title: [Study of microwave-assisted extraction on total flavones content in Hibiscus manihot L. flower].
abstract: OBJECTIVE
  To study the extraction process of the total flavones content in Hibiscus manihot L. flower.
  
  
  METHODS
  it was investigated that effect of ethanol concentration, extracting time, power of microwave oven and Solid/Liquid ratio (g/mL) on total flavones content using the orthogonal design.
  
  
  RESULTS
  The optimum microwave-assisted extraction conditions included: ethanol concentration of 70%, extraction time of 30s, the power of microwave oven of 360w, solid/liquid ratio of 1 : 50 (g/ml) and granularity < or = 80 pore.
  
  
  CONCLUSIONS
  There are broad possibilities for the extraction of the total flavones content from Hibiscus manihot L flower using Microwave-assisted technigue.
authors.affiliation: College of Biological Science and Engineering, Hebei University of Science and Technology, Shijiazhuang 050018, China.)
authors.forename: Qiu
authors.initials: Q
authors.lastname: Yan
mesh_terms: D004365:Drugs, Chinese Herbal / Q000032:analysis / Q000302:isolation & purification*; D000431:Ethanol / Q000008:administration & dosage; D047309:Flavones / Q000032:analysis / Q000302:isolation & purification*; D035264:Flowers / Q000737:chemistry; D031584:Hibiscus / Q000737:chemistry*; D008872:Microwaves; D010316:Particle Size; D010946:Plants, Medicinal / Q000737:chemistry*; D012997:Solvents; D013678:Technology, Pharmaceutical / Q000379:methods; D013997:Time Factors
chemical_list: D004365:Drugs, Chinese Herbal; D047309:Flavones; D012997:Solvents; D000431:Ethanol