Culturing method, system and apparatus for cell culture
    2.
    发明公开
    Culturing method, system and apparatus for cell culture 失效
    培养方法,细胞培养的系统和装置

    公开(公告)号:EP0371783A3

    公开(公告)日:1991-06-12

    申请号:EP89312421.4

    申请日:1989-11-29

    申请人: HITACHI, LTD.

    IPC分类号: C12M3/00

    CPC分类号: C12M29/16 C12M29/02

    摘要: A culturing method and system are disclosed in which a cell culture broth is withdrawn from a culturing apparatus (1) to a filtration apparatus (6). The withdrawn broth is brought into contact with a membrane (7) for precision filtration. Then a non-toxic gas is blown into the broth by a sparger (9) while filtering the broth to separate the cells from waste liquid. Foams occurring on the surface of the broth due to gas bubbling are broken up by special layers (8). The separated cells are returned to the culture apparatus and the filtrate is withdrawn from the filtration apparatus to a filtrate tank (13). The method and system have such advantages that a perfusion culture of a long period of time can be realized because the clogging of the filtration membrane is effectively prevented.

    Thermostable glucoamylase, a method for production of glucose using same and a plant for production thereof
    3.
    发明公开
    Thermostable glucoamylase, a method for production of glucose using same and a plant for production thereof 失效
    为通过使用相同的装置和它们的制造生产葡萄糖的热稳定性的葡糖淀粉酶处理。

    公开(公告)号:EP0255124A2

    公开(公告)日:1988-02-03

    申请号:EP87111005.2

    申请日:1987-07-29

    申请人: HITACHI, LTD.

    摘要: The thermostable glucoamylase of the present invention is highly active even in acidic pH ranges at high temperatures of 70°C or above.
    According to the process for production of glucose and production plant of the present invention, the liquefaction and saccharification of starch can be performed, without requiring either any cooling step or any neutralizing step with alkalis, because of the use of the thermostable glucoamylase of the present invention in combination with known acid-resistant and thermostable α-­amylase.

    摘要翻译: 本发明的热塑性表葡糖淀粉酶是具有高活性,即使在在70℃或以上的高温酸性pH范围。 。根据生产葡萄糖和本发明中,液化和糖化淀粉的生产设备的过程可以进行,而不需要要么任何冷却步骤或与碱的任何中和步骤中,因为使用了本的热表葡糖淀粉酶的 发明中与已知的耐酸和热稳定α淀粉酶表组合。

    Method of separating living cells
    6.
    发明公开
    Method of separating living cells 失效
    Methode zur Abtrennung lebender Zellen。

    公开(公告)号:EP0368621A2

    公开(公告)日:1990-05-16

    申请号:EP89311517.0

    申请日:1989-11-07

    申请人: HITACHI, LTD.

    摘要: A centrifugal separation method for living cells is disclosed in which a cell containing solution is charged in a rotor chamber confined by a steam pressure-resistant wall. A rotor having septa is disposed in the rotor chamber. The septa are rotated in the same direction at the same angular velocity as the rotor while at least part thereof is immersed in a solution in the rotor when cells are to be centrifuged from the cell-containing solution. After the cells are separated and adhered to the inner surface of the rotor, a supernatant in the rotor is discharged from the rotor. Then a fresh cultivating medium is introduced into the rotor, and the septa and the rotor are rotated at mutually different angular velocities while at least part of the septa is immersed in the fresh medium in the rotor. As a result, the cells are again suspended in the fresh medium.

    摘要翻译: 公开了一种用于活细胞的离心分离方法,其中将含细胞的溶液装入由耐蒸汽压壁限制的转子室中。 具有隔片的转子设置在转子室中。 隔片以与转子相同的角速度沿相同的方向旋转,而当细胞从含细胞溶液离心时,其至少一部分浸入到转子中的溶液中。 在细胞分离并粘附到转子的内表面之后,转子中的上清液从转子中排出。 然后将新鲜的栽培培养基引入转子中,并且隔片和转子以相互不同的角速度旋转,同时至少部分隔片浸入转子中的新鲜培养基中。 结果,细胞再次悬浮在新鲜培养基中。

    Process for liquefying starch
    7.
    发明公开
    Process for liquefying starch 失效
    一种用于淀粉液化过程。

    公开(公告)号:EP0180952A2

    公开(公告)日:1986-05-14

    申请号:EP85114004.6

    申请日:1985-11-04

    申请人: HITACHI, LTD.

    IPC分类号: C12P19/14 C08B30/12

    摘要: This invention relates to a process for liquefying starch. More particularly it relates to an appropriate process for liquefying starch by using a thermostable a-amylase which has an optimum working pH range in an acidic region and a low calcium requirement.
    This invention provides a process for liquefying starch by using a calcium-requiring, thermostable a-amylase which requires a calcium concentration of 10 µM or below under a thermostable condition.
    In the process of the present invention, it is unnecessary to add a calcium salt in liquefying starch and the starch slurry can be reacted while remaining acidic without neutralization, so that the load at the desalting step of the product can be significantly relieved.