Method for preparing alginic acid and alginates from fresh sargassum as raw material

A technology of sargassum and alginic acid, which is applied in the field of preparation of alginic acid and alginate, which can solve the problems of poor stability, easy deterioration, and decreased viscosity, and achieve the effects of avoiding gelatin degradation, improving quality, and reducing impurities

Active Publication Date: 2016-08-10
SHANDONG JIEJING GROUP CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the sargassum in our country has not been fully utilized, and the dried sargassum is used as the raw material for the production of alginic acid and its salts, and it is easy to deteriorate during storage, mainly because the algae contain a large amount of inorganic salts, especially bromine salts , absorbs moisture during storage, which leads to the degradation of the colloid, which is manifested by a sharp drop in viscosity and poor stability

Method used

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  • Method for preparing alginic acid and alginates from fresh sargassum as raw material
  • Method for preparing alginic acid and alginates from fresh sargassum as raw material

Examples

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Embodiment 1

[0048] The method for preparing alginic acid with fresh sargassum as raw material, the method comprises the following steps:

[0049] (1) Cleaning: the raw material of fresh sargassum is washed with water to remove salt and impurities on the surface of fresh sargassum;

[0050] (2) Color fixation: chop up the washed fresh Sargassum algae, and add formaldehyde for "color fixation" treatment;

[0051] Cut the washed fresh sargassum into sections of about 6 cm, and soak the fresh sargassum with a formaldehyde solution of 0.9% at room temperature for 48 hours to fix the pigment protein. 4 times, release the soaking liquid after soaking;

[0052] (3) Digestion: The sargassum after the "fixation" treatment is digested with soda ash and transformed into liquid sodium alginate. During the digestion process, ultrasonic treatment is used;

[0053] Drain the algal bodies that have been treated with formaldehyde "fixation" and put them into a reaction kettle. Bond an ultrasonic transduc...

Embodiment 2

[0070] The method for preparing sodium alginate with fresh sargassum as raw material, the method comprises the following steps:

[0071] (1) Cleaning: the raw material of fresh sargassum is washed with water to remove salt and impurities on the surface of fresh sargassum;

[0072] (2) Color fixation: chop up the washed fresh Sargassum algae, and add formaldehyde for "color fixation" treatment;

[0073] Cut the cleaned fresh sargassum into 6cm sections, soak the fresh sargassum with a concentration of 0.9% formaldehyde solution at normal temperature for 48 hours, fix the pigment protein, and the volume of formaldehyde is the volume of fresh sargassum 4 times of that, release the soaking water after soaking;

[0074] (3) Digestion: Drain the algae treated with formaldehyde "color fixation" and put them into a reaction kettle, which has a built-in ultrasonic transducer vibrator, and the frequency range is controlled between 21-49 kHz; Soak in a sodium carbonate solution with a ...

Embodiment 3

[0081] The method for preparing sodium alginate with fresh sargassum as raw material, the method comprises the following steps:

[0082] (1) Cleaning: the raw material of fresh sargassum is washed with water to remove salt and impurities on the surface of fresh sargassum;

[0083] (2) Color fixation: chop up the washed fresh Sargassum algae, and add formaldehyde for "color fixation" treatment;

[0084]Cut the washed fresh sargassum into sections of about 6 cm, soak the fresh sargassum in a formaldehyde solution with a concentration of 0.8-1% at room temperature to fix the pigment protein, soak for 50 hours, and the volume of formaldehyde is the volume of fresh sargassum 4 times of that, release the soaking water after soaking;

[0085] (3) Digestion: Drain the algae treated with formaldehyde "fixation" and put them into a reactor. The outer wall of the reactor is bonded with an ultrasonic transducer vibrator, and the frequency range is controlled between 21 kHz and 49 kHz; S...

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Abstract

The invention belongs to the technical field of processing of algae and specifically relates to a method for preparing alginic acid and alginate by taking fresh sargassum as a raw material. The method for preparing alginic acid and alginate by taking fresh sargassum as a raw material comprises the following steps of: cleaning, color fixing, digestion, liquid-slag separation, acidification, obtainment of the alginic acid and reaction with a salt to obtain the alginate. The method disclosed by the invention has the beneficial effects that compared with the method for preparing alginic acid and salt thereof by taking traditional dried sargassum as a raw material, by adopting the method for preparing alginic acid and alginate by taking fresh sargassum as a raw material, disclosed by the invention, the problem of degradation of colloid due to the reduction in stability of the dried sargassum is avoided, the colloid component in the sargassum is retained to the greatest extent, and the product quality of the alginic acid and the salt thereof which are produced subsequently is further ensured.

Description

technical field [0001] The invention belongs to the technical field of algae processing, and in particular relates to a method for preparing alginic acid and alginate by using fresh sargassum as raw material. Background technique [0002] Sargassum is a wild large seaweed with the largest output in my country. The seaweed is rich in alginic acid, fucoidan and other substances, and is a good resource for comprehensive utilization of seaweed. It grows along the coast of our country, with Zhejiang, Fujian, Guangdong, Hainan and other coastal areas as the main production areas. There are 250 species of Sargassum, most of which are warm-water species, widely distributed in warm and warm waters, especially in the Indo-West Pacific and Australia. my country is one of the main producing areas of Sargassum, with 60 species. It is abundant in the coastal areas of Guangdong and Guangxi, especially Hainan Island, Zhou Island and Weizhou Island. It grows in rocky swamps in the low tid...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08B37/04
Inventor 申健林成彬王斌辛舟生
Owner SHANDONG JIEJING GROUP CORP
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