PREPARATION METHOD OF FLAVOURED TEA Russian patent published in 2009 - IPC A23F3/00 A23F3/40 

FIELD: food industry.

SUBSTANCE: borage flowers are 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; the latter is suspended in water solution of edible acid; carbonic acid calcium and magnesium salt and borage flowers water extract are entered into suspension, moulded, dried to residual humidity 13-15%. It is followed by cutting, impregnating with gas-liquid extract of borage flowers and preliminary separated miscella with simultaneous pressure boost, depressurisation to atmosphere pressure with simultaneous freezing of absorbed carbon dioxide and subliming it with obtaining end product.

EFFECT: obtaining a new product in form of reconstituted flavoured tea from tea production waste with the fullest usage of mentioned waste.