Processing technology for extracting agar from laver

A processing technology, seaweed technology, applied in the processing technology field of agar gum extraction, to achieve the effect of not easy to turn yellow

Active Publication Date: 2012-08-08
青岛聚大洋藻业集团有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention aims at the problems existing in the existing processing technology for extracting agar, and provides a processing technology for extracting agar from laver, which is green and environmentally friendly, improves the extraction rate of agar and the strength of agar gel, and produces The agar gel product is not easy to return to yellow during storage

Method used

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  • Processing technology for extracting agar from laver
  • Processing technology for extracting agar from laver

Examples

Experimental program
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Effect test

Embodiment 1

[0022] (1) Alkali treatment: place the pretreated laver in a 6% NaOH solution 26 times the weight of the algal body, heat to 60°C, and maintain a constant temperature for 2 hours;

[0023] (2) Soda washing: wash the laver treated with alkali with fresh water until the pH reaches 6.5-7, collect the lye, and recycle it;

[0024] (3) Acid and bleaching treatment: a. hang the laver washed to neutral into the treatment tank, add 10 times of water and open the agitator; b. carry out the second bleaching solution with 0.1% NaClO solution and 0.5% HCl solution One-time bleaching, the steps are: first add 0.1% NaClO solution 10 times the weight of seaweed, stir evenly, then add 0.5% HCl solution until the pH is 5, and stir for 20 minutes; c. Add 0.05% sulfamate by weight of the bleaching solution buffering agent, stirred for 15 minutes, drained the bleaching solution, and washed with water; c. carried out the second bleaching with 0.01% potassium permanganate 10 times the weight of lav...

Embodiment 2

[0031] (1) Alkali treatment: place the pretreated laver in a 3% NaOH solution that is 40 times the weight of the algae, heat to 75°C, and maintain a constant temperature for 2 hours;

[0032] (2) Soda washing: wash the laver treated with alkali with fresh water until the pH reaches 6.5-7, collect the lye, and recycle it;

[0033] (3) Acid and bleaching treatment: a. hang the laver washed to neutral into the treatment tank, add 15 times of water and open the agitator; b. carry out the second bleaching solution with 0.1% NaClO solution and 0.5% HCl solution One-time bleaching, the steps are: first add 0.1% NaClO solution 10 times the weight of seaweed, stir evenly, then add 0.5% HCl solution until the pH is 6, and stir for 20 minutes; c. Add 0.05% sulfamic acid salt of the bleaching solution buffering agent, stirred for 15 minutes, drained the bleaching solution, and washed with water; c. carried out the second bleaching with 0.01% potassium permanganate 10 times the weight of l...

Embodiment 3

[0040] (1) Alkali treatment: place the pretreated laver in an 8% NaOH solution 20 times the weight of the algal body, heat to 95°C, and maintain a constant temperature for 2 hours;

[0041] (2) Soda washing: wash the laver treated with alkali with fresh water until the pH reaches 6.5-7, collect the lye, and recycle it;

[0042](3) Acid and bleaching treatment: a. hang the laver washed to neutral into the treatment tank, add 15 times of water and open the agitator; b. carry out the second bleaching solution with 0.1% NaClO solution and 0.5% HCl solution One-time bleaching, the steps are: first add 0.1% NaClO solution 10 times the weight of seaweed, stir evenly, then add 0.5% HCl solution to pH 4, and stir for 20 minutes; c. Add 0.05% sulfamic acid salt of bleaching solution buffering agent, stirred for 15 minutes, drained the bleaching solution, and washed with water; c. carried out the second bleaching with 0.01% potassium permanganate 10 times the weight of laver, and the tim...

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Abstract

The invention provides a processing technology for extracting agar from laver, aiming at the problems existing in the conventional processing technology for extracting agar. The technology comprises the following six steps of: performing alkaline treatment; performing alkali rinsing, acid rinsing and bleaching treatment; performing acid rinsing, and washing and bleaching; extracting the agar; and finely filtering. The technology is environmentally-friendly; the extraction rate and the gel strength of the agar are improved; and a produced agar product is difficult to yellow during storage.

Description

technical field [0001] The invention relates to a processing technology for extracting agar, in particular, relates to a processing technology for extracting agar from laver. Background technique [0002] Agar gel, also known as agar, has the functions of detoxification and beautification, lowering blood pressure, lowering blood sugar, and improving immunity. It is widely used in food, medicine, agriculture, and scientific research. The market for agar has been tight for a long time, and the price has also been rising in recent years. At present, the process of producing agar in most domestic enterprises generally includes several steps such as alkali treatment, alkali washing, bleaching treatment, acid washing, washing and bleaching, extraction, and fine filtration. In the steps of the existing preparation process, there are often the following steps: Problems: (1) During the alkali treatment process, the treatment temperature is high, causing part of the agar to be lost b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08B37/12
Inventor 程跃谟吴仕鹏于云霞郭华玉孙梅赵明
Owner 青岛聚大洋藻业集团有限公司
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