Rhodiola rosea and glycyrrhizin composite fermentation broth, product containing rhodiola rosea and glycyrrhizin composite fermentation broth, and preparation and application thereof

The invention discloses rhodiola rosea and glycyrrhizin compound fermentation liquor, a product containing the rhodiola rosea and glycyrrhizin compound fermentation liquor, and preparation and application of the rhodiola rosea and glycyrrhizin compound fermentation liquor. The preparation method of the rhodiola rosea and glabridin compound fermentation liquor comprises the following steps: mixing dried rhodiola rosea, glabridin and water to prepare a fermentation substrate; lactobacillus is inoculated into the fermentation substrate, fermentation culture and sterilization are carried out, and rhodiola and glycyrrhizin compound fermentation liquor is prepared; wherein the mass ratio of the dried rhodiola rosea to the glabridin is (50-300): 1; the lactobacillus comprises at least one of lactobacillus acidophilus, lactobacillus acidophilus and lactobacillus casei. The rhodiola rosea and glabridin compound fermentation liquor prepared by the invention has the effects of resisting oxidation, relieving skin, whiten