A kind of preparation method of sulfated apple water-soluble dietary fiber

An apple dietary fiber and dietary fiber technology, applied in the field of food processing, can solve the problems of severe chlorosulfonic acid reaction, high pyridine toxicity, and difficulty in stirring, and achieve the effect of light color of the product, simple separation and purification, and easy dispersion

Active Publication Date: 2016-07-20
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Shaanxi University of Science and Technology Yang Yang et al. (Sulphate modification of water-soluble dietary fiber modified by apple extrusion, Food and Fermentation Industry, 2014, 40, 61-64) used sulfamic acid-pyridine method to sulfate apple dietary fiber to obtain sulfate The degree of substitution of the water-soluble dietary fiber of the apple is 1.29, but pyridine is highly toxic, volatile, and has a pungent smell. The reaction product is brown and viscous in the system and is not easy to stir
The Chinese patent with the publication number CN101412762A discloses a method for catalyzing the synthesis of Artemisia polysaccharide sulfate ester, using chlorosulfonic acid-N,N-dimethylformamide (DMF) method to sulfate Artemisia polysaccharide, with a substitution degree of 1.05 ~1.51, but chlorosulfonic acid reacts violently, reacts violently with water, a large amount of heat is released, and there is a danger of explosion. The esterification reaction needs to be carried out under low temperature and anhydrous conditions, and the operation is complicated and difficult to control
[0006] At present, there is no report on the sulfated apple dietary fiber by sulfamic acid-DMF method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] 1) Weigh a certain mass of 20 mesh apple dietary fiber, add distilled water with 20% of the mass of apple dietary fiber, stir evenly, let stand for 30min, then extrude and expand under the condition that the screw speed is 700r / min, after extrusion treatment, extrude The product was dried in an oven at 45°C, crushed and passed through a 20-mesh sieve to obtain extrusion-modified apple dietary fiber;

[0028] 2) Weigh a certain mass of 20-mesh extruded modified apple dietary fiber, add distilled water at a material-to-liquid ratio (g:mL) of 1:20, extract at 60°C for 1 hour, filter with suction and collect the filtrate. ℃, vacuum concentration at 0.07MPa to 1 / 5 volume, add 4 times the volume of 95% ethanol to precipitate, let it stand overnight, centrifuge and collect the precipitate, put the precipitate in an oven at 45°C to dry, and then get Apple SDF ;

[0029] 3) Accurately weigh 1.0 g of apple SDF, suspend it in 60 mL of DMF, add 2.0 g of sulfamic acid under stirrin...

Embodiment 2

[0031] 1) Weigh a certain mass of 20-mesh apple dietary fiber, add distilled water with 30% of the mass of apple dietary fiber, stir evenly, let stand for 60min, and then extrude and expand under the condition that the screw speed is 800r / min. After the extrusion treatment, the extruded The product was dried in an oven at 50°C, crushed and passed through a 60-mesh sieve to obtain extrusion-modified apple dietary fiber;

[0032] 2) Weigh a certain mass of 60 mesh extruded modified apple dietary fiber, add distilled water according to the ratio of solid to liquid (g:mL) of 1:25, extract at 70°C for 1.5h, filter with suction and collect the filtrate. 50°C, vacuum concentration to 1 / 5 volume under vacuum degree of 0.06MPa, add 4 times the volume of 95% ethanol to precipitate, let it stand overnight, centrifuge and collect the precipitate, put the precipitate in an oven at 50°C to dry, and then get the apple SDF;

[0033] 3) Accurately weigh 1.0 g of apple SDF, suspend it in 70 mL...

Embodiment 3

[0035] 1) Weigh a certain mass of 20 mesh apple dietary fiber, add distilled water with 40% of the mass of apple dietary fiber, stir evenly, let stand for 90min, and then extrude and expand under the condition that the screw speed is 900r / min, after extrusion treatment, extrude The product was dried in an oven at 55°C, crushed and passed through an 80-mesh sieve to obtain extrusion-modified apple dietary fiber;

[0036] 2) Weigh a certain mass of 80 mesh extruded modified apple dietary fiber, add distilled water at a solid-liquid ratio (g:mL) of 1:30, extract at 60°C for 2 hours, filter with suction and collect the filtrate. ℃, vacuum concentration at 0.08MPa to 1 / 6 volume, add 4 times the volume of 95% ethanol to precipitate, let it stand overnight, centrifuge and collect the precipitate, and dry the precipitate in an oven at 55°C to obtain Apple SDF ;

[0037] 3) Accurately weigh 1.0 g of apple SDF, suspend it in 80 mL of DMF, add 3.0 g of sulfamic acid under stirring condi...

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PUM

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Abstract

The invention discloses a preparation method of sulfated apple water-soluble dietary fiber. The preparation method comprises the following steps: (1) extruding and modifying apple dietary fiber, and then extracting the water-soluble dietary fiber by adopting water extraction and alcohol precipitation; and (2) fast and efficiently preparing the sulfated apple water-soluble dietary fiber under ultrasonic-assisted conditions by adopting sulfamic acid-N,N-dimethylformamide method. The preparation method has the advantages that the reaction conditions are mild, the operation is simple, the toxicity of a product is low and the like, the substitution degree of the prepared sulfated apple water-soluble dietary fiber is 0.23-0.97, and the sulfated apple water-soluble dietary fiber has excellent oxidization resistance and anti-tumor activity.

Description

technical field [0001] The invention belongs to the technical field of food processing, and in particular relates to a sulfated modification method of apple dietary fiber. Background technique [0002] my country is a big apple producing country, and a large amount of apple pomace will be produced in the process of fruit juice processing. According to reports, the dietary fiber in apple pomace is as high as 60-80%, which is a good raw material for preparing dietary fiber. Dietary fiber, as an important food component, is known as the "seventh nutrient", which has many physiological functions such as laxative, regulating and controlling blood sugar concentration, and lowering blood fat. According to solubility, dietary fiber can be divided into water-soluble dietary fiber (SDF) and water-insoluble dietary fiber (IDF). Among them, SDF has stronger physiological activity than IDF in preventing diabetes, cardiovascular disease and lowering cholesterol. [0003] SDF is a high-...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A23L33/21A23L5/30A23L33/22
Inventor 陈雪峰徐瑶刘宁邱尹琬
Owner SHAANXI UNIV OF SCI & TECH
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