Alkali liquor pretreatment method of carrageenan

Through high-pressure microjet wall-breaking and weak alkali solution treatment, combined with acid buffering and alcohol depositing technology, the problems of increased water solubility and reduced glue yield caused by strong alkali treatment are solved, and efficient carrageenan extraction and improvement Glue rate.

CN119161501APending Publication Date: 2024-12-20JIANGXI LEMON BIOTECHNOLOGY CO LTD +3
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Patent Information

Application Number
CN202411414481.0
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-10-11
Publication Date
2024-12-20

AI Technical Summary

Technical Problem

The use of strong alkali in the existing alkali pretreatment methods leads to an increase in water solubility of carrageenan, a decrease in the rate of gel yield, and a long treatment time and a large loss of colloids.

Method used

The high-pressure microjet wall breaking technology combined with the alkali treatment process of weak alkali solution, and the wall breaking of the stone cauliflower is performed by high-pressure microjet, and then the extraction solution is pretreated with weak alkali solution and neutralized to neutral through acid buffer. Finally, alcohol solvent and nanosilica sol were added for precipitation and drying to extract carrageenan.

Benefits of technology

The gelling yield and extraction efficiency of carrageenan is improved, the water solubility is reduced, the treatment time is shortened, and the precipitation rate and yield of carrageenan is significantly improved through alcohol precipitation and flocculant.

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Abstract

The invention discloses an alkali liquor pretreatment method of carrageenan, which comprises the following steps: S1, crushing gelidium amansii by a medicinal material crusher, and then carrying out wall breaking treatment by high-pressure microjet; s2, filtering out crude fibers subjected to wall breaking treatment to obtain an extracting solution; s3, pretreating the extracting solution through a weak base solution; and S4, neutralizing the alkali-treated extracting solution to be neutral by using an acidic buffer solution, and extracting carrageenan. According to the method, the gelidium amansii is subjected to wall breaking treatment through high-pressure microjet, and components in gelidium amansii cells can be fully released through high-pressure microjet treatment, so that the utilization rate of the gelidium amansii is increased, and the gum yield is increased. Furthermore, the extracting solution is pretreated through the weak base solution, compared with strong base treatment in the prior art, the weak base treatment extracting solution can retain more lambda-type carrageenan, so that the water solubility of the carrageenan is reduced, and the gum yield is further improved.
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