Notice of RetractionStudy on Fingerprint Spectrums of Officinal Portion from Isatis indigotica Fort

Notice of Retraction

After careful and considered review of the content of this paper by a duly constituted expert committee, this paper has been found to be in violation of IEEE´s Publication Principles.

We hereby retract the content of this paper. Reasonable effort should be made to remove all past references to this paper.

The presenting author of this paper has the option to appeal this decision by contacting TPII@ieee.org.

[Objective] The aim was to study HPLC fingerprint spectrums of officinal portion (root and leaf) from Isatis indigotica Fort. [Method] The high performance liquid chromatography fingerprint spectrum (HPLC-FPS) was adopted to analyze and compare the fingerprint spectrum of root and leaf from different Isatis indigotica Fort sources. [Result] HPLC fingerprint spectrums of different sources of the root of Isatis indigotica Fort and the leaf of Isatis indigotica Fort was determined and 12 common fingerprint peaks was ascertained. Similarities of the fingerprint spectrums were compared and showed the quality difference for the different plants. [Conclusion] The Institute established Isatis root and leaves of Isatis fingerprint can be used to evaluate the quality of medicinal parts .Proper method for the determination of HPLC fingerprint spectrum of the root and leaf of Isatis indigotica Fort was established and up to the technical demand for TCM fingerprint spectrums. The study provided scientific basis and research method for evaluating quality of officinal portion from Isatis indigotica Fort.