Process for preparing food-grade xylose from corncobs

Abstract

The invention discloses a process for preparing food-grade xylose from corncobs, and particularly relates to the technical field of xylose manufacturing, and the process comprises the steps of raw material preparation, crushing, water immersion extraction, filtration, concentration, crystallization, filtration separation and drying. According to the method, the quality of the raw material is guaranteed to the maximum extent in the early stage of preparation work of the xylose raw material, solid particles and impurities can be effectively separated out in the corncob filtering process, a clear and transparent extracting solution is obtained, and a basis is provided for subsequent processing and utilization.

Description

Technical Field

[0001] The invention relates to the technical field of xylose production, and more specifically to a process for producing food-grade xylose from corn cobs. Background Art

[0002] Xylose is a component of pentosan, with the molecular formula C5H10O5. Free xylose has not been found in nature so far. Natural D-xylose exists in plants in the form of polysaccharides. It is found in large quantities in waste agricultural products such as corn cobs, cottonseed hulls, bagasse, rice husks, and other straws and seed husks. Corn cobs are used in large quantities for xylose production because of their high yield, high pentosan content, easy storage, relatively loose structure, and easy extraction. Xylose also exists in animal heparin, chondroitin, and glycoproteins. It is the connecting unit between sugar chains and serine (or threonine) in certain glycoproteins. The sweetness of xylose is 72% of that of sucrose, which is close to the sweetness of glucose, and its flavor is similar to that of glucose. It can improve the flavor and taste of sweets and inhibit odors. Xylose is not digested and absorbed by the human body after ingestion, so it does not increase blood sugar levels. It is a non-caloric Sweetener; well tolerated, excessive consumption will not cause bloating and diarrhea; nor is it used by oral microorganisms, and will not cause tooth decay; it has some of the physiological functions of dietary fiber, can lower serum cholesterol and prevent colon cancer, etc. Xylose is very compatible with food and can be added to food in any proportion as needed. When mixed with amino acids and heated, it is easy to produce Maillard reaction, which has the effect of enhancing flavor. Xylose can activate bifidobacteria in the human intestine and promote their growth. Bifidobacteria are beneficial bacteria, and the more of them, the more beneficial to human health. Eating xylose can improve the human microecological environment and enhance the body's immune ability. Xylose is a reducing sugar that can be hydrogenated and reduced to produce xylitol in the presence of a catalyst. Therefore, it is widely used as the raw material of xylitol, and glycosides and hydroxy acids are produced through chemical reactions. It can be used as a substitute for glycerol and edible organic acids. Summary of the invention

[0003] In order to overcome the above-mentioned defects of the prior art, an embodiment of the present invention provides a process for producing food-grade xylose from corncobs to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above object, the present invention provides the following technical solution: a process for preparing food-grade xylose from corn cobs, comprising the following steps:

[0005] S1: Raw material preparation,

[0006] Collect clean corn cobs and remove surface impurities.

[0007] S2: crush,

[0008] Crush the corn cobs into powder.

[0009] S3: water extraction,

[0010] Mix the crushed corncobs with an appropriate amount of water and perform water extraction to extract the xylose component. S4: Filter,

[0011] The extract is filtered through a filter to remove solid particles and impurities.

[0012] S5: Concentrated,

[0013] The filtered extract is concentrated to increase the xylose concentration.

[0014] S6: Crystallization,

[0015] Controlling the temperature and humidity of the concentrate promotes the formation of xylose crystals.

[0016] S7: Filtration separation,

[0017] The xylose crystals are separated from the remaining liquid, usually by filtration or centrifugation.

[0018] S8: Dry,

[0019] The separated xylose crystals are dried to remove residual moisture and obtain a dried xylose product.

[0020] Furthermore, in step S1, the specific raw material preparation work is to select mature corn, collect corn cobs after removing corn kernels, and wash the collected corn cobs to remove dust and impurities on the surface. This operation can be performed using clean water or detergent to ensure that the surface of the corn cobs is clean. The washed corn cobs need to be dried to remove excess moisture. The corn cobs can be placed in a well-ventilated place to dry, or air drying equipment can be used to accelerate drying.

