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Processing technology for extracting agar from Gelidium amansii

A processing technology and a technology of lily, applied in the field of agar extraction processing technology, can solve problems such as agar loss, environmental hazards, agar gel strength reduction, etc., and achieve the effects of not easy to return to yellow and weakening oxidation.

Inactive Publication Date: 2017-05-10
CHONGQING HONGQIAN AGRI DEV CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

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 by alkali hydrolysis; (2) A large amount of lye is used in the steps of alkali treatment, alkali washing, acid washing, washing and bleaching , acid solution, bleaching solution, easily produce a large amount of waste water, and environment has been caused great harm; (3) the sodium hypochlorite that bleaching step adopts can oxidize agar molecule to a certain extent, and the gel strength of agar is reduced; ( 4) The bleaching effect is not good enough, so the agar gum product is easy to turn yellow during storage, resulting in unsightly appearance of the product

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] (1) Place the pretreated Geliflower in a 6% KOH solution that is 26 times its weight, heat it to 60°C, and keep it at a constant temperature for 2 hours; wash the Alkali-treated Gemini with fresh water until the pH reaches 6.5~ 7. Collect lye and recycle it;

[0020] (2) Hang the washed to neutral agaricus into the treatment tank, add 10 times of water and start the agitator; bleach for the first time with the bleaching solution composed of 0.1% KCl solution and 0.5% HCl solution, the steps are: first Add 0.1% KCl solution that is 10 times the weight of the cauliflower, stir evenly, then add 0.5% HCl solution to pH 5, and stir for 20 minutes; add 0.05% sulfamate buffer by weight of the bleach solution, stir for 15 minutes, drain Bleaching solution, washed with water; c. Bleaching the second time with 0.01% potassium permanganate 10 times the weight of the cauliflower for 15 minutes; washing the cauliflower after acid and bleaching with fresh water until the pH reaches 6...

Embodiment 2

[0026] (1) Put the pretreated Geliflower in a 3% KOH solution that is 40 times the weight of the algal body, heat it to 75°C, and keep it at a constant temperature for 2 hours; wash the alkali-treated Geliflower with fresh water until the pH reaches 6.5 ~7, collect lye, recycle;

[0027] (2) Hang the washed to neutral agaricus into the treatment tank, add 15 times of water and start the agitator; bleach for the first time with the bleaching solution composed of 0.1% KCl solution and 0.5% HCl solution, the steps are: first Add 0.1% KCl solution 10 times the weight of Geliflower, stir evenly, then add 0.5% HCl solution until the pH is 6, and stir for 20 minutes; add 0.05% sulfamate buffer by weight of the bleach solution, stir for 15 minutes, drain Bleaching solution, washed with water; bleaching for the second time with 0.01% potassium permanganate 10 times the weight of the cauliflower for 15 minutes; washing the cauliflower after the acid and bleaching treatment with fresh wa...

Embodiment 3

[0033] (1) Put the pretreated Geliflower in 8% KOH solution which is 20 times the weight of the algal body, heat to 95°C, and keep the constant temperature for 2 hours; wash the alkali-treated Geliflower with fresh water until the pH reaches 6.5 ~7, collect lye, recycle;

[0034] (2) Hang the washed to neutral agaricus into the treatment tank, add 15 times of water and start the agitator; bleach for the first time with the bleaching solution composed of 0.1% KCl solution and 0.5% HCl solution, the steps are: first Add a 0.1% KCl solution 10 times the weight of the cauliflower, stir evenly, then add a 0.5% HCl solution until the pH is 4, and stir for 20 minutes; add 0.05% of the bleach solution weight sulfamate buffer, stir for 15 minutes, drain Bleaching solution, washed with water; bleaching for the second time with 0.01% potassium permanganate 10 times the weight of the cauliflower for 15 minutes; washing the cauliflower after the acid and bleaching treatment with fresh wate...

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PUM

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Abstract

The invention relates to a processing technology for extracting agar, and in particular to a processing technology for extracting agar from Gelidium amansii. The processing technology for extracting the agar from the Gelidium amansii comprises the following steps: using the Gelidium amansii as a raw material, carrying out the alkali treatment to the pre-treated Gelidium amansii, and washing; and treating the Gelidium amansii washed to be neutral, and then carrying out the first agar extraction, the second agar extraction and the recovery treatment, and finally fine-filtering to obtain a product. The process is green and environmental, and is capable of improving the extraction efficiency and jelly strength of the agar.

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 Geliflower. Background technique [0002] Agar gum, also known as agar, jelly powder, jelly essence, agar powder, cold weather. Agar has a unique property that is extremely useful in food industry applications. Its characteristics: it has physical and chemical properties such as coagulation, stability, and the ability to form complexes with some substances. It has the functions of detoxification and beauty, lowering blood pressure, lowering blood sugar, improving immunity, etc., and has a wide range of applications 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 ...

Claims

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Application Information

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IPC IPC(8): C08B37/12
Inventor 钟年伟
Owner CHONGQING HONGQIAN AGRI DEV CO LTD
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