• 专利标题:   Extracting rebaudioside A from Stevia rebaudiana comprises extracting dry leaves of Stevia rebaudiana to obtain an extract, applying the extract to a separation column packed with molecularly imprinted composite materials and eluting.
  • 专利号:   CN112500440-A, CN112500440-B
  • 发明人:   XING F, XING W, WANG S
  • 专利权人:   BENGBU HUADONG BIOLOGICAL TECHNOLOGY CO
  • 国际专利分类:   B01D015/08, B01J020/26, B01J020/30, C07H001/08, C07H015/256
  • 专利详细信息:   CN112500440-A 16 Mar 2021 C07H-001/08 202131 Pages: 8 Chinese
  • 申请详细信息:   CN112500440-A CN11348322 26 Nov 2020
  • 优先权号:   CN11348322

▎ 摘  要

NOVELTY - Extracting rebaudioside A from Stevia rebaudiana comprises extracting the dry leaves of stevia to obtain an extract, applying the extract to a separation column packed with molecularly imprinted composite materials, after the eluent is eluted to obtain the pure product of rebaudioside A, the molecularly imprinted composite material includes a graphene carrier and a molecularly imprinted polymer, the molecularly imprinted polymer uses rebaudioside A as a template molecule with acrylamide as the functional monomer, using ethylene glycol dimethacrylate as crosslinking agent and acetonitrile as pore-forming agent. USE - The method is useful for extracting rebaudioside A from Stevia rebaudiana. ADVANTAGE - The method is simple, has strong operability, and high product purity and yield. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for extracting rebaudioside A from Stevia rebaudianacomprising extracting dry leaves to obtain the leach liquor specifically comprising crushing the Stevia rebaudiana dry leaf, adding de-ionized water according to material liquid ratio of 1:4-6, ultrasonically extracting for 10-20 minutes at a power of 300-400 W and filtering to obtain the leaching liquor.