[0021] Furthermore, in step S2, the specific crushing work is to convert the dried corn cobs into fine powder to provide suitable raw materials for the next step of processing. During the crushing process, the dried corn cobs are crushed by using a hammer mill, a drum mill, a ring roller mill, etc. During the crushing process, the corn cobs are gradually put into the crushing equipment to avoid overloading the equipment by putting too much at one time. At the same time, the speed and temperature of the crusher are controlled to prevent overheating or damage to the equipment. The corn cobs are crushed into finer powder for extracting xylose. After the crushing is completed, the powder particle size is controlled by using a screen to ensure uniform crushing. Secondly, a large amount of dust may be generated during the crushing process. By using a dust removal device, dust pollution is reduced. After the crushing is completed, the crushed corn cob powder is sieved as needed to remove coarse or incompletely crushed particles. Different mesh sizes of screens can be used during screening to ensure uniform particle size. The sieved powder is stored in a dry, sealed container to prevent moisture absorption or contamination. Through the above steps, the crushing of the corn cob can ensure the quality of the raw materials and provide a stable basis for the production of food-grade xylose.

[0022] Furthermore, in step S3, the specific water extraction is to place the crushed corn cob in an extraction tank, add an appropriate amount of water to cover the corn cob and leave a certain amount of surplus, the amount of water used is usually 2-3 times the amount of the corn cob to ensure sufficient infiltration, heat the extraction tank to a certain temperature, set between 60-80 degrees Celsius to promote the extraction process, stir the corn cob and water in the extraction tank to make them fully mixed, the extraction time can last from several hours to dozens of hours as needed to ensure sufficient extraction of the target substance, after the extraction is completed, pour the extracted liquid into a filter for separation, the filter can be filter paper, filter cloth or other filter materials, after filtration, collect the extracted liquid, including water and the extracted target substance, through the above steps, corn cob water extraction can obtain target substances such as xylose, and can be further processed and utilized as needed.

[0023] Furthermore, in step S4, the specific filtering is to prepare a filtering device, and a filter made of filter paper, filter cloth or other filter materials is usually used. Before pouring the extract into the filter, ensure that the extract has been fully cooled and reaches room temperature, place the filter on an appropriate filter stand or funnel, ensure that the filter is stable and not loose, and slowly pour the extract into the filter to avoid overflow or filter clogging too quickly. When pouring the extract, pay attention to controlling the pouring speed so that the liquid can pass through the filter evenly. During the filtration process, pay attention to whether there are any particles remaining or clogging on the filter. After the extract passes through the filter, collect the filtered liquid, which is a clear liquid after the solid particles and impurities are separated. After the filtration is completed, remove the filter, clean or treat the filter to remove residual solid particles. If the filter needs to be used again, ensure that it is cleaned and thoroughly dried. Through the above steps, the corn cob filtration process can effectively separate solid particles and impurities to obtain a clear and transparent extract, which provides a basis for subsequent processing and utilization.

[0024] Furthermore, in step S5, the concentration is specifically performed by pouring the extract into a special reduced-pressure evaporation device, using the reduced-pressure system inside the device to reduce the system pressure, and while reducing the pressure, heating the extract to evaporate the water therein, and continuing the heating and reduced-pressure treatment until the extract is concentrated to the desired concentration. After the concentration is completed, a more concentrated and pure extract can be obtained, which is convenient for subsequent storage, analysis and application.

[0025] Furthermore, in step S6, the specific crystallization is to slowly cool the concentrated extract to room temperature or a lower temperature. When the temperature drops to a certain level, some of the components dissolved in the extract will gradually become supersaturated and crystallize out. The crystallization process can be promoted by controlling the temperature and adding crystal seeds, and the desired crystalline product can be obtained. Secondly, a suitable solvent is added to the concentrated extract to reduce the solubility of certain components therein. By gradually adjusting the temperature, solvent concentration or solvent type, the target component is gradually supersaturated and crystallized, and the crystallized target product is separated and collected from the solution.

[0026] Further, in step S7, the specific filtration separation is as follows: first, the xylose crystals are formed in the solution, and the solution needs to be transferred to a container suitable for filtration. If there are other impurities in the solution, pretreatment such as filtration or precipitation can be considered, and a suitable filter medium such as filter paper, filter membrane or other filter material is selected to ensure that the xylose crystals can be effectively separated and their morphology is retained. The prepared filter medium is placed in a filtering device such as a funnel or a vacuum filter device, and the solution is slowly poured into the filter to allow the solution to pass through the filter medium, while the xylose crystals are left on the filter medium. Next, an appropriate amount of washing liquid such as pure water or an appropriate solution is used to wash the filtered xylose crystals to remove the residual solution and impurities, and the washed xylose crystals are placed in a well-ventilated environment, or appropriate drying equipment is used to dry them quickly to obtain clean xylose crystals.

