Title: Study on extraction of the total flavonoids in osmanthus fragrans and its antioxidative capacity
Abstract: The optimum condition for extract flavonoids in Osmanthus fragrans lour was discussed by orthogonal test through solvent digesting.The UV spectrophotometer was used to determine the content of total flavonoids of extraction,while DPPH assay method was adopted to determine the antioxidative capacity of extraction.The optimum condition of solvent extracting were obtained as follows : 80% ethanol as extraction solvent soaking time 14 h,extracting temperature 70 ℃ for 3 h,extraction time and material to solvent ratio was 1∶30(W∶V).The mass fraction of flavonoids was 13.54% at optimum condition.As the half effective concentration(EC50)of extraction was 1.15 g/L,Osmanthus fragrans Lour showed strong antioxidant capacity.
Publication Year: 2009
Publication Date: 2009-01-01
Language: en
Type: article
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