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

FIELD: food products.

SUBSTANCE: bur grass root is sequentially extracted with liquid carbon dioxide and drinking water to obtain CO₂-miscella and aqueous extract. Tea production waste is mixed with non-polar liquified gas, extracted and minced along with periodic depressurisation of extraction mixture below extracting agent vapour pressure at extraction temperature. Miscella and extraction cake are separated. Extraction cake is suspended in water solution of edible acid; carbonic acid calcium and magnesium salt and water extract of bur grass root are entered into suspension. Then it is moulded, dried to residual humidity 13-15%, cut, impregnated with CO₂-miscella of bur grass root and gas-liquid extract of tea waste with simultaneous pressure boost. It is followed by depressurisation to atmosphere pressure with simultaneous freezing of absorbed carbon dioxide and subliming it with obtaining end product.

EFFECT: producing reconstituted flavoured tea from tea production waste with the fullest usage of mentioned waste.