Process for the release of poly(3-hydroxy carboxylic acids)
    11.
    发明授权
    Process for the release of poly(3-hydroxy carboxylic acids) 失效
    释放聚(3-羟基羧酸)的方法

    公开(公告)号:US5149644A

    公开(公告)日:1992-09-22

    申请号:US633785

    申请日:1990-12-26

    Applicant: Werner Lubitz

    Inventor: Werner Lubitz

    CPC classification number: C12P7/625 C12N9/14

    Abstract: Process for releasing poly(3-hydroxy carboxylic acid) granules from cells of Gram-negative bacteria containing the latter, by expression of a cloned natural or chimeric lysis gene, in which, before induction of lysis gene expression, the ionic strength of doubly charged cations is increased to between 0.05 and 0.5 mol/1, the expression of the lysis gene is induced by raising the temperature, the cells are harvested, and the still wet cells are resuspended in water or buffer solutions, which results in the release of the polymer granules by spontaneous lysis.

    Abstract translation: 通过克隆的天然或嵌合裂解基因的表达释放含有后者的革兰氏阴性细菌的细胞的聚(3-羟基羧酸)颗粒的方法,其中在诱导裂解基因表达之前,双重电荷的离子强度 阳离子增加到0.05和0.5mol / l之间,通过升高温度诱导裂解基因的表达,收获细胞,将仍然湿的细胞重新悬浮在水或缓冲溶液中,导致释放 聚合物颗粒自发溶解。

    Method for producing S-adenosyl-L-homocysteine hydrolase
    14.
    发明授权
    Method for producing S-adenosyl-L-homocysteine hydrolase 失效
    S-腺苷-L-高半胱氨酸水解酶的制备方法

    公开(公告)号:US4609626A

    公开(公告)日:1986-09-02

    申请号:US634208

    申请日:1984-07-25

    Abstract: A method for producing S-adenosyl-L-homocysteine hydrolase, which comprises cultivating a microorganism having the ability to produce S-adenosyl-L-homocysteine hydrolase within its cells in a nutrient medium to accumulate said hydrolase in the cells, said microorganism being a bacterium belonging to the genera Alcaligenes, Pseudomonas, Acinetobacter, Arthrobacter, Enterobacter, Rhodopseudomonas, Agrobacterium, Micrococcus, Corynebacterium, Brevibacterium, Chromobacterium, Xanthomonas, Flavobacterium, Cellulomonas, Azotobacter and Protaminobacter, or an actinomycete belonging to the genera Streptomyces, Mycobacterium, Nocardia, Streptoverticillium, Micromonospora, Micropolyspora, Streptosporangium and Microellobosporia; and then recovering S-adenosyl-L-homocysteine hydrolase from the cells.

    Abstract translation: 一种S-腺苷-L-高半胱氨酸水解酶的制造方法,其特征在于,在营养培养基中培养具有在其细胞内产生S-腺苷-L-高半胱氨酸水解酶的能力的微生物,以在细胞中积聚所述水解酶,所述微生物为 属于产碱杆菌属,假单胞菌属,不动杆菌属,节杆菌属,肠杆菌属,红假单胞菌属,土壤杆菌属,微球菌属,棒状杆菌属,短杆菌属,色杆菌属,黄单胞菌属,黄杆菌属,单核细菌属,固氮菌属和Protaminobacter属的细菌或属于链霉菌属,分枝杆菌属,诺卡氏菌属, 链霉菌,小单孢菌,微孢子虫,链球菌属和微球菌属; 然后从细胞中回收S-腺苷-L-高半胱氨酸水解酶。

    Continuous process for the production of gelable exopolysaccharide
    17.
    发明授权
    Continuous process for the production of gelable exopolysaccharide 失效
    用于生产可凝胶外多糖的连续工艺

    公开(公告)号:US4355106A

    公开(公告)日:1982-10-19

    申请号:US223960

    申请日:1981-01-12

    Inventor: Hugh G. Lawford

    CPC classification number: C12P19/04 Y10S435/813 Y10S435/819 Y10S435/829

    Abstract: The present invention is directed to a two-stage continuous process for the production of a gelable curdlan-type exopolysaccharide. In the first stage a stable, curdlan-producing strain of microorganism such as Alcaligenes faecalis var. myxogenes ATCC 31749 and ATCC 31750, is grown aerobically in an aerated, agitated culture medium containing assimilable carbon, nutrients and organic salts. The amount of nitrogen in the first stage is so limited that the effluent therefrom contains substantially no inorganic nitrogen. The effluent is introduced into a second stage in a constant volume fermenter wherein it is mixed with a nitrogen-free carbohydrate. The resultant mixture is aerated and mixed at pH 5.5 to 6.5 at a temperature of from 25.degree. to 35.degree. C., the volume and dilution rate in the reactor being selected so that the residence time of the microorganism in the fermenter does not exceed an equivalent to the maximum length of time during which the activity of a batch culture of the microorganism with respect to product synthesis is maximal. The product is subsequently isolated.

    Abstract translation: 本发明涉及一种用于制备可凝胶化凝胶多糖型外多糖的两阶段连续方法。 在第一阶段,产生稳定的凝乳糖生产菌株,例如粪产碱杆菌变种。 在含有可同化碳,营养物质和有机盐的充气搅拌的培养基中,有氧生长的是生物素原ATCC 31749和ATCC 31750。 第一阶段的氮气量受到限制,使得其流出物基本上不含无机氮。 将流出物引入恒定体积的发酵罐中的第二阶段,其中将其与无氮碳水化合物混合。 将所得混合物在25℃至35℃的温度下在pH 5.5至6.5下充气和混合,选择反应器中的体积和稀释速率使得微生物在发酵罐中的停留时间不超过 相当于微生物相对于产物合成的分批培养的活性最大的最长时间长度。 产品随后被隔离。

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