Extraction Process of Green Pigment from Leaves of Arctium lappa L. by Ultrasound Assisted Method and Its Stability Study

摘要

[Objectives] The research aimed to extract green pigment from leaves of Arctium lappa L. and inspect its stability. [Methods] Ultrasound assisted method was used. [Results] Water bath temperature had little impact on green pigment, and Al3+, Cu2+, Mg2+ and Zn2+ in metal ions greatly affected green pigment, while Fe3+ had very little impact on the stability of green pigment. pH did not basically affect green pigment of A. lappa L. [Conclusions] The extraction rate and stability of green pigment from leaves of A. lappa L. were higher, and it was one of materials suitable for extracting green pigment.