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

A method for extracting xylan from wheat bran

A technology for wheat bran and xylan, which is applied in the field of xylan extraction from wheat bran, can solve the problems of easy destruction of xylan molecules, residual xylan impurities, unsatisfactory requirements, etc., and achieves high purity and stability Good performance, suitable for accurate measurement

Active Publication Date: 2019-08-27
北京挑战生物技术有限公司
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Nowadays, there are relatively mature techniques for extracting xylan from wheat bran, including high-temperature alkali method or ultrasonic-assisted extraction, etc., but high-temperature and ultrasonic methods are easy to destroy xylan molecules, and the produced xylan impurities remain a lot , cannot meet the needs

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A method for extracting xylan from wheat bran
  • A method for extracting xylan from wheat bran
  • A method for extracting xylan from wheat bran

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0065] Example 1: Extraction and Extraction Rate Determination of Wheat Bran Xylan from Beijing, the Place of Origin

[0066]Wheat bran pretreatment: take 200-300g of wheat bran originating in Beijing, grind them, and pass through a 60-mesh sieve. Wrap the sieved wheat bran with fine-meshed cotton cloth, add trypsin, tie it tightly with a rubber band, wash it in hot water several times and wring it dry. Put the destarched bran into a 5L beaker, add 0.2% (w / v) EDTA solution, stir for 1h, filter with fine-pored cotton cloth (4.1), wash with distilled water and wring dry. Dry at 105°C for 4 hours, crush and save.

[0067] Extraction of xylan: Weigh an appropriate amount of pretreated wheat bran in alkali solution, add hydrogen peroxide solution, the ratio of solid to liquid is 1:50, add 4M NaOH solution to adjust the pH to alkaline while stirring magnetically, heat and shake in a constant temperature water bath overnight . Then use 10% hydrochloric acid to adjust the pH value ...

Embodiment 2

[0068] Embodiment 2: the wheat bran xylan extraction of place of origin Jiangsu

[0069] Except that the wheat bran was sourced from Jiangsu, other parameters were the same as in Example 1, and the extraction rate was determined to be 31.07% according to the above formula.

Embodiment 3

[0070] Example 3: Extraction of wheat bran xylan from Jilin, the place of origin

[0071] Except that the wheat bran was from Jilin, other parameters were the same as in Example 1, and the extraction rate was determined to be 32.09% according to the above formula.

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 discloses a method for extracting xylan from wheat brans. The method comprises the following steps: crushing and sieving of wheat brans, de-starching pretreatment, alkali dissolution with sodium hydroxide, adding of hydrogen peroxide to remove lignin, neutralization, filtration, precipitation with organic solvent, and drying to prepare a xylan substrate product. The method provided by the invention is simple in process, mild in condition and good in extraction purity, has the extraction rate up to 30%, has extraction rate variation coefficients in the same batch and different batches not greater than 8%, has enzyme activity variation coefficients for measurement of xylanase substrate in feed not greater than 8%, has good repeatability, and has high application and promotion values.

Description

technical field [0001] The invention belongs to the technical field of plant xylan production, in particular to a method for extracting xylan from wheat bran. Background technique [0002] Xylan (xylan) is a heterogeneous polysaccharide existing in plant cell walls, accounting for about 15% to 35% of the dry weight of plant cells, and is the main component of plant hemicellulose. Most xylans are complex, highly branched heterogeneous polysaccharides with many different substituents, which are widely used. [0003] Recently, xylan is regarded as one of the most important renewable resources because it plays an important role in the new biopolymer materials and functional polymers obtained through chemical modification reactions. Xylan is also favored because of the unlimited application potential of the diversity of functional molecules. The most likely important applications of xylan and its derivatives are drug carriers, wound dressings, and additives in the paper industry...

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 Patents(China)
IPC IPC(8): C08B37/00
Inventor 严峰杨昕冉王海燕张广民
Owner 北京挑战生物技术有限公司
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