CN103740786A - Method for preparing potato extract powder by utilizing potato starch wastewater - Google Patents
Method for preparing potato extract powder by utilizing potato starch wastewater Download PDFInfo
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- CN103740786A CN103740786A CN201410015439.1A CN201410015439A CN103740786A CN 103740786 A CN103740786 A CN 103740786A CN 201410015439 A CN201410015439 A CN 201410015439A CN 103740786 A CN103740786 A CN 103740786A
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Abstract
The invention discloses a method for preparing potato extract powder by utilizing potato starch wastewater and belongs to the technical field of food processing. The method disclosed by the invention comprises the following steps: firstly performing impurity removal and concentration on the potato starch wastewater; then pumping a concentrated solution into an enzymolysis tank, performing enzymolysis three times with medium-temperature amylase, glucoamylase and neutral protease (or composite protease) respectively, and then killing enzymes; and re-concentrating and spray-drying a hydrolysate to obtain a product, namely the potato extract powder. According to the method disclosed by the invention, the potato extract powder containing a large quantity of amino acids and peptide type substances is manufactured by utilizing the potato starch wastewater through a biological engineering means, thereby turning waste into treasure, realizing low cost, high added value of the product and very huge competitive advantages, and simultaneously solving the problems of starch wastewater control and discharge.
Description
Technical field
The present invention relates to a kind of method of utilizing potato starch wastewater to prepare potato leaching powder, belong to food processing technology field.
Background technology
China's yam starch secondary industry development in recent years is rapid, according to investigations, family more than 2000 of current national Starch Production enterprise, the year processing total amount of potato is up to more than 800 ten thousand tons, and wherein yam starch annual working ability reaches more than 120 ten thousand tons.In technique of producing potato starch, mainly contain three kinds of products: major product is yam starch, byproduct is potato slag and factory effluent.Wherein the treatment process of potato slag is very simple and be difficult for polluting, potato starch wastewater, owing to containing large weight organic compounds, as protein and sugar class etc., also contains the nutritive substances such as some starch granuless, fiber and potassium, phosphorus, calcium, need, after waste water treatment process is processed, can discharge.Potato starch wastewater water-quality constituents is as follows: COD (chemical oxygen demand (COD)) is about: 10000-25000mg/L; BOD (biochemical oxygen demand (BOD)) is about: 5000-12000mg/L; SS (suspended substance) is about: 5000-10000mg/L.Every year because yam starch is processed the high-concentration acid organic wastewater (abbreviation potato starch wastewater) of discharging up to more than 2 000 ten thousand tons.Potato starch wastewater principal feature: 1. organic concentration is high; 2. B/C value is high, can carry out biochemical treatment; 3. be slightly acidic, pH is generally 4～6; 4. seasonal strong, mainly concentrate on for 9～December, waste water water temperature is low.In view of above feature, potato starch wastewater adopts common biochemical process intractability larger.In order to solve the water pollution problems in yam starch production process, starch enterprise and related scientific research unit have carried out various research work, make some progress.But, can suit China's yam starch enterprise practical, put into the central scientific and technological achievement of production application, yet there are no report.Potato starch wastewater has the feature of high turbidity and high density, if just do not processed, be directly discharged in rivers and lakes, its eutrophication can cause river fishes and shrimps death, the underproduction of farmland, partial area is even had no harvest, and the wastewater fermentation retaining for a long time produces foul gas by the normal productive life of resident having a strong impact near.
For the feature of potato starch wastewater, what domestic application was maximum at present is biochemical process and flocculent precipitation, and its processing cost is about 1.0-1.5 unit/m
3, according to current yam starch industry starch wastewater amount, calculating, waste water overall process cost is probably ten thousand yuan of 2000-3000.Because potato producing region mainly concentrates on area, " three Norths " (northeast, northwest, North China), processing period is in 9-11 month, and temperature is low, has freezing.Particularly, in the l0-11 month, low temperature is all between-5～15 ℃.And no matter biological treatment is anaerobic process, or aerobic method, all need the working temperature of 25 ℃ of left and right, some anaerobic treatment process water temperature need to be controlled at 35 ℃ of left and right, otherwise treatment effect is very poor.Therefore, although that domestic research biological process is processed the scientific research institutions of potato starch wastewater is more, enterprise practical there is no application example, even and if sewage treatment project is built up and also cannot be guaranteed normal operation.These problems have increased difficulty to the processing of potato starch wastewater, and therefore the wastewater treatment level of yam starch enterprise generally falls behind at present, and environmental pollution is serious, causes environment water anoxic, makes hydrobiont death by suffocation.
