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

FIELD: food products.

SUBSTANCE: blueberry leaves are consequently extracted with liquid carbon dioxide and drinking water to obtain CO₂-miscella and water extract. Waste tea products are mixed with nonpolar liquefied gas. Then they are 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 blueberry leaves is added to suspension. It is formed, dried to the residual moisture of 13-15%, cut, and soaked with CO₂-miscella of blueberry leaves and gas-liquid extract of tea waste products with simultaneous pressure increase. After that depressurisation till atmosphere pressure with simultaneous freezing of absorbed carbon dioxide and its subliming with obtaining of end product are performed.

EFFECT: production of reconstituted flavoured tea out of tea production refuses with complete usage of mentioned refuses.