[0027] Furthermore, in step S8, the specific drying is to place the xylose crystals in a well-ventilated environment and allow them to evaporate water naturally. This method takes time, but has little effect on the crystal structure and purity. At the same time, hot air or an oven can be used to dry the xylose crystals. At an appropriate temperature, hot air can quickly evaporate the water in the crystals and accelerate the drying process. It should be noted that the temperature should not be too high to avoid damaging the crystal structure. Secondly, under vacuum conditions, the ambient pressure is reduced so that water evaporates directly from the surface of the xylose crystals at low temperatures. This method is suitable for situations where high requirements are placed on the crystal structure and purity. Further, the user can first freeze the xylose crystals into a solid, and then directly sublimate the solid water into a gas under vacuum conditions to achieve drying. This method is suitable for situations where high requirements are placed on the crystal structure and morphology, but the equipment and operating costs are high. When performing the drying process, it is necessary to pay attention to controlling the temperature, humidity and drying time to avoid adverse effects on the xylose crystals. After drying, the xylose crystals can be stored in a dry and sealed container to prevent moisture absorption and contamination.

[0028] Technical effects and advantages of the present invention:

[0029] The corncob filtration process can effectively separate solid particles and impurities to obtain a clear and transparent extract, providing a basis for subsequent processing and utilization. DETAILED DESCRIPTION

[0030] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0031] A process for preparing food-grade xylose from corncobs according to an embodiment of the present invention comprises the following steps:

[0032] S1: Raw material preparation,

[0033] Collect clean corn cobs and remove surface impurities.

[0034] S2: crush,

[0035] Crush the corn cobs into powder.

[0036] S3: water extraction,

[0037] Mix the crushed corncobs with an appropriate amount of water and perform water extraction to extract the xylose component. S4: Filter,

[0038] The extract is filtered through a filter to remove solid particles and impurities.

[0039] S5: Concentrated,

[0040] The filtered extract is concentrated to increase the xylose concentration.

[0041] S6: Crystallization,

[0042] Controlling the temperature and humidity of the concentrate promotes the formation of xylose crystals.

[0043] S7: Filtration separation,

[0044] The xylose crystals are separated from the remaining liquid, usually by filtration or centrifugation.

[0045] S8: Dry,

[0046] The separated xylose crystals are dried to remove residual moisture and obtain a dried xylose product.

[0047] Furthermore, in step S1, the specific raw material preparation work is to select mature corn, collect the corn cobs after removing the corn kernels, and wash the collected corn cobs to remove dust and impurities on the surface. This operation can be performed using clean water or detergent to ensure that the surface of the corn cobs is clean. The washed corn cobs need to be dried to remove excess moisture. The corn cobs can be placed in a well-ventilated place to dry, or air drying equipment can be used to accelerate drying.

[0048] Furthermore, in step S2, the specific crushing work is to convert the dried corn cobs into fine powder to provide suitable raw materials for the next step of processing. During the crushing process, the dried corn cobs are crushed by using a hammer mill, a drum mill, a ring roller mill, etc. During the crushing process, the corn cobs are gradually put into the crushing equipment to avoid overloading the equipment by putting too much at one time. At the same time, the speed and temperature of the crusher are controlled to prevent overheating or damage to the equipment. The corn cobs are crushed into finer powder for extracting xylose. After the crushing is completed, the powder particle size is controlled by using a screen to ensure uniform crushing. Secondly, a large amount of dust may be generated during the crushing process. By using a dust removal device, dust pollution is reduced. After the crushing is completed, the crushed corn cob powder is sieved as needed to remove coarse or incompletely crushed particles. Different mesh sizes of screens can be used during screening to ensure uniform particle size. The sieved powder is stored in a dry, sealed container to prevent moisture absorption or contamination. Through the above steps, the crushing of the corn cob can ensure the quality of the raw materials and provide a stable basis for the production of food-grade xylose.

