CN109293787A - A kind of pretreated method of low-temp. extrusion improving bean starch recovery rate - Google Patents
A kind of pretreated method of low-temp. extrusion improving bean starch recovery rate Download PDFInfo
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- CN109293787A CN109293787A CN201811170803.6A CN201811170803A CN109293787A CN 109293787 A CN109293787 A CN 109293787A CN 201811170803 A CN201811170803 A CN 201811170803A CN 109293787 A CN109293787 A CN 109293787A
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- 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
- C08B30/02—Preparatory treatment, e.g. crushing of raw materials or steeping process
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- 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
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- 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
- C08B30/06—Drying; Forming
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Abstract
The invention discloses a kind of pretreated methods of low-temp. extrusion for improving bean starch recovery rate, the following steps are included: raw material is added in extruder after cleaning removal of impurities, immersion, broken, FLOTATION SEPARATION, milling, screening, the temperature that 5 sections of extruder are arranged is respectively as follows: 20-30 DEG C of Ith area, II 30-40 DEG C of area, III 40-45 DEG C of area, IV 45-50 DEG C of area, V 50-60 DEG C of area, screw rod revolution is 150-400rpm, bistrique rectangular aperture length-width ratio 5:1.Beans after extrusion is stirred, stands, separate supernatant, leave and take bottom material, then washed, centrifugation, dehydration and drying obtain finished product of starch by the way that lye is added after drying, crushing.Compared with the extraction process of traditional alkaline process wet grinding bean starch, under the premise of guaranteeing purity of starch, soaking time shortens 30-50%, and the base extraction time shortens 20-30%, and starch extraction rate improves 20-25%.The low-temp. extrusion puffing technique simple process that the present invention uses, production cost is low, pollution-free, significantly improves the purity and recovery rate of starch.
Description
Technical field
The present invention relates to extraction process technology fields, and in particular to a kind of low-temp. extrusion for improving bean starch recovery rate is pre-
The method of processing.
Background technique
Starch is the natural polymer for the polyglucose that plant generates through photosynthesis, and bean starch is plant
One of big source of the four of starch, the comparision contents of amylose are high in bean starch, gelatinous transparent degree height high with thermoviscosity,
Gel strength waits by force excellent performances, and it is the very good material for preparing bean vermicelli, bean sheet jelly etc. that purposes is boundless, has greatly exploitation
Value.
Extruding and puffing technology is a kind of novel foods processing technique, compared with other common traditional treatment methods, is squeezed
Pressure puffing technique has many advantages, such as that hot dynamic efficiency is high, production cost is low, nutritive loss is small, product quality is high, pollution-free.It squeezes
Puffing technique processing is conducive to starch and Separation of Proteins in beans, can effectively improve the recovery rate of starch.
The extracting method of the starch used in the prior art, disclose by after sieving raw material and NaOH solution in mass ratio
For 1:15-25 solid-liquid ratio under the conditions of 40-50 DEG C stirring and leaching, leaching liquor is centrifuged, the precipitating of starch is obtained.The party
Method needs the amount of sodium hydroxide big, causes to waste.In addition after using soaking, polishing, filtering, centrifugation, supernatant, addition are removed
Sodium hydroxide solution standing, filter centrifugation, obtain deposit, with water, ethyl alcohol washs precipitating respectively, then filters, and will filter
The filter cake obtained afterwards takes out, dries, and the method water consumption for both obtaining soybean starch is larger, takes a long time, protein resides in starch
Middle recycling is relatively difficult.In addition it is mixed using limewash, is obtained in the method for bean starch after standing centrifugation using lime water logging
Bubble, process flow is complicated, and energy consumption is larger, takes a long time.
Summary of the invention
To solve the above-mentioned problems, the object of the present invention is to provide a kind of low-temp. extrusion for improving bean starch recovery rate is pre-
Extruding and puffing technology is fused in the extraction of bean starch by the method for processing, this method, can reduce traditional soda wet grinding beans
The soaking time and the additive amount of base extraction time and sodium hydroxide of kind of starch extraction process are improving bean starch recovery rate
While reduce production cost and energy consumption so that the production of bean starch has various benefits.
