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

FIELD: food products.

SUBSTANCE: grape leaves are consequently extracted with liquid carbon dioxide and drinking water to obtain CO₂-miscella and water extract. Tea waste products are mixed with nonpolar liquefied gas, extracted and minced with repeating pressure release in the extraction mixture to the pressure lower of extract saturated vapour at extracting temperature. Extract and extraction cake are separated. The latter is dissolved in water solution of edible acid. Calciferous or magnesium salt of carbonic acid and water extract of door-weed is added to suspension. Then it is formed, dried till residual humidity 13-15%, cut, and impregnated with gas-liquid extract of grape leaves fruits and previously separated miscella 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: complete utilisation of tea refuses for foodstuffs production.