Identification and stability of flavonoids from asparagus waste

Flavonoids were extracted and purified by AB-8 from the asparagus waste.Three flavonoids,which were diosmetin,quercetin-triglycoside(R2) and rutin,were identified by HPLC-MS/MS.The effects of temperature,pH,oxidant and light on the stability of R2 and rutin were evaluated.The asparagus flavonoids should be stored in the neutral solution without antioxidant and light.