In recent years, along with water resources shortage and water pollution problems are on the rise more and more outstandingly with the swift and violent contradiction increasing of water requirement, domestic processing to potato starch wastewater and comprehensive utilizating research become the focus of attention of scientific research institution and enterprise gradually.Traditional technology is processed the object of potato starch wastewater just for the pollutent in degrading waste water, and has ignored wherein recovery and the comprehensive utilization of useful component, causes the waste of resource.Should develop and can effectively process potato starch wastewater, can reclaim again the novel process of its effective constituent, to reduce cost for wastewater treatment, realize energy-saving and emission-reduction, turn waste into wealth.
Summary of the invention
The present invention has overcome above-mentioned the deficiencies in the prior art, and a kind of method of utilizing potato starch wastewater to prepare potato leaching powder is provided.The method, take potato starch wastewater as raw material, adopts biotechnology that the protein in potato waste water and starchy material are processed, and the potato that finally obtains high added value is leached powder.The method can effectively be processed potato starch wastewater, effective constituent wherein fully can be recycled again, realizes energy-saving and emission-reduction, turns waste into wealth.
Technical scheme of the present invention is: a kind of method of utilizing potato starch wastewater to prepare potato leaching powder, it is characterized in that,
(1) potato starch wastewater is removed to residual silt and other macrobead insolubless in waste water through centrifugation apparatus (separating factor is 1000-3000) or filter plant (flame filter press); Then clear liquid being concentrated into solid content through multi-stages Film EvaporationEquipmentDesign or nano-filtration membrane equipment is 2-5%;
(2) then concentrated solution is pumped into enzymatic vessel, regulating concentrated solution pH value is 5.5-7.0, adds the quality of 0.002-0.01%(in concentrated solution) middle temperature amylase (enzyme work >=2000u/g), be warming up to 85-90 ℃, be incubated enzymolysis 20-40min;
(3) be cooled to 55-60 ℃, add the quality of 0.001%-0.005%(in concentrated solution) saccharifying enzyme (enzyme work >=100000u/ml), insulation enzymolysis 30-90min;
(4) be then cooled to 50-55 ℃, regulating pH value is 6.5-7.5, adds the quality of 0.001%-0.01%(in concentrated solution) neutral protease (enzyme work >=50000u/g); Or continue to keep 55-60 ℃, adjustings pH is 7.0-8.0, adds the quality of 0.001%-0.01%(in concentrated solution) compound protease, be incubated enzymolysis 30-120min;
(5) be warming up to 100 ℃ and maintain 10-30min, enzyme goes out; Hydrolysate is pumped into multiple-effect falling film formula vaporizer again, and being concentrated into solid content is 20-30%, sprays dry, and product is potato and leaches powder.
Described potato starch wastewater, main component and content: starch 0.2-0.5%; Protein 0.2-0.6%; Trace element: 0.05-0.15%.
Described albumen prozyme is preferably: the prozyme of Alcase proteolytic enzyme (enzyme 2.4AU/g alive) and 2709 Sumizyme MPs (enzyme >=20 ten thousand u/g alive); The two mass ratio is 1:1-2.
The prepared potato of the present invention is leached the technical indicator (wt%) of powder: dextrin+glucose: 30-45%; Amino acid+small-molecule peptide material: 35-50%; Trace element: 5-15%.
The invention has the beneficial effects as follows: utilize potato starch wastewater to produce by biotechnology means the potato that contains a large amount of amino acid and peptide matters and leach powder, turn waste into wealth, with low cost, added value of product is high, there is very huge competitive edge, having solved starch wastewater simultaneously and administered and emission problem, is to kill two birds with one stone.
Embodiment
The example of embodiment 1:(compound protease)
(1) main component of potato starch wastewater and content: starch 0.4%; Protein 0.35%; Trace element: 0.09%;
By 20 tons of above-mentioned yam starch trade effluents, through disk plate centrifuge (separating factor is 1000), remove residual silt and other macrobead insolubless in waste water, the clear liquid obtaining is concentrated into 5 tons through falling film type multifunctional evaporating equipment, and solid content is about 3.40%;
(2) then concentrated solution is pumped into enzymatic vessel, add micro-10N NaOH to regulate concentrated solution pH value for 5.5-7.0, add the middle temperature amylase (Mei Yemeihuo unit is 2000u/g) of 0.5kg, be warming up to 85-90 ℃, after insulation enzymolysis 30min, be cooled to 55-60 ℃, add the saccharifying enzyme liquid (Mei Yemeihuo unit is 100000u/ml) of 0.25kg, insulation enzymolysis 60min, then adding 10N NaOH to regulate pH is 7.0-8.0, (2709 Sumizyme MP enzyme work are 250,000 U/g to add the compound protease of 0.3kg, Alcase proteolytic enzyme and 2709 Sumizyme MP prozymes, the two ratio is 1:1.5), 55-60 ℃ of insulation enzymolysis 90min,
(3) be warming up to 100 ℃ and maintain 30min, the enzyme that goes out, pumps into falling film type multiple-effect evaporator again by hydrolysate, is concentrated into 0.6 ton (solid content is about 25%), sprays dry, and product is potato and leaches powder.
