CN103766676B - Preparation method of high-transparency purified konjac micro powder - Google Patents

Preparation method of high-transparency purified konjac micro powder Download PDF

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Publication number
CN103766676B
CN103766676B CN201410007349.8A CN201410007349A CN103766676B CN 103766676 B CN103766676 B CN 103766676B CN 201410007349 A CN201410007349 A CN 201410007349A CN 103766676 B CN103766676 B CN 103766676B
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konjaku
alcohol
product
preparation
time
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CN103766676A (en
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姚静
彭小明
罗淋兰
赵婧
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SICHUAN XINXING CHENGMING BIOTECHNOLOGY Co Ltd
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SICHUAN XINXING CHENGMING BIOTECHNOLOGY Co Ltd
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    • AHUMAN NECESSITIES
    • A23FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23LFOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
    • A23L29/00Foods or foodstuffs containing additives; Preparation or treatment thereof
    • A23L29/20Foods or foodstuffs containing additives; Preparation or treatment thereof containing gelling or thickening agents
    • A23L29/206Foods or foodstuffs containing additives; Preparation or treatment thereof containing gelling or thickening agents of vegetable origin
    • A23L29/244Foods or foodstuffs containing additives; Preparation or treatment thereof containing gelling or thickening agents of vegetable origin from corms, tubers or roots, e.g. glucomannan
    • AHUMAN NECESSITIES
    • A23FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23VINDEXING SCHEME RELATING TO FOODS, FOODSTUFFS OR NON-ALCOHOLIC BEVERAGES AND LACTIC OR PROPIONIC ACID BACTERIA USED IN FOODSTUFFS OR FOOD PREPARATION
    • A23V2002/00Food compositions, function of food ingredients or processes for food or foodstuffs

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  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Nutrition Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Polymers & Plastics (AREA)
  • Preparation Of Fruits And Vegetables (AREA)

Abstract

The invention discloses a preparation method of high-transparency purified konjac micro powder. The preparation method comprises the following specific steps: (1) removing surface-adhered impurities, starch, fiber and moisture from konjac fine powder by virtue of a hammer mill, and introducing the konjac fine powder into a raymond mill; (2) further removing the surface-adhered impurities, the starch and the fiber from the konjac fine powder by virtue of the raymond mill, and finely milling the konjac fine powder into a primary konjac fine powder product; (3) soaking the primary konjac fine powder product into alcohol for the first time, and carrying out centrifugal dewatering after the primary konjac fine powder product is adequately dissolved; and (4) soaking the primary konjac fine powder product obtained in the step (3) into the alcohol for the second time, and carrying out shrinking, the centrifugal dewatering and vacuum drying. The preparation method has the beneficial effects that by sequentially milling by virtue of the hammer mill and the raymond mill, the cellulose is thoroughly damaged, and the starch, the impurities, SO2 and the like are thoroughly removed, so that the transparency of the konjac micro powder is substantially increased and can reach above 90%.

