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Process for producing agar under high temperature, super low concentration alkali and pressurizaation

A technology of ultra-low concentration and production method, applied in the field of agar processing and production, can solve the problems of large environmental pollution, high cost, large production site, etc., and achieve the effect of simple process, short cycle and low cost

Inactive Publication Date: 2007-01-24
杜道林 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The alkali concentration used in the normal temperature concentrated alkali method is above 35%, and the treatment is carried out at room temperature for 7 days. Its disadvantages are: large production site, long process production cycle, high cost, and great pollution to the environment
The concentration of alkali used in the medium-temperature concentrated alkali method is also above 35%, and it is treated for 16 hours under the condition of heating. , so its production cost still cannot be reduced, and the pollution to the environment has not been alleviated.
The high-temperature dilute alkali method uses low-concentration alkali to treat it under high-temperature conditions for 5 hours. Although this process has been greatly improved compared with the above two processes, the production cost has decreased and environmental pollution has also been reduced, but as the main quality of the product The gel strength, one of the indicators, hardly improves, which affects the product quality

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] Take 100 grams of dried Gracilaria japonica and soak it with 5% alkali solution, heat it to 90°C during the soaking process, pressurize it to 1.1 atmospheric pressure, filter it after soaking for 4 hours; The pH value reaches 6, and then bleached with sodium hypochlorite solution to obtain the neutral red Gracilaria; after washing the neutral Red Gracilaria, add additives to boil and extract the gel, and then dry the obtained jelly after dehydration by pressure filtration. Get agar.

Embodiment 2

[0013] Take 100 grams of dried Gracilaria japonica and soak it with 2% alkali solution, heat it to 80°C during the soaking process, pressurize it to 1.2 atmospheres, filter it after soaking for 3 hours; The pH value reaches 7, and then bleached with sodium hypochlorite solution to obtain the neutral red Gracilaria; after washing the neutral Red Gracilaria, add additives to boil and extract the gel, and then dry the obtained jelly after dehydration by pressure filtration. Get agar.

Embodiment 3

[0015] Take 100 grams of dried asparagus and soak them in 4% alkali solution, heat to 90°C during the soaking process, pressurize to 1.2 atmospheres, filter after soaking for 3 hours; wash the obtained alkaline asparagus with sulfuric acid The pH value reaches 7, and then bleached with sodium hypochlorite solution to obtain neutral red Gracilaria; after washing the neutral asparagus, adding additives, boiling and extracting the gel, and dehydrating by pressing, drying the obtained jelly. Get agar.

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PUM

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Abstract

The production process includes soaking, neutralization and bleaching, and gelatin extraction. The material is soaked in low concentration alkali solution at high temperature and pressurized condition, and through subsequent filtering, water washing, pH regulation with acid, bleaching with sodium hypochlorite, adding assistant, boiling to extract gelatin, press filtering to dewater and drying, agar is obtained. The production process is simple, low in cost and short in production period, and the agar product has good luster and high gel strength.

Description

technical field [0001] The invention relates to a production method for processing and producing agar by using rhodophyta plants as raw materials. Background technique [0002] At present, the methods for producing agar mainly include normal temperature concentrated alkali method, medium temperature concentrated alkali method and high temperature dilute alkali method. The alkali concentration used in the normal temperature concentrated alkali method is above 35%, and the treatment is carried out for 7 days at normal temperature. Its disadvantages are: large production site, long process production cycle, high cost, and large environmental pollution. The concentration of alkali used in the medium-temperature concentrated alkali method is also above 35%, and it is treated for 16 hours under the condition of heating. , so its production cost still cannot come down, and the pollution to the environment has not been alleviated to some extent either. The ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08B37/12
Inventor 杜道林庄志银庄聪明
Owner 杜道林