Preparation technology of bean dreg micro-fibrillated cellulose
A preparation process and technology of cellulose, which is applied in the direction of using microorganism/enzyme cellulose treatment, fiber raw material treatment, pulping with inorganic alkali, etc., can solve the problems of waste gas and waste liquid, low cellulose yield, etc. Stable, simple preparation process, and the effect of reducing energy consumption
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
preparation example Construction
[0024] A preparation process of bean dregs microfibrillated cellulose, comprising the following steps:
[0025] Step 1, alkali treatment, can remove fat, protein, hemifiber and other alkali-soluble polysaccharides.
[0026] First, ultrafinely pulverize the bean dregs to 60-120 mesh, then add distilled water and mix to form a solution with a mass fraction of 5%-20% bean dregs, and adjust the pH to 8.0-10.0, and then stir it at 50°C-80°C for 40- 120min;
[0027] Step 2, xylanase treatment:
[0028] Washing with distilled water (the specific operation steps of washing: wash with distilled water in the filter, some oligosaccharides will dissolve into the alkali solution after alkali treatment, and this part of polysaccharides can be removed after washing), and the mass fraction is 5%- 20% bean dregs fiber solution, and adjusted to pH 7.0-10.0, at 40°C-75°C, add xylanase with enzyme activity of 0.05-2.0IU / g for 30-90min;
[0029] Step 3, microwave / high-speed stirring in conjunct...
Embodiment 1
[0039] A preparation of bean dregs microfibrillated cellulose, comprising the following steps:
[0040] Step 1: First, ultrafinely pulverize the bean dregs to 80 meshes, then add distilled water to mix to form a 6% bean dregs solution, adjust the pH to 8.5, and stir at 60°C for 60 minutes.
[0041] Step 2: After washing with distilled water, form a okara fiber solution with a mass fraction of 6%, and adjust the pH to 8.0, and add xylanase with an enzyme activity of 0.1IU / g for 60 minutes at 55°C; the added xylanase The carbohydrase is an alkaline xylanase with molecular weight less than 30000D.
[0042] Step 3: Prepare the okara fiber solution with a mass fraction of 5%, process it in a microwave with an output power of 200w for 6 minutes, stir it in a mixer at a speed of about 15000rpm for 15 minutes, add distilled water to dilute the okara fiber slurry to a mass fraction of 0.8%, add cellulase buffer solution to dilute the pH to 4.5, and add 0.01% cellulase at a mass fracti...
Embodiment 2
[0048] A preparation of bean dregs microfibrillated cellulose, comprising the following steps:
[0049] Step 1: First, ultrafinely pulverize the bean dregs to 100 mesh, then add distilled water to mix to form a 15% bean dregs solution, adjust the pH to 9.0, and stir at 70°C for 40 minutes.
[0050] Step 2, after washing with distilled water, form a okara fiber solution with a mass fraction of 15%, and adjust the pH to 9.0, and add xylanase with an enzyme activity of 1.40IU / g for 35 minutes at 45°C;
[0051] The xylanase added above is an alkaline xylanase with a molecular weight less than 30000D.
[0052] Step 3: Prepare the okara fiber solution with a mass fraction of 10%, process it in a microwave with an output power of 500w for 5 minutes, stir in a mixer at a speed of about 25000rpm for 12.5min, add distilled water to dilute the okara fiber slurry to the mass fraction 1.5%, add cellulase buffer to dilute the pH to 5.0, and add 0.03% cellulase at 45°C for 100 minutes to obta...
PUM
| Property | Measurement | Unit |
|---|---|---|
| size | aaaaa | aaaaa |
| diameter | aaaaa | aaaaa |
| diameter | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More