The invention discloses a method for preparing natural
polyphenol-concentrated sour
pear juice and a method for preparing a sour
pear drink. The natural
polyphenol-concentrated sour
pear juice is prepared from sour pears through cleaning, crushing, pressing, enzymolysis, clarification,
ultrafiltration, low-temperature vacuum concentration, and the like. The soluble
solid content of the product is more than or equal to 60 DEG
Brix; the total
phenol content is more than or equal to 500mg / 100g; and the
arbutin content is more than or equal to 160mg / 100g. The sour pear drink is prepared from the sour
pear juice and water serving as main raw materials through mixing, degassing, homogenizing, sterilizing, and the like; the soluble
solid content of the sour pear drink is between 8 and 25 DEG
Brix; and the total
phenol content is between 30 and 150mg / 100g. Compared with the traditional pear drinks, the sour pear drink contains more
polyphenol component, overcomes bad
mouthfeel of the polyphenol without sweeteners and sour agents, and is a natural functional component-enriched drink. Due to the adoption of
drying, extracting, centrifuging, and concentrating processes, the polyphenol is extracted from the sour pear residue, and the polyphenol loss is reduced.