PRODUCTION METHOD OF RECONSTITUTED FLAVOURED TEA Russian patent published in 2009 - IPC A23F3/00 

FIELD: food industry.

SUBSTANCE: knotgrass is sequentially extracted with non-polar liquified gas and drinking water with subsequent obtaining corresponding extracts. Tea preparation waste is mixed with liquid carbon dioxide, extracted and minced along with periodic depressurisation of extraction mixture below carbon dioxide vapour pressure at extraction temperature. Miscella and extraction cake are separated and the latter is suspended in water solution of edible acid. Carbonic acid calcium and magnesium salt and water extract of knotgrass are entered into suspension, moulded, dried to residual humidity 13-15%, cut, impregnated with gas-liquid extract of knotgrass and preliminary separated miscella 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: obtaining product with the fullest usage of tea production waste.