Chemical Components of Extract Powder of Organic Cultivated Agaricus blazei and its Antioxidant Activity In Vitro

The fruitbodies of organic cultivated Agricus blazei(Organic Product Certification According to the Japanese Agricultural Standards) were processed into extract powder.The analytic results showed that content of moisture,crude protein,fat,crube fiber,total carbon,reduce sugar,polysaccharide and ash in the extract were 7.56% -7.72% ,25.2% -28.72% ,41.76% -45.3% ,7.39% -7.81% ,23.70% -27.55% and 6.88% -7.2% , respectively.And eighteen kinds of amino acids were checked up,totaled 12.66 mg/100 mg.The contents of essential major and micro elememts of P,Ca,Mg,Zn,Fe,Mn and Cu were 1.86 mg/g,550μg/g,10 600μg/g, 11.2μg/g,38.9μg/g,142μg/g and 7.3μg/g respectively,while the content of heavy metal elememts Cd,As,Pb and Hg were 0.13μg/g,0.20μg/g,0.20μg/g and 0.016μg/g respectively,that were coincided the hygienic standard Green Trade Standards of Importing Exporting Medicinal Plants Preparations(WM/T2-2004)).The antioxidant activity in vitro of were studied,and he results indicated that the extract powder had significantly negative scavenging ability on DPPH·with a dose-response corresponding relationship,and the(EC_(50)) was 0.417 mg/mL Moreover,the extract powder had positive total antioxidant activity(T-AOA) and Ferric reducing antioxidant power (FRAP),and the median effect concentration(EC_(50)) were 0.565 mg/mL and 0.850 mg/mL,respectively.