The invention relates to
ginkgo leaf tea and a preparation method thereof. The method comprises the following steps of: (1)
cutting ginkgo leaves into
ginkgo leaf threads, extracting ginkgo leaves with
alcohol, preparing an
alcohol filtrate, and concentrating; (2)
grinding chrysanthemum, fiveleaf
gynostemma herb and
green tea into coarse
powder, mixing coarse
powder, and sterilizing; and (3) fully stirring and uniformly mixing a concentrated solution obtained in the step (1) and mixed
powder,
drying, sieving, and
drying coarse particles and powder to obtain ginkgo leaf tea. In the tea components, fiveleaf
gynostemma herb contains a plurality of gypenosides, and has the effects of lowering TC (
Total Cholesterol) and TG (
Triglyceride); ginkgo leaf contains flavone, and has the effect of lowering TC; fiveleaf
gynostemma herb and ginkgo leaf co-act with each other, so that blood fat is lowered; chrysanthemum can be used for increasing high-density
lipoprotein, lowering serum cholesterase and
triglyceride acid, playing a certain role in adjusting blood fat, and adjusting
flavor appropriately simultaneously; tea-
catechin in
green tea is used for lowering serum cholesterase level by increasing the
excretion of lipoid substances; and the four types of raw materials act in a synergistic way, so that a very good effect of lowering blood fat is achieved.