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公开(公告)号：EP4424693A1
公开(公告)日：2024-09-04
申请号：EP23892745.3
申请日：2023-05-25
发明人： HAN, Xinfeng , LI, Dongxu , YANG, Minqian , LIAO, Chengjun , QIN, Shufang , LUO, Jiaxing
摘要： The present disclosure relates to a method for preparing a high-purity arabinose crystal, comprising operations of dissolving, blending, ion exchange, decolorization and filtration, fine filtration, evaporation and concentration, crystallization, centrifugation, and drying performed in sequence on a low-purity arabinose crystal. Throughout the operations of preparing the arabinose crystal, a pH value of a material is controlled between 4.3 and 7.5, and a temperature does not exceed 70°C. This prevents arabinose from transforming into impurities under a high temperature, thereby maintaining and improving a purity of the prepared arabinose crystal.
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2.发明公开
公开(公告)号：EP4023773A1
公开(公告)日：2022-07-06
申请号：EP21753256.3
申请日：2021-02-07
发明人： CHEN, Shengrong , ZHUGE, Jun , CHENG, Yuqing , HAN, Xinfeng , LUO, Jiaxing
IPC分类号： C13K1/08 , B01J47/04 , B01J47/028
摘要： The present invention relates to a system for reducing a content of 5-hydroxymethylfurfural in a high fructose syrup, including an ion exchange positive column and an ion exchange negative column for performing cation and anion removals in sequence for an F42 high fructose syrup obtained by performing isomerization and first decolorization, a heat exchanger for performing heat exchange and temperature reduction for an F55 high fructose syrup obtained by performing concentration, chromatographic separation, blending and second decolorization in sequence for the F42 high fructose syrup subjected to ion exchange, a mixed bed column for performing purification for the heat-exchanged F55 high fructose syrup, and an evaporation tank for performing concentration for the F55 high fructose syrup subjected to mixed bed treatment. The present invention further provides a method of reducing a content of 5-hydroxymethylfurfural in a high fructose syrup. In the present invention, optimization is performed for ion exchange and operation modes and parameters of the mixed bed such that the HMF content in the high fructose syrup product is reduced in a case of ensuring the quality of the high fructose syrup product, thus improving the quality of the high fructose syrup product.
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3.发明公开
公开(公告)号：EP4317167A1
公开(公告)日：2024-02-07
申请号：EP22909617.7
申请日：2022-11-21
发明人： YAO, Yanhui , HAN, Xinfeng , WAN, Fuan , YUE, Hang , SHEN, Weixin , DAI, Haojun , YANG, Mingqian , LI, Mian
摘要： The present disclosure relates to a method for preparing liquid maltitol and liquid polyols from a raffinate including maltitol. The method comprises the following steps: obtaining a hydrogenated liquid by hydrogenating a pre-treated raffinate including maltitol, obtaining a post-treated liquid by post-treatment of the hydrogenated liquid to remove impurities, obtaining a dilute liquid and a concentrated maltitol solution by membrane-separation of the post-treated liquid, and using the dilute liquid as the liquid polyols, and obtaining the liquid maltitol by mixing the concentrated maltitol solution with a prepared maltitol solution with a maltitol content of over 50%, wherein the liquid maltitol has a maltitol content greater than or equal to 50% and meets a China national standard. Before the membrane separation process, the present disclosure reduces the reducing sugar content in the liquid by hydrogenation to lower the risk of yellowing during the process and to improve the quality of the final product. The present disclosure is simple to operate, has a short production cycle, and achieves comprehensive utilization of by-products, resulting in good economic benefits.
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