Xanthine oxidase, α-glucosidase and α-amylase inhibitory activities of the essential oil from : and in silico studies.

Introduction: is a species of herb used as a popular food in Vietnam. Furthermore, the species has been used as a Vietnamese traditional medicine to treat many diseases.

Methods: Chemical constituents in the essential oil from leaves of were determined using GC/MS analysis.

Stability Constant and Potentiometric Sensitivity of Heavy Metal-Organic Fluorescent Compound Complexes: QSPR Models for Prediction and Design of Novel Coumarin-like Ligands.

Industrial wastewater often consists of toxic chemicals and pollutants, which are extremely harmful to the environment. Heavy metals are toxic chemicals and considered one of the major hazards to the aquatic ecosystem. Analytical techniques, such as potentiometric methods, are some of the methods to detect heavy metals in wastewaters.

A new steroidal saponin from the aerial parts of .

A new steroidal saponin, torvoside R (), was isolated along with torvoside Q () and macaoside () from dichloromethane soluble-portion of the aerial parts of . Their chemical structures were elucidated using HRESIMS, 1 D- and 2 D-NMR as well as comparison with those reported in the literature. All isolated compounds (-) exhibited cytotoxicity against SK-LU-1, HepG2, MCF-7, and T24 cancer cell lines with IC values ranging from 14.

study on α-amylase and α-glucosidase inhibitory activities of a new stigmastane-type steroid saponin from the leaves of .

Using various chromatographic separations, four compounds, including one new steroid saponin named vernoamyoside E (), were isolated from the leaves of the Vietnamese medicinal plant Delile (Asteraceae). Their structures were established by spectroscopic methods such as 1D- and 2D-NMR, HR-ESI-MS, and HPLC analysis. The inhibitory activities against α-glucosidase and α-amylase of the isolated compounds from were reported for the first time.