Identification and -glucosidase inhibitory activity evaluation of two new coumarins derived from J. R. Drumm.

Five coumarins were isolated from the heartwood of , which included two newly discovered compounds, namely 11-hydroxypopulene E () and mansorin D (), along with three previously identified compounds. The structures were determined through the utilisation of comprehensive spectroscopic data, ECD calculations, and a thorough comparison with existing literature data. The -glucosidase inhibitory activities of all isolated compounds were assessed in yeast.

Tinctoric acid A-B, two new hopan-type triterpenoids from the Vietnamese lichen, (Despr. ex Nyl.) hale with α-glucosidase inhibitory activity.

Two new hopan-type triterpenoids, namely tinctoric acid A-B (), were isolated from the lichen (Despr. ex Nyl.) Hale.

Tinctorin, a new spiroterpenoid from the lichen (Despr. ex Nyl.) Hale growing in Vietnam.

A new spiroterpenoid, namely tinctorin (), along with one known compound, norreticulatin (), were isolated from the lichen (Despr. ex Nyl.) Hale.

α-Glucosidase inhibition of sesquiterpenoids from the heartwood of Mansonia gagei.

Nine undescribed sesquiterpenoids, along with ten known compounds, were isolated from the ethyl acetate extract of Mansonia gagei heartwood. Their structures were determined by spectroscopic data analysis (FTIR, 1D, 2D NMR, and HRESIMS), and their absolute configurations were established by ECD calculation. The isolated compounds were evaluated for their inhibitory effect against α-glucosidase from yeast.

Differences in the Microbiological Profile of Raw and Pasteurized Breastmilk from Hospital and Community-Based Donors at the First Human Milk Bank in Vietnam.

Background: Microbiological quality is one of the key safety standards in human milk bank (HMB) operations. We describe the profiles of bacteria in donor human milk (DHM) before and after the pasteurization of samples collected from breastfeeding women in the hospital and from the community in the first HMB in Vietnam. Methods: Data were collected between February 2017 and January 2022 from an online HMB monitoring system.

E-Cigarette Use among University Students from One University in Hanoi, Vietnam, and Associated Factors.

Objective: Describe the use of e-cigarettes and factors associated with e-cigarette use among university students from one university in Vietnam in 2021.

Methods: This cross-sectional study was conducted with a total of 554 full-time undergraduate students recruiting for the study. Data was collected using a structured self-administered questionnaire.

Gagones A-F: Six prenylated chalcones from the heartwood of Mansonia gagei.

Six undescribed prenylated chalcones gagones A-F were isolated from the acetone fraction of Mansonia gagei heartwood. Their structures were unambiguously established based on spectroscopic analysis (HRESIMS, 1D and 2D NMR), as well as comparison to literature data. Their absolute configurations were elucidated using DP4 and electronic circular dichroism calculations.

A new neolignan and a new phenolic acid from the heartwood of J.R. Drumm.

One new neolignan () and one new phenolic compound (), together with four known compounds (- were isolated from the heartwood of . Their structures were elucidated by extensive spectroscopic analyses, including 1D and 2D NMR and HRESIMS. The absolute configuration of was established based on the DP4+ protocol and by comparison of experimental and calculated ECD spectra.

Impacts of effluent from different livestock farm types (pig, cow, and poultry) on surrounding water quality: a comprehensive assessment using individual parameter evaluation method and water quality indices.

Water pollution within and nearby different livestock farm types was assessed comprehensively for the first time in Vietnam. The samples of wastewater, ground water, and surface water were collected from 130 pig farms, 80 poultry farms, and 40 cow farms. Water quality was first assessed by individual parameter evaluation method in which measured values of water quality parameters were compared with the permissible limits in the national technical regulations on livestock's effluent (QCVN 62), surface water quality, and ground water quality.

Trends and Dynamics in the First Four Years of Operation of the First Human Milk Bank in Vietnam.

Background: Since 1979, the World Health Organization (WHO) and the United Nations Children's Fund (UNICEF) have recommended the use of pasteurized human milk from a human milk bank (HMB) to feed low birthweight (LBW) and preterm newborns as the 'first alternative' when mothers are unable to provide their own milk. However, they have not issued any guidelines for the safe establishment and operation of an HMB. This gap contributes to the demand for gathering experiences from HMB networks, especially those from lower-middle income countries.

Quantitative Analysis of Colistin-Resistant in Retail Meat from Local Vietnamese Markets.

The spread of drug-resistant bacteria via food has contributed to the dissemination of resistant bacteria among humans. However, the status of food contamination with resistant bacteria, particularly the quantitative level of resistant bacteria in food, has not yet been well elucidated. In this study, the abundance of colistin-resistant in meat samples was quantified to understand the origin of the contamination of meat available in local Vietnamese markets.

Prevalence, Species Distribution, and Related Factors of Fish-Borne Trematode Infection in Ninh Binh Province, Vietnam.

and minute intestinal flukes (MIF) such as are fish-borne trematodes (FBT) that may coexist in regions where local people have a habit of eating raw fish like Vietnam. Responses to FBT should be verified according to the data on the distribution of these flukes. This study aims to explore the prevalence of different species of FBT and related factors among local people in a northern province of Vietnam.