PRODUCTION METHOD OF RECONSTITUTED TEA Russian patent published in 2009 - IPC A23F3/40 

FIELD: food industry.

SUBSTANCE: flavoured reconstituted tea production includes hibiscus flowers sequential extraction by liquid carbon dioxide and drinking water with obtaining CO₂-miscella and water extract. Tea production refuses are mixed with fluid carbon dioxide, they are extracted and minced along with periodic depressurisation of extraction mixture below carbon dioxide vapour pressure at extraction temperature. Miscella and extraction cake are separated. The obtained miscella are unified. The extraction cake is dissolved in water solution of edible acid. Calciferous or magnesium salt of carbonic acid and water extract of hibiscus flowers is added to suspension. Then it is formed, dried till residual humidity 13-15%, cut, impregnated with CO₂-miscellas with simultaneous pressure boost. After that depressurisation till atmosphere pressure with simultaneous freezing of absorbed carbon dioxide and its subliming with obtaining of end product are performed.

EFFECT: new product of tea production refuses with complete usage of mentioned refuses.