Coffee extraction process and product
    2.
    发明公开
    Coffee extraction process and product 失效
    Verfahren zum Extrahieren von Kaffee und Produkt

    公开(公告)号:EP0826308A1

    公开(公告)日:1998-03-04

    申请号:EP96202356.0

    申请日:1996-08-26

    IPC分类号: A23F5/26 A23F5/36

    CPC分类号: A23F5/262 A23F5/36

    摘要: A process for the counter-current extraction of soluble coffee solids. Soluble coffee solids are extracted from roast and ground coffee in a first extraction stage using a primary extraction liquid at a temperature of 80°C to 160°C. Then soluble coffee solids are extracted from the partially extracted grounds in a second extraction stage using a secondary extraction liquid at a temperature of 160°C to 190°C, the coffee grounds having at least 25% by weight of soluble coffee solids extracted from them. The coffee grounds obtained from the second extraction stage are drained and thermally hydrolysed in a hydrolysis stage at a temperature of 160°C to 220°C for 1 to 15 minutes. Soluble coffee solids are extracted from the hydrolysed coffee grounds in a third extraction stage using a tertiary extraction liquid at a temperature of 170°C to 195°C to provide extracted coffee grounds and a hydrolysed coffee extract.
    A soluble coffee product is obtained containing at least 30% saccharides, comprising less than 1% furfural derivatives, less than 4% monosaccharides, less than 10% oligosaccharides and at least 19% polysaccharides, the saccharides having a weighted average molecular weight of greater than 2000 units with a polydispersity above 3.

    摘要翻译: 用于逆流萃取可溶性咖啡固体的方法。 在第一次提取阶段,使用初级提取液,在80℃至160℃的温度下,从焙炒和研磨的咖啡中提取可溶性咖啡固体。然后在第二次提取阶段,从部分提取的土壤中提取可溶咖啡固体,使用 在160℃至190℃的温度下的二次萃取液,咖啡渣从其中提取至少25重量%的可溶性咖啡固体。 从第二萃取阶段获得的咖啡渣在水解阶段中在160℃至220℃的温度下排水并热水解1至15分钟。 在第三次萃取阶段,使用三级萃取液在170℃至195℃的温度下,从水解的咖啡渣中提取可溶性咖啡固体,以提供提取的咖啡渣和水解咖啡提取物。 获得的可溶性咖啡产品含有至少30%的糖,包含小于1%的糠醛衍生物,小于4%的单糖,低于10%的寡糖和至少19%的多糖,所述糖的加权平均分子量大于 2000单位,多分散性高于3.