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Soya-dregs water soluble diet fiber preparation method using nano filtration and spray-drying method

A technology of soluble dietary fiber and dietary fiber, applied in the field of dietary fiber, can solve the problems of large product loss, difficult industrialization, complex influencing factors, etc., and achieve the effects of simplified purification operation, avoidance of waste and low price

Inactive Publication Date: 2009-06-17
SHENZHEN POLYTECHNIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The chemical method, that is, acid-base treatment, is widely used in the production of water-soluble modification of soybean dregs dietary fiber, but if acid-base treatment is used alone, the increase in water-soluble dietary fiber content is small, and the subsequent treatment is complicated and the product loss is large
Physical methods such as extrusion, high-temperature cooking, high-pressure homogenization, etc., can partially increase the content of water-soluble dietary fiber when used alone, but are greatly limited by equipment conditions
The biological method (including enzyme method and fermentation method) has mild conditions and good product quality, but there are problems such as complex influencing factors and difficult industrialization, which still have great limitations in industry

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] The following method is used to prepare insoluble dietary fiber.

[0038] Soybean dregs are dried and crushed until they pass through an 80-mesh sieve. Take 300g of soybean dregs powder, mix them with water at a material-to-liquid ratio of 1:15, pass through a colloid mill for 3 times, and adjust the precooking temperature of soybean dregs to 70°C and pH 8. , precooked for 30min, added lipase, so that the concentration of the enzyme solution in the system reached 80u.mL -1, keep stirring, and keep the reaction time for 2 hours; then adjust the temperature of the system to 80°C, add NaOH to make the concentration in the feed liquid reach 0.5%, keep the effect for 1 hour, and stir evenly during the period; centrifuge the feed liquid after the action, and centrifuge at 3500rpm After 30 min, the precipitate was collected. Resuspend the precipitate with pure water, centrifuge (3500rpm for 30min), collect the precipitate, repeat this step 3 times, dry the collected precipita...

Embodiment 2

[0042] The following method is used to prepare insoluble dietary fiber.

[0043] Soybean dregs are dried and crushed until they pass through an 80-mesh sieve. Take 300g of soybean dregs powder, mix them with water at a material-to-liquid ratio of 1:20, pass through a colloid mill for 3 times, and adjust the precooking temperature of soybean dregs to 80°C and pH to 9.5. , precooked for 30min, added lipase, so that the concentration of the enzyme solution in the system reached 100u.mL -1 , keep stirring, keep the reaction time for 3h and pH9.5; adjust the temperature of the system to 85°C, add NaOH to make the concentration in the feed liquid reach 0.75%, keep the action for 1h, and stir evenly during the period; after the action is over, use a three-legged centrifuge The machine centrifuges the feed liquid, centrifuges at 3500rpm for 30min, and collects the precipitate. Resuspend the precipitate with pure water, centrifuge (3500rpm for 30min), collect the precipitate, repeat t...

Embodiment 3

[0047] The following method is used to prepare insoluble dietary fiber.

[0048] Dry and pulverize the soybean dregs to pass through an 80-mesh sieve, take 300g of soybean dregs powder, add water and mix evenly according to the ratio of material to liquid 1:25, pass through the colloid mill for 3 times, adjust the precooking temperature of soybean dregs to 70°C and pH value 8. Precook for 30 minutes, add lipase to make the enzyme concentration in the system reach 80u.mL -1 , keep stirring, and keep the reaction time for 2 hours; then adjust the temperature of the system to 80°C, add NaOH to make the concentration in the feed liquid reach 0.5%, keep the effect for 1 hour, and stir evenly during the period; centrifuge the feed liquid after the action, 3500rpm, Centrifuge for 30 min to collect the precipitate. Resuspend the precipitate with pure water, centrifuge (3500rpm, centrifuge for 30min), collect the precipitate, repeat this step 3 times, dry the collected precipitate in ...

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Abstract

The invention relates to a meal fiber, provides a method for preparing soybean residue water-soluble meal fiber by combining nano-filtration and spray drying, which comprises: preparing insoluble soybean residue meal fiber; steaming, boiling and the insoluble soybean residue meal fiber, and modifying it by enzymatic hydrolysis; nano-filtering, spray drying, nano-filtering the supernatant and collecting trapped fluid; spray drying the trapped fluid and collecting the spray dried powder which is he soybean residue water-soluble meal fiber product. The product achieves the advantages of good quality, simple preparation process and convenient operation, is easy to be realized in industrial production.

Description

technical field [0001] The invention relates to a dietary fiber, in particular to a method for preparing soybean dregs water-soluble dietary fiber by adopting nanofiltration combined with a spray drying method. Background technique [0002] At present, dietary fiber has been recognized as the "seventh largest nutrient". According to soluble dietary fiber, it can be divided into water-soluble and insoluble dietary fiber. Both of them have specific physiological functions and health care effects in the human body, but the specific functions are different. The role of insoluble components is considered to be mainly to produce mechanical peristalsis in the intestinal tract, which can prevent obesity, constipation, intestinal cancer, etc. Water-soluble ingredients have a greater role in promoting physiological metabolism, such as preventing gallstones, eliminating harmful metal ions, preventing diabetes, lowering serum and liver cholesterol, inhibiting postprandial blood sugar r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23L1/30A23L1/308A23L1/28A23L1/20A23P1/06A23L33/22
Inventor 刘冬李艳周丽珍唐旭蔚孙海燕李世敏
Owner SHENZHEN POLYTECHNIC
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