WO2020098659A1 - 木糖母液杂质的去除方法 - Google Patents

木糖母液杂质的去除方法 Download PDF

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Publication number
WO2020098659A1
WO2020098659A1 PCT/CN2019/117716 CN2019117716W WO2020098659A1 WO 2020098659 A1 WO2020098659 A1 WO 2020098659A1 CN 2019117716 W CN2019117716 W CN 2019117716W WO 2020098659 A1 WO2020098659 A1 WO 2020098659A1
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mother liquor
xylose mother
xylose
dilution
filtered
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PCT/CN2019/117716
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English (en)
French (fr)
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廖承军
张金建
李勉
汪秀秀
郑毅
陈德水
程新平
安延龙
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浙江华康药业股份有限公司
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Publication of WO2020098659A1 publication Critical patent/WO2020098659A1/zh

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    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07H—SUGARS; DERIVATIVES THEREOF; NUCLEOSIDES; NUCLEOTIDES; NUCLEIC ACIDS
    • C07H1/00—Processes for the preparation of sugar derivatives
    • C07H1/06—Separation; Purification
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07H—SUGARS; DERIVATIVES THEREOF; NUCLEOSIDES; NUCLEOTIDES; NUCLEIC ACIDS
    • C07H3/00—Compounds containing only hydrogen atoms and saccharide radicals having only carbon, hydrogen, and oxygen atoms
    • C07H3/02—Monosaccharides

Definitions

  • the invention belongs to the technical field of chemical industry, and in particular relates to a method for removing impurities in xylose mother liquor.
  • the xylose mother liquor is the waste sugar liquor remaining after the production of xylose by chemical methods. Its main components are xylose, arabinose, glucose, and galactose. It also contains some impurities such as colloids and pigments. Generally, for every ton of crystal xylose produced, nearly one ton of xylose mother liquor is obtained. How to effectively separate xylose, arabinose, glucose, galactose and other components in the xylose mother liquor and effectively remove the colloidal pigment impurities in the xylose mother liquor has become a challenge and an opportunity for the development of the xylose industry. If the active ingredients in the xylose mother liquor are extracted to remove impurities, the utilization value of the xylose mother liquor will be greatly improved, turning waste into treasure and creating benefits.
  • Patent Publication No. CN101705253A discloses a processing method of xylose mother liquor, which uses xylose mother liquor as a raw material, prepares alcohol by fermentation of glucose with alcohol yeast, and then ferment xylose of xylose mother liquor by using xylitol yeast strain Method for preparing xylitol.
  • the main disadvantages of this method are: (1) yeast strains for fermentation are expensive, the investment cost is large, and the return rate is small; (2) the fermentation process conditions are harsh and the fermentation efficiency is low.
  • CN102580611A a method for processing xylose mother liquor is disclosed, which uses a variety of monosaccharide molecules in the xylose mother liquor to react with C 12-14 alkyl glycidyl ether to generate xylose mother liquor- C12-14 acyl hydroxyl Propyl ether surfactant.
  • the main disadvantages of this method are: (1) The use of C 12-14 alkyl glycidyl ether chemical reagent is expensive; (2) The water, steam and energy consumption in the production process are high, and the investment cost is high.
  • the technical problem to be solved by the present invention is to provide a method for removing impurities in the xylose mother liquor, which can effectively remove the colloidal impurities in the xylose mother liquor, so that the xylose mother liquor can smoothly pass through the chromatographic separation device to obtain high purity xylose , Reuse the xylose mother liquor to improve the utilization value of the xylose mother liquor.
  • the present invention is achieved in this way, and provides a method for removing impurities in xylose mother liquor, which includes the following steps:
  • Step 1 Make xylose mother liquor into 50% to 55% xylose mother liquor dilution
  • Step 2 Add soluble polysaccharide monooxygenase (LPMO) 0.1% ⁇ 0.5% (weight ratio) and 5mmol / L ⁇ 15mmol / L copper ethylenediamine solution to the xylose mother liquor dilution, and dilute the xylose mother liquor The liquid is heated and kept warm;
  • LPMO soluble polysaccharide monooxygenase
  • Step three add calcium hydroxide with a concentration of 7 ⁇ ⁇ 9 ⁇ to the xylose mother liquor dilution, and stir, then pass CO 2 gas into the xylose mother liquor dilution to make its pH value 6.6 ⁇ 7.0;
  • Step 4 Heat and dilute the xylose mother liquor dilute solution at 50 °C ⁇ 55 °C, let stand 15min ⁇ 60min;
  • Step five The xylose mother liquor dilution solution is filtered by suction filter cake, and then the obtained filtrate is filtered through the filter membrane to obtain the xylose mother liquor filtered by the filter membrane;
  • Step 6 The xylose mother liquor filtered by the filter membrane is then passed through a chromatographic separation device to obtain an xylose mother liquor extract, and the process of removing impurities in the xylose mother liquor is completed.
