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公开(公告)号：US11028420B2
公开(公告)日：2021-06-08
申请号：US16624973
申请日：2018-06-22
发明人： Min Hoe Kim , Joo Hang Lee , Hye Jin Jo , Seong Bo Kim , Yang Hee Kim , Jung Eun Kim , Seung Won Park , Eun Jung Choi
摘要： The present application relates to a method for producing D-psicose, the method comprising the steps of: putting a composition containing a D-psicose borate complex into a chromatography comprising divalent cations; and separating the composition containing the D-psicose borate complex into a D-psicose-containing fraction (i) and a borate-containing fraction (ii).
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公开(公告)号：US10246476B2
公开(公告)日：2019-04-02
申请号：US15520786
申请日：2015-08-09
发明人： Seong Bo Kim , Seung Won Park , Jun Gap An , Joo Hang Lee
摘要： A method for producing high purity D-psicose crystals having a purity of 98% (w/w) or more and a grain size of MA200 or more. The method includes: removing impurities from a D-psicose solution to obtain a purified D-psicose solution; concentrating the purified D-psicose solution; cooling the concentrated D-psicose solution to 30° C. to 40° C. through a heat exchanger; seed crystallizing the D-psicose solution at 30° C. to 40° C. to obtain a seed crystallized massecuite; and full-scale crystallizing the seed crystallized massecuite. The method can produce pure D-psicose crystals in a suitable form for industrial application through an economical crystallization process from the D-psicose solution without using organic solvents.
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公开(公告)号：US20220332745A1
公开(公告)日：2022-10-20
申请号：US17297586
申请日：2019-11-29
发明人： Young Soo Park , Joo Hang Lee , Seong Bo Kim , Seung Won Park
摘要： The present disclosure relates to a preparation method for a D-psicose crystal containing 98% (w/w) or more D-psicose and 0.05% (w/w) or less ethanol based on 100% (w/w) of the entire crystal. The preparation method includes a first step of mixing a D-psicose-containing solution and an organic solvent, and a second step of adding a seed to the mixed solution according to the first step and then cooling the same to obtain a massecuite containing the D-psicose crystal. Therefore, it is possible to increase the yield of the D-psicose crystal from the D-psicose crystal solution and prepare a D-psicose crystal of sufficient size and appropriate shape for use in mass production with no bad taste/smell.
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公开(公告)号：US11091420B2
公开(公告)日：2021-08-17
申请号：US16062562
申请日：2016-10-21
发明人： Joo Hang Lee , Young Ho Hong , Ji Hyun Kang , Hwa Jeong Lee , Min Hoe Kim , Seung Won Park , Seong Jun Cho
IPC分类号： C07C59/68 , C07C51/47 , C07C59/64 , C07C59/13 , B01J20/20 , C07C51/42 , B01D17/00 , C07C51/48 , C07C51/43 , C12P7/42 , C08B30/04
摘要： The present disclosure relates to a series of preparation methods including extraction, separation, purification, and commercialization of ferulic acid, which is a highly functional material from corn brans (a by-product of grain), and more specifically, to a preparation method wherein ferulic acid is extracted from corn brans (a by-product of grain) in high yield by a novel method, and the extracted ferulic acid is separated and purified in high yield and high purity by an economical method, followed by commercialization.
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公开(公告)号：US10808002B2
公开(公告)日：2020-10-20
申请号：US16279860
申请日：2019-02-19
发明人： Seong Bo Kim , Seung Won Park , Jun Gap An , Joo Hang Lee
摘要： A method for producing high purity D-psicose crystals having a purity of 98% (w/w) or more and a grain size of MA200 or more. The method includes: removing impurities from a D-psicose solution to obtain a purified D-psicose solution; concentrating the purified D-psicose solution; cooling the concentrated D-psicose solution to 30° C. to 40° C. through a heat exchanger; seed crystallizing the D-psicose solution at 30° C. to 40° C. to obtain a seed crystallized massecuite; and full-scale crystallizing the seed crystallized massecuite. The method can produce pure D-psicose crystals in a suitable form for industrial application through an economical crystallization process from the D-psicose solution without using organic solvents.
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公开(公告)号：US10920257B2
公开(公告)日：2021-02-16
申请号：US15776930
申请日：2016-04-12
发明人： Joo Hang Lee , Min Hoe Kim , Seong Bo Kim , Seung Won Park
摘要： Disclosed herein is a method of producing D-psicose. The method of producing D-psicose includes subjecting D-fructose to D-psicose epimerization to produce a D-psicose-containing solution, subjecting the D-psicose-containing solution to first cooling and ion purification, subjecting the purified D-psicose-containing solution to first concentration and second cooling, subjecting the D-psicose-containing solution, which has been subjected to first concentration and second cooling, to chromatography to obtain a D-fructose-containing mother liquor and a D-psicose-containing separated solution, and subjecting the D-psicose-containing separated solution to second concentration and third cooling to obtain D-psicose crystals, wherein the D-fructose-containing mother liquor produced by chromatography is reused in the D-psicose epimerization.
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