Description

The preparation method of high transparency purifying konjaku micropowder
Technical field
The invention belongs to field of food preparation, be specifically related to a kind of preparation method of high transparency purifying konjaku micropowder.
Background technology
Konjaku is Araeceae herbaceos perennial, extensively be distributed in Southwest Mountainous Areas, traditional food and the resource medicine of China, also be a kind of food of high dietary-fiber low in calories, because being rich in and be uniquely provide the food of glucomannans (a kind of water-soluble fibre) and have very high health care and medical value, demand is greater than output in world markets at present.
The main functional component konjaku glucomannan of konjaku is the macromolecule polysaccharide be polymerized with glycosidic bond by glucose and mannose, there is unique rheological property and excellent health care, important food additives and healthy food material are become, meanwhile, in medicine, chemical industry, environmental protection, oil drilling etc., also important use is had.But konjaku glucomannan is present in konjak corm idioblas with state of aggregation form, its chemical composition is more complicated, still containing a small amount of starch, insoluble fibre etc. in the konjaku flour of purifying, cause the transparency of konjaku flour solution influenced, also the product that use konjaku flour makes is deteriorated as the food such as beverage, jelly transparency, has a strong impact on the exterior of commodity of this based food.And high grade of transparency konjaku flour also has value added applications in fields such as medicine, cosmetics.Therefore, the technology of production high grade of transparency konjaku flour is also by vast konjaku flour manufacturing enterprise is badly in need of.
The preparation method of existing high grade of transparency konjaku flour carries out soaking the transparency improving konjaku with alcohol after mainly adopting grinder to grind, but even if through grinding repeatedly and repeatedly alcohol-pickled after, the transparency of konjaku flour only can reach 70%.
Summary of the invention
The object of the invention is the preparation method improving a kind of high transparency purifying konjaku micropowder, after the method is successively ground by hammer slice type grinder and Raymond mill, then soak with alcohol, the transparency of konjaku flour can reach more than 90%.
In order to reach above-mentioned technique effect, the present invention takes following technical scheme:
A preparation method for high transparency purifying konjaku micropowder, successively ground by hammer slice type grinder and Raymond mill by konjaku powder, then with alcohol-pickled twice, concrete steps is as follows:
Step one: konjaku powder removes the impurity of surface attachment, starch, fiber and moisture by hammer slice type grinder, then enters Raymond mill;
Step 2: konjaku powder is further removed impurity, starch, the fiber of surface attachment by Raymond mill and is finely ground to as konjaku micropowder first product;
Step 3: konjaku micropowder first product first time, with alcohol-pickled, fully dissolves rear centrifugal dehydration;
Step 4: the konjaku micropowder first product second time alcohol through step 3 carries out immersion contraction, centrifugal dehydration, then carries out vacuum drying.
Konjaku powder is as follows by technical indicator after hammer slice type grinder: in raw material for 100: this link total impurities (impure and starch and cellulose) removal amount is 6 ~ 8%; Moisture is≤8%; The transparency of raw material is about 55-60%, and after hammer slice type grinder, transparency reaches 70%.
Konjaku powder is as follows by technical indicator after Raymond mill: the raw material of an above link is 100: this link total impurities (impure and starch and cellulose) removal amount is 25 ~ 35%; Moisture is≤5%; Can 90% be reached by transparency after Raymond mill; Order number is below 120 orders.
Further technical scheme is: described konjaku micropowder first product first time is 20 ~ 40% by alcohol-pickled alcohol concentration, preferably: alcohol concentration is 30%.
Further technical scheme is: described konjaku micropowder first product is 4 ~ 10 times of konjaku micropowder first product for the first time with alcohol-pickled alcohol quality, preferably: be 6 times of konjaku micropowder first product for the first time with alcohol-pickled alcohol quality.
Further technical scheme is: described konjaku micropowder first product first time is 20 ~ 60min with the alcohol-pickled time, preferably: soak time is 30min.
Further technical scheme is: the alcohol concentration that described konjaku micropowder first product second time alcohol carries out soaking is 80 ~ 95%, preferably: alcohol concentration is 80%.
Further technical scheme is: described konjaku micropowder first product second time is 3 ~ 7 times of konjaku micropowder first product with alcohol-pickled alcohol quality, preferably: second time is 5 times of konjaku micropowder first product with alcohol-pickled alcohol quality.
Further technical scheme is: described konjaku micropowder first product second time is 30min ~ 90min with the alcohol-pickled time.
Further technical scheme is: the steam viscosity of described vacuum drying is 0.2pa.s; The atmospheric pressure of described vacuum drying is 0.06-0.09MPa.
The present invention compared with prior art, has following beneficial effect:
(1) the present invention is successively ground by hammer slice type grinder and Raymond mill, and cellulose thoroughly destroys, starch, impurity, SO 2deng thoroughly being removed, thus significantly improve the transparency of konjaku flour, the transparency of konjaku micropowder prepared by the present invention can reach more than 90%.
(2), after this method adopts hammer slice type grinder and Raymond mill to grind, transparency just can reach 90%, therefore can reduce follow-up treatment process, has saved production cost.
Detailed description of the invention
Below in conjunction with embodiments of the invention, the invention will be further elaborated, to make technical scheme of the present invention
