Method and microorganism for methionine production by fermentation with improved methionine efflux

    公开(公告)号:US10329591B2

    公开(公告)日:2019-06-25

    申请号:US15507435

    申请日:2015-08-31

    摘要: The present invention is related to a recombinant microorganism optimized for the fermentative production of methionine and/or its derivatives, wherein in said recombinant strain, the methionine efflux is enhanced by overexpressing the homologous logous genes of ygaZ and ygaH genes from Escherichia coli. It is also related to a method for optimizing the fermentative production of methionine or its derivatives comprising the steps of: a. culturing a recombinant microorganism wherein in said microorganism, the methionine efflux is enhanced by overexpressing the ygaZH homologous genes of ygaZ and ygaH genes from Escherichia coli, in an appropriate culture medium comprising a fermentable source of carbon and a source of sulphur, and b. recovering methionine and/or its derivatives from the culture medium.

    PROCESS FOR PRODUCING ALCOHOLS UNDER AEROBIC CONDITIONS AND PRODUCT EXTRACTION USING OLEYL ALCOHOL

    公开(公告)号:US20190169654A1

    公开(公告)日:2019-06-06

    申请号:US16320836

    申请日:2017-07-25

    摘要: The present invention relates to a method of producing at least one alcohol from a carbon source, the method comprising: (a) producing the alcohol in an aqueous medium under aerobic conditions; and (b) extracting the alcohol from step (a) from the aqueous medium by: (bi) contacting the alcohol in the aqueous medium with at least one extracting medium for a time sufficient to extract the alcohol from the aqueous medium into the extracting medium, (bii) separating the extracting medium with the extracted alcohol from the aqueous medium wherein the extracting medium comprises:—oleyl alcohol; or—polypropylene glycol and an alkane wherein the alcohol comprises at least 3 carbon atoms.

    METHOD FOR PRODUCING SILICIC ACID WITH VARIABLE THICKENING

    公开(公告)号:US20190161355A1

    公开(公告)日:2019-05-30

    申请号:US16263079

    申请日:2019-01-31

    IPC分类号: C01B33/18

    摘要: A process for production of silica having variable thickening wherein a) a product stream I containing at least a vaporous, hydrolysable and/or oxidizable silicon compound, b) a product stream II containing oxygen and c) a product stream III containing at least a combustible gas are made to react, where d) a feed port in a pipepiece A, the pipepiece A containing one or more static mixing elements, is used to import product stream I into product stream II, or vice versa and thereby create product stream IV, then e) a feed port in a pipepiece B, the pipepiece B containing one or more static mixing elements, is used to import product stream III in product stream IV and thereby create product stream V, f) product stream V leaving pipepiece B is imported into a reaction chamber, ignited therein and reacted in a flame, and g) the resultant solid material is separated off.