5-hydroxymethyl-2-furfural production method

    公开(公告)号:US11274089B2

    公开(公告)日:2022-03-15

    申请号:US16312566

    申请日:2017-05-09

    摘要: An object of the present invention is to provide a method for producing 5-hydroxymethyl-2-furfural (5-HMF) suitable for industrial-scale production and a novel catalyst composition for use in synthesizing 5-HMF. The present invention provides a method for producing 5-HMF comprising performing a dehydration reaction of a carbohydrate comprising a hexose as a constituent sugar or a derivative thereof by using activated carbon as a catalyst; and a catalyst composition for use in the reaction for producing 5-HMF from a carbohydrate comprising a hexose as a constituent sugar through a dehydration reaction, the catalyst composition comprising activated carbon.

    MODIFIED STARCH, USE THEREOF, AND METHOD FOR PRODUCING MODIFIED STARCH

    公开(公告)号:US20210301036A1

    公开(公告)日:2021-09-30

    申请号:US17267192

    申请日:2019-08-15

    摘要: To inexpensively and easily provide a modified starch having a novel property.
    A modified starch of which a particle diameter distribution waveform exhibits a single peak, wherein a 10 mass % paste liquid of the modified starch has an RVA peak viscosity that is 5% or less of the RVA peak viscosity of an unmodified starch serving as a raw material, and the difference between the maximum particle diameter and the minimum particle diameter is 2 μm or less. The modified starch is suitable for use as a food additive, a food texture improvement agent, a base material for powderization, a binder additive, a paper-making additive, a building material additive, etc.

    Enzyme Exhibiting a-1,6-Glucosyl Transfer Activity

    公开(公告)号:US20210009977A1

    公开(公告)日:2021-01-14

    申请号:US16971169

    申请日:2019-02-19

    IPC分类号: C12N9/44 C12P19/18

    摘要: The present invention relates to an enzyme having α-1,6-glucosyl transfer activity, which can use a partially degraded starch product as a substrate and is heat resistant and suitable for industrial applications; an enzyme preparation for use in manufacturing α-1,6-glucan, comprising the enzyme as an active ingredient; and a method for manufacturing α-1,6-glucan using the enzyme or enzyme preparation. The present invention provides an enzyme having α-1,6-glucosyl transfer activity, which is any one of proteins (a), (b), and (c): (a) a protein consisting of an amino acid sequence of SEQ ID NO: 3; (b) a protein consisting of an amino acid sequence having at least 90% amino acid sequence identity to the amino acid sequence of SEQ ID NO: 3; and (c) a protein consisting of an amino acid sequence in which one or several amino acid(s) have been substituted, inserted, deleted and/or added in the amino acid sequence of SEQ ID NO: 3.

    Maltose phosohorylase, trehalose phosphorylase, Plesiomonas strain and
preparation process of trehalose
    5.
    发明授权
    Maltose phosohorylase, trehalose phosphorylase, Plesiomonas strain and preparation process of trehalose 失效
    麦芽糖磷酸化酶,海藻糖磷酸化酶,细菌菌株和海藻糖的制备方法

    公开(公告)号:US5807719A

    公开(公告)日:1998-09-15

    申请号:US893504

    申请日:1997-07-11

    CPC分类号: C12N9/1051 C12P19/12 C12R1/01

    摘要: Disclosed are a novel microorganism (FERM BP-5144) belonging to the genus Plesiomonas and having ability to produce maltose phosphorylase and trehalose phosphorylase required for the enzymatic production of trehalose and novel maltose phosphorylase and trehalose phosphorylase obtainable from the microorganism as well as a process for producing the enzymes. A novel process for enzymatically producing trehalose (O-.alpha.-D-glucopyranosyl-(1.fwdarw.1)-D-glucopyranoside) is also disclosed.

