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A flavonol glycoside (1) and a steroidal saponin (2), along with beta-sitosterol and beta-sitosterol-D-glucoside, were isolated from the roots of Smilax lanceaefolia Roxb. Mineral contents were determined using the atomic absorption spectrophotometer and the total antioxidant activity was determined using the 1,1-diphenyl-2-picrylhydrazyl (DPPH) free radical scavenging method.

A naturally occurring guaianolide sesquiterpene lactone (1), along with 10 known compounds (2-11), was isolated from the chloroform extract of the dried rhizomes of Curcuma leucorrhiza Roxb. Their structures were elucidated on the basis of spectroscopic studies and X-ray crystallographic analysis. Compound 1 expressed antioxidant activity. The taxonomic status of C. leucorrhiza is briefly discussed based on the chemotaxonomic significance of these findings.