知搜-全球专利检索

  1. Login
  2. Sign Up

Search Results

142 records (took 0.028 seconds)

    Thermostable xylanase
    11.
    发明授权
    Thermostable xylanase 失效
    热稳定的木聚糖酶

    公开(公告)号：US5888802A

    公开(公告)日：1999-03-30

    申请号：US963497

    申请日：1997-11-03

    Applicant: Nobuyuki Fukunaga ,  Yuji Iwasaki ,  Satoko Kono ,  Yukio Kita ,  Yoshiya Izumi

    Inventor： Nobuyuki Fukunaga ,  Yuji Iwasaki ,  Satoko Kono ,  Yukio Kita ,  Yoshiya Izumi

    IPC: C12N15/09 ,  C07H21/04 ,  C12N1/20 ,  C12N1/21 ,  C12N9/24 ,  C12N9/42 ,  C12R1/07 ,  C12S3/08 ,  D21C5/00 ,  D21C9/10 ,  C12S3/00

    CPC classification number: C12Y302/01032 ,  C12N9/248 ,  C12Y302/01008 ,  D21C5/005 ,  Y10S435/832 ,  Y10S435/835

    Abstract: The invention relates to a thermostable xylanase selected from xylanase XP1 having a molecular weight of about 22,500, an isoelectric point at around 8.1 and an optimum temperature for reaction of 70.degree. C. or xylanase XP2 having a molecular weight of about 32,000, an isoelectric point at around 8.5 and an optimum temperature for reaction of 80.degree. C., a gene encoding for the thermostable xylanase, a method for producing the xylanase, applications of the xylanase, a bleaching agent containing the xylanase as an active ingredient, a method for bleaching pulp by using the bleaching agent and Bacillus sp. 2113 and Bacillus sp. 208 both having an ability to produce a thermostable xylanase.

    Abstract translation: 本发明涉及一种选自分子量约22,500的木聚糖酶XP1，约8.1的等电点和70℃的反应的最适温度或分子量为约32,000的木聚糖酶XP2的热稳定性木聚糖酶，等电点 约8.5，最适温度为80℃，编码热稳定性木聚糖酶的基因，木聚糖酶的生产方法，木聚糖酶的应用，含有木聚糖酶作为活性成分的漂白剂，漂白方法 通过使用漂白剂和芽孢杆菌 2113和Bacillus sp。 208都具有产生热稳定性木聚糖酶的能力。

    Enzyme additives for ruminant feeds
    13.
    发明授权
    Enzyme additives for ruminant feeds 失效
    反刍动物饲料用酶添加剂

    公开(公告)号：US5720971A

    公开(公告)日：1998-02-24

    申请号：US497913

    申请日：1995-07-05

    Applicant: Karen A. Beauchemin ,  Lyle Rode ,  Vincent J. Sewalt

    Inventor： Karen A. Beauchemin ,  Lyle Rode ,  Vincent J. Sewalt

    IPC: A23K1/14 ,  A23K1/165 ,  A23K1/18 ,  A23K3/03

    CPC classification number: C12Y302/01004 ,  A23K20/189 ,  A23K30/18 ,  A23K50/10 ,  C12Y302/01032

    Abstract: Fibrolytic enzyme supplements for increasing the digestibility of legume forages and grain feeds for ruminants, a method of treating legume forages and grain feeds with fibrolytic enzymes, and feed compositions consisting of feed materials treated with a mixture of fibrolytic enzymes are provided. The enzyme supplements do not pre-digest the feed material but assist in the colonization of feed particles in the rumen by ruminal microbes. The fibrolytic enzyme supplements consist of mixtures of cellulase and xylanase in certain preferred ratios and levels which are dependent on the feed material to be treated. The cellulase and xylanase are dissolved in a buffer solution and sprayed onto dry legume forages or grain feeds. The feed material is then incubated for at least three hours to allow the enzymes to be absorbed into and adhere to the feed material. The resulting feed compositions remain stable for at least one year against predigestion. When cellulase and xylanase are applied to legume forages and grain feeds in certain ratios, levels and in accordance with the methods of the present invention, synergistic effects between the enzymes occur, providing large improvements in digestibility of feed materials at low enzyme levels.

    Abstract translation: 提供用于增加反刍动物的豆类饲料和谷物饲料的消化率的纤维素酶补充剂，用纤维蛋白酶处理豆类饲料和谷物饲料的方法，以及由用纤维素酶混合物处理的饲料原料组成的饲料组合物。 酶补充剂不预消化饲料，但有助于瘤胃微生物对瘤胃饲料颗粒的定植。 纤维素酶补充剂由纤维素酶和木聚糖酶的混合物组成，其依赖于待处理饲料的某些优选比例和水平。 将纤维素酶和木聚糖酶溶解在缓冲溶液中并喷洒到干燥的豆类饲料或谷物饲料上。 然后将饲料料培养至少3小时，以使酶被吸收并粘附到饲料上。 所得饲料组合物在预消化过程中保持稳定至少一年。 当纤维素酶和木聚糖酶以一定的比例，水平应用于豆类饲料和谷物进料时，根据本发明的方法，发生酶之间的协同效应，在低酶水平下提供饲料物质的消化率的大的改进。

    Xylanase from streptomyces roseiscleroticus NRRL-11019 for removing color from kraft wood pulps
    16.
    发明授权
    Xylanase from streptomyces roseiscleroticus NRRL-11019 for removing color from kraft wood pulps 失效
    用于从牛皮纸木浆中去除颜色的链霉菌NRRL-11019的木聚糖酶

    公开(公告)号：US5369024A

    公开(公告)日：1994-11-29

    申请号：US857060

    申请日：1992-03-25

    Applicant: Thomas W. Jeffries ,  Anthony C. Grabski ,  Rajesh N. Patel

    Inventor： Thomas W. Jeffries ,  Anthony C. Grabski ,  Rajesh N. Patel

    IPC: C12N9/24 ,  D21C5/00 ,  C12N1/20

    CPC classification number: C12Y302/01032 ,  C12N9/248 ,  C12Y302/01008 ,  D21C5/005 ,  Y10S435/886

    Abstract: A method of removing color from wood pulp is disclosed. The method comprises the steps of preparing a wood pulp, treating the wood pulp with the xylanase wherein the xylanase is capable of releasing chromophores from the pulp and extracting the wood pulp to remove chromophores. In a preferred form of the invention, the wood pulp is a kraft pulp and the xylanase is selected from the group consisting of xyl 1, xyl 2, xyl 3 and xyl 4. These xylanases are obtained from Streptomyces roseiscleroticus NRRL-11019.

    Abstract translation: 公开了一种从木浆中除去颜色的方法。 该方法包括以下步骤：制备木浆，用木聚糖酶处理木浆，其中木聚糖酶能够从纸浆中释放发色团并提取木浆以除去发色团。 在本发明的优选形式中，木浆是牛皮纸浆，木聚糖酶选自xyl1，xyl2，xyl3和xyl4。这些木聚糖酶获自玫瑰花链霉菌（Streptomyces roseiscleroticus）NRRL-11019。

Patent Agency Ranking