The invention discloses an extraction method and application of guava functional components for preventing and treating piglet
diarrhea. The extraction method comprises the following steps: performing
vacuum drying on guava leaves at 45-60 DEG C, and crushing; mixing with an
ethanol-water mixed
solvent, and carrying out ultrasonic-assisted extraction; filtering the extracting solution, concentrating under reduced pressure, and freeze-
drying to obtain the guava leaf extract; according to the scheme, comprehensive prevention and control of
bacterial diarrhea are achieved, phenolic compounds in GE directly inhibit growth of ETEC and
salmonella, compound enzymes make up the defect that piglet digestive enzymes are insufficient to reduce intestinal burden, and
traditional Chinese medicine compounds enhance the intestinal convergence function; the natural
plant extract, the
traditional Chinese medicine compound and the food-grade
enzyme preparation are taken as core components, so that the problems of
drug resistance and residue of
antibiotics are avoided; ultrasonic-assisted
ethanol-water mixed
solvent extraction is adopted, and a
freeze drying technology is combined, so that the yield of phenolic compounds in GE is increased, the
impurity content is reduced, and the
raw material cost and the feed
palatability influence are reduced.