Hongmei Chen
Abstract
An orthogonal test table L9(43) was used with the factors of extracting time,temperature,ethanol concentration and the ratio of solid to liquid. The content of total flavones was determined by spectrophotometry. The optimum technique was: 70 % ETOH as extracting solvent; temperature was 80 ℃; time was 3 h and stock ratio was 1∶20.
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An orthogonal test table L9(43) was used with the factors of extracting time,temperature,ethanol concentration and the ratio of solid to liquid. The content of total flavones was determined by spectrophotometry. The optimum technique was: 70 % ETOH as extracting solvent; temperature was 80 ℃; time was 3 h and stock ratio was 1∶20.
Key concepts: Flavones, Chromatography, Solvent, Chemistry, Extraction (chemistry), Spectrophotometry, Ethanol, Organic chemistry