The prepared potato of the present invention is leached the technical indicator of powder: dextrin+glucose: 40%; Amino acid+small-molecule peptide material: 38%; Trace element: 9.8%, moisture 10%, other are 2.2% years old.
Embodiment 2(directly adopts the example of protease hydrolyzed)
(1) main component of potato starch wastewater and content: starch 0.4%; Protein 0.35%; Trace element: 0.09%;
10 tons of above-mentioned yam starch trade effluents, remove residual silt and other macrobead insolubless in waste water through flame filter press, and the clear liquid obtaining is concentrated into 2 tons through falling film type multifunctional evaporating equipment, are about 4.20% to solid content;
(2) then concentrated solution is pumped into enzymatic vessel, add micro-10N NaOH to regulate concentrated solution pH value for 5.5-7.0, add the middle temperature amylase (Mei Yemeihuo unit is 2000u/g) of 0.2kg, be warming up to 85-90 ℃, after insulation enzymolysis 30min, be cooled to 55-60 ℃, add the saccharifying enzyme liquid (Mei Yemeihuo unit is 100000u/ml) of 0.10kg, insulation enzymolysis 60min; Then be cooled to 50-55 ℃, add 10N NaOH to regulate pH value for 6.5-7.5, add the neutral protease (enzyme is lived as 50000U/g) of 0.15kg, insulation enzymolysis 120min;
(3) be warming up to 100 ℃ and maintain 20min, the enzyme that goes out, pumps into falling film type multiple-effect evaporator again by hydrolysate, is concentrated into 0.4 ton (solid content is about 21%), sprays dry, and product is potato and leaches powder.
The prepared potato of the present invention is leached the technical indicator of powder: dextrin+glucose: 42%; Amino acid+small-molecule peptide material: 36%; Trace element: 9.8%, moisture 10%, other are 2.2% years old.
Embodiment 3
(1) main component of potato starch wastewater and content: starch 0.4%; Protein 0.35%; Trace element: 0.09%;
10 tons of above-mentioned yam starch trade effluents, remove residual silt and other macrobead insolubless in waste water through flame filter press, and the clear liquid obtaining is concentrated into 3 tons through nano-filtration membrane equipment, are about 2.50% to solid content;
(2) then concentrated solution is pumped into enzymatic vessel, add micro-10N NaOH to regulate concentrated solution pH value for 5.5-7.0, add the middle temperature amylase (Mei Yemeihuo unit is 2000u/g) of 0.25kg, be warming up to 85-90 ℃, after insulation enzymolysis 30min, be cooled to 55-60 ℃, add the saccharifying enzyme liquid (Mei Yemeihuo unit is 100000u/ml) of 0.15kg, soaking time is 60min; Then be cooled to 50-55 ℃, add 10N NaOH to regulate pH value for 6.5-7.5, add the neutral protease (enzyme is lived as 50000U/g) of 0.20kg, insulation enzymolysis 120min;
(3) be warming up to 100 ℃ and maintain 20min, the enzyme that goes out, pumps into falling film type multiple-effect evaporator again by hydrolysate, is concentrated into 0.35 ton (solid content is about 25%), sprays dry, and product is potato and leaches powder.
The prepared potato of the present invention is leached the technical indicator of powder: dextrin+glucose: 43.5%; Amino acid+small-molecule peptide material: 39.6%; Trace element: 7.2%, moisture 8%, other are 1.7% years old.