To achieve the goals above, the technical solution adopted in the present invention the following steps are included:
(1) it clears up impurity: choosing high-quality full material bean, remove the sundries such as sandstone, metal block；
(2) impregnate: the beans after cleaning is soaked for a period of time with warm water, easy to fall off with skin of beancurd, and bean cotyledon does not soften most preferably；
(3) be crushed, FLOTATION SEPARATION: the ratio of beans and water 2:1 by volume enter pulverizer, enter floating after crushing
Slot isolates skin of beancurd；
(4) it is milled, sieves: process water is added in broken beans, into grinding in mill then through screening, sift out beans
Slag；
(5) extrusion: the material after screening is fitted into the hopper of extruder, determines the maximum feeding capacity of material, setting
The different silicon carbides of extruder, screw speed, moisture content carry out extrusion process；
(6) drying and crushing: the material of extrusion is crushed after oven drying by pulverizer；
(7) lye stirring, settle and separate: taking smashed material that sodium hydroxide solution is added, be stirred, stand, point
From supernatant, bottom material is stayed；
(8) washing centrifugation: after taking bottom material that salt acid for adjusting pH is added, originally water washing is added, is sunk after being centrifuged
Starch matter；
(9) dehydrate: precipitating is dehydrated by vacuum desiccator, obtains finished product of starch.
It is preferred that raw material includes pea, semen viciae fabae, kidney bean, mung bean, cyperue esculentus, Chenopodiaceae beans in step (1).
Further preferably, 30-40 DEG C of soaking temperature of medium temperature water of step (2), soaking time 4-10h.
Further preferably, extrusion process carries out at low temperature in step (5), and 5 zone temperatures of extruder are respectively Ith area
20-30 DEG C, II 30-40 DEG C of area, III 40-45 DEG C of area, IV 45-50 DEG C of area, V 50-60 DEG C of area, screw rod revolution is 150-400rpm,
Bistrique rectangular aperture length-width ratio 5:1, moisture content of material 15-35%.
Further preferably, in step (7).The mass fraction of middle sodium hydroxide solution is 0.01-0.03%, the pH9- of solution
11, sodium hydroxide solution volume and quality of material ratio are 1:2-1:4, mixing time 10-20min, time of repose 20-
45min。
Further preferably, the mass fraction of hydrochloric acid is 0.01-0.03% in step (8), and adjusting pH is 7, adds water washing 1-3
It is secondary, under revolving speed 3000-5000r/min centrifugal condition, it is centrifuged 2-5 times, time 10-20min.
Further preferably, the temperature of vacuum desiccator used is 45-60 DEG C in step (9).
Beneficial effects of the present invention: the present invention extracts bean starch using the method that low-temp. extrusion puffing technique is handled,
Help to release constraint of the protein matrix to starch granules, compared with traditional alkaline process wet grinding, is guaranteeing purity of starch
Under the premise of reduce the soaking time and lye additive amount of beans, substantially increase the production efficiency of bean starch.Specific manifestation
For the following aspects:
(1) extruding and puffing technology is dissolved into traditional soda wet grinding processing technology by new method provided by the invention, the method
In, remarkable effect is obtained in all respects, and compared with traditional soda wet grinding processing method, warm water soaking time is by past 8-
10h is shortened within 4h, substantially reduces soaking time, improves industrial production efficiency, and the base extraction time reduces 20-
30%, while bean starch recovery rate is had significant economical by being increased to 97.5% using the 73.4% of base extraction merely
Benefit.
(2) bean starch extracted through low-temp. extrusion puffing technique, compared with prior art, the present invention can be effectively reduced
Time-consuming for immersion present in prior art bean starch extraction process, at high cost, low efficiency, high energy consumption, seriously polluted etc. asks
Topic.
(3) device therefor is simple in the present invention, and easy to process, production cost is low, is conducive to industrialized production.
Detailed description of the invention
Fig. 1 is the flow chart of the technical program；
Fig. 2 is the comparison diagram of control group and embodiment starch extraction rate；
Specific embodiment
Process flow of the invention referring to Fig. 1, with reference to the accompanying drawing, embodiment and reference examples, to of the invention specific
Embodiment is described in further detail.
Embodiment 1
Weigh 20kg pea, except impurity therein out, then with 40 DEG C of warm water immersion 4h, with pulverizer to immersion after
Pea is crushed, and the beans addition process water of crushing, which enters in mill, to be ground, and then by screening, the material after screening is added
Into extruder hopper, the temperature in setting five areas of extruder is respectively 20 DEG C of the area I, II 30 DEG C of area, III 40 DEG C of area, the area IV 50
DEG C, 60 DEG C, screw speed 250rpm of the area V, bistrique rectangular aperture length-width ratio 5:1, material moisture 25%, extruded material warp
0.02% lye of mass fraction is added in crushed after being dried after crushing, be stirred 10min, stands 30min, separates supernatant, stays
Bottom material is taken, after 0.02% hydrochloric acid tune pH to 7 is added, originally water washing 2 times are added, under the conditions of revolving speed 4000r/min, into
Row centrifugation 2 times, centrifugation time 10min, separates supernatant, leaves and takes precipitating, then dehydrate, obtain in 55 DEG C of vacuum desiccators
Pea starch finished product, then weighing and calculating.