  • the xylose mother liquor is the xylose mother liquor produced in the xylose production process
  • the method for preparing the xylose mother liquor dilution solution is: directly adding purified water to the xylose mother liquor for dilution And stirring treatment.
  • step two the heating temperature of the xylose mother liquor dilution is 50 ° C to 55 ° C, and the heat preservation time is 1.0h to 3.0h.
  • step three the pH value of calcium hydroxide in the xylose mother liquor dilution is 8.8 to 9.2, the added CO 2 gas is 99% high purity gas, and the flow rate of the CO 2 gas is 2L / min .
  • step five the filter cake filtration rate is greater than 80 mL / min, and the filter membrane filtration rate is greater than 70 mL / min.
  • the method for removing impurities in the xylose mother liquor of the present invention uses the xylose mother liquor produced in the xylose production process as a raw material, by using a soluble polysaccharide monooxygenase (LPMO) and copper ethylenediamine solution, Pre-treatment of the xylose mother liquor causes the viscosity of the xylose mother liquor to be greatly reduced, and then the carbon dioxide method is used to process the xylose mother liquor to adjust its pH to be more acidic, thereby removing colloidal impurities and purifying the xylose mother liquor to make the xylose mother liquor smooth Through the chromatographic separation device, high-purity xylose is obtained.
  • the method of the invention uses simple equipment, simple process flow, and easy control of process conditions. It has obvious effect of removing impurities in the xylose mother liquor, has high cleaning efficiency, and has no effect on product quality.
  • the principle of the method for removing impurities in the xylose mother liquor by the method of the present invention is: first, the soluble polysaccharide monooxygenase (LPMO) and copper ethylenediamine solution are used to degrade the high-molecular substance in the xylose mother liquor to make The viscosity decreases. Then, lime milk and carbon dioxide are used to generate a large amount of positively charged calcium carbonate precipitates for adsorption and removal of impurities such as colloids and pigments in the xylose mother liquor, so as to achieve the purpose of removing impurities in the xylose mother liquor.
  • LPMO soluble polysaccharide monooxygenase
  • copper ethylenediamine solution copper ethylenediamine solution
  • lime milk and carbon dioxide are used to generate a large amount of positively charged calcium carbonate precipitates for adsorption and removal of impurities such as colloids and pigments in the xylose mother liquor, so as to achieve the purpose of removing impurities
  • the calcium carbonate precipitates In addition to being positively charged, the calcium carbonate precipitates also have a large specific surface area, which is beneficial to adsorb negatively charged colloidal particles and agglomerate them together to settle down, thereby obtaining a high purity xylose mother liquor extract.
  • the clarity in the xylose mother liquor is basically unchanged.
  • the present invention uses soluble polysaccharide monooxygenase (LPMO) and copper ethylenediamine solution in combination with the carbonic acid method to achieve the purpose of removing impurities in the xylose mother liquor, reduce production costs, and improve the utilization rate of the xylose mother liquor.
  • LPMO soluble polysaccharide monooxygenase
  • copper ethylenediamine solution in combination with the carbonic acid method to achieve the purpose of removing impurities in the xylose mother liquor, reduce production costs, and improve the utilization rate of the xylose mother liquor.
  • the process is simple.
  • the invention uses xylose mother liquor produced by xylose as a raw material, so that resources are rationally utilized, resource utilization is maximized, environmental pollution is reduced, and a new development direction is found for the xylose industry.
  • the method of the present invention provides an effective method for the deep utilization of the xylose mother liquor.
  • the method of the present invention can remove xylose mother liquor impurities, so that the xylose mother liquor can smoothly pass through the chromatographic separation device, thereby obtaining high-purity xylose.
  • Step 1 The xylose mother liquor is prepared into a xylose mother liquor dilution with a concentration of 50% to 55%.
