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公开(公告)号：US20180371516A1
公开(公告)日：2018-12-27
申请号：US15742561
申请日：2016-07-11
申请人： DSM IP ASSETS B.V.
发明人： Robert GEERTMAN , Igor GALAEV
摘要： The present invention relates to a composition comprising one or more steviol glycosides which composition comprises nitrogen in an amount of no more than about 1000 ppm. The invention also relates to a method for preparing a steviol glycoside composition, which method comprises: providing a steviol glycoside composition; combining the steviol glycoside composition with water to form a steviol glycoside solution; and crystallizing a steviol glycoside composition from the solution. The invention also relates to a method for reducing the nitrogen content of a steviol glycoside composition, which method comprises: providing a steviol glycoside composition which comprises nitrogen; combining the steviol glycoside composition with water to form a steviol glycoside solution; and crystallizing a steviol glycoside composition from the solution, thereby to reduce the amount of nitrogen in the steviol glycoside composition.
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公开(公告)号：US20160214868A1
公开(公告)日：2016-07-28
申请号：US14649823
申请日：2013-11-29
申请人： DSM IP ASSETS B.V.
发明人： Geert EKKELENKAMP , Johannes Elisabeth Pierre DEBEIJ , Robert GEERTMAN , Peter VAN YSACKER , Johan Thomas TINGE
CPC分类号： C01C1/24 , B01D9/0031 , B01D9/0036 , B01D9/004 , B01D9/0059 , B01D9/0063 , B01D2009/0086 , C01C1/248 , C05C3/00 , C05C3/005
摘要： The present invention provides a continuous process for producing ammonium sulfate crystals, wherein said process comprises: i) feeding to a series of crystallization sections, which crystallization sections are heat integrated in series, a solution of ammonium sulfate; ii) crystallizing ammonium sulfate crystals from said solution of ammonium sulfate; iii) purging a fraction of the solution of ammonium sulfate from each of said crystallization sections;and iv) discharging ammonium sulfate crystals from each crystallization section, characterized in that: a fraction of said solution of ammonium sulfate is purged from at least one crystallization section to at least one other crystallization section; and an apparatus suitable for producing ammonium sulfate crystals.
摘要翻译： 本发明提供了一种生产硫酸铵晶体的连续方法，其中所述方法包括：i）将一系列结晶部分送入一系列结晶部分，该结晶部分串联加热一体化，形成硫酸铵溶液; ii）从所述硫酸铵溶液中结晶出硫酸铵晶体; iii）从每个所述结晶部分清洗一部分硫酸铵溶液;和iv）从每个结晶部分排出硫酸铵晶体，其特征在于：将所述硫酸铵溶液的一部分从至少一个结晶部分 至少另一个结晶部分; 和适用于生产硫酸铵晶体的装置。
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公开(公告)号：US20210371445A1
公开(公告)日：2021-12-02
申请号：US17404695
申请日：2021-08-17
申请人： DSM IP ASSETS B.V.
发明人： Robert GEERTMAN , Igor GALAEV
IPC分类号： C07H15/256 , A23L27/30 , C07H1/06
摘要： The present invention relates to a composition comprising one or more steviol glycosides which composition comprises kaurenoic acid in an amount of no more than 150 ppm. The invention also relates to a method for preparing a steviol glycoside composition, which method comprises: providing a steviol glycoside composition; combining the steviol glycoside composition with a solvent to form a steviol glycoside solution; and crystallizing a steviol glycoside composition from the steviol glycoside solution, wherein the crystallization is carried out at pH7.0 or below. The invention also relates to a method for reducing the kaurenoic acid content of a steviol glycoside composition, which method comprises: providing a steviol glycoside composition which comprises kaurenoic acid; combining the steviol glycoside composition with a solvent to form a steviol glycoside solution; and crystallizing a steviol glycoside composition from the steviol glycoside solution, wherein the crystallization is carried out at pH7.0, thereby to reduce the amount of kaurenoic acid in the steviol glycoside composition.
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公开(公告)号：US20210310034A1
公开(公告)日：2021-10-07
申请号：US17351509
申请日：2021-06-18
申请人： DSM IP ASSETS B.V.
发明人： Robert GEERTMAN , Igor GALAEV
摘要： The present invention relates to a composition comprising one or more steviol glycosides which composition comprises nitrogen in an amount of no more than about 1000 ppm. The invention also relates to a method for preparing a steviol glycoside composition, which method comprises: providing a steviol glycoside composition; combining the steviol glycoside composition with water to form a steviol glycoside solution; and crystallizing a steviol glycoside composition from the solution. The invention also relates to a method for reducing the nitrogen content of a steviol glycoside composition, which method comprises: providing a steviol glycoside composition which comprises nitrogen; combining the steviol glycoside composition with water to form a steviol glycoside solution; and crystallizing a steviol glycoside composition from the solution, thereby to reduce the amount of nitrogen in the steviol glycoside composition.
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公开(公告)号：US20180371003A1
公开(公告)日：2018-12-27
申请号：US15742355
申请日：2016-07-11
申请人： DSM IP ASSETS B.V.
发明人： Robert GEERTMAN , Igor GALAEV
IPC分类号： C07H15/256 , C07H1/06 , A23L27/30
摘要： The present invention relates to a composition comprising one or more steviol glycosides which composition comprises kaurenoic acid in an amount of no more than 150 ppm. The invention also relates to a method for preparing a steviol glycoside composition, which method comprises: providing a steviol glycoside composition; combining the steviol glycoside composition with a solvent to form a steviol glycoside solution; and crystallizing a steviol glycoside composition from the steviol glycoside solution, wherein the crystallization is carried out at pH7.0 or below. The invention also relates to a method for reducing the kaurenoic acid content of a steviol glycoside composition, which method comprises: providing a steviol glycoside composition which comprises kaurenoic acid; combining the steviol glycoside composition with a solvent to form a steviol glycoside solution; and crystallizing a steviol glycoside composition from the steviol glycoside solution, wherein the crystallization is carried out at pH7.0, thereby to reduce the amount of kaurenoic acid in the steviol glycoside composition.
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