The invention discloses
streptomyces lavendulae of which the classification is named as
Streptomyces lavendulae UN-8, the preservation number is CCTCC NO: M 2015512, the preservation date is September 6th, 2015, and the preservation unit is China Center for Type Culture Collection. The
Streptomyces lavendulae UN-8 has application in the aspects of fermenting and preparing alpha-
glucosidase inhibitor. A certain amount of
fermentation liquor of the alpha-
glucosidase inhibitor is accumulated through strain
fermentation, bactofugation is conducted, soluble
starch,
protein and part
pigment are removed through
ultrafiltration, decoloration is conducted through
activated carbon,
nanofiltration concentration is conducted, most inorganic salt micromolecules are removed, adsorption and
desorption are conducted through resin, decompression
drying is conducted, and an alpha-
glucosidase inhibitor refined product is obtained. The alpha-
glucosidase inhibitor can strongly inhibit alpha-glucosidase, and IC50 of the alpha-
glucosidase inhibitor is 321 times that of commercially available alpha-
glucosidase inhibitor acarbose; the obvious improvement action on forming of postprandial hyperglycemia inside an animal is achieved, the effect is equal to that of the
acarbose, and the alpha-glucosidase inhibitor can be used for preparing drugs for treating diabetes or functional foods.