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Method for efficiently preparing gracilaria sulfated polysaccharides

A technology for sulfated polysaccharide and Gracilaria, applied in the field of efficient preparation of Gracilaria sulfate polysaccharide, can solve the problems of low product quality, low efficiency of Gracilaria sulfate polysaccharide, etc., and achieves high product yield, high sulfate group content, Mild effect of extraction conditions

Active Publication Date: 2017-05-24
FUJIAN AGRI & FORESTRY UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention aims to overcome the problems of low efficiency and low product quality in the preparation of Gracilaria sulfate polysaccharides by traditional methods, and is of great significance for improving the processing and utilization level of Gracilaria and improving the product quality of sulfate ester polysaccharides

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] (1) Cleaning: Wash the Gracilaria repeatedly with clean water, wash away the sediment and impurities, and drain;

[0040] (2) Cutting: cut the washed Gracilaria into 5cm;

[0041] (3) Pre-drying: drying fresh Gracilaria to a moisture content of 55wt%;

[0042] (4) Superheated steam wall breaking: put the pre-dried Gracilaria in the expansion chamber of the superheated steam puffing machine, vacuumize the puffing chamber to an absolute pressure of 20Pa, and pass the temperature of 140°C into the puffing chamber after vacuuming. The superheated steam with a pressure of 2MPa is maintained for 120s, and the pressure is quickly released within 0.5s to get the broken Gracilaria;

[0043] (5) Ultra-low temperature ultrafine pulverization: use a cryogenic pulverizer with a working temperature of -196°C and a rotational speed of 7000r / min to conduct ultra-low temperature vitrification and ultrafine pulverization of broken Gracilaria to obtain a pulverized product with an averag...

Embodiment 2

[0052] (1) Cleaning: Wash the Gracilaria repeatedly with clean water, wash away the sediment and impurities, and drain;

[0053] (2) Cutting: cut the washed Gracilaria into 3cm;

[0054] (3) Pre-drying: drying fresh Gracilaria to a moisture content of 42wt%;

[0055] (4) Superheated steam wall breaking: put the pre-dried Gracilaria in the expansion chamber of the superheated steam puffing machine, evacuate the puffing chamber to an absolute pressure of 20Pa, and pass the temperature of 170°C into the puffing chamber after vacuuming. The superheated steam with a pressure of 3.5MPa is maintained for 80s, and the pressure is quickly released within 0.5s to get the broken Gracilaria;

[0056] (5) Ultra-low temperature ultra-fine grinding: use a cryogenic pulverizer with a working temperature of -140°C and a rotational speed of 6000r / min to conduct ultra-low temperature vitrification and ultra-fine grinding of broken Gracilaria to obtain a crushed product with an average particle si...

Embodiment 3

[0065] (1) Cleaning: Wash the Gracilaria repeatedly with clean water, wash away the sediment and impurities, and drain;

[0066] (2) Cutting: cut the washed Gracilaria into 5mm;

[0067] (3) Pre-drying: drying fresh Gracilaria to a moisture content of 35wt%;

[0068] (4) Superheated steam wall breaking: put the pre-dried Gracilaria in the expansion chamber of the superheated steam puffing machine, evacuate the expansion chamber to an absolute pressure of 20Pa, and pass the temperature of 200°C, The superheated steam with a pressure of 5MPa is maintained for 20s, and the pressure is quickly released within 0.5s to obtain the broken Gracilaria;

[0069] (5) Ultra-low temperature ultra-fine pulverization: use a cryogenic pulverizer with a working temperature of -80°C and a rotational speed of 5000r / min to conduct ultra-low temperature vitrification and ultra-fine pulverization of broken Gracilaria to obtain a pulverized product with an average particle size of 50 μm ;

[0070]...

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Abstract

The invention relates to a method for efficiently preparing gracilaria sulfated polysaccharides. The method takes fresh gracilaria as a raw material and comprises the following steps of: washing, cutting, pre-drying, breaking walls through superheated steam, carrying out ultra-low-temperature ultra-micro crushing, extracting with water, decompressing and filtering, carrying out alcohol precipitation, washing with water, freezing and drying, and crushing to prepare the gracilaria sulfated polysaccharides. The method provided by the invention has the advantages that cell walls are crushed sufficiently, extraction conditions are moderate, and concentration and drying temperatures are relatively low, so that the yield of the prepared gracilaria sulfated polysaccharides is high, the content of sulfate groups is relatively high and the color and luster are good. The method has an advanced and reasonable technology and is easy to popularize; and the predicated economic and social benefits are good.

Description

technical field [0001] The invention belongs to the field of food processing, and in particular relates to a method for efficiently preparing sulfated polysaccharides from Gracilaria. Background technique [0002] Gracilaria ( Gracilaria ) is a large-scale marine algae resource in my country, and it is planted in coastal provinces. In addition to being used as a food material, Gracilaria is also an important raw material for the production of additives—agar gum. Sulfate polysaccharide is an important physiologically active component of Gracilaria, which has the functions of clearing heat and detoxification, promoting dampness and digestion, and can be used to treat colds and constipation. It has been reported in the literature that the sulfated polysaccharide of Gracilaria has good effects in anti-protein non-enzymatic glycosylation, anti-oxidation, anti-tumor, etc., and its activity is related to the content of sulfate groups. [0003] At present, polysaccharide extracti...

Claims

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Application Information

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IPC IPC(8): C08B37/00
CPCC08B37/0003
Inventor 宋洪波马岁祥常满倩安凤平黄群王艺伟
Owner FUJIAN AGRI & FORESTRY UNIV
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