Changes of Antioxidant Compounds and Antioxidant Activities in Portulaca oleracea L.During Different Harvest Time(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Title:: Changes of Antioxidant Compounds and Antioxidant Activities in Portulaca oleracea L.During Different Harvest Time

Author(s):: CHEN Ling1; 2; HE Wei-qiang2; TAO Kun2; CAO Qiao-qiao2; LI Fang-jing2; CAI Chuan-chuan2〖JZ）〗; (1.State Key Laboratory of Chemical Resource Engineering,Beijing 100029；2.Agriculture and Environmental Branch,Jiaxing Vocational Technical College，Jiaxing,Zhejiang 314036)

Keywords:: Portulaca oleracea L.; antioxidant compound; harvest time; antioxidant activity

Abstract:: Through the determination of content of polysaccharides and flavonoids in Portulaca oleracea L.at different harvest time and its water extract on the reduction ability of Ce4+，as well as the hydroxyl radical，antioxidant capacity.The changes of antioxidant compound contents and antioxidant activities in Portulaca oleracea L.during different harvest time were studied.The results showed that the content of active component of Portulaca oleracea L.was August>July>September in the test period.Antioxidant activity of the aqueous extract was August>July>September.There was a positive correlation between Portulaca oleracea L.polysaccharide and total flavonoid content and antioxidant activity. Therefore，the changes of antioxidant activities in Portulaca oleracea L.during different harvest time may be attributed to the content of polysaccharide and flavonoid compounds.In August，the highest content of active component in Portulaca oleracea L.and its antioxidant activity was also the strongest.

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Last Update: 2015-08-07