  • Step 2 Add soluble polysaccharide monooxygenase (LPMO) 0.1% ⁇ 0.5% (weight ratio) and 5mmol / L ⁇ 15mmol / L copper ethylenediamine solution to the xylose mother liquor dilution, and dilute the xylose mother liquor The liquid is heated and kept warm.
  • LPMO soluble polysaccharide monooxygenase
  • Step three add calcium hydroxide with a concentration of 7 ⁇ ⁇ 9 ⁇ to the xylose mother liquor dilution, and stir, then pass CO 2 gas into the xylose mother liquor dilution to make its pH value 6.6 ⁇ 7.0.
  • Step 4 Heat and dilute the xylose mother liquor dilute solution at 50 °C ⁇ 55 °C, let stand 15min ⁇ 60min.
  • Step 5 The xylose mother liquor dilution solution is filtered by suction with a filter cake, and then the obtained filtrate is filtered through a filter membrane to obtain a xylose mother liquor filtered by the filter membrane.
  • Step 6 The xylose mother liquor filtered by the filter membrane is then passed through a chromatographic separation device to obtain an xylose mother liquor extract, and the process of removing impurities in the xylose mother liquor is completed.
  • the xylose mother liquor is the xylose mother liquor produced in the xylose production process
  • the method for preparing the xylose mother liquor dilution solution is: directly adding purified water to the xylose mother liquor for dilution and stirring treatment .
  • step two the heating temperature of the xylose mother liquor diluent is 50 ° C to 55 ° C, and the heat preservation time is 1.0h to 3.0h.
  • step three the pH value of calcium hydroxide in the xylose mother liquor dilution is 8.8 to 9.2, the added CO 2 gas is 99% high purity gas, and the flow rate of CO 2 gas is 2 L / min.
  • step five the filter cake filtration rate is greater than 80 mL / min, and the filter membrane filtration rate is greater than 70 mL / min.
  • the first method for removing impurities in xylose mother liquor includes the following steps:
  • the xylose mother liquor dilution solution is then filtered by filter cake, the filter cake filtering speed reaches 80mL / min, and then the obtained filtrate is filtered through the filter membrane, and the filter membrane filtering speed reaches 70mL / min, to obtain the xylose filtered by the filter membrane Mother liquor.
  • the xylose mother liquor filtered by the filter membrane is passed through a chromatographic separation device to obtain an xylose mother liquor extract, and the process of removing impurities in the xylose mother liquor is completed.
  • the second method for removing impurities in xylose mother liquor includes the following steps:
  • the xylose mother liquor diluent is then filtered by filter cake, the filter cake filtering speed reaches 90mL / min, and then the obtained filtrate is filtered through the filter membrane, and the filter membrane filtering speed reaches 85mL / min to obtain the xylose filtered by the filter membrane Mother liquor.
  • the xylose mother liquor filtered by the filter membrane is passed through a chromatographic separation device to obtain an xylose mother liquor extract, and the process of removing impurities in the xylose mother liquor is completed.
  • the third method for removing impurities in xylose mother liquor includes the following steps:
  • the xylose mother liquor dilution solution is subjected to filter cake suction filtration, and the filter cake filtration speed reaches 85 mL / min, and then the obtained filtrate is filtered through a filter membrane, and the filter membrane filtration speed reaches 72 mL / min, to obtain xylose filtered by the filter membrane Mother liquor.
  • the xylose mother liquor filtered by the filter membrane is then passed through a chromatographic separation device to obtain an xylose mother liquor extract, and the process of removing impurities in the xylose mother liquor is completed.

