Publications by authors named "Van-Hung Hoang"

Unlabelled: This research aimed to assess the biological characteristics of both submerged culture mycelium and artificial basidioma of NTH-PL4. The extraction yield from the basidioma surpassed that of the mycelium. The use of hot water extract resulted in the highest total carbohydrate content, predominantly found in the basidioma.

View Article and Find Full Text PDF
Article Synopsis
  • - The study focused on isolating compounds from the leaves of Ligustrum robustum and evaluating their anti-cancer effects, particularly against liver cancer cells (HepG2).
  • - Seven compounds were isolated from the plant, including four lignans and three phenolic derivatives, with isocubein and 4-(2-acetoxyethyl)phenol showing the strongest inhibitory effects on cell growth and tumor development.
  • - This research is the first to report the activity of L. robustum extracts and isolated compounds on HepG2 cells, paving the way for future studies in liver cancer treatment options.
View Article and Find Full Text PDF
Article Synopsis
  • The study investigated the effectiveness of CaFeO nanoparticles as a catalyst in the ozonation process to degrade Acid Orange II (AOII) in water, comparing it to ozone treatment alone across various pH levels and concentrations.
  • Results showed that the CaFeO/O system outperformed ozone alone in color removal and total organic carbon (TOC) degradation, particularly at pH 9 with optimal catalyst dosage.
  • The degradation mechanism followed pseudo-first-order kinetics, indicating the process became more efficient as pH increased, although higher initial AOII concentrations led to reduced efficacy in TOC removal.
View Article and Find Full Text PDF

C21 steroidal glycosides are a group of natural compounds with biological activities such as anti-cancer, anti-microbial, and anti-viral properties. In this study, we isolated and determined the structure of a new C21 steroidal glycoside, named Marsdenialongise A from Marsdenia longipes W.T.

View Article and Find Full Text PDF

We report a combined experimental and theoretical study on the effect of autoionizing resonances in time-resolved photoelectron spectroscopy. The coherent excitation of N_{2} by ∼14.15  eV extreme-ultraviolet photons prepares a superposition of three dominant adjacent vibrational levels (v^{'}=14-16) in the valence b^{'} ^{1}Σ_{u}^{+} state, which are probed by the absorption of two or three near-infrared photons (800 nm).

View Article and Find Full Text PDF

Using extracts from herbs for silver nanoparticle synthesis is attracting attention for its anticancer activity. Ardisia gigantifolia is a herb used in traditional Chinese medicine for treating stomach ailments, and some compounds isolated from this plant exhibit the inhibitory activity against different cancer cells. However, the synthesis of silver nanoparticle using extract of Ardisia gigantiflia leaves and their anti-cancer activity was not reported.

View Article and Find Full Text PDF

We present a detailed theoretical study of the odd-even harmonics generated from the polar molecule CO by the method based on numerically solving the time-dependent Schrödinger equation within the single-active-electron approximation. First, we reproduce the pure even harmonic generation of CO predicted theoretically by Hu et al. using the time-dependent density functional theory [H.

View Article and Find Full Text PDF

The conductive properties of polypyrrole chains doped with ClO or MoO anions and the existence of polarons and bipolarons in these doped polypyrrole chains were investigated by performing computational calculations based on density functional theory (DFT). Doping with these anions was found to decrease the band gap of the polypyrrole. Theoretical calculations revealed that changing the type of oxidative agent applied does not affect the conversion of polypyrrole into a conducting polymer, but the conductivity of the doped polypyrrole does depend on the ratio of oxidant to polypyrrole.

View Article and Find Full Text PDF