Essential oils are promising as environmentally friendly and safe sources of pesticides for human use. Furthermore, they also interest aromatherapeutic agents in the treatment Alzheimer's disease, inhibition enzyme acetylcholinesterase (AChE) has been evaluated an important mechanism. The essential some species genera Callicarpa, Premna, Vitex Karomia family Lamiaceae were electric eel AChE using Ellman method. Callicarpa candicans showed activity, with IC50 values between 45.67 58.38 μg/mL....

Mosquitoes are important vectors of several diseases, and control these insects is imperative for human health. Insecticides have proven useful in controlling mosquito populations, but insecticide resistance environmental concerns increasing. Additionally, emerging re-emerging microbial infections problematic. Essential oils been shown to be promising larvicidal agents as well antimicrobial agents. In this work, the essential from four species Myrtaceae (Baeckea frutescens, Callistemon...

Chemical compositions in the leaf essential oils of four Syzygium species were first identified by GC-FID/MS analysis. Monoterpene hydrocarbons (39.6-51.1%), and sesquiterpene (27.0-37.8%) main chemical classes S. formosum syzygioides oils, whereas (83.0-83.8%) predominant Megacarpum chantaranothaianum oils. Bicyclogermacrene (9.1-37.0%) was principal compounds these All tested with MIC values 16-128 µg/mL comparable to positive control streptomycin against Gram-positive bacteria...

The Lauraceae is a family rich in aromatic and medicinal plants. Likewise, essential oils derived from members of this have demonstrated myriad biological activities. It hypothesized that the Vietnam will yield may be useful controlling mosquito populations treating microbial infections. In work, leaf eleven species (Beilschmiedia erythrophloia, B. robusta, yunnanensis, Cryptocarya concinna, C. impressa, infectoria, Litsea viridis, Machilus balansa, M. grandifolia, Neolitsea ellipsoidea,...

Mosquito-borne infections are a constant problem in Vietnam, and mosquito vector control is primary approach to these infections. Essential oils represent environmentally friendly alternatives synthetic pesticides for control. The essential of two weedy species Erechtites hieraciifolius E. valerianifolius, have been obtained by hydrodistillation analyzed gas chromatography–mass spectrometry. screened larvicidal activity against Aedes albopictus, Ae. aegypti, Culex quinquefasciatus. oil from...

The present study is the first to investigate chemical composition, antimicrobial and larvicidal activities of essential oils from leaves Syzygium attopeuense (Gagnep.) Merr. & L.M.Perry tonkinense collected in Vietnam. were extracted by hydrodistillation analyzed GC GC-MS. indicated presence a high percentage sesquiterpenes both investigated oils. major components S. oil bicyclogermacrene (24.26%), (E)-caryophyllene (11.72%), (E)-β-ocimene (6.75%), whereas was dominated (80.80%). activity...

There are around 140 species in the genus Callicarpa, with 23 occurring Vietnam. The Vietnamese Callicarpa have been poorly studied. In this work, leaf essential oils of C. bodinieri, candicans, formosana, longifolia, nudiflora, petelotii, rubella, and sinuata, obtained from plants growing central chemical compositions were determined using gas chromatography – mass spectrometry. Mosquito larvicidal activities carried out against Aedes aegypti. All showed activity, but two samples candicans...

Mosquito-borne infectious diseases are a persistent problem in tropical regions of the world, including Southeast Asia. Vector control has relied principally on synthetic insecticides, but these have detrimental environmental effects and there is an increasing demand for plant-based agents to insect pests. Invasive weedy plant species may be able serve as readily available sources essential oils, some which useful larvicidal mosquito populations. We hypothesize that members genus Conyza...

Abstract Lantana camara is a troublesome invasive plant introduced to many tropical regions, including Southeast Asia. However, the does hold promise as source of essential oils that may be explored for potential use. Fresh water snails such Pomacea canaliculata , Gyraulus convexiusculus and Tarebia granifera can problematic agricultural pests well hosts parasitic worms. Aedes Culex mosquitoes are notorious vectors numerous viral pathogens. Control these utmost importance. In this work, oil...

Cytotoxic, antioxidative, and antimicrobial activities of Camellia annamensis, its chemical compositions were first provided in the current study. Phenolic contents methanol extracts leaves flowers 222.73 ± 0.09 64.44 0.08 mg GAE/g extract, whereas flavonoid these parts 108.80 0.28 131.26 0.39 rutin/g respectively. By using HPLC-DAD analysis, gallic acid (43.72 − 81.89 1.83 mg/g) (–)-epigallocatechin gallate (67.31 1.26 70.68 7.82 identified as major compounds. C. annamensis leaf flower...

Human resources are the foundation of a nation's success and development, reflecting social progress, equity, sustainable growth. Vietnam has prioritized improving human resource quality as strategic breakthrough to transform its socio-economic development model enhance competitiveness in globalized world. The Communist Party issued policies emphasizing integration education training with scientific research, technological innovation, practical applications production business. Bold...

