Instant coffee powder is ground coffee beans brewed into coffee liquid and then made into powder by spray drying or freeze-drying. Compared with freeze-dried coffee powder, the production process of instant coffee powder pays more attention to efficiency and cost control.
Production process
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It mainly consists of the following parts:
(1) Pretreatment, that is, screening and cleaning of green coffee beans, removing foreign bodies such as metal, stone particles, dust and crushed beans and moldy beans.
(2) Roasting, the substance contained in the coffee bean in the process of complex physical and chemical reactions, the formation of unique coffee aromatic substances.
(3) Grinding, in order to improve the extraction efficiency, the roasted coffee beans are ground into particles of a certain size.
(4) Extraction, under a certain temperature and pressure, the effective ingredients of coffee are extracted into water.
(5) Concentration, through vacuum concentration, at a lower temperature (-50 ° C) to increase the concentration of coffee (generally 40%), mainly in order to facilitate drying operation.
(6) Drying, which is the process of instant coffee powder forming, is also the process that has the greatest impact on the quality of coffee powder in the whole processing process. Generally using spray drying method
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