Method of rapidly digesting brown algae to extract algin

A technology for digesting brown algae and algin, which is applied in the field of rapidly digesting brown algae to extract high-viscosity algin, can solve the problems of long soaking and digesting time, prolonged production cycle and the like, and achieve the effects of shortening digestion time, shortening production time and improving product viscosity

Active Publication Date: 2018-07-27
SHANDONG JIEJING GROUP CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The object of the present invention is to provide a kind of brown algae that can be soaked and digested without soaking, aiming at the problems of long soaking and digestion time in the process of digesting brown algae to extract alginate, degradation of alginate caused by long digestion time, and further prolongation of production cycle caused by dense raw materials. Method for directly and rapidly digesting and extracting high-viscosity alginate

Method used

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  • Method of rapidly digesting brown algae to extract algin
  • Method of rapidly digesting brown algae to extract algin
  • Method of rapidly digesting brown algae to extract algin

Examples

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Embodiment 1

[0032] The alginate is extracted using the digestion process route of the present invention, and the raw material is Lessonia Trabeculata, which is produced in Chile and purchased from Runlin investment co., LTD.

[0033] (1) Grinding: Grinding 0.5 t of dry Rhizoma saponifera raw material (water content 15%) to the average sieve particle size d 50 = 1mm.

[0034] (2) Digestion: Add the crushed Leisong algae to the digestion pot, add 5m 3 (10 times the weight of dry algae) of hot water at 50±5°C, add 75kg (15% weight of dry algae) of sodium carbonate, stir continuously at 50°C, and digest for 0.5h to obtain a digestive juice.

[0035] The follow-up treatment of the obtained digestive juice refers to the existing process for the production of sodium alginate products, as follows: add tap water 100 times the weight of dry algae to the digestive juice, dilute it, and use an 18-mesh filter for coarse filtration; inject the filtrate into the floating tank for floating 3h, finely f...

Embodiment 2

[0037] The digestion process route of this technology is used to extract alginate, the others are the same as in Example 1, the difference is that the digestion temperature is 60°C, and finally 111kg of sodium alginate is obtained, with a yield of 22.2g / 100g brown algae and a viscosity of 1% sodium alginate aqueous solution It is 2250mPa·s.

Embodiment 3

[0039] The digestion process route of the present invention is used to extract alginate, the others are the same as in Example 2, except that the amount of alkali used is 40% of the weight of dry algae, and finally 123kg of sodium alginate is obtained, with a yield of 24.6g / 100g brown algae and 1% alginic acid The viscosity of the sodium aqueous solution is 2235 mPa·s.

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Abstract

The invention belongs to the technical field of algae chemical engineering and particularly relates to a method of rapidly digesting brown algae to extract algin. The method includes steps of: (1) crushing: crushing the brown algae until average sieve size d50 is not more than 1 mm; (2) digestion: performing alkaline digestion to the crushed brown algae to prepare digestion liquid; (3) production:processing the digestion liquid to obtain the algin. In the process, the brown algae is crushed until the d50 is not more than 1 mm; for production with large-scale use of dried brown algae as raw material, the process route including soaking, coating (dicing or crushing of wet algae) and digestion is shortened into a process route including crushing and digestion, so that digestion time is reduced to within 1.5 h, and yield of algin can reach 30-38 g/100g and yield coefficient of the algin can reach 70-90%, wherein viscosity of a 1% sodium alginate water solution can reach 1000 mPa*s.

Description

technical field [0001] The invention belongs to the technical field of seaweed chemical industry, in particular to a method for rapidly digesting brown algae and extracting high-viscosity alginate. Background technique [0002] Alginate is a general term for alginic acid and its salts. It is a plant polysaccharide that exists in the cell wall and intercellular matrix (mainly cell wall) of large multicellular brown algae plants. It has thickening, stabilizing, and emulsifying properties , Pseudoplasticity, water holding capacity, film-forming property and cohesiveness, are widely used in food, textile printing and dyeing, medical and health, daily chemical, biotechnology and wastewater treatment and other fields. Since high-viscosity alginate has better thickening stability, the application requirements are more extensive and the value is higher. Increasing the viscosity of alginate is one of the important ways for manufacturers to improve production efficiency. [0003] Tra...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08B37/04
CPCC08B37/0063
Inventor 王智慧丛威林成彬张燕王斌惠锋基王倩杨鹏波
Owner SHANDONG JIEJING GROUP CORP
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