Embodiment 2
Weigh 20kg semen viciae fabae, except impurity therein out, then with 40 DEG C of warm water immersion 4h, with pulverizer to immersion after
Semen viciae fabae beans are crushed, and the beans addition process water of crushing, which enters in mill, to be ground, and then by screening, the material after screening is added
Enter into extruder hopper, the temperature in setting five areas of extruder is respectively 25 DEG C of the area I, II 35 DEG C of area, III 45 DEG C of area, the area IV 55
DEG C, 60 DEG C, screw speed 300rpm of the area V, bistrique rectangular aperture length-width ratio 5:1, extruded material water content is 25%, extrudate
Material crushes after drying, and 0.02% lye of mass fraction is added after crushing, is stirred 10min, stands 30min, separates supernatant
Liquid leaves and takes bottom material, after 0.02% hydrochloric acid tune pH to 7 is added, originally water washing 2 times is added, in revolving speed 4000r/min condition
Under, centrifugation 2 times, centrifugation time 10min is carried out, supernatant is separated, leaves and takes precipitating, is then dehydrated in 55 DEG C of vacuum desiccators dry
It is dry, Faba bean starch finished product is obtained, then weighing and calculating.
Embodiment 3
Weigh 20kg pea, except impurity therein out, then with 40 DEG C of warm water immersion 4h, with pulverizer to immersion after
Pea is crushed, and the beans addition process water of crushing, which enters in mill, to be ground, and then by screening, the material after screening is added
Into extruder hopper, the temperature in setting five areas of extruder is respectively 30 DEG C of the area I, II 35 DEG C of area, III 45 DEG C of area, the area IV 55
DEG C, 60 DEG C, screw speed 350rpm of the area V, bistrique rectangular aperture length-width ratio 5:1, extruded material water content is 25%, extrudate
Material crushes after drying, and 0.02% lye of mass fraction is added after crushing, is stirred 10min, stands 35min, separates supernatant
Liquid leaves and takes bottom material, after 0.02% hydrochloric acid tune pH to 7 is added, originally water washing 2 times is added, in revolving speed 4000r/min condition
Under, centrifugation 2 times, centrifugation time 10min is carried out, supernatant is separated, leaves and takes precipitating, is then dehydrated in 55 DEG C of vacuum desiccators dry
It is dry, pea starch finished product is obtained, then weighing and calculating.
Reference examples 1
Weigh 20kg pea, remove impurity therein, then impregnate 8h with 40 DEG C of warm water, with pulverizer to immersion after
Pea is crushed, and process water is added in the beans of crushing, and into grinding in mill, then by screening, material after screening is added
0.03% lye of mass fraction is stirred 15min, stands 45min, separates supernatant, leaves and takes bottom material, is added 0.02%
After hydrochloric acid tune pH to 7, originally water washing 2 times are added, under the conditions of revolving speed 4000r/min, carry out centrifugation 2 times, centrifugation time
15min separates supernatant, leaves and takes precipitating, then dehydrate in 55 DEG C of vacuum desiccators, obtain pea starch finished product, so
Weighing and calculating afterwards.
Reference examples 2
Weigh 20kg semen viciae fabae, remove impurity therein, then impregnate 8h with 40 DEG C of warm water, with pulverizer to immersion after
Semen viciae fabae is crushed, and process water is added in the beans of crushing, and into grinding in mill, then by screening, material after screening is added
0.03% lye of mass fraction is stirred 15min, stands 45min, separates supernatant, leaves and takes bottom material, is added 0.02%
After hydrochloric acid tune pH to 7, originally water washing 2 times are added, under the conditions of revolving speed 4000r/min, carry out centrifugation 2 times, centrifugation time
15min separates supernatant, leaves and takes precipitating, then dehydrate in 55 DEG C of vacuum desiccators, obtain Faba bean starch finished product, so
Weighing and calculating afterwards.
Reference examples 3
20kg kidney bean is weighed, impurity therein is removed, then 8h is impregnated with 40 DEG C of warm water, with pulverizer to the rue of immersion
Beans are crushed, and process water is added in the beans of crushing, and into grinding in mill, then by screening, matter is added in material after screening
0.03% lye of score is measured, 15min is stirred, stands 45min, separates supernatant, leaves and takes bottom material, 0.02% salt is added
After acid adjusts pH to 7, originally water washing 2 times are added, under the conditions of revolving speed 4000r/min, carry out centrifugation 2 times, centrifugation time
15min leaves and takes precipitating, then dehydrates in 55 DEG C of vacuum desiccators, obtains kidney bean finished product of starch, then weighing and calculating.