    摘要翻译: 本发明公开了一种属于扁球菌属的新型微生物(FERM BP-5144),具有产生可从微生物获得的海藻糖和新型麦芽糖磷酸化酶和海藻糖磷酸化酶所需的麦芽糖磷酸化酶和海藻糖磷酸化酶所需的能力, 产生酶。 还公开了一种用于酶促生产海藻糖(O-α-D-吡喃葡萄糖基 - (1-> 1)-D-吡喃葡萄糖苷)的新方法。

    Rhizopus host vector system
    6.
    发明授权
    Rhizopus host vector system 失效
    根霉宿主载体系统

    公开(公告)号:US5436158A

    公开(公告)日:1995-07-25

    申请号:US165881

    申请日:1993-12-14

    CPC分类号: C12N15/80 C12R1/845

    摘要: A host vector system comprising Rhizopus species such as Rhizopus niveus (IFO4810) and a plasmid derived from Phycomycetes such as Mucor, Phycomyces and Absidia wherein the plasmid is contained in a chromosome and/or cytoplasm of the Rhizopus species. The host vector system is suitable for the extracellular production of proteins and enzymes. A process for preparing the host vector system is also provided.

    摘要翻译: 包括根霉属(Rhizopus niveus)(IFO4810)和源自诸如毛霉属,植物分枝杆菌和唾液霉菌属的植物病原体的质粒的宿主载体系统,其中所述质粒包含在根霉属的染色体和/或细胞质中。 宿主载体系统适用于蛋白质和酶的细胞外生成。 还提供了用于制备宿主载体系统的方法。

    Enzyme exhibiting alpha-1,6-glucosyl transfer activity

    公开(公告)号:US11505789B2

    公开(公告)日:2022-11-22

    申请号:US16971169

    申请日:2019-02-19

    IPC分类号: C12N9/44 C12P19/18

    摘要: The present invention relates to an enzyme having α-1,6-glucosyl transfer activity, which can use a partially degraded starch product as a substrate and is heat resistant and suitable for industrial applications; an enzyme preparation for use in manufacturing α-1,6-glucan, comprising the enzyme as an active ingredient; and a method for manufacturing α-1,6-glucan using the enzyme or enzyme preparation. The present invention provides an enzyme having α-1,6-glucosyl transfer activity, which is any one of proteins (a), (b), and (c): (a) a protein consisting of an amino acid sequence of SEQ ID NO: 3; (b) a protein consisting of an amino acid sequence having at least 90% amino acid sequence identity to the amino acid sequence of SEQ ID NO: 3; and (c) a protein consisting of an amino acid sequence in which one or several amino acid(s) have been substituted, inserted, deleted and/or added in the amino acid sequence of SEQ ID NO: 3.

    Process for producing crystalline tagatose
    9.
    发明授权
    Process for producing crystalline tagatose 失效
    生产结晶塔格糖的方法

    公开(公告)号:US07101432B2

    公开(公告)日:2006-09-05

    申请号:US10344151

    申请日:2001-08-07

    IPC分类号: C30B7/08

    摘要: The present invention provides a method for producing tagatose crystals from an aqueous system using no organic solvent. In this method, seed crystals of tagatose are added to a tagatose solution in which a tagatose purity of solid contents in the solution is at least 70% and a solid contents concentration in the solution is 60 to 98 mass %, and crystallization of tagatose is carried out by stirring and cooling the solution while keeping a degree of super saturation of tagatose at 1.25 or lower. It is preferred that the solution containing tagatose is a solution containing no organic solvent. It is further preferred that a part of massecuite for which the crystallization is completed is added to a mother liquor so as to produce the tagatose crystals semi-continuously or continuously. It is furthermore preferred that the tagatose crystals formed from the massecuite are separated by centrifugation or filtration and dried to obtain tagatose crystals.

    摘要翻译: 本发明提供了一种使用无有机溶剂的水性体系制备塔格糖晶体的方法。 在该方法中,将塔格糖的晶种加入塔帕糖溶液中,其中溶液中固含量的塔格糖纯度为70%以上,固体成分浓度为60〜98质量%,塔格糖结晶为 通过搅拌并冷却溶液,同时保持塔格糖的超饱和程度在1.25以下。 优选含有塔格糖的溶液是不含有机溶剂的溶液。 进一步优选将一部分完成结晶的糖膏部分加入到母液中,以便半连续或连续地生成塔格糖晶体。 此外,优选通过离心或过滤分离由糖膏形成的塔格糖晶体,并干燥以获得塔格糖晶体。