[0049] Furthermore, in step S3, the specific water extraction is to place the crushed corn cob in an extraction tank, add an appropriate amount of water to cover the corn cob and leave a certain amount of surplus, the amount of water used is usually 2-3 times the amount of the corn cob to ensure sufficient infiltration, heat the extraction tank to a certain temperature, set between 60-80 degrees Celsius to promote the extraction process, stir the corn cob and water in the extraction tank to make them fully mixed, the extraction time can last from several hours to dozens of hours as needed to ensure sufficient extraction of the target substance, after the extraction is completed, pour the extracted liquid into a filter for separation, the filter can be filter paper, filter cloth or other filter materials, after filtration, collect the extracted liquid, including water and the extracted target substance, through the above steps, corn cob water extraction can obtain target substances such as xylose, and can be further processed and utilized as needed.

[0050] Furthermore, in step S4, the specific filtering is to prepare a filtering device, and a filter made of filter paper, filter cloth or other filter materials is usually used. Before pouring the extract into the filter, ensure that the extract has been fully cooled and reaches room temperature, place the filter on an appropriate filter stand or funnel, ensure that the filter is stable and not loose, and slowly pour the extract into the filter to avoid overflow or filter clogging too quickly. When pouring the extract, pay attention to controlling the pouring speed so that the liquid can pass through the filter evenly. During the filtration process, pay attention to whether there are any particles remaining or clogging on the filter. After the extract passes through the filter, collect the filtered liquid, which is a clear liquid after the solid particles and impurities are separated. After the filtration is completed, remove the filter, clean or treat the filter to remove residual solid particles. If the filter needs to be used again, ensure that it is cleaned and thoroughly dried. Through the above steps, the corn cob filtration process can effectively separate solid particles and impurities to obtain a clear and transparent extract, which provides a basis for subsequent processing and utilization.

[0051] Furthermore, in step S5, the concentration is specifically performed by pouring the extract into a special reduced-pressure evaporation device, using the reduced-pressure system inside the device to reduce the system pressure, and while reducing the pressure, heating the extract to evaporate the water therein, and continuing the heating and reduced-pressure treatment until the extract is concentrated to the desired concentration. After the concentration is completed, a more concentrated and pure extract can be obtained, which is convenient for subsequent storage, analysis and application.

[0052] Furthermore, in step S6, the specific crystallization is to slowly cool the concentrated extract to room temperature or a lower temperature. When the temperature drops to a certain level, some of the components dissolved in the extract will gradually become supersaturated and crystallize out. The crystallization process can be promoted by controlling the temperature and adding crystal seeds, and the desired crystalline product can be obtained. Secondly, a suitable solvent is added to the concentrated extract to reduce the solubility of certain components therein. By gradually adjusting the temperature, solvent concentration or solvent type, the target component is gradually supersaturated and crystallized, and the crystallized target product is separated and collected from the solution.

[0053] Further, in step S7, the specific filtration separation is as follows: first, the xylose crystals are formed in the solution, and the solution needs to be transferred to a container suitable for filtration. If there are other impurities in the solution, pretreatment such as filtration or precipitation can be considered, and a suitable filter medium such as filter paper, filter membrane or other filter material is selected to ensure that the xylose crystals can be effectively separated and their morphology is retained. The prepared filter medium is placed in a filtering device such as a funnel or a vacuum filtration device, and the solution is slowly poured into the filter to allow the solution to pass through the filter medium, while the xylose crystals are left on the filter medium. Next, an appropriate amount of washing liquid such as pure water or an appropriate solution is used to wash the filtered xylose crystals to remove the residual solution and impurities, and the washed xylose crystals are placed in a well-ventilated environment, or appropriate drying equipment is used to dry them quickly to obtain clean xylose crystals.

