Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for preparing xylooligosaccharide and cellulose by using crop straws

A technology of crop straw and xylooligosaccharides, which is applied in the fields of sugar production, fiber raw material processing, application, etc., can solve the problems of lack of scientific use methods and less utilization of crop straw, and achieve the problem of straw utilization and practicality Strong, simple production process

Inactive Publication Date: 2013-09-25
JIAHE BIOTECH
View PDF9 Cites 23 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the preparation of xylo-oligosaccharides from corncobs has established a mature industrial production route, while crop straws are rarely used due to the lack of scientific methods of use.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0015] Example 1: A method for preparing xylo-oligosaccharides and cellulose by utilizing crop straw, using rice straw as raw material, comprising the following steps:

[0016] (1) Pretreatment of straw: process 53.87g of rice straw into a length of 6cm, use hot water according to the solid-liquid mass ratio of 1:10, and water temperature 80°C, carry out countercurrent soaking for three times, and filter the residue for later use;

[0017] (2) Acid hydrolysis of straw: configure sulfuric acid solution with pH=2.5, add it to the pretreated straw according to the solid-liquid mass ratio=1:10, hydrolyze for 2 hours under the condition of 120°C, and suction filter after hydrolysis to obtain The filtrate is about 350ml for later use;

[0018] (3) decolorization and desalination of filtrate: the filtrate obtained by the method of (2), adjust pH=3.5 with calcium carbonate, under this condition, add powdery activated carbon by 2.5% of the solution volume to decolorize, under the condi...

Embodiment 2

[0021] Embodiment 2: a kind of method utilizing crop straw to prepare xylo-oligosaccharide and cellulose, using rice straw as raw material, comprises the following steps:

[0022] (1) Pretreatment of straw: process 70.69g of rice straw into a length of 10cm, use hot water according to the solid-liquid mass ratio of 1:8, and water temperature 75°C, carry out countercurrent soaking for three times, and filter the residue for later use;

[0023] (2) Acid hydrolysis of straw: configure sulfuric acid solution with pH=2, add it to the pretreated straw according to the solid-liquid mass ratio=1:8, hydrolyze at 120°C for 3 hours, and suction filter after hydrolysis to obtain The filtrate is about 320mi standby;

[0024] (3) filtrate decolorization and desalination: with the filtrate obtained by the method of (2), adjust pH=4 with calcium carbonate, under this condition, add powdery activated carbon by 3% of solution volume and carry out decolorization, under the condition of temperatu...

Embodiment 3

[0027] Embodiment 3: a kind of method utilizing crop stalks to prepare xylo-oligosaccharides and cellulose, using wheat stalks as raw material, comprises the following steps:

[0028] (1) Pretreatment of straw: process 60.34g of wheat straw into a length of 8cm, use hot water according to the solid-liquid mass ratio of 1:8, and water temperature 85°C, carry out countercurrent soaking for three times, and filter the residue for later use;

[0029] (2) Acid hydrolysis of straw: configure sulfuric acid solution with pH=3, add it to the pretreated straw according to the solid-liquid mass ratio=1:10, hydrolyze at 120°C for 3 hours, and suction filter after hydrolysis to obtain The filtrate is about 300ml for later use;

[0030] (3) Decolorization and desalination of the filtrate: the filtrate obtained in step (2) is adjusted to pH=3.5 with calcium carbonate, and under this condition, powdered activated carbon is added to decolorize by 2% of the volume of the solution, and treated a...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention belongs to the technical field of comprehensive utilization of subsidiary agricultural products, and relates to a method for preparing xylooligosaccharide and cellulose by using a crop straw acid hydrolysis method. The method for preparing the xylooligosaccharide by using the crop straws is used for preparing the xylooligosaccharide by four steps of pretreatment, acid hydrolysis, decoloration and desalination for hydrolysate and concentration drying; and a cellulose product can be obtained by performing alkaline treatment, stewing, pulping and drying on solid residues produced in a xylooligosaccharide preparation process. According to the method for preparing the xylooligosaccharide and the cellulose by using the crop straw, the crop straw is used as a raw material; the xylooligosaccharide and the cellulose are prepared by hot water pretreatment and acid hydrolysis by using the agricultural forest byproducts; the production technology is simple; the practicability is high; the economical value of the product is improved; the difficulty in utilization of the straw is well solved.

Description

technical field [0001] The invention belongs to the technical field of comprehensive utilization of agricultural and sideline products, and relates to a method for preparing xylooligosaccharides and cellulose by acid hydrolysis of crop straws. Background technique [0002] Crop straw is one of the most abundant renewable resources on the earth, and China is one of the countries with the most abundant straw resources in the world, which can produce more than 800 million tons of straw every year. There are mainly rice straw, wheat straw and corn straw in my country's rural areas, of which corn straw accounts for 36.7%, rice straw accounts for 27.5%, and wheat straw accounts for 15.2%. Every year, more than 95% of crop straw resources are converted into other forms through different utilization methods and are dissipated. In the past, they were often discarded as waste or burned as low-grade fuels. This not only wastes valuable biomass resources, but also seriously pollutes the...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C13K13/00D21C5/00
Inventor 任宪君张淑娟王春燕范自龙李强安良梅
Owner JIAHE BIOTECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com