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Abstract

本发明涉及一种木糖母液杂质的去除方法，以木糖生产过程产生的木糖母液为原料，通过使用溶解性多糖单加氧酶（LPMO）及铜乙二胺溶液，对木糖母液进行前期处理，使得木糖母液的粘度大大降低，然后再通过利用碳酸法处理木糖母液，调节其pH至偏酸性，从而除去胶体类杂质净化木糖母液，使得木糖母液顺利通过色谱分离装置，得到高纯度的木糖。本发明通过使用糖基水解复配酶与碳酸法结合使用，达到木糖母液中杂质去除的目的，降低生产成本，提高木糖母液的利用率，有效的去除木糖母液中的胶体类杂质，使得木糖母液顺利通过色谱分离装置，得到纯度较高的木糖，提高木糖母液利用价值。

Description

木糖母液杂质的去除方法 技术领域
本发明属于化工技术领域，具体涉及一种木糖母液杂质的去除方法。
 背景技术
木糖母液是利用化学法生产木糖后剩余的废糖液，其主要成分为木糖、阿拉伯糖、葡萄糖、半乳糖成分，同时还含有一些胶体、色素等杂质。一般地，每生产一吨晶体木糖得到将近一吨的木糖母液。如何有效的分离木糖母液中的木糖、阿拉伯糖、葡萄糖、半乳糖等成分，并有效去除木糖母液中的胶体色素类杂质，已经成为木糖行业发展的挑战和机遇。如果将木糖母液中的有效成分提取出来，去除杂质，将大大提高木糖母液的利用价值，变废为宝，创造效益。
现有技术中有各种利用木糖母液的技术。在专利公开号为CN101705253A中公开了一种木糖母液的处理方法，其以木糖母液为原料，通过酒精酵母利用葡萄糖发酵制备酒精，然后通过利用木糖醇酵母菌株发酵木糖母液的木糖制备木糖醇的方法。该方法的主要缺点：（1）发酵用的酵母菌株昂贵，投资成本较大，回报率小；（2）发酵的工艺条件比较苛刻，发酵效率较低。而在专利公开号为CN102580611A中公开了一种处理木糖母液的方法，利用木糖母液中多种单糖分子与C 12-14烷基缩水甘油醚反应生成木糖母液-C12-14酰羟丙基醚表面活性剂。该方法主要的缺点是：（1）使用C 12-14烷基缩水甘油醚化学试剂，价格昂贵；（2）生产过程中消耗的水、蒸汽、能耗较高，投资成本高。
技术问题
本发明所要解决的技术问题在于，提供一种木糖母液杂质的去除方法，可以有效的去除木糖母液中的胶体类杂质，使得木糖母液顺利通过色谱分离装置，得到纯度较高的木糖，对木糖母液进行再利用，提高木糖母液利用价值。
 技术解决方案
本发明是这样实现的，提供一种木糖母液杂质的去除方法，包括如下步骤：
步骤一、将木糖母液配制成浓度为50%~55%的木糖母液稀释液；
步骤二、向木糖母液稀释液中加入溶解性多糖单加氧酶（LPMO）0.1%~0.5%（重量比）及5mmol/L~15mmol/L铜乙二胺溶液，并对木糖母液稀释液进行加热和保温处理；
步骤三、再向木糖母液稀释液中加入浓度为7‰~9‰的氢氧化钙，并搅拌，然后向木糖母液稀释液中通入CO 2气体，使其pH值为6.6~7.0；
步骤四、将木糖母液稀释液加热并保温50℃~55℃，静置15min~60min；
步骤五、再将木糖母液稀释液进行滤饼抽滤，然后将得到的滤液经过滤膜过滤，得到滤膜过滤的木糖母液；
步骤六、再将滤膜过滤的木糖母液通过色谱分离装置后得到木糖母液提取液，完成木糖母液去除杂质过程。
进一步地，在步骤一中，所述木糖母液为木糖生产过程中产生的木糖母液，所述木糖母液稀释液的配制方法是：向所述木糖母液中直接加入纯净水进行稀释并搅拌处理。
进一步地，在步骤二中，所述木糖母液稀释液的加热温度为50℃~55℃，其保温时间为1.0h~3.0h。
进一步地，在步骤三中，在木糖母液稀释液中氢氧化钙后其pH值为8.8~9.2，加入的CO 2气体为99%高纯度气体，通入CO 2气体的流量为2L/min。
进一步地，在步骤五中，滤饼过滤速度大于80mL/min，滤膜过滤速度大于70mL/min。
 有益效果
