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Process for extracting xylose and xylitol from a xylose mother liquor or a xylose digest

A technology for xylose hydrolyzate and xylose mother liquor, which is applied in the field of preparation of high-purity xylose and xylitol, can solve the problems of inability to crystallize and recover xylose, reduce the economic benefit of xylose production, etc. The effect of low cost and good adsorption and separation performance

Inactive Publication Date: 2005-11-23
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

Inventions made from specific types of materials called sorbents that selectively remove certain substances (xylem) from mixtures containing these compounds. These unique properties make them ideal candidates for use with various industries like food processing, pharmaceutical manufacturing, environmental remediation, etc., where they could be useful due their ability to effectively absorb different molecules while also being able to maintain its shape when exposed to heating temperatures above room temperature.

Problems solved by technology

This patented technical problem addressed in this patent relates to improving purity levels for producing high quality xylenes (xylopyrrol) from crude or refined sources containing these compounds due to their instability during storage over time.

Method used

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  • Process for extracting xylose and xylitol from a xylose mother liquor or a xylose digest
  • Process for extracting xylose and xylitol from a xylose mother liquor or a xylose digest
  • Process for extracting xylose and xylitol from a xylose mother liquor or a xylose digest

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Experimental program
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Embodiment 2

[0051] The feed liquid is xylose mother liquor, wherein the refractive concentration is about 63% (wherein glucose ~ 15%; xylose ~ 50%; galactose ~ 6%, arabinose ~ 22%). The refractive concentration is about 56% (glucose ~ 2%; xylose ~ 60%; galactose ~ 10%, arabinose ~ 26%), this mother liquor is added to the hydrogenation reactor, and 5% Raney nickel catalyst is added, After the hydrogen pressure in the reactor reaches 50 bar, heat to 125° C., keep the pressure, and stop the hydrogenation after reacting for 8 hours. The reducing sugar content is less than 0.1% as measured by the Bertrant method to obtain the xylitol mother liquor. Its refractive concentration is 55%, and its xylitol content is about 62%.

[0052] The operating conditions of the simulated moving bed are as follows: the separation temperature is 75°C, the system pressure is 1.0Mpa, the feed rate of the feed liquid is 1L / h, and the feed rate of the elution water is 2.5L / h, and the feed reaches equilibrium after ...

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Abstract

Disclosed is a process for extracting xylose and xylitol from a xylose mother liquor or a xylose digest, which comprises, using xylose hydrolysate or xylose mother liquid as the raw material, removing glucose through saccharomyces cerevisiae fermentation, then imitating moving bed, using water as eluent, completely separating xylose from foreign matter such as arabinose, thus obtaining component containing rich xylose.

Description

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Claims

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Application Information

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Owner JIANGNAN UNIV
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