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....

This study develops NIR-activated mesoporous silicon NPs for targeted cancer therapy. Functionalized with dieckol and dequalinium, they enable pH-sensitive drug release enhance chemo-photothermal effects, selectively eliminating cells.

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...

Abstract The leaf oil compositions of two Lauraceae and one Annonaceae plants cultivated in Vietnam were analysed by GC/MS (gas chromatography‐mass spectrometry) analysis. the first plant Cinnamomum melastomaceum contained 34 identified compounds, which benzyl benzoate (38.5 %), linalool (19.9 ( E )‐caryophyllene (10.5 α ‐terpineol (6.9 %) major compounds. leaves second Neolitsea buisanensis gave an with main compounds )‐ β ‐ocimene (24.0 (15.8 bicyclogermacrene (14.9 (6.3 %). Uvaria...

Abstract Phytochemical study of green propolis alcohol extract Brazilian Caatinga Mimosa tenuiflora (Willd.) Poir resulted in the separation six flavonoids, including quercetin 3‐methyl ether ( 1 ) and 3,3′‐ O ‐dimethylquercetin 2 ), four flavanones eriodictyol 5‐ ‐methyl 3 5,4′‐dihydroxy‐6,7‐dimethoxyflavanone 4 licoflavanone 5 macarangaflavanone B 6 ). All these metabolites were first isolated from genus . Metabolites – also established chemotaxonomic significance since they had never been...

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,...

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...

Using essential oils to control vectors, intermediate hosts, and disease-causing microorganisms is a promising approach. The genus Croton in the family Euphorbiaceae large genus, with many species containing amounts of oils, however, oil studies are limited terms number investigated. In this work, aerial parts C. hirtus growing wild Vietnam were collected analyzed by gas chromatography/mass spectrometry (GC/MS). A total 141 compounds identified oil, which sesquiterpenoids dominated,...

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...

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...

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...

Background: Essential oils are promising candidates for the development of next-generation biopesticides, offering a sustainable alternative to traditional synthetic pesticides. Methods: In this study, essential from various parts Alpinia breviligulata were subjected chemical composition analysis using GC/MS and evaluated their larvicidal activities against Aedes aegypti albopictus mosquitoes following WHO guidelines. Results: The leaf oil is primarily characterized by main components...

Mô hình phát triển đô thị định hướng giao thông công cộng (mô TOD) là một chiến lược để khai thác tối đa hiệu quả sử dụng đất, và bảo vệ môi trường nhằm tới mục tiêu bền vững. Trong đó, đường sắt cụ then chốt thể hóa TOD bằng việc tạo ra sự đồng bộ giữa cộng, kiến không gian các hoạt động mới trong vùng thu hút của trình ga. Để đạt được nâng cao sức khỏe đồng, giảm phương tiện cơ giới cá nhân thải gây ô nhiễm trường, khuyến khích người dân xe đạp đi tiếp cận ga ưu tiên hàng đầu cải thiện hạn...

In the present study, chemical investigation of leaves Annona reticulata has resulted in identification nine compounds, including annonaretin A, (1), a new triterpenoid. The purified compounds were subjected to examination their effects on NO inhibition LPS-activated mouse peritoneal macrophages and most them exhibited significant inhibition, with IC50 values range 48.6 ± 1.2 99.8 0.4 μM.

Mosquito-borne diseases are a large problem in Vietnam as elsewhere. Due to environmental concerns regarding the use of synthetic insecticides well developing insecticidal resistance, there is need for environmentally-benign alternative mosquito control agents. In addition, resistance pathogenic microorganisms antibiotics an increasing problem. As part program identify