Embodiment 1:
The method of testing of transparency: the distilled water or the deionized water that measure 100ml25 DEG C inject 250ml beaker, in burning, put into magnetic agitation rotor, then beaker is placed on the magnetic force heating stirrer of (25 ± 1) DEG C, adjusts position, open and stir, adjustment rotating speed is at 80-100r/min.Take 0.5000g testing sample with the balance that sensibility reciprocal is 0.1mg, slowly add in beaker.Common and purifying konjaku powder constant temperature limit continues stirring 2 hours, and common and purifying konjaku micropowder stirs 1 hour continuously, takes off sample, with glass bar, solution is stirred; Pour cuvette (noting that bubble can not be had) to be measured into;
Open visible spectrophotometer 721E power switch, make instrument preheating 20 minutes; Adjusting wavelength is 550nm, prepare the blank cuvette of 1cm, in cuvette, inject distilled water, open sample chamber cap, the cuvette injecting distilled water is put into colorimetric shelf first light path, testing sample is put into second or the 3rd light path, build sample chamber cap, select transmittance modes, adjust 100% transmittance and 0% transmittance, namely pushed away by detected solution or draw in light path, be the light transmittance of sample shown by display product;
The preparation method of high transparency konjaku micropowder, comprises the following steps:
Step one: konjaku powder removes the impurity of surface attachment, starch, fiber and moisture by hammer slice type grinder, then enters Raymond mill; Konjaku powder is as follows by technical indicator after hammer slice type grinder: in raw material for 100: this link total impurities (impure and starch and cellulose) removal amount is 6 ~ 8%; Moisture is≤8%; The transparency of raw material is about 55-60%, can reach 60-70% by transparency is the highest after hammer slice type grinder; Order number is distributed as 50-120 order and is about 85-90%, is about 10-15% below 120 orders.
Step 2: konjaku powder is further removed impurity, starch, the fiber of surface attachment by Raymond mill and is finely ground to as konjaku micropowder first product; Konjaku powder is as follows by technical indicator after Raymond mill: the raw material of an above link is 100: this link total impurities (impure and starch and cellulose) removal amount is 25 ~ 35%; Moisture is≤5%; Can 90% be reached by transparency after Raymond mill; Order number is that 120 orders 100% pass through.
Step 3: konjaku micropowder first product first time, with alcohol-pickled, fully dissolves rear centrifugal dehydration; Alcohol concentration is 30%, and the quality of alcohol is 6 times of the first quality of konjaku micropowder, and soak time is 30min.
Step 4: the konjaku micropowder first product second time alcohol through step 3 carries out immersion contraction, centrifugal dehydration, then carries out vacuum drying.Second time is 80% by alcohol-pickled alcohol concentration, and the quality of alcohol is 5 times of the first quality of konjaku micropowder, and soak time is 30min.The steam viscosity of vacuum drying is 0.2pa.s; The atmospheric pressure of described vacuum drying is 0.06MPa.
After alcohol washes, the index of product is: the raw material of an above link is 100: this link total impurities (impure and starch and cellulose) removal amount is 5-10%; Moisture is≤6-10%; Transparency can reach 90-92%; Order number is that 120 orders 100% pass through.
Embodiment 2:
The preparation method of high transparency konjaku micropowder, comprises the following steps:
Step one: konjaku powder removes the impurity of surface attachment, starch, fiber and moisture by hammer slice type grinder, then enters Raymond mill; Konjaku powder is as follows by technical indicator after hammer slice type grinder: in raw material for 100: this link total impurities (impure and starch and cellulose) removal amount is 6 ~ 8%; Moisture is≤8%; The transparency of raw material is about 55-60%, can reach 60-70% by transparency is the highest after hammer slice type grinder; Order number is distributed as 50-120 order and is about 85-90%, is about 10-15% below 120 orders.。
Step 2: konjaku powder is further removed impurity, starch, the fiber of surface attachment by Raymond mill and is finely ground to as konjaku micropowder first product; Konjaku powder is as follows by technical indicator after Raymond mill: the raw material of an above link is 100: this link total impurities (impure and starch and cellulose) removal amount is 25 ~ 35%; Moisture is≤5%; Can 90% be reached by transparency after Raymond mill; Order number is that 120 orders 100% pass through.
Step 3: konjaku micropowder first product first time, with alcohol-pickled, fully dissolves rear centrifugal dehydration; Alcohol concentration is 30%, and the quality of alcohol is 4 times of the first quality of konjaku micropowder, and soak time is 60min.
Step 4: the konjaku micropowder first product second time alcohol through step 3 carries out immersion contraction, centrifugal dehydration, then carries out vacuum drying.Second time is 85% by alcohol-pickled alcohol concentration, and the quality of alcohol is 3 times of the first quality of konjaku micropowder, and soak time is 80min.The steam viscosity of vacuum drying is 0.2pa.s; The atmospheric pressure of described vacuum drying is 0.09MPa.
After alcohol washes, the index of product is: the raw material of an above link is 100: this link total impurities (impure and starch and cellulose) removal amount is 5-10%; Moisture is≤6-10%; Transparency can reach 90-92%; Order number is that 120 orders 100% pass through.
Although with reference to explanatory embodiment of the present invention, invention has been described here, above-described embodiment is only the present invention's preferably embodiment, embodiments of the present invention are not restricted to the described embodiments, should be appreciated that, those skilled in the art can design a lot of other amendment and embodiment, these amendments and embodiment will drop within spirit disclosed in the present application and spirit.

