochloric acid with 10% makes material liquid pH value drop to pH4.1, causes casein to precipitate fully; With the good casein of soft water washing and precipitating, clean secondary; The dehydration of washing back; Dehydration is after the granulation of granulator 30-60 order; Through granulated materials 45-55 ℃, at suction type fluidized drying case inner drying, time 25～30min.
Claims (7)
1. the preparation method of a high viscosity hydrochloric acid casein includes raw material screening, is crushed to the 30-90 order with pulverizer, and with 1: the water of ratio (6-16) drops into dissolving vessel, pressed the heavy 2.28-4.58% of raw material and add S-WAT (Na before dropping into raw material
2SO
3), and be warming up to 35-45 ℃, and slowly add the sodium hydroxide solution of 10-20%, make material liquid pH value reach 8.5-10.5, temperature rises to 50-60 ℃, the dissolving that picks up counting, vat powder (Sodium Hydrosulphite, the Na of adding 1.19-2.79% behind the 15-25min
2S
2O
4), stir 40-50min to dissolving; With high-pressure pump feed liquid is squeezed into 50-200 order reciprocating sieve and filter, subsequently feed liquid is pumped into rotating speed and be that 6500r/min～8000r/min whizzer carries out is centrifugal, flow is 1500l/h-2000l/h; In temperature is 30 ℃-42 ℃, waits and stirs fully back interpolation tackifier alum, and addition is at least the 0.1-0.1% of siccative; After stirring; Hydrochloric acid with 5-15% makes material liquid pH value drop to pH3.8-4.6, causes casein to precipitate fully; With the good casein of soft water washing and precipitating; The dehydration of washing back; Dehydration is after the granulation of granulator 30-60 order; Through granulated materials at 35-65 ℃, loft drier inner drying, time 25～30min.
2. the preparation method of high viscosity hydrochloric acid casein as claimed in claim 1 is characterized in that described raw material is that color and luster, smell are normal.
3. the preparation method of high viscosity hydrochloric acid casein as claimed in claim 1 is characterized in that described tackifier are alum, and pressing the siccative per kilogram increases one percentage point, and viscosity increases by 1000～1500mPa.s.
4. the preparation method of high viscosity hydrochloric acid casein as claimed in claim 1 is characterized in that the described rotating speed that pumps into is that 6500r/min～8000r/min whizzer carries out secondary centrifuging at least, and flow is 1500l/h-2000l/h.
5. the preparation method of high viscosity hydrochloric acid casein as claimed in claim 1 is characterized in that describedly cleaning secondary at least with the good casein of soft water washing and precipitating.
6. the preparation method of high viscosity hydrochloric acid casein as claimed in claim 1 is characterized in that described dehydration is carried out with plate-and-frame filter press or with the casein bag weaved stacking extruding in ventilated environment of plastics of packing into.
7. the preparation method of high viscosity hydrochloric acid casein as claimed in claim 1 is characterized in that described drying in suction type fluidized drying case drying, time 25～30min or 0.3-0.6KPa vacuum drying oven drying, time 1.8-2.2h.
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|---|---|---|---|
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101717440B (en) * | 2009-12-07 | 2012-02-08 | 天津科技大学 | method for preparing casein |
| CN103073630A (en) * | 2013-01-23 | 2013-05-01 | 香格里拉县康美乳业开发有限责任公司 | Process for producing citric acid caseins by using yak milk dregs as raw materials |
| CN104026327A (en) * | 2014-06-19 | 2014-09-10 | 甘肃普罗生物科技有限公司 | Production method for modified casein |
| CN104028158A (en) * | 2013-03-04 | 2014-09-10 | 甘肃普罗生物科技有限公司 | Automatic feeding device for production of casein |
| CN106620746A (en) * | 2015-11-02 | 2017-05-10 | 中国石油化工股份有限公司 | Method used for reducing inhibition effect of Maillard reaction on microorganism growth and fermentation |
| CN113248589A (en) * | 2021-06-30 | 2021-08-13 | 中国海洋大学 | Preparation method of Qula casein |
-
2006
- 2006-09-01 CN CN200610104523A patent/CN100595205C/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101717440B (en) * | 2009-12-07 | 2012-02-08 | 天津科技大学 | method for preparing casein |
| CN103073630A (en) * | 2013-01-23 | 2013-05-01 | 香格里拉县康美乳业开发有限责任公司 | Process for producing citric acid caseins by using yak milk dregs as raw materials |
| CN104028158A (en) * | 2013-03-04 | 2014-09-10 | 甘肃普罗生物科技有限公司 | Automatic feeding device for production of casein |
| CN104026327A (en) * | 2014-06-19 | 2014-09-10 | 甘肃普罗生物科技有限公司 | Production method for modified casein |
| CN104026327B (en) * | 2014-06-19 | 2016-06-08 | 甘肃普罗生物科技有限公司 | The production method of a kind of modified casein |
| CN106620746A (en) * | 2015-11-02 | 2017-05-10 | 中国石油化工股份有限公司 | Method used for reducing inhibition effect of Maillard reaction on microorganism growth and fermentation |
| CN106620746B (en) * | 2015-11-02 | 2019-06-14 | 中国石油化工股份有限公司 | A method of it reducing Maillard reaction and microorganism growth and fermentation inhibitory is acted on |
| CN113248589A (en) * | 2021-06-30 | 2021-08-13 | 中国海洋大学 | Preparation method of Qula casein |
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|---|---|
| CN100595205C (en) | 2010-03-24 |
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