[0054] Further, in step S8, the specific drying is to place the xylose crystals in a well-ventilated environment and allow them to evaporate water naturally. This method takes time, but has little effect on the crystal structure and purity. At the same time, hot air or an oven can be used to dry the xylose crystals. At an appropriate temperature, hot air can quickly evaporate the water in the crystals and accelerate the drying process. It should be noted that the temperature should not be too high to avoid damaging the crystal structure. Secondly, under vacuum conditions, the ambient pressure is reduced so that water evaporates directly from the surface of the xylose crystals at low temperatures. This method is suitable for situations where high requirements are placed on the crystal structure and purity. Further, the user can first freeze the xylose crystals into a solid, and then directly sublimate the solid water into a gas under vacuum conditions to achieve drying. This method is suitable for situations where high requirements are placed on the crystal structure and morphology, but the equipment and operating costs are high. When performing the drying process, it is necessary to pay attention to controlling the temperature, humidity and drying time to avoid adverse effects on the xylose crystals. After drying, the xylose crystals can be stored in a dry and sealed container to prevent moisture absorption and contamination.

[0055] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, which may refer to mechanical connection or electrical connection, or internal communication between two components, or direct connection. "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change;

[0056] Secondly: In the embodiments disclosed in the present invention, only the structures related to the embodiments disclosed in the present invention are involved, and other structures can refer to the general design. In the case of no conflict, the same embodiment and different embodiments of the present invention can be combined with each other;

[0057] Finally: The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A process for producing food-grade xylose from corncobs, characterized in that: Including the following steps: S1: Raw material preparation, Collect clean corn cobs and remove surface impurities. S2: crush, The corn cobs are crushed into powder. S3: water extraction, The crushed corn cobs are mixed with an appropriate amount of water and subjected to water extraction to extract the xylose component. S4: Filter, The extract is filtered through a filter to remove solid particles and impurities. S5: Concentrated, The filtered extract is concentrated to increase the xylose concentration. S6: Crystallization, Control the temperature and humidity of the concentrate to promote the formation of xylose crystals. S7: Filtration separation, The xylose crystals are separated from the remaining liquid, usually by filtration or centrifugation. S8: Dry, The separated xylose crystals are dried to remove residual moisture and obtain a dried xylose product.

2. A process for producing food-grade xylose from corncobs according to claim 1, characterized in that: In step S1, the specific raw material preparation work is to select mature corn, collect corn cobs after removing corn kernels, and wash the collected corn cobs to remove dust and impurities on the surface. This operation can be performed using clean water or detergent to ensure that the surface of the corn cobs is clean. The washed corn cobs need to be dried to remove excess moisture. The corn cobs can be placed in a well-ventilated place to dry, or air drying equipment can be used to accelerate drying.

3. The process for producing food-grade xylose from corncobs according to claim 1, characterized in that: In the step S2, the specific crushing work is to convert the dried corn cobs into fine powder to provide suitable raw materials for the next step of processing. During the crushing process, the dried corn cobs are crushed by using a hammer mill, a drum mill, a ring roller mill, etc. During the crushing process, the corn cobs are gradually put into the crushing equipment to avoid overloading the equipment by putting too much at one time. At the same time, the speed and temperature of the crusher are controlled to prevent overheating or damage to the equipment. The corn cobs are crushed into finer powder for extracting xylose. After the crushing is completed, the powder particle size is controlled by using a screen to ensure uniform crushing. Secondly, a large amount of dust may be generated during the crushing process. By using a dust removal device, dust pollution is reduced. After the crushing is completed, the crushed corn cob powder is sieved as needed to remove coarse or incompletely crushed particles. Different mesh sizes of screens can be used during screening to ensure uniform particle size. The sieved powder is stored in a dry, sealed container to prevent moisture absorption or contamination. Through the above steps, the crushing of the corn cobs can ensure the quality of the raw materials and provide a stable basis for the production of food-grade xylose.

4. The process for producing food-grade xylose from corncobs according to claim 1, characterized in that: In step S3, the specific water extraction is to place the crushed corn cob in an extraction tank, add an appropriate amount of water to cover the corn cob and leave a certain amount of surplus, the amount of water used is usually 2-3 times the amount of the corn cob to ensure sufficient infiltration, heat the extraction tank to a certain temperature, set between 60-80 degrees Celsius to promote the extraction process, stir the corn cob and water in the extraction tank to make them fully mixed, the extraction time can last from several hours to dozens of hours as needed to ensure sufficient extraction of the target substance, after the extraction is completed, pour the extracted liquid into a filter for separation, the filter can be filter paper, filter cloth or other filter materials, after filtration, collect the extracted liquid, including water and the extracted target substance, through the above steps, corn cob water extraction can obtain target substances such as xylose, and can be further processed and utilized as needed.