与现有技术相比，本发明的木糖母液杂质的去除方法，以木糖生产过程产生的木糖母液为原料，通过使用溶解性多糖单加氧酶（LPMO）及铜乙二胺溶液，对木糖母液进行前期处理，使得木糖母液的粘度大大降低，然后再通过利用碳酸法处理木糖母液，调节其pH至偏酸性，从而除去胶体类杂质净化木糖母液，使得木糖母液顺利通过色谱分离装置，得到高纯度的木糖。本发明方法的使用的设备简单，工艺流程简单，工艺条件易控制，对木糖母液中杂质去除效果明显，清洁效率高，对产品的质量无影响。
本发明方法对木糖母液中杂质的去除的原理是：首先，利用溶解性多糖单加氧酶（LPMO）及铜乙二胺溶液，降解木糖母液中的高分子物质，使得木糖母液的粘度降低。然后，利用石灰乳和二氧化碳生成大量带正电荷的碳酸钙沉淀吸附去除木糖母液中的胶体、色素等杂质，从而达到去除木糖母液杂质的目的。生成的碳酸钙沉淀除带有正电荷外，还具有很大比表面积，这有利于吸附带负电的胶体颗粒并将其团聚在一起沉降下来，从而得到纯度较高的木糖母液提取液。采用本发明方法去除木糖母液中的胶体、色素等杂质后，木糖母液中的澄清度基本没有变化。
本发明还具有以下特点：
1、本发明通过使用溶解性多糖单加氧酶（LPMO）及铜乙二胺溶液与碳酸法结合使用，达到木糖母液中杂质去除的目的，降低生产成本，提高木糖母液的利用率，工艺流程简单。
2、本发明是通过使用木糖生产的木糖母液为原料，使得资源得到合理利用，实现资源利用最大价值化，减少环境污染，为木糖行业找到了新的发展方向。
3、本发明方法为木糖母液的深度利用提供了有效的方法。
4、本发明方法通过木糖母液杂质的清除，能够使得木糖母液顺利通过色谱分离装置，从而得到高纯度的木糖。
 附图说明
在此处键入附图说明描述段落。
 本发明的最佳实施方式
为了使本发明所要解决的技术问题、技术方案及有益效果更加清楚明白，以下结合实施例，对本发明进行进一步详细说明。应当理解，此处所描述的具体实施例仅仅用以解释本发明，并不用于限定本发明。
本发明木糖母液杂质的去除方法的较佳实施例，包括如下步骤：
步骤一、将木糖母液配制成浓度为50%~55%的木糖母液稀释液。
步骤二、向木糖母液稀释液中加入溶解性多糖单加氧酶（LPMO）0.1%~0.5%（重量比）及5mmol/L~15mmol/L铜乙二胺溶液，并对木糖母液稀释液进行加热和保温处理。
步骤三、再向木糖母液稀释液中加入浓度为7‰~9‰的氢氧化钙，并搅拌，然后向木糖母液稀释液中通入CO 2气体，使其pH值为6.6~7.0。
步骤四、将木糖母液稀释液加热并保温50℃~55℃，静置15min~60min。
步骤五、再将木糖母液稀释液进行滤饼抽滤，然后将得到的滤液经过滤膜过滤，得到滤膜过滤的木糖母液。
步骤六、再将滤膜过滤的木糖母液通过色谱分离装置后得到木糖母液提取液，完成木糖母液去除杂质过程。
在步骤一中，所述木糖母液为木糖生产过程中产生的木糖母液，所述木糖母液稀释液的配制方法是：向所述木糖母液中直接加入纯净水进行稀释并搅拌处理。
在步骤二中，所述木糖母液稀释液的加热温度为50℃~55℃，其保温时间为1.0h~3.0h。
在步骤三中，在木糖母液稀释液中氢氧化钙后其pH值为8.8~9.2，加入的CO 2气体为99%高纯度气体，通入CO 2气体的流量为2L/min。
在步骤五中，滤饼过滤速度大于80mL/min，滤膜过滤速度大于70mL/min。
 本发明的实施方式
下面结合具体实施例进一步说明本发明的方法。
实施例一。
第一种木糖母液杂质的去除方法，包括如下步骤：
A1、将218mL纯净水加入至782mL、浓度69%的木糖母液中并搅拌，得到浓度为55%的木糖母液稀释液。
A2、向木糖母液稀释液中加入溶解性多糖单加氧酶（LPMO）0.1%（重量比）及5mmol/L铜乙二胺溶液，给木糖母液稀释液加热至50℃，且保温3.0h。
A3、向木糖母液稀释液中加入9‰的氢氧化钙，进行搅拌处理，调节其pH值为9.2，然后通入99%高纯度的CO 2气体，通入气体流量2L/min，使木糖母液稀释液的pH达到7.0。
A4、将木糖母液稀释液加热并保温50℃，静置60min。
A5、再将木糖母液稀释液进行滤饼抽滤，滤饼过滤速度达到80mL/min，然后将得到的滤液经过滤膜过滤，滤膜过滤速度达到70mL/min，得到滤膜过滤的木糖母液。
