Enzyme extract from germinated sorghum for hydrolysis of protein material
    2.
    发明授权
    Enzyme extract from germinated sorghum for hydrolysis of protein material 失效
    来自发芽高粱的酶提取物用于蛋白质材料的水解

    公开(公告)号:US5021338A

    公开(公告)日:1991-06-04

    申请号:US285668

    申请日:1988-12-16

    IPC分类号: A23J3/34 C12P21/06

    CPC分类号: C12P21/06

    摘要: An enzyme system for hydrolysis of protein material from plant and animal sources is obtained by extracting germinated sorghum seeds. The enzyme system contains a proteolytic component active on intact proteins and large peptides at an optimum pH of 3.2 to 4.2 and a peptidase component active on small peptides at an optimum pH of 4.5 to 6.5. A protein hydrolyzate having an average molecular weight within a selected range can be obtained by varying the pH so as to depress activity of the proteolytic component or the peptidase component. The protein hydrolysates which are obtained are characterized by the absence of bitter taste. Furthermore, by suitably adjusting the enzyme concentration in the reaction medium, the temperature and the hydrolysis time, protein hydrolyzates with an average molecular weight lower than 700 and a low percentage of free amino acids can be obtained.

    Chemical-biological process for the removal of H2S from a gas
    3.
    发明授权
    Chemical-biological process for the removal of H2S from a gas 失效
    用于从气体中除去H 2 S的化学 - 生物过程

    公开(公告)号:US07438886B2

    公开(公告)日:2008-10-21

    申请号:US10538925

    申请日:2003-12-04

    IPC分类号: B01D53/52 C01B17/04 C01B17/05

    摘要: The present application relates to a process for removing hydrogen sulfide H2S from a gas (1) by contacting said gas with a liquid solution (2) containing ferric sulfate in an absorption column (RC). Ferric sulfate and H2S react at room temperature and at a pressure ranging from 1 to 1.2 atm. Ferric ions being reduced to two-valent iron and sulfide oxidised to elemental sulfur. The liquid (4) coming out of the absorption column is filtered in two steps, the retentate (6, 8) comprising elemental sulfur, the filtrate (5, 7) containing the iron ions. The filtrate is sent to a bioreactor (RB) for regeneration, i.e. oxidation of iron to Fe3+ by means of thiobacillus ferroxidans and air injection (10). The regenerated solution is reused in the absorption column (RC). The process faces the problems relating to the alignment between the chemical step and the biological step in order to obtain a process which can stably run continuously.

    摘要翻译: 本申请涉及通过在吸收塔(RC)中使所述气体与含有硫酸铁的液体溶液(2)接触从气体(1)除去硫化氢H 2 S的方法。 硫酸铁和H 2 S在室温和1至1.2atm的压力下反应。 铁离子还原成二价铁和硫化物氧化成元素硫。 从吸收塔出来的液体(4)分两个步骤过滤,包含元素硫的渗余物(6,8),含有铁离子的滤液(5,7)。 将滤液送到生物反应器(RB)进行再生,即通过硫杆菌硫氧芽孢杆菌和空气注射(10)将铁氧化成Fe 3+。 再生溶液在吸收塔(RC)中重复使用。 该方法面临与化学步骤和生物学步骤之间的对准有关的问题,以获得可以稳定地连续运行的方法。

    Chemical-biological process for the removal of h2s from a gas
    5.
    发明申请
    Chemical-biological process for the removal of h2s from a gas 失效
    用于从气体中去除h2的化学 - 生物过程

    公开(公告)号:US20060251571A1

    公开(公告)日:2006-11-09

    申请号:US10538925

    申请日:2003-12-04

    IPC分类号: C01B17/02

    摘要: The present application relates to a process for removing hydrogen sulfide H2S from a gas (1) by contacting said gas with a liquid solution (2) containing ferric sulfate in an absorption column (RC). Ferric sulfate and H2S react at room temperature and at a pressure ranging from 1 to 1.2 atm. Ferric ions being reduced to two-valent iron and sulfide oxidised to elemental sulfur. The liquid (4) coming out of the absorption column is filtered in two steps, the retentate (6, 8) comprising elemental sulfur, the filtrate (5, 7) containing the iron ions. The filtrate is sent to a bioreactor (RB) for regeneration, i.e. oxidation of iron to Fe3+ by means of thiobacillus ferroxidans and air injection (10). The regenerated solution is reused in the absorption column (RC). The process faces the problems relating to the alignment between the chemical step and the biological step in order to obtain a process which can stably run continuously.

    摘要翻译: 本申请涉及通过在吸收塔(RC)中使所述气体与含有硫酸铁的液体溶液(2)接触从气体(1)除去硫化氢H 2 S的方法。 硫酸铁和H 2 S在室温和1至1.2atm的压力下反应。 铁离子还原成二价铁和硫化物氧化成元素硫。 从吸收塔出来的液体(4)分两个步骤过滤,包含元素硫的渗余物(6,8),含有铁离子的滤液(5,7)。 将滤液送到生物反应器(RB)进行再生,即通过硫杆菌硫氧芽孢杆菌和空气注射(10)将铁氧化成Fe 3+。 再生溶液在吸收塔(RC)中重复使用。 该方法面临与化学步骤和生物学步骤之间的对准有关的问题,以获得可以稳定地连续运行的方法。