| 摘要 |
PURPOSE: To obtain the subject antioxidant, containing an extract separated from the pericarp of a mangosteen as an active ingredient, excellent in both safety and antioxidant activities and having an extremely low production cost due to the availability of the raw material at a low cost. CONSTITUTION: This antioxidant contains an extract separated from the pericarp of a mangosteen as an active ingredient. The active ingredient is obtained by pulverizing the dried mangosteen, then carrying out the cold leaching with methanol, subsequently partitioning and extracting the methanol extraction essence with acetic acid and water at 1:1 ratio, then treating a part passed into the ethyl acetate by a silica gel chromatography, eluting the resultant extract with n-hexane-ethyl acetate (at 3:1 ratio) and thereby providing the extract as a fraction containing γ-mangostin of the formula. |
