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105 条记录 (耗时 0.014 秒)

    Method and product for decaffeinating an aqueous solution using molecularly imprinted polymers
    84.
    发明授权
    Method and product for decaffeinating an aqueous solution using molecularly imprinted polymers 有权

    公开(公告)号：US6391359B2

    公开(公告)日：2002-05-21

    申请号：US96942701

    申请日：2001-10-01

    申请人： LEONE ANNA MADELEINE

    发明人： LEONE ANNA MADELEINE

    IPC分类号： A23F3/38 ,  A23F5/22 ,  A23F3/20

    CPC分类号： B01J20/268 ,  A23F3/385 ,  A23F5/223

    摘要： A method and product for decaffeinating an aqueous solution, such as a cup of coffee or tea, includes exposing the aqueous solution (that is to be decaffeinated) to a plurality of molecularly imprinted polymer beads (MIPS) that have receptor sites on the surfaces thereof that include imprints that match the physical shape of at least a portion of a caffeine molecule. A quantity of the caffeine molecules align with and adhere to some of the receptor sites and, accordingly, they are removed from the aqueous solution producing a decaffeinated aqueous solution. The MIPS are contained in an enclosure having a plurality of openings large enough to permit the aqueous solution to pass through and small enough so as to prevent the MIPS from passing through. Accordingly, the MIPS are absent from the decaffeinated aqueous solution. A variety of ways of affecting the efficacy of the process are described, such as varying the time the aqueous solution is exposed to the MIPS or varying the quantity of MIPS (beads) that the aqueous solution is exposed to. Processes useful for creating the MIPS and of removing the caffeine molecules therefrom (i.e., cleaning the MIPS so that they are suitable to use in decaffeinating the aqueous solution) are described. The cleaning and subsequent reuse of the MIPS is also described.

    Method and product for decaffeinating an aqueous solution using molecularly imprinted polymers
    85.
    发明申请
    Method and product for decaffeinating an aqueous solution using molecularly imprinted polymers 有权

    公开(公告)号：US20020012727A1

    公开(公告)日：2002-01-31

    申请号：US09969427

    申请日：2001-10-01

    发明人： Anna Madeleine Leone

    IPC分类号： A23L002/38

    CPC分类号： B01J20/268 ,  A23F3/385 ,  A23F5/223

    摘要： A method and product for decaffeinating an aqueous solution, such as a cup of coffee or tea, includes exposing the aqueous solution (that is to be decaffeinated) to a plurality of molecularly imprinted polymer beads (MIPS) that have receptor sites on the surfaces thereof that include imprints that match the physical shape of at least a portion of a caffeine molecule. A quantity of the caffeine molecules align with and adhere to some of the receptor sites and, accordingly, they are removed from the aqueous solution producing a decaffeinated aqueous solution. The MIPS are contained in an enclosure having a plurality of openings large enough to permit the aqueous solution to pass through and small enough so as to prevent the MIPS from passing through. Accordingly, the MIPS are absent from the decaffeinated aqueous solution. A variety of ways of affecting the efficacy of the process are described, such as varying the time the aqueous solution is exposed to the MIPS or varying the quantity of MIPS (beads) that the aqueous solution is exposed to. Processes useful for creating the MIPS and of removing the caffeine molecules therefrom (i.e., cleaning the MIPS so that they are suitable to use in decaffeinating the aqueous solution) are described. The cleaning and subsequent reuse of the MIPS is also described.

    Caffeine adsorbent liquid filter with integrated adsorbent
    86.
    发明授权
    Caffeine adsorbent liquid filter with integrated adsorbent 失效
    咖啡因吸附剂液体过滤器与集成吸附剂

    公开(公告)号：US5603830A

    公开(公告)日：1997-02-18

    申请号：US448801

    申请日：1995-05-24

    申请人： Dennis S. Everhart ,  Rosann M. Kaylor ,  Kenneth R. Smith

    发明人： Dennis S. Everhart ,  Rosann M. Kaylor ,  Kenneth R. Smith

    IPC分类号： A23F3/38 ,  A23F5/22 ,  B01J20/28 ,  B01D39/00

    CPC分类号： B01J20/28028 ,  A23F3/385 ,  A23F5/223 ,  B01J20/28033

    摘要： An adsorbent filter for removing caffeine from liquids. The filter is composed of a matrix of fibrous material; and adsorbent particulate material integrated within the matrix of fibrous material, so that passage of a liquid having a caffeine concentration ranging from about 20 to about 100 mg per 100 mL of liquid through the matrix for a contact time of less than about 2 minutes results in at least a 40 percent reduction in the caffeine concentration of the liquid. The matrix of fibrous material may be selected from woven fabrics, knit fabrics and nonwoven fabrics. The adsorbent material may be clay minerals such as, for example, smectite clay minerals. Examples of smectite clay minerals include, bentonite clays and montmorillonite clays. Generally speaking, the filter can be adapted to provide at least a 40 percent reduction in the caffeine concentration for about 1 cup to about 40 cups of a liquid.