Background and Objectives The genus Piper (family Piperaceae) includes aromatic plants widely used as spices in traditional medicine. Essential oils from species are known for their antimicrobial pesticidal properties. This study aims to characterize the chemical profiles of stem bark leaf essential two Vietnamese species, hainanense P. thomsonii, evaluate biological activities. Methods oil components were identified using gas chromatography-mass spectrometry (GC-MS). Antimicrobial activity...

Objectives This study aimed to investigate the essential oil extracted from in continuation of an extensive research on chemical compositions and biological potentials oils Vietnamese plants as they are made available, we studied leaves Canarium subulatum Guillaumin (Burseraceae) Illicium petelotii A. C. Smith (Schisandraceae). Methods Chemical compounds were identified using GC-FID/MS (gas chromatography-flame ionization detection/mass spectrometry) analysis. The broth microdilution method...

Sustainability reporting is a critical process through which companies disclose environmental, social, and governance (ESG) goals communicate progress toward achieving them. As strategic tool for improving transparency corporate accountability, SDRs serve to inform stakeholders about company’s commitment sustainable development. This study investigates the determinants of Sustainable Development Report (SDR) disclosure among listed on Vietnamese stock market between 2020 2022. By integrating...

Mosquitoes are the deadliest animals on earth and vectors of several neglected tropical diseases. Recently, essential oils have emerged as potential renewable, cost-effective, environmentally benign alternatives to synthetic pesticides for control mosquitoes. In this work, thirteen species Piper were collected from different areas central Vietnam. The obtained by hydrodistillation analyzed gas chromatography-mass spectrometry. screened mosquito larvicidal activity against Aedes aegypti. Four...

Members of the genus Cinnamomum (Lauraceae) have aromatic volatiles in their leaves and bark some species are commercially important herbs spices. In this work, essential oils from five (C. damhaensis, C. longipetiolatum, ovatum, polyadelphum tonkinense) growing wild north central Vietnam were obtained by hydrodistillation, analyzed gas chromatography screened for antimicrobial mosquito larvicidal activity. The leaf oil tonkinense, rich β-phellandrene (23.1%) linalool (32.2%), showed...

The present paper reports for the first time chemical composition and antimicrobial activity of essential oil from leaves Phoebe macrocarpa C. Y. Wu. yield was 0.28% (w/w). features monoterpene hydrocarbons (3.3%), oxygenated monoterpenes (2.8%), sesquiterpene (31.9%) sesquiterpenes (46.0%). major compounds were β-caryophyllene (16.6%) spathulenol (12.6%). showed moderate towards Enterococcus faecalis ATCC299212 with minimum inhibitory concentration (MIC) value 128 µg/mL, Staphylococcus...

Abstract The current study describes the chemical identification, antimicrobial, and mosquito larvicidal activities of essential oils from Meistera caudata Conamomum vietnamense , growing in Vietnam. Essential were extracted leaves rhizomes, characterized by GC-FID/MS (gas chromatography-flame ionization detection/mass spectrometry) analysis. Monoterpenes (33.1–89.2 %) main class found these oils. β -Pinene (30.8 α -pinene (23.8 two major compounds M. leaf oil. C. rhizome dominated...

AbstractThe chemical constituents and antimicrobial activity of the essential oils isolated from leaves Machilus cicatricosa S.K. Lee bonii Lecomte Vietnam were studied reported. The techniques gas chromatography (GC) coupled with mass spectrometry (GC-MS) used to characterize oil while microdilution assay was evaluate activity. main leaf M. α-pinene (20.6%), bicyclogermacrene (15.2%), linalool (14.9%), β-pinene (8.4%). On other hand (E)-β-ocimene (26.3%), (23.6%) (E)-nerolidol (9.1%) major...

AbstractThe present study aims to describe the chemical composition of essential oils from three Vietnamese Annonaceae species, Meiogyne virgata, M. vietnamica, and Orophea polycarpa, their antimicrobial activity. Essential were extracted by hydro-distillation. From GC-FID/MS (gas chromatography-flame ionization detection mass spectrometry) analysis, leaf oil virgata was reported contain major compound germacrene D (42.48%). Spathulenol (24.51%), bicyclogermacrene (18.58%), β-selinene...

The current study first describes the chemical profile of leaf essential oils from two Annonaceous plants. Hydro-distillation and sequential GC-FID/ MS analyses resulted in identification (E)-caryophyllene (29.35%), γ-curcumene (22.91%), β-pinene (12.37%), bicyclogermacrene (6.16%) as major compounds Mitrephora calcarea oil. In meantime, M. maingayi oil was associated with appearance main (31.94%), (E)-β-ocimene (12.23%), α-humulene (9.00%), γ-elemene (6.82%), germacrene B (7.57%),...

Inclusive financial development has been identified by countries, including Vietnam, as one of the important measures to promote and support individuals small businesses borrow capital develop production, business consumption, serving economic social country locality. In this study, author discusses content inclusive two basic factors affecting development, traditional finance digital finance. Based on theoretical framework developed, conducted a survey 400 managers 200 institutions...