title: [Determination of maleic hydrazide residues and its influence on the quality of Atractylodes macrocephala].
abstract: OBJECTIVE
  To determine maleic hydrazide (MH) residues and discuss its influence on the quality of Atractylodes macrocephala.
  
  
  METHODS
  At the bud stage, A. macrocephala different concentration of MH. Then MH residues,the contents of sugar and lactone were determined by HPLC and UV. The quality of A. macrocephala was comprehensively evaluated by independent sample t test and principal component analysis.
  
  
  RESULTS
  The range of MH residues was 0.3-2.2 mg/kg. The results of independent sample t test revealed that the trend of the contents of lactone was low-high-low with the increase of MH, and the effect of MH on the content of sugar was barely obvious. Meanwhile, principal component analysis showed that comprehensive evaluation on the quality of A. macrocephala was the best when MH with 75 or 100 times water was applied.
  
  
  CONCLUSIONS
  Proper concentration MH is applied to ensure low concentration MH residues and improve yield and quality of A. macrocephala.
authors: Chun-rong
authors: CR
authors: Wang
authors: Dan-ping
authors: DP
authors: Zheng
authors: Peng
authors: P
authors: Jiang
authors: Jian-feng
authors: JF
authors: Wu
authors: Ying-kun
authors: YK
authors: Liu
authors: Wei
authors: W
authors: Tian
mesh_terms: D031174:Atractylodes / Q000737:chemistry* / Q000187:drug effects / Q000254:growth & development; D002241:Carbohydrates / Q000032:analysis*; D002851:Chromatography, High Pressure Liquid; D007783:Lactones / Q000032:analysis*; D008300:Maleic Hydrazide / Q000032:analysis* / Q000737:chemistry / Q000494:pharmacology; D010573:Pesticide Residues / Q000032:analysis; D010937:Plant Growth Regulators / Q000032:analysis* / Q000737:chemistry / Q000494:pharmacology; D025341:Principal Component Analysis; D011786:Quality Control; D027343:Rhizome / Q000737:chemistry / Q000187:drug effects / Q000254:growth & development
chemical_list: D002241:Carbohydrates; D007783:Lactones; D010573:Pesticide Residues; D010937:Plant Growth Regulators; D008300:Maleic Hydrazide