    摘要翻译： 用于从液体中去除咖啡因的吸附剂过滤器。 过滤器由纤维材料基体组成; 以及整合在纤维材料基质内的吸附剂颗粒材料，使得咖啡因浓度范围为每100mL液体约20至约100mg的液体通过基质，接触时间小于约2分钟，导致 咖啡因浓度至少降低40％。 纤维材料的基质可以选自机织织物，针织织物和非织造织物。 吸附剂材料可以是粘土矿物，例如蒙脱石粘土矿物。 蒙皂石粘土矿物的实例包括膨润土和蒙脱石粘土。 一般来说，过滤器可以适合于提供约1杯至约40杯液体的咖啡因浓度的至少40％的降低。

    Process for decaffeinating raw coffee
    88.
    发明授权
    Process for decaffeinating raw coffee 失效
    脱咖啡因生咖啡的过程

    公开(公告)号：US5208056A

    公开(公告)日：1993-05-04

    申请号：US459522

    申请日：1990-01-02

    申请人： Arthur G. Fischer ,  Peter M. Kummer

    发明人： Arthur G. Fischer ,  Peter M. Kummer

    IPC分类号： A23F5/20 ,  A23F5/22

    CPC分类号： A23F5/223 ,  A23F5/208

    摘要： Caffeine is extracted from the raw coffee by means of an aqueous liquid and adsorbed from the latter on an adsorption agent such as activated charcoal. In order for the adsorption agent to absorb as little as possible of other substances that are extractable from the coffee, the agent is previously loaded with such other extractable substances or with substitute substances having a molecular structure and size similar to the latter, more particularly with carbohydrates as exemplified by cane sugar. The aqueous extractant is preferably a caffeine-free coffee extract solution which substantially extracts only caffeine from the coffee. Other aqueous liquids may be employed, but generally require recombination with the coffee after the adsorption step.

    摘要翻译： 咖啡因通过水性液体从生咖啡中提取，并从后者吸附在吸附剂如活性炭上。 为了使吸附剂尽可能少地吸收可从咖啡中提取的其它物质，预先将该试剂装载到其它可提取物质中，或者与具有与后者相似的分子结构和大小的替代物质，特别是与 碳水化合物，如蔗糖所示。 含水提取剂优选是不含咖啡因的咖啡提取物溶液，其基本上仅从咖啡中提取咖啡因。 可以使用其它水性液体，但是在吸附步骤后通常需要与咖啡重组。

    Process for decaffeinating green coffee
    89.
    发明授权
    Process for decaffeinating green coffee 失效
    脱咖啡因生咖啡的过程

    公开(公告)号：US4885181A

    公开(公告)日：1989-12-05

    申请号：US300722

    申请日：1989-01-25

    申请人： Louris Kaper

    发明人： Louris Kaper

    IPC分类号： A23F5/22 ,  C07D473/12

    CPC分类号： A23F5/223 ,  C07D473/12

    摘要： A process for decaffeinating green coffee by extraction of the coffee with water and treatment of the aqueous extract with activated carbon whereby the caffeine is largely absorbed by the activated carbon. The resulting caffeine-loaded activated carbon is then treated with a selected acid whereby the caffeine is largely removed from the activated carbon. The carbon is then washed with water until it has pH in the range of 3 to 6, determined by the standard test method for pH of activated carbon (ASTM D 3838-80). The activated carbon is then ready to be reused more than ten times in the process without further treatment.

    Separate recovery of caffeine and coffee solids adsorbed on activated carbon
    90.
    发明授权
    Separate recovery of caffeine and coffee solids adsorbed on activated carbon 失效
    分离回收吸附在活性炭上的咖啡因和咖啡固体

    公开(公告)号：US4548827A

    公开(公告)日：1985-10-22

    申请号：US363714

    申请日：1982-03-30

    申请人： Saul N. Katz ,  George E. Proscia ,  George L. Clisura

    发明人： Saul N. Katz ,  George E. Proscia ,  George L. Clisura

    IPC分类号： A23F5/22 ,  C07D473/12

    CPC分类号： A23F5/223 ,  C07D473/12

    摘要： The present invention relates to a method of separately recovering caffeine and non-caffeine solids adsorbed on activated carbon. Activated carbon containing the adsorbed solids is contacted with an aqueous basic solution to elute the non-caffeine coffee solids. The two components are separated. The activated carbon is subsequently contacted with a concentrated aqueous acidic solution to elute the relatively pure caffeine. The two components are separated. The non-caffeine solids in the basic solution may be re-adsorbed onto the activated carbon. Essentially pure caffeine may be refined from the aqueous acidic solution.

    摘要翻译： 本发明涉及分别回收吸附在活性炭上的咖啡因和非咖啡因固体的方法。 将含有吸附固体的活性炭与碱性水溶液接触以洗脱非咖啡因咖啡固体。 两个组件分开。 随后将活性炭与浓缩的酸性水溶液接触以洗脱相对纯的咖啡因。 两个组件分开。 碱性溶液中的非咖啡因固体可以被再吸附到活性炭上。 可以从酸性水溶液中精制出本质上纯的咖啡因。