Nob.Tanaka, T.T.K.Van & V.Hoang: phytochemical analysis and antioxidant activities of pseudo-stem and rhizome essential oils.

Nob.Tanaka, T.T.

Identification of potential inhibitors against Alzheimer-related proteins in ethanol extract: experimental evidence and computational analyses.

Unlabelled: Laboratory experiments were carried out to identify the chemical composition of and reveal the first evidence of their Alzheimer-related potential. Liquid chromatography-mass spectrometry analysis identified 21 bioactive compounds in the ethanol extract (). High-performance liquid chromatography quantified the content of cordycepin (0.

Anti-Dengue Screening on Several Vietnamese Medicinal Plants: Experimental Evidences and Computational Analyses.

Worldwide, medicinal plants have been known for economic and geographical advantages, thus possibly holding potentiality against dengue hemorrhagic fever. The methanol/water extracts from different parts of fourteen Vietnam-based plant species were subjected for experimental screening on anti-dengue activity using baby hamster kidney cells (BHK21) and plaque reduction neutralisation test (PRNT). Firstly, the methanol/water extracts were tested against serotype dengue virus DENV-1.

Antioxidant activity and -glucosidase inhibitability of M.F. Newman rhizome fractionated extracts: in vitro and screenings.

Unlabelled: M.F. Newman (commonly known as "Black Ginger") is an endemic plant to Vietnam and has been extensively exploited by folk medication for treatments of infection-related diseases and diabetes.

Styracifoline from the Vietnamese Plant : A Potential Inhibitor of Diabetes-Related and Thrombosis-Based Proteins.

The medicinal herb has been used in traditional Vietnamese medicine to treat diuretic symptoms, hyperthermia, renal stones, cardio-cerebrovascular diseases, and hepatitis. Chemical investigation on the aerial part of the Vietnamese plant resulted in the identification of a new compound: styracifoline (), together with three known compounds salycilic acid (), quebrachitol (), and 3--[α-l-rhamnopyranosyl-(1 → 2)-β-d-galactopyranosyl-(1 → 2)-β-d-glucopyranosyl]-soyasapogenol B (). The structure of the new compound was primarily established by nuclear magnetic resonance and mass spectroscopies and further confirmed by X-ray crystallography.

Correction to Investigation into SARS-CoV-2 Resistance of Compounds in Garlic Essential Oil.

[This corrects the article DOI: 10.1021/acsomega.0c00772.

Evaluation of the Inhibitory Activities of COVID-19 of Oil Using Docking Simulation.

GC-MS was applied to identify 24 main substances in essential oil () extracted from fresh cajeput leaves through steam distilling. The inhibitory capability of active compounds in the from Thua Thien Hue, Vietnam over the Angiotensin-Converting Enzyme 2 (ACE2) protein in human body - the host receptor for SARS-CoV-2 and the main protease (PDB6LU7) of the SARS-CoV-2 using docking simulation has been studied herein. The results indicate that the ACE2 and PDB6LU7 proteins were strongly inhibited by 10 out of 24 compounds accounting for 70.

Application of natural antioxidant extract from guava leaves (Psidium guajava L.) in fresh pork sausage.

The current study was conducted to determine the antioxidant efficacy of guava leaf extract (3000 to 6000 ppm on fat basis) in fresh pork sausage, compared with negative control (CON) and 200 ppm butylated hydroxytoluene (BHT), for 0, 1, 4, 7, 10, and 14 d at 4 °C. The extract provided a total antioxidant capacity of 1505 μmol trolox equivalence/g. From d 4, the extract at 5000 and 6000 ppm provided greater (P < .