title: [Technique of macroporous resin for tartary buckwheat total flavonoids].
abstract: OBJECTIVE
  To investigatre appropriate macroporous resins and the optimal technological parameters of the purification process of tartary buckwheat total flavonoids.
  
  
  METHODS
  Static and dynamic adsorption-desorption methods were adopted, and evaluated for separating efficiency by macroporous resins absorption rates, desorption rates.
  
  
  RESULTS
  The DM -2 macroporous resin had the best separating efficiency. The best absorbed condition is H2O as solvent of extracts, diameter vs height: 1: 10, pH 3 - 4, absorption power: 3.0 mL x min(-1). The optimum adsorption condition is the volume of 50% ethanol 80 mL (approximately 5 BV (resin bed volume) as eluting solvent, pH 8, the desorption power: 3.0 mL x min(-1).
  
  
  CONCLUSIONS
  This technology is simple, quick and cost-effective, which is suitable for industrialization.
authors.affiliation: College of Food Science and Engineering, Northwest Sci-Tech University of Agriculture and Forestry, Yangling 712100, China. hheather@etang.com
authors.forename: Zhi-Feng
authors.initials: ZF
authors.lastname: Yu
authors.forename: Min
authors.initials: M
authors.lastname: Wang
mesh_terms: D019612:Fagopyrum / Q000737:chemistry*; D005419:Flavonoids / Q000302:isolation & purification*; D010946:Plants, Medicinal / Q000737:chemistry*; D012117:Resins, Synthetic / Q000737:chemistry*; D012639:Seeds / Q000737:chemistry; D013678:Technology, Pharmaceutical / Q000379:methods*
chemical_list: D005419:Flavonoids; D012117:Resins, Synthetic