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    Process for increasing the charge on a lignocellulosic material
    4.
    发明授权
    Process for increasing the charge on a lignocellulosic material 失效
    增加木质纤维素材料上的电荷的方法

    公开(公告)号：US06187136B1

    公开(公告)日：2001-02-13

    申请号：US09118409

    申请日：1998-07-17

    申请人： Lars Saaby Pedersen ,  Claus Felby ,  Niels Munk

    发明人： Lars Saaby Pedersen ,  Claus Felby ,  Niels Munk

    IPC分类号： D21C9147

    CPC分类号： D21C9/005 ,  D21C5/005 ,  D21H11/12 ,  D21H11/20 ,  D21H17/005 ,  D21H17/06 ,  D21H17/14

    摘要： A process for production of a lignocellulosic material modified by conjugation thereto of a phenolic substance comprising a substituent which, in the conjugated form of the phenolic substance, is, or may become, negatively or positively charged, respectively, comprises: reacting a lignocellulosic fibre material and the phenolic substance with an oxidizing agent in the presence of an enzyme capable of catalyzing the oxidation of phenolic groups by the oxidizing agent; and reacting together the products of the reactions; with the proviso that the phenolic substance is not a phenolic polysaccharide. A strengthened lignocellulose-based product (e.g. a paper product) may be prepared by a procedure wherein a product produced in accordance with the latter process is treated with a strengthening agent having an ionic charge of sign opposite to that which is conferred on the modified lignocellulosic material by the charge-conferring substituent.

    摘要翻译： 一种生产木质纤维素材料的方法，该木质纤维素材料通过与酚物质缀合而改性，该酚类物质包含以共轭形式的酚类物质分别为负性或带正电荷的取代基，包括：将木质纤维素纤维材料 和在能够催化由氧化剂氧化酚基的酶的存在下使用氧化剂的酚类物质; 并使反应产物一起反应; 条件是酚类物质不是酚多糖。 加强的木质素纤维素基产品（例如纸制品）可以通过以下程序制备，其中根据后一方法生产的产品用具有与赋予改性木质纤维素的离子电荷相反的符号的离子电荷的强化剂处理 材料通过电荷赋予取代基。

    Gelling of pectic material using carboxylic ester hydrolase and oxidase and/or peroxidase
    7.
    发明授权
    Gelling of pectic material using carboxylic ester hydrolase and oxidase and/or peroxidase 失效
    使用羧酸酯水解酶和氧化酶和/或过氧化物酶胶结胶质材料

    公开(公告)号：US5998176A

    公开(公告)日：1999-12-07

    申请号：US85344

    申请日：1998-05-27

    申请人： Gitte Budolfsen ,  Lars Saaby Pedersen

    发明人： Gitte Budolfsen ,  Lars Saaby Pedersen

    IPC分类号： C08B37/00 ,  C12P19/04 ,  C12P19/00

    CPC分类号： C12P19/04 ,  C08B37/0045

    摘要： A method for causing gelling or increase of viscosity of an aqueous medium containing a gellable polymeric material which has functionalities with phenolic hydroxy groups, and which, in aqueous medium, is susceptible to viscosity increase or gelling in the presence of a carboxylic ester hydrolase, comprises treating the aqueous medium with: a carboxylic ester hydrolase (EC 3.1.1); and an oxidase (EC 1.10.3) and/or a peroxidase (EC 1.11.1); in the presence of an oxidizing agent suitable for use with the oxidase and/or peroxidase. Gelled products obtainable by the method may be dried or dehydrated to give products which are useful as absorbents for absorbing aqueous media, such as body fluids. In particular, gelling a pectic material obtainable from sugar beets using pectinesterase (EC 3.1.1.11) and laccase (EC 1.10.3.2).

    摘要翻译： 包含具有酚羟基官能团的可胶凝聚合物材料的含水介质的胶凝或粘度增加的方法，并且在含水介质中，在羧酸酯水解酶存在下易于粘度增加或胶凝化的方法包括 用羧酸酯水解酶（EC 3.1.1）处理水性介质; 和氧化酶（EC 1.10.3）和/或过氧化物酶（EC 1.11.1）; 在适合与氧化酶和/或过氧化物酶一起使用的氧化剂的存在下。 可以通过该方法获得的胶凝产品可以被干燥或脱水以得到可用作吸收剂的吸收剂如体液等吸收性介质的产品。 特别是，使用果胶激酶（EC 3.1.1.11）和漆酶（EC 1.10.3.2），可以从甜菜中获得果胶材料。