公开(公告)号：US5955047A

公开(公告)日：1999-09-21

申请号：US129698

申请日：1998-08-05

申请人： Yasuko Yamada ,  Kazuhiko Mori ,  Takaaki Arashida ,  Takayuki Koda ,  Takeru Satou ,  Hisao Itoh

发明人： Yasuko Yamada ,  Kazuhiko Mori ,  Takaaki Arashida ,  Takayuki Koda ,  Takeru Satou ,  Hisao Itoh

IPC分类号： A23L1/304 ,  C01B25/39 ,  C01B25/41 ,  C01B25/42 ,  C01B25/445

CPC分类号： C01B25/425 ,  C01B25/41 ,  C01B25/412

摘要： A process for producing an alkali metal polyphosphate, comprising heating a solution comprising a solvent, alkali metal ions, phosphate ions, and 3 to 50% by weight of organic matter, wherein the solution contains, in total, 5 to 65% by weight of the alkali metal ions and the phosphate ions, and the ratio M/P is 1.0 to 3.0, wherein M is the number of moles of alkali metal ions in the solution and P is the number of moles of orthophosphate ions in the solution, at a temperature of 800.degree. to 1200.degree. C. in the presence of excess air, optionally after the solution is at least partially dried to solid, to produce the alkali metal polyphosphate.

摘要翻译： 一种制备碱金属多磷酸盐的方法，包括加热包含溶剂，碱金属离子，磷酸根离子和3至50重量％有机物质的溶液，其中该溶液总共含有5至65重量％ 碱金属离子和磷酸根离子，M / P比为1.0〜3.0，其中M为溶液中碱金属离子的摩尔数，P为溶液中正磷酸根离子的摩尔数， 任选在溶液至少部分地干燥至固体之后，在过量空气存在下，在800至1200℃的温度下，产生碱金属多磷酸盐。

公开(公告)号：US07198943B2

公开(公告)日：2007-04-03

申请号：US10077745

申请日：2002-02-20

申请人： Takayuki Koda ,  Kazuhiro Sato

发明人： Takayuki Koda ,  Kazuhiro Sato

IPC分类号： C12N15/00 ,  C12P13/14 ,  C05F7/00 ,  C07H21/04

CPC分类号： C12P13/14 ,  C05F5/008 ,  C12N1/20 ,  Y02A40/212

摘要： An organic nitrogen-containing composition comprising fermentation mother liquor obtained by culturing a microorganism having L-glutamic acid-producing ability in a liquid medium of which pH is adjusted to a condition under which L-glutamic acid is allowed to be precipitated, to allow L-glutamic acid to be produced and accumulated with precipitation of L-glutamic acid accompanied, and then separating L-glutamic acid from the medium.

摘要翻译： 一种含有发酵母液的有机含氮组合物，所述有机含氮组合物包含通过将pH调节至允许L-谷氨酸沉淀的条件的液体培养基中培养具有L-谷氨酸生产能力的微生物而获得的发酵母液，以允许L 伴随着L-谷氨酸的沉淀而生成和积累的γ-谷氨酸，然后从培养基中分离L-谷氨酸。

公开(公告)号：US07319025B2

公开(公告)日：2008-01-15

申请号：US10338915

申请日：2003-01-09

申请人： Hiroshi Ueda ,  Takayuki Koda ,  Masakazu Sato

发明人： Hiroshi Ueda ,  Takayuki Koda ,  Masakazu Sato

IPC分类号： G12P13/14

CPC分类号： C12N1/20 ,  C12P13/14

摘要： A method for producing L-glutamic acid by fermentation, which comprises culturing a microorganism having L-glutamic acid-producing ability in a liquid medium of which pH is adjusted to a condition under which L-glutamic acid produced by the microorganism is allowed to be precipitated, to allow L-glutamic acid to be produced and accumulated with precipitation of L-glutamic acid accompanied, wherein an operation causing existence of L-glutamic acid crystals in the medium is performed when a concentration of L-glutamic acid in the medium is lower than the concentration at which spontaneous crystallization occurs.

