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公开(公告)号：EP0162527A3
公开(公告)日：1988-06-22
申请号：EP85200790
申请日：1985-05-17
发明人： Tse, Hing-Cheung
摘要： @ The present invention comprises a process for the preparation of shelf-stable tea concentrates and tea powders wherein a tea extract is prepared, acidified, and heated; off-flavor and malodorous compounds are removed from the extract; the extract is cooled and precipitates are removed from it; and flavoring and sweetener are blended with the clarified extract. The acidification and heating steps accelerate acid-catalyzed degradation reactions that normally occur causing the development of off-flavor sulfurous compounds and precipitates. By forcing these components to react, removing the resultant volatile compounds, and separating the precipitates formed, the development of these off-flavors, off-aromas, and precipitates in the resultant tea product is prevented. The tea product is shelf stable and use of preservatives such as antioxidants or antimicrobial agents is not needed.
摘要翻译： 本发明包括制备储存稳定的茶浓缩物和茶粉的方法，其中制备，酸化和加热茶提取物; 从提取物中除去异味和恶臭化合物; 将提取物冷却，从其中除去沉淀物; 并将调味剂和甜味剂与澄清的提取物混合。 酸化和加热步骤加速通常发生的酸催化降解反应，导致异味亚硫酸化合物和沉淀物的发展。 通过强制这些组分反应，除去所得的挥发性化合物，并分离所形成的沉淀物，可以防止所得茶产品中的这些异味，脱香味和沉淀物的产生。 茶产品是稳定的，不需要使用防腐剂如抗氧化剂或抗微生物剂。
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公开(公告)号：EP0049497A3
公开(公告)日：1983-06-29
申请号：EP81107864
申请日：1981-10-02
发明人： Husaini, Saeed Ahmad
CPC分类号： B01D61/44 , A23F3/20 , A23F5/18 , A23L2/74 , B01D2311/103
摘要： A process for modifying the acidity and ion content of an aqueous food product by electrodialysis in a system comprising a pair of electrodes and two or more membranes which are either exclusively cation-permeable or exclusively anion-permeable, wherein a feed stream is separated by a membrane from a waste stream, the latter containing a dilute aqueous acid solution when the membranes are cation-permeable and a dilute aqueous basic solution when the membranes are anion-permeable, to which system the application of an electric field between the electrodes causes migration through the membranes of either protons or hydroxyl ions out of the waste stream into the feed stream and either cations or anions respectively out of the feed stream towards their respective attracting electrodes. The process is valuable for reducing the acidity of instant coffee.
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公开(公告)号：EP0198209A3
公开(公告)日：1988-07-13
申请号：EP86103180
申请日：1986-03-10
摘要： A process for preparing a powdered tea extract characterised in that black tea leaves are extracted with hot water to give a first extract which is separated from the tea leaves, concentrated to a solids content of from 5% to 12.5%, and then cooled to a temperature from 5°C to 15°C to form an insoluble cream which is separated from the concentrated first extract and then extracted with water at a temperature of from 40°C to 70°C to give a second extract which is separated from the remaining insoluble cream, after which the first and second extracts are mixed and dried.
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