The application provides a lipid-lowering
sugar-free white tea
probiotic fermentation liquor and a preparation method and application thereof, and belongs to the technical field of
functional food processing. The method comprises the following steps: (1) white tea is crushed and sieved, then sterile
distilled water is added,
water extraction is performed in a boiling water bath, and finally cooling is performed; (2)
probiotic powder is inoculated into the white
tea culture medium obtained in step (1) for
fermentation. The
fermentation method provided by the application can effectively enrich flavonoids and polyphenolic compounds in the white tea water extract without adding glucose, and improve the content of various functional active ingredients such as
hesperetin,
quercetin, epigallocatechin and
cinnamic acid. The
sugar-free fermented white tea prepared by the application has a significantly improved
flavonoid content compared with the
sugar-containing white tea. The fermented white tea significantly reduces the oil and TC content of high-fat HepG2 cells, significantly improves the
antioxidant activity, and reduces the expression amount of
inflammatory factors. The application can provide ideas for further development of lipid-lowering functional foods mainly using white tea as a
raw material, and has good application prospect.