5. The process for producing food-grade xylose from corncobs according to claim 1, characterized in that: In the step S4, the specific filtering is to prepare a filtering device, and a filter made of filter paper, filter cloth or other filter materials is usually used. Before pouring the extract into the filter, ensure that the extract has been fully cooled and reaches room temperature, place the filter on an appropriate filter stand or funnel, ensure that the filter is stable and not loose, and slowly pour the extract into the filter to avoid overflow or filter clogging too quickly. When pouring the extract, pay attention to controlling the pouring speed so that the liquid can pass through the filter evenly. During the filtration process, pay attention to whether there are any particles remaining or clogging on the filter. After the extract passes through the filter, collect the filtered liquid, which is a clear liquid after the solid particles and impurities are separated. After the filtration is completed, remove the filter, clean or treat the filter to remove the residual solid particles. If the filter needs to be used again, ensure that it is cleaned and thoroughly dried. Through the above steps, the corn cob filtration process can effectively separate solid particles and impurities to obtain a clear and transparent extract, which provides a basis for subsequent processing and utilization.

6. The process for producing food-grade xylose from corncobs according to claim 1, characterized in that: In step S5, the concentration is specifically to pour the extract into a special reduced pressure evaporation device, use the reduced pressure system inside the device to reduce the system pressure, and while reducing the pressure, heat the extract to evaporate the water therein, and continue heating and reducing pressure until the extract is concentrated to the desired concentration. After the concentration is completed, a more concentrated and pure extract can be obtained, which is convenient for subsequent storage, analysis and application.

7. The process for producing food-grade xylose from corncobs according to claim 1, characterized in that: In the step S6, the specific crystallization is to slowly cool the concentrated extract to room temperature or lower temperature. When the temperature drops to a certain level, some of the components dissolved in the extract will gradually become supersaturated and crystallize out. The crystallization process can be promoted by controlling the temperature and adding crystal seeds, and the desired crystalline product can be obtained. Secondly, a suitable solvent is added to the concentrated extract to reduce the solubility of some components therein. By gradually adjusting the temperature, solvent concentration or solvent type, the target component is gradually supersaturated and crystallized, and the crystallized target product is separated and collected from the solution.

8. The process for producing food-grade xylose from corncobs according to claim 1, characterized in that: In the step S7, the specific filtration separation is as follows: first, xylose crystals are formed in the solution, and the solution needs to be transferred to a container suitable for filtration. If there are other impurities in the solution, pretreatment such as filtration or precipitation can be considered, and a suitable filter medium such as filter paper, filter membrane or other filter material is selected to ensure that the xylose crystals can be effectively separated and their morphology is retained. The prepared filter medium is placed in a filtering device such as a funnel or a vacuum filter device, and the solution is slowly poured into the filter to allow the solution to pass through the filter medium, while the xylose crystals are retained on the filter medium. Secondly, an appropriate amount of washing liquid such as pure water or an appropriate solution is used to wash the filtered xylose crystals to remove residual solution and impurities. The washed xylose crystals are placed in a well-ventilated environment, or are quickly dried using appropriate drying equipment to obtain clean xylose crystals.

9. The process for producing food-grade xylose from corncobs according to claim 1, characterized in that: In the step S8, the specific drying is to place the xylose crystals in a well-ventilated environment and allow them to evaporate water naturally. This method takes time, but has little effect on the crystal structure and purity. At the same time, hot air or an oven can be used to dry the xylose crystals. At an appropriate temperature, hot air can quickly evaporate the water in the crystals and accelerate the drying process. It should be noted that the temperature should not be too high to avoid damaging the crystal structure. Secondly, under vacuum conditions, the environmental pressure is reduced so that water evaporates directly from the surface of the xylose crystals at low temperatures. This method is suitable for situations where high requirements are placed on the crystal structure and purity. Furthermore, the user can first freeze the xylose crystals into a solid, and then directly sublimate the solid water into a gas under vacuum conditions to achieve drying. This method is suitable for situations where high requirements are placed on the crystal structure and morphology, but the equipment and operating costs are high. When performing the drying process, it is necessary to pay attention to controlling the temperature, humidity and drying time to avoid adverse effects on the xylose crystals. After drying, the xylose crystals can be stored in a dry and sealed container to prevent moisture absorption and contamination.