Claims (8)

1. a preparation method for high transparency purifying konjaku micropowder, is characterized in that: successively ground by hammer slice type grinder and Raymond mill by konjaku powder, then with alcohol-pickled twice, concrete steps are as follows:
Step one: konjaku powder removes the impurity of surface attachment, starch, fiber and moisture by hammer slice type grinder, then enters Raymond mill; Konjaku powder is as follows by technical indicator after hammer slice type grinder: in konjaku powder raw material for 100: this link total impurities removal amount is 6 ~ 8%; Moisture is≤8%;
Step 2: konjaku powder is further removed impurity, starch, the fiber of surface attachment by Raymond mill and is finely ground to as konjaku micropowder first product; Konjaku powder is as follows by technical indicator after Raymond mill: the raw material obtained in step one is for 100: this link total impurities removal amount is for 25 ~ 35%; Moisture is≤5%; Can 90% be reached by transparency after Raymond mill; Order number is below 120 orders;
Step 3: konjaku micropowder first product first time, with alcohol-pickled, fully dissolves rear centrifugal dehydration;
Step 4: the konjaku micropowder first product second time alcohol through step 3 carries out immersion contraction, centrifugal dehydration, then carries out vacuum drying.
2. the preparation method of high transparency purifying konjaku micropowder according to claim 1, is characterized in that: described konjaku micropowder first product first time is 20 ~ 40% by alcohol-pickled alcohol concentration.
3. the preparation method of high transparency purifying konjaku micropowder according to claim 1, is characterized in that: described konjaku micropowder first product is 4 ~ 10 times of konjaku micropowder first product for the first time with alcohol-pickled alcohol quality.
4. the preparation method of high transparency purifying konjaku micropowder according to claim 1, is characterized in that: described konjaku micropowder first product first time is 20 ~ 60min with the alcohol-pickled time.
5. the preparation method of high transparency purifying konjaku micropowder according to claim 1, is characterized in that: the alcohol concentration that described konjaku micropowder first product second time alcohol carries out soaking is 80 ~ 95%.
6. the preparation method of high transparency purifying konjaku micropowder according to claim 1, is characterized in that: described konjaku micropowder first product second time is 3 ~ 7 times of konjaku micropowder first product with alcohol-pickled alcohol quality.
7. the preparation method of high transparency purifying konjaku micropowder according to claim 1, is characterized in that: described konjaku micropowder first product second time is 30min-90min with the alcohol-pickled time.
8. the preparation method of high transparency purifying konjaku micropowder according to claim 1, is characterized in that: the steam viscosity of described vacuum drying is 0.2pa.s; The atmospheric pressure of described vacuum drying is 0.06-0.09MPa.
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Publication number Priority date Publication date Assignee Title
CN104605292A (en) * 2015-03-05 2015-05-13 四川森态源生物科技有限公司 Preparation process of sulfur-free and high-purity konjac micropowder
CN108618040A (en) * 2018-03-29 2018-10-09 重庆西大魔芋科技开发有限公司 A kind of preparation method of low viscosity konjaku flour
CN112273612A (en) * 2019-07-13 2021-01-29 湖北李泽园食品有限公司 Ultrasonic-assisted konjac purified powder processing method
CN111543625A (en) * 2020-03-23 2020-08-18 华中农业大学 Method for improving viscosity and stability of konjac sol

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CN102687835A (en) * 2012-05-29 2012-09-26 成都新星成明生物科技股份有限公司 Preparation method of low sulphur purified konjaku flour
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