The invention discloses a method for preparing tea essence from
Lycium ruthenicum leaves and Chinese red date peels and belongs to the technical field of health drinks. According to the method, the
Lycium ruthenicum leaves are dried and crushed,
alcohol with the concentration being 60%-80% is added, the liquid-to-
solid ratio is 10 ml / g,
microwave-assisted extraction is performed for 10 min at the temperature of 55-75 DEG C, filtrate is obtained through
filtration, filter residues are extracted again, filtrate obtained after first
filtration and filtrate obtained after second
filtration are merged,
alcohol is supplemented until the concentration is 85%, the filtrate is centrifuged for 10 min at the speed of 3,500 r / min, and a liquid supernatant is obtained; the Chinese red date peels are dried and crushed,
alcohol with the concentration being 50%-70% is added, the liquid-to-
solid ratio is 10 ml / g,
microwave-assisted extraction is performed for 10 min at the temperature of 65-85 DEG C, filtrate is obtained through filtration, filter residues are extracted again, filtrate obtained after first filtration and filtrate obtained after second filtration are merged, alcohol is supplemented until the concentration is 75%, the filtrate is centrifuged for 10 min at the speed of 3,500 r / min, and a liquid supernatant is obtained; the
Lycium ruthenicum leaf liquid supernatant and the Chinese red date peel liquid supernatant are mixed in the ratio being 1:1, a certain proportion of
maltodextrin and a certain proportion of beta-
cyclodextrin are added, and a finished product is obtained after
spray drying. The prepared tea essence can effectively relieve hypertension,
hyperlipidemia and hyperglycemia symptoms of middle-aged and old-
aged patients and has good
efficacy of preventing the cardiovascular
disease.