RESUMEN
Objective To optimize enrichment and purification technology of total flavonoids from seed shell of Scutellaria baicalensis by macroporous resin.Methods Scutellarin was selected as the index,and its content was determined by HPLC.Types of macroporous resin were optimized by static adsorption elution tests.Enrichment and purification technology was investigated by orthogonal test and single-factor tests.Results AB-8 macroporous resin showed better effects than others.Optimum purification condition was as follows:sample concentration was 30.0 g · L-1,the best adsorption capacity was 0.3 g· g-1,adsorption velocity was 1.0 mL· min-1,diameter-height ratio was 1 ∶ 3,the eluting agent was 20 BV purified water,with the total polyphenols being desorbed by 5 BV of 70％ ethanol Conclusion The technology is scientific,simple and highly reproducible.It can be applied to enrich and purify total flavonoids from seed shell of Scutellaria baicalensis by macroporous resin.
RESUMEN
OBJECTIVE:To optimize the extract technology of the total Favonoids from the fruits of Polygonum viviparum L.METHODS: The content of Flavonoids was computed with rutin as standard substance, and the influence of different factors and levels on the extract technology were investigated by means of simple factor experiment and orthogonal experiment. RESULTS: The optimum extraction technology was as follows: with water-bath temperature at 80℃, the ratio of liquid to solid material at 8∶1 and the concentration of ethanol at 50%, reflux extracting total Favonoids twice(1 h at each time). Under this condition, the content of total Flavonoids was 9.6%. CONCLUSION: The extraction method is appropriate, simple and feasible, and it provided theoretic basis for the production of this product.