BARNYARD GRASS EXTRACT, AND PREPARATION METHOD THEREFOR AND APPLICATION THEREOF

摘要

A barnyard grass extract, and a preparation method therefor and an application thereof. The barnyard grass extract is a small molecule peptide extract, the barnyard grass polysaccharide content of the extract is not lower than 30%, and the total anti-oxidant capacity of the extract is 20.894-18.462 U/mL. The preparation method comprises: drying the stem of barnyard grass in the air, crushing the stem, sealing and fermenting in a water-free and oil-free environment, then adding water to soak for a period of time, centrifuging, obtaining a supernatant liquid, and filtering residues; repeatedly adding water to soak, centrifuging, and obtaining the supernatant liquid; merging the supernatant liquid and then obtaining a crude extract liquid; freezing the crude extract liquid in an environment below zero Celsius degree; and when an ice layer is formed on the surface of the crude extract liquid, taking out the ice layer to obtain a concentrated crude extract liquid until obtaining the barnyard grass extract in the form of powder. An application of an barnyard grass extract in the preparation of a medication and/or a healthcare product and/or a food for detoxification. An application of an barnyard grass extract in the preparation of a fruit and vegetable pesticide residue degradation agent.