aloe-emodin
1.METHODS TLC was used to identify curcumin, rhein, emodin, chrysophanol and aloe-emodin.
3.In this article first reports that main active constituents in Aloe vera Chinensis(Haw) Berger from Zhanjiang Local Xuwen Caunty Dayin Village. By chemical and spectral analyses (MS.1H-NMR、IR、UV) were identified as Aloe-emodin).
4.The content of aloe-emodin, rhein, emodin, chrysophanoland physcion in 3 and 4 year old cultivated Rheum tanguticum, which grew in Qinghai in different months of it growth season, were determined by high performance liquid chromatography.