A6、再将滤膜过滤的木糖母液通过色谱分离装置后得到木糖母液提取液，完成木糖母液去除杂质过程。
经测定，在该实施例最后得到的木糖母液提取液中木糖纯度达到95%，对木糖母液中杂质去除效果明显，清洁效率高，对产品的质量无影响，可以得到高纯度的木糖。
实施例二。
第二种木糖母液杂质的去除方法，包括如下步骤：
B1、将275mL纯净水加入至725mL、浓度69%的木糖母液中并搅拌，得到浓度为50%的木糖母液稀释液。
B2、向木糖母液稀释液中加入溶解性多糖单加氧酶（LPMO）0.3%（重量比）及10mmol/L铜乙二胺溶液，给木糖母液稀释液加热至55℃，且保温1.0h。
B3、向木糖母液稀释液中加入7‰的氢氧化钙，进行搅拌处理，调节其pH值为8.8，然后通入99%高纯度的CO 2气体，通入气体流量2L/min，使木糖母液稀释液的pH达到6.6。
B4、将木糖母液稀释液加热并保温55℃，静置15min。
B5、再将木糖母液稀释液进行滤饼抽滤，滤饼过滤速度达到90mL/min，然后将得到的滤液经过滤膜过滤，滤膜过滤速度达到85mL/min，得到滤膜过滤的木糖母液。
B6、再将滤膜过滤的木糖母液通过色谱分离装置后得到木糖母液提取液，完成木糖母液去除杂质过程。
经测定，在该实施例最后得到的木糖母液提取液中木糖纯度达到95.8%，对木糖母液中杂质去除效果明显，清洁效率高，对产品的质量无影响，可以得到高纯度的木糖。
实施例三。
第三种木糖母液杂质的去除方法，包括如下步骤：
C1、将232mL纯净水加入至768mL、浓度69%的木糖母液中并搅拌，得到浓度为53%的木糖母液稀释液。
C2、向木糖母液稀释液中加入溶解性多糖单加氧酶（LPMO）0.5%（重量比）及15mmol/L铜乙二胺溶液，给木糖母液稀释液加热至52℃，且保温2.0h。
C3、向木糖母液稀释液中加入8‰的氢氧化钙，进行搅拌处理，调节其pH值为9.0，然后通入99%高纯度的CO 2气体，通入气体流量2L/min，使木糖母液稀释液的pH达到6.8。
C4、将木糖母液稀释液加热并保温53℃，静置35min。
C5、再将木糖母液稀释液进行滤饼抽滤，滤饼过滤速度达到85mL/min，然后将得到的滤液经过滤膜过滤，滤膜过滤速度达到72mL/min，得到滤膜过滤的木糖母液。
C6、再将滤膜过滤的木糖母液通过色谱分离装置后得到木糖母液提取液，完成木糖母液去除杂质过程。
经测定，在该实施例最后得到的木糖母液提取液中木糖纯度达到95.4%，对木糖母液中杂质去除效果明显，清洁效率高，对产品的质量无影响，可以得到高纯度的木糖。
以上所述仅为本发明的较佳实施例而已，并不用以限制本发明，凡在本发明的精神和原则之内所作的任何修改、等同替换和改进等，均应包含在本发明的保护范围之内。
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在此处键入工业实用性描述段落。
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Claims (8)

  1. 一种木糖母液杂质的去除方法，其特征在于，包括如下步骤：
    步骤一、将木糖母液配制成浓度为50%~55%的木糖母液稀释液；
    步骤二、向木糖母液稀释液中加入溶解性多糖单加氧酶0.1%~0.5%（重量比）及5mmol/L~15mmol/L铜乙二胺溶液，并对木糖母液稀释液进行加热和保温处理；
    步骤三、再向木糖母液稀释液中加入浓度为7‰~9‰的氢氧化钙，并搅拌，然后向木糖母液稀释液中通入CO 2气体，使其pH值为6.6~7.0；
    步骤四、将木糖母液稀释液加热并保温50℃~55℃，静置15min~60min；
    步骤五、再将木糖母液稀释液进行滤饼抽滤，然后将得到的滤液经过滤膜过滤，得到滤膜过滤的木糖母液；
    步骤六、再将滤膜过滤的木糖母液通过色谱分离装置后得到木糖母液提取液，完成木糖母液去除杂质过程。
