A method for preparing simultaneously from Silkworm imino sugar and flavonoids extract

The present invention discloses a process for the preparation of imino sugar and flavonoids extract from silkworm excrement simultaneously, the method comprising the steps of: (1) A silkworm excrement diluted with acidic water or an acidic alcohol solvent extraction, the extract was filtered and concentrated; (2) take the cation exchange resin, the concentrate was loaded onto a step (1) was eluted with water and acidic water, acidic water and the water eluent was collected and concentrated, and then eluted with dilute aqueous ammonia solution, a dilute collection aqueous ammonia eluent; (3) the step (2) resulting acidic aqueous solution and water elution was concentrated, purified by column chromatography on a polyamide, the samples were washed with water, ethanol elution, ethanol eluate, eluted It was concentrated to dryness to give flavonoid extract. (4) The step (2) obtained in dilute aqueous ammonia eluent was concentrated to neutral pH, purified through an alumina column, loaded and eluted with ethanol, dried eluate was concentrated to give imino sugar extract . Manufactured by the method of high imino sugars and flavonoids extract content and a simple process and low cost.