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

A technology of soluble dietary fiber and dietary fiber, applied in the field of dietary fiber, can solve the problems of difficult quality control and long fermentation time, and achieve the effects of simplified purification operation, easier preservation, and avoidance of waste.

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 method has mild conditions, but as a biological fermentation method, the fermentation time is long (3-4 days), the quality is not easy to control, and there are certain problems in industrialization.
[0007] The Chinese patent application whose application number is 200610019590.8 has introduced a kind of grain dietary fiber production method with high water-soluble

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] The following method is used to prepare insoluble dietary fiber.

[0046] 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 is over, 3500× Centrifuge at g for 30 min to collect the precipitate. Resuspend the precipitate with pure water, centrifuge (3500×g for 30 min), collect the precipitate, repeat this step 3 times, dry the collected precipitat...

Embodiment 2

[0051] The following method is used to prepare insoluble dietary fiber.

[0052] 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 feed liquid was centrifuged by the machine, centrifuged at 3500×g for 30min, and the precipitate was collected. Resuspend the precipitate with pure water, centrifuge (3500×g for 30 min), collect the precipitat...

Embodiment 3

[0057] Prepare insoluble dietary fiber as follows.

[0058] 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 1:25, pass through a colloid mill for 3 times, and adjust the precooking temperature of soybean dregs to 90°C and pH 10. , precooked for 30min, added lipase, so that the concentration of the enzyme solution in the system reached 120u.mL -1 , keep stirring, and keep the reaction time for 4 hours; then adjust the temperature of the system to 90°C, add NaOH to make the concentration in the feed liquid reach 1.5%, keep the effect for 1 hour, and stir evenly during the period; centrifuge the feed liquid after the action is over, 3500× Centrifuge at g for 30 min to collect the precipitate. Resuspend the precipitate with pure water, centrifuge (3500×g for 30 min), collect the precipitate, repeat this step 3 times, dry the collected precipitate in an oven at 70°...

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PUM

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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 ultrafiltration and spray drying, which comprises: firstly, preparing insoluble soybean residue meal fiber; then, steaming, boiling and the insoluble soybean residue meal fiber, and modifying it by enzymatic hydrolysis; finally, performing ultrafiltration dialysis, concentrating and spray drying. The insoluble meal fiber crude product is prepared by degreasing and deproteinization treatment by using enzyme method and combined alkaline method; additionally, the insoluble meal fiber water-soluble modification is performed by high temperature steaming, boiling and combined cellulose hemicellulose enzymolysis. The combination of high temperature steaming, boiling and enzymolysis modification has the advantages of low enzyme amount, convenience, rapid and high conversion rate of soluble meal fiber; the spray drying performed directly after the ultrafiltration dialysis concentration can avoid the steps of vacuum condensation, alcohol precipitation and drying, saves time, saves process and reduces product cost largely.

Description

technical field [0001] The invention relates to a dietary fiber, in particular to a method for preparing high-purity soybean dregs water-soluble dietary fiber by means of ultrafiltration combined with spray drying. Background technique [0002] Dietary fiber has been recognized as the "seventh largest nutrient". Dietary fiber can be divided into water-soluble and insoluble dietary fiber according to solubility. Both 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 rise, and preventi...

Claims

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Application Information

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IPC IPC(8): A23L1/29A23L1/308A23L1/28A23L1/20A23L31/00A23L33/22
Inventor 刘冬周丽珍李艳唐旭蔚孙海燕李世敏
Owner SHENZHEN POLYTECHNIC
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