Quality detection method for roots of Japanese bananas

The invention discloses a quality detection method for roots of Japanese bananas. The method comprises the following steps: qualitatively identifying the medicinal material of the root of Japanese banana by using a thin layer chromatography and determining the content of the medicinal material of the root of Japanese banana by using a high performance liquid chromatography. And the thin-layer identification of the plantain roots is investigated, so that the defects in the prior art are overcome. According to the method, the content determination of lupenone as a main component of the roots of Japanese bananas is investigated, the method for determining the content of lupenone in the roots of Japanese bananas by HPLC (High Performance Liquid Chromatography) is established, and methodological investigation results show that the precision, the stability, the reproducibility and the sample recovery rate of the method all meet the requirements. The method is simple to operate, low in requirement on instruments and