2007•Biotechnology(Faisalabad)Requires access
Study on the Optimum Extraction of Total Flavonoids from the Leaves of Grape
Peng Yang
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Abstract
Objective:In order to extract the total flavonoids from the leaves of grape,extraction technology of total flavonoids was studied by orthogonal experiment.Methods:Effects of concentration of extracting solution,temperature,time and solid-liquid ratio on flavonoids contents were investigated.Results:Optimum extraction conditions were determined as follows:45%ethanol as the solvent,solid-liquid ratio 1∶40 and 2 hours immerge extract at 60℃,According to the conditions mentioned above,flavonoids were extracted efficiently and the extraction yield of the flavonoids could reach 5.329mg/g.