摘要翻译： 一种通过发酵生产L-谷氨酸的方法，其包括在将pH调节至由微生物产生的L-谷氨酸的条件下调节为具有L-谷氨酸生产能力的微生物，使其变为 伴随着L-谷氨酸的沉淀而生成和积累L-谷氨酸，其中当介质中的L-谷氨酸浓度为介质中时，进行介质中存在L-谷氨酸晶体的操作 低于发生自发结晶的浓度。

公开(公告)号：USRE41800E1

公开(公告)日：2010-10-05

申请号：US12485550

申请日：2009-06-16

申请人： Hiroshi Ueda ,  Takayuki Koda ,  Masakazu Sato

发明人： Hiroshi Ueda ,  Takayuki Koda ,  Masakazu Sato

IPC分类号： G12P13/14

CPC分类号： C12N1/20 ,  C12P13/14

摘要： A method for producing L-glutamic acid by fermentation, which comprises culturing a microorganism having L-glutamic acid-producing ability in a liquid medium of which pH is adjusted to a condition under which L-glutamic acid produced by the microorganism is allowed to be precipitated, to allow L-glutamic acid to be produced and accumulated with precipitation of L-glutamic acid accompanied, wherein an operation causing existence of L-glutamic acid crystals in the medium is performed when a concentration of L-glutamic acid in the medium is lower than the concentration at which spontaneous crystallization occurs.

摘要翻译： 一种通过发酵生产L-谷氨酸的方法，其包括在将pH调节至由微生物产生的L-谷氨酸的条件下调节为具有L-谷氨酸生产能力的微生物，使其变为 伴随着L-谷氨酸的沉淀而生成和积累L-谷氨酸，其中当介质中的L-谷氨酸浓度为介质中时，进行介质中存在L-谷氨酸晶体的操作 低于发生自发结晶的浓度。

公开(公告)号：US06881861B2

公开(公告)日：2005-04-19

申请号：US10761253

申请日：2004-01-22

申请人： Yoshiki Saitou ,  Takayuki Koda ,  Hiroshi Ueda ,  Kazuhiro Sato

发明人： Yoshiki Saitou ,  Takayuki Koda ,  Hiroshi Ueda ,  Kazuhiro Sato

IPC分类号： C12P13/14 ,  C07C227/42 ,  C07C229/24 ,  C07C229/00 ,  C07C227/00

CPC分类号： C07C227/42 ,  C07C229/24

摘要： Disclosed herein is a method of purifying L-glutamic acid by transformation recrystallization which method comprises maintaining crude crystals of L-glutamic acid containing α crystals of L-glutamic acid in an aqueous solvent at a temperature of from 50° C. to the boiling point of said aqueous solvent in the coexistence of active carbon until about 30% or more of the crystals of L-glutamic acid have been transformed into β crystals thereof, the amount of said aqueous solvent being an amount not more than the amount sufficient (i.e., an amount insufficient) to form a saturated solution of said crystals of L-glutamic acid, according to which method purified crystals of L-glutamic acid can be obtained extremely rapidly and in high yields, and remarkably conveniently and easily on an industrial scale, as compared with the conventional transformation recrystallization method which is a hitherto common purification method of L-glutamic acid.

摘要翻译： 本文公开了通过转化重结晶纯化L-谷氨酸的方法，该方法包括将含有L-谷氨酸的α晶体的L-谷氨酸的粗晶体在水溶剂中在50℃至沸点 的所述水性溶剂在活性炭的共存下直至约30％以上的L-谷氨酸晶体转变为β晶体，所述水性溶剂的量不大于足够的量（即， 不足量），形成所述L-谷氨酸晶体的饱和溶液，根据该方法可以非常快速且高产率地获得纯化的L-谷氨酸晶体，并且在工业规模上非常方便和容易地获得，如 与常规的转化重结晶方法相比，该方法是迄今常见的L-谷氨酸纯化方法。