  2. 如权利要求1所述的木糖母液杂质的去除方法，其特征在于，在步骤一中，所述木糖母液为木糖生产过程中产生的木糖母液，所述木糖母液稀释液的配制方法是：向所述木糖母液中直接加入纯净水进行稀释并搅拌处理。
  3. 如权利要求1所述的木糖母液杂质的去除方法，其特征在于，在步骤二中，所述木糖母液稀释液的加热温度为50℃~55℃，其保温时间为1.0h~3.0h。
  4. 如权利要求1所述的木糖母液杂质的去除方法，其特征在于，在步骤三中，在木糖母液稀释液中氢氧化钙后其pH值为8.8~9.2，加入的CO 2气体为99%高纯度气体，通入CO 2气体的流量为2L/min。
  5. 如权利要求1所述的木糖母液杂质的去除方法，其特征在于，在步骤五中，滤饼过滤速度大于80mL/min，滤膜过滤速度大于70mL/min。
  6. 如权利要求1所述的木糖母液杂质的去除方法，其特征在于，包括如下步骤：
    A1、将218mL纯净水加入至782mL、浓度69%的木糖母液中并搅拌，得到浓度为55%的木糖母液稀释液；
    A2、向木糖母液稀释液中加入溶解性多糖单加氧酶0.1%（重量比）及5mmol/L铜乙二胺溶液，给木糖母液稀释液加热至50℃，且保温3.0h；
    A3、向木糖母液稀释液中加入9‰的氢氧化钙，进行搅拌处理，调节其pH值为9.2，然后通入99%高纯度的CO 2气体，通入气体流量2L/min，使木糖母液稀释液的pH达到7.0；
    A4、将木糖母液稀释液加热并保温50℃，静置60min；
    A5、再将木糖母液稀释液进行滤饼抽滤，滤饼过滤速度达到80mL/min，然后将得到的滤液经过滤膜过滤，滤膜过滤速度达到70mL/min，得到滤膜过滤的木糖母液；
    A6、再将滤膜过滤的木糖母液通过色谱分离装置后得到木糖母液提取液，完成木糖母液去除杂质过程。
  7. 如权利要求1所述的木糖母液杂质的去除方法，其特征在于，包括如下步骤：
    B1、将275mL纯净水加入至725mL、浓度69%的木糖母液中并搅拌，得到浓度为50%的木糖母液稀释液；
    B2、向木糖母液稀释液中加入溶解性多糖单加氧酶0.3%（重量比）及10mmol/L铜乙二胺溶液，给木糖母液稀释液加热至55℃，且保温1.0h；
    B3、向木糖母液稀释液中加入7‰的氢氧化钙，进行搅拌处理，调节其pH值为8.8，然后通入99%高纯度的CO 2气体，通入气体流量2L/min，使木糖母液稀释液的pH达到6.6；
    B4、将木糖母液稀释液加热并保温55℃，静置15min；
    B5、再将木糖母液稀释液进行滤饼抽滤，滤饼过滤速度达到90mL/min，然后将得到的滤液经过滤膜过滤，滤膜过滤速度达到85mL/min，得到滤膜过滤的木糖母液；
    B6、再将滤膜过滤的木糖母液通过色谱分离装置后得到木糖母液提取液，完成木糖母液去除杂质过程。
  8. 如权利要求1所述的木糖母液杂质的去除方法，其特征在于，包括如下步骤：
    C1、将232mL纯净水加入至768mL、浓度69%的木糖母液中并搅拌，得到浓度为53%的木糖母液稀释液；
    C2、向木糖母液稀释液中加入溶解性多糖单加氧酶0.5%（重量比）及15mmol/L铜乙二胺溶液，给木糖母液稀释液加热至52℃，且保温2.0h；
    C3、向木糖母液稀释液中加入8‰的氢氧化钙，进行搅拌处理，调节其pH值为9.0，然后通入99%高纯度的CO 2气体，通入气体流量2L/min，使木糖母液稀释液的pH达到6.8；
    C4、将木糖母液稀释液加热并保温53℃，静置35min；
    C5、再将木糖母液稀释液进行滤饼抽滤，滤饼过滤速度达到85mL/min，然后将得到的滤液经过滤膜过滤，滤膜过滤速度达到72mL/min，得到滤膜过滤的木糖母液；
    C6、再将滤膜过滤的木糖母液通过色谱分离装置后得到木糖母液提取液，完成木糖母液去除杂质过程。
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