METHOD OF COFFEE EXTRACT OR SUBSTITUTES PRODUCTION AND ASSOCIATED PLANT Russian patent published in 2008 - IPC A23F5/10 A23F5/24 

FIELD: food industry.

SUBSTANCE: method provides for preliminary raw material cleaning from admixtures, roasting and refining, moisturising by mixing with water and extraction in hot water flow. Before raw materials are moistened, they are supplied to extrusion machine for moisturising to 7-20% and thermal and mechanical treatment under 120-180°C of temperature and 3-12·10⁶ Pa of pressure during 20-50 sec. Outgoing extruded item is mixed with hot water in ratio 1:3 - 1:4 and subject to extraction at 90°C under 0.1-0.2·10⁶ Pa during 10-12 min. Related plant contains silo for raw materials and continuously operated extraction unit, which is equipped with extrusion machine being in front of extraction unit and having reverse elements mounted onto screw at 1/3-1/4 of its length from extruded item output. Extraction machine is represented as pipeline. The front part of it is in the form of blending chamber with opposite injectors connected to hot water supply pipe. The front part is linked with extrusion machine body at the area, where extruded item comes out. Rear part of pipeline is provided with adjustable slide damper. Produced extract contains significant amount of instant aromatic and flavouring agents contained in original product. The extract may be used for high-quality instant coffee or coffee drinks production. Plant design is simple and compacted as compared to other known plants allowing for fast production of extract.

EFFECT: development of effective way of coffee extracts production.

2 cl, 1 dwg