A kind of galanga polysaccharide and its preparation method and its application as an emulsifier to prepare slow-digesting emulsion

A technology of galangal and polysaccharides, which is applied in the direction of food ingredients as emulsifiers, application, polysaccharide/gum-containing food ingredients, etc., can solve the problems of limiting the application of galangal polysaccharides and low purity of crude polysaccharides, and achieve delay in lipid digestion. Effects of good stability and good lipid digestibility

Active Publication Date: 2021-12-31
SOUTH CHINA UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the research on galangal at home and abroad mainly focuses on the chemical components such as flavonoids and aromatic oils, and the pharmacological functions such as antibacterial, anti-tumor, and hypolipidemic; the research on galangal polysaccharides also focuses on the extraction process of galangal crude polysaccharides and its In terms of anti-oxidation and anti-tumor effects in vitro, and the material characteristics of galanga itself were not fully considered in the process of preparing galanga crude polysaccharides, resulting in low purity of the obtained crude polysaccharides, which limited the application of galanga polysaccharides in the food field

Method used

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  • A kind of galanga polysaccharide and its preparation method and its application as an emulsifier to prepare slow-digesting emulsion
  • A kind of galanga polysaccharide and its preparation method and its application as an emulsifier to prepare slow-digesting emulsion
  • A kind of galanga polysaccharide and its preparation method and its application as an emulsifier to prepare slow-digesting emulsion

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0079] A kind of method utilizing galanga polysaccharide as emulsifier to prepare slow-digestion emulsion, specifically comprises the steps:

[0080] (1) Grinding and sieving: Grinding dried galangal and passing it through a 40-mesh sieve to obtain galangal dry powder A1.

[0081] (2) ethanol thermal reflux to remove impurities: the galangal dry powder A1 obtained in step (1) is mixed with the ethanol solution and then the reflux extraction condition is: the concentration of the ethanol solution is 85% (v / v), and the concentration of the galangal dry powder A1 and the ethanol solution The ratio of solid to liquid is 1:8g / mL, the stirring rate is 200r / min, the extraction temperature is 75°C, the number of extractions is 2 times, and the time of each reflux extraction treatment is 0.5h. The centrifugation conditions after reflux extraction are: the centrifugal force is 4000g, and the centrifugation time is 15min. Discard the supernatant, dry the residue at 45°C, and dry for 3 h...

Embodiment 2

[0097] A kind of method utilizing galanga polysaccharide as emulsifier to prepare slow-digestion emulsion, specifically comprises the steps:

[0098] (1) Grinding and sieving: crush the dried galangal and pass it through a 40-mesh sieve to obtain dry galangal powder B1.

[0099] (2) ethanol thermal reflux to remove impurities: the galangal dry powder B1 obtained in step (1) is mixed with the ethanol solution, and the reflux extraction condition is: the concentration of the ethanol solution is 90% (v / v), and the concentration of the galangal dry powder B1 and the ethanol solution is The solid-liquid ratio was 1:9g / mL, the stirring rate was 300r / min, the extraction temperature was 80°C, the extraction times were 3 times, and the time for each reflux extraction treatment was 1h. The centrifugation conditions after reflux extraction are: the centrifugal force is 5000g, and the centrifugation time is 15min. Discard the supernatant, dry the residue at 50°C, and dry for 4 hours to o...

Embodiment 3

[0115] A kind of method utilizing galanga polysaccharide as emulsifier to prepare slow-digestion emulsion, specifically comprises the steps:

[0116] (1) Crushing and sieving: crush the dried galangal and pass through a 40-mesh sieve to obtain dry galangal powder C1.

[0117] (2) ethanol thermal reflux to remove impurities: the galangal dry powder C1 obtained in step (1) is mixed with the ethanol solution and the reflux extraction condition is: the concentration of the ethanol solution is 95% (v / v), and the concentration of the galangal dry powder C1 and the ethanol solution is The ratio of solid to liquid was 1:10g / mL, the stirring rate was 400r / min, the extraction temperature was 85°C, the number of extractions was 4 times, and the time for each reflux extraction treatment was 1.5h. The centrifugation conditions after reflux extraction are: the centrifugal force is 6000g, and the centrifugation time is 15min. Discard the supernatant, dry the residue at a temperature of 55°C...

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Abstract

The invention discloses a galanga polysaccharide, a preparation method thereof and the application as an emulsifier to prepare slow-digestion emulsion. The method includes: crushing and sieving, heat reflux of ethanol to remove impurities, enzymatic starch removal, ultrasonic treatment, centrifugal separation, concentration under reduced pressure, ethanol precipitation, redissolution by adding water, secondary concentration under reduced pressure, protein removal by enzymatic method, macroporous The galanga polysaccharide was obtained by resin adsorption, three times of vacuum concentration, and freeze-drying. The galangal polysaccharide is dispersed in water to obtain a water phase; the corn oil is mixed with the water phase, emulsified by shearing, and homogenized to obtain an emulsion. The total sugar content of the galangal polysaccharide is >70%, and the molecular weight is 4×10 4 -1×10 5 Da, composed of seven monosaccharides: mannose, rhamnose, glucuronic acid, galacturonic acid, glucose, galactose and arabinose, the proportion of galacturonic acid > 10%, and the proportion of galactose > 38% %, arabinose accounts for more than 22%, and has good emulsifying properties. The emulsion can effectively delay lipid digestion.

Description

technical field [0001] The invention belongs to the field of deep processing of galangal ginger, and specifically relates to a galangal polysaccharide, a preparation method thereof, and an application as an emulsifier to prepare slow-digesting emulsion. Background technique [0002] With the improvement of people's living standards, high-fat diets lead to excess energy intake, making obesity an increasingly prominent health problem. According to the results of the "Lancet" survey, from 1975 to 2014, the global obesity rate of adult men increased from 3.2% to 10.8%, and the obesity rate of adult women increased from 6.4% to 14.9%. It is estimated that by 2025, the global adult male obesity rate will reach 18%, and the adult female obesity rate will exceed 21%. Obesity is the cause of many chronic diseases. Obesity and overweight can easily lead to diseases such as hypertension, diabetes and hyperuricemia. At present, diet control obesity mainly adopts the method of taking i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08B37/00A23L33/125A23L29/10
CPCC08B37/006C08B37/0003A23L33/125A23L29/10A23V2002/00A23V2200/30A23V2200/222A23V2250/50A23V2250/21A23V2300/14
Inventor 林恋竹耿春阳赵谋明
Owner SOUTH CHINA UNIV OF TECH
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