Claims (9)
1. utilize potato starch wastewater to prepare a method for potato leaching powder, it is characterized in that,
(1) potato starch wastewater is removed to residual silt and other macrobead insolubless wherein through centrifugation apparatus or filter plant; Then through multi-stages Film EvaporationEquipmentDesign or nano-filtration membrane equipment, be concentrated into the concentrated solution that solid content is 2-5 wt %;
(2) then concentrated solution is pumped into enzymatic vessel, regulating concentrated solution pH value is 5.5-7.0, adds the middle temperature amylase of 0.002-0.01%, is warming up to 85-90 ℃, insulation enzymolysis 20-40min;
(3) be cooled to 55-60 ℃, add the saccharifying enzyme of 0.001-0.005%, insulation enzymolysis 30-90min;
(4) be then cooled to 50-55 ℃, regulating pH value is 6.5-7.5, adds the neutral protease of 0.001-0.01%, insulation enzymolysis 30-120min; Or continue to keep 55-60 ℃, adjusting pH is 7.0-8.0, adds the compound protease of 0.001%-0.01%, insulation enzymolysis 30-120min;
(5) be warming up to 100 ℃ and maintain 10-30min, enzyme goes out; Hydrolysate is pumped into multiple-effect falling film formula vaporizer again, and being concentrated into solid content is 20-30%, sprays dry, and product is potato and leaches powder;
The add-on of above-mentioned middle temperature amylase, saccharifying enzyme, neutral protease, compound protease is all the quality in step (2) concentrated solution.
2. a kind of method of utilizing potato starch wastewater to prepare potato leaching powder as claimed in claim 1, is characterized in that described potato starch wastewater, main component and content: starch 0.2-0.5wt%; Protein 0.2-0.6wt%; Trace element 0.05-0.15wt%.
3. a kind of method of utilizing potato starch wastewater to prepare potato leaching powder as claimed in claim 1, is characterized in that, described albumen prozyme is: the prozyme of Alcase proteolytic enzyme and 2709 Sumizyme MPs; The two mass ratio is 1:1-2.
4. a kind of method of utilizing potato starch wastewater to prepare potato leaching powder as claimed in claim 3, is characterized in that, described Alcase proteinase activity is 2.4AU/g; Described 2709 Sumizyme MP enzymes >=20 ten thousand u/g alive.
5. a kind of method of utilizing potato starch wastewater to prepare potato leaching powder as described in any one in claim 1-4, is characterized in that described middle temperature amylase enzyme work >=2000u/g.
6. a kind of method of utilizing potato starch wastewater to prepare potato leaching powder as described in any one in claim 1-4, is characterized in that described glucoamylase enzyme work >=100000u/ml.
7. a kind of method of utilizing potato starch wastewater to prepare potato leaching powder as described in any one in claim 1-4, is characterized in that described neutral protease enzyme work >=50000u/g.
8. a kind of method of utilizing potato starch wastewater to prepare potato leaching powder as described in any one in claim 1-4, is characterized in that, the separating factor of described step (1) is 1000-3000.
9. the potato that in claim 1-4 prepared by the method described in any one is leached powder, it is characterized in that dextrin+glucose: 30-45%; Amino acid+small-molecule peptide material: 35-50%; Trace element: 5-15%.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106967763A (en) * | 2017-02-22 | 2017-07-21 | 湖北金悦农产品开发有限公司 | A kind of method that utilization sweet potato starch waste water prepares sugar and polypeptide product |
| CN109090436A (en) * | 2018-09-07 | 2018-12-28 | 四川农业大学 | A kind of deodorant flavouring method of potato processing juice |
| CN114410725A (en) * | 2022-03-17 | 2022-04-29 | 西安全奥生物科技有限公司 | Enzymolysis and decoloration method for protein in potato starch wastewater |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102559811B (en) * | 2012-03-15 | 2013-04-17 | 吴允山 | Method of preparing sugar by utilizing sweet potato residues |
| CN102618602B (en) * | 2012-03-30 | 2013-05-15 | 吴允山 | Process for preparing sugar by performing enzymatic hydrolysis on sweet potato residues |
| CN102993317B (en) * | 2012-12-27 | 2015-08-12 | 吉林农业大学 | Uhf electromagnetic wave extracts the method for yam starch |
| CN102993318B (en) * | 2012-12-27 | 2015-01-14 | 吉林农业大学 | Method for extracting potato starch by ultrasonic wave |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106967763A (en) * | 2017-02-22 | 2017-07-21 | 湖北金悦农产品开发有限公司 | A kind of method that utilization sweet potato starch waste water prepares sugar and polypeptide product |
| CN109090436A (en) * | 2018-09-07 | 2018-12-28 | 四川农业大学 | A kind of deodorant flavouring method of potato processing juice |
| CN114410725A (en) * | 2022-03-17 | 2022-04-29 | 西安全奥生物科技有限公司 | Enzymolysis and decoloration method for protein in potato starch wastewater |
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