Starch extraction rate (%) in example and comparative example is calculated as follows
Starch extraction rate (%)=(mx×wx%)/(m0×wo%) × 100%
Wherein mxFor the quality of starch isolation object；wxFor the mass fraction of starch in starch isolation object；m0For the matter of beans
Amount；woFor the mass fraction of bean starch.With reference to Fig. 2, used by starch extracting method used by embodiment and reference examples
Starch extracting method, the starch control finally extracted is as shown in table 1,
The recovery rate of the different bean starch of table 1
The content 29-30% that bean starch in example 1-3 and reference examples 1-3 is known by table 1, using being provided in example 1-3
Bean starch extracting method, the recovery rate of starch is greater than 90% or more.Starch extraction rate improves 25% or so.Thus it says
It is bright, starch method extraction efficiency height is extracted using the present invention, it is low in cost, it can be realized large-scale production.
Claims (7)
1. a kind of pretreated method of low-temp. extrusion for improving bean starch recovery rate, which comprises the steps of:
(1) it clears up impurity: choosing high-quality full material bean, remove sundries；
(2) impregnate: the beans after cleaning is impregnated with warm water, easy to fall off with skin of beancurd, and bean cotyledon does not soften most preferably；
(3) be crushed, FLOTATION SEPARATION: the ratio of beans and water 2:1 by volume enter pulverizer, enter floating slot point after crushing
Separate out skin of beancurd；
(4) it is milled, sieves: process water is added in broken beans, into grinding in mill then through screening, sift out bean dregs；
(5) extrusion: the material after screening is fitted into the hopper of extruder, determines the maximum feeding capacity of material, and setting squeezes
The different silicon carbides of machine, screw speed, moisture content carry out extrusion process；
(6) drying and crushing: the material of extrusion is crushed after oven drying by pulverizer；
(7) it lye stirring, settle and separate: takes smashed material that sodium hydroxide solution is added, is stirred, stands, in separation
Clear liquid stays bottom material；
(8) washing centrifugation: after taking bottom material that salt acid for adjusting pH is added, originally water washing is added, sediment is obtained after being centrifuged
Matter；
(9) dehydrate: precipitating is dehydrated by vacuum desiccator, obtains finished product of starch.
2. a kind of pretreated method of low-temp. extrusion for improving bean starch recovery rate according to claim 1, feature
It is, raw material includes pea, semen viciae fabae, kidney bean, mung bean, cyperue esculentus, Chenopodiaceae beans in the step (1).
3. a kind of pretreated method of low-temp. extrusion for improving bean starch recovery rate according to claim 1, feature
It is, the temperature that step (2) the medium temperature water impregnates is 30-50 DEG C, soaking time 4-5h.
4. a kind of pretreated method of low-temp. extrusion for improving bean starch recovery rate according to claim 1, feature
It is, extrusion process carries out at low temperature in the step (5), and 5 zone temperatures of extruder are respectively 20-30 DEG C of Ith area, IIth area
30-40 DEG C, III 40-45 DEG C of area, IV 45-50 DEG C of area, V 50-60 DEG C of area, screw rod revolution is 150-400rpm, bistrique rectangular aperture
Length-width ratio is 5:1, moisture content of material 15-35%.
5. a kind of pretreated method of low-temp. extrusion for improving bean starch recovery rate according to claim 1, feature
It is, the mass fraction of sodium hydroxide solution is 0.01-0.03%, the pH9-11 of solution in the step (7), and sodium hydroxide is molten
Liquid is long-pending and quality of material ratio is 1:2-1:4, mixing time 10-20min, time of repose 20-45min.
6. a kind of pretreated method of low-temp. extrusion for improving bean starch recovery rate according to claim 1, feature
It is, the mass fraction of hydrochloric acid is 0.01-0.03% in the step (8), and adjusting pH is 7, adds water washing 1-3 times, in revolving speed
Under 3000-5000r/min centrifugal condition, it is centrifuged 2-5 times, time 10-20min.
7. a kind of pretreated method of low-temp. extrusion for improving bean starch recovery rate according to claim 1, feature
It is, the temperature of vacuum desiccator used is 45-60 DEG C in the step (9).
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Cited By (2)
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| CN111909280A (en) * | 2019-05-07 | 2020-11-10 | 中国农业机械化科学研究院 | Method for extracting alpha-starch from cyperus esculentus |
| CN113367229A (en) * | 2021-06-23 | 2021-09-10 | 东北农业大学 | Anti-hardening high-protein nutrition bar and preparation method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111909280A (en) * | 2019-05-07 | 2020-11-10 | 中国农业机械化科学研究院 | Method for extracting alpha-starch from cyperus esculentus |
| CN113367229A (en) * | 2021-06-23 | 2021-09-10 | 东北农业大学 | Anti-hardening high-protein nutrition bar and preparation method thereof |
| CN113367229B (en) * | 2021-06-23 | 2022-01-25 | 东北农业大学 | Anti-hardening high-protein nutrition bar and preparation method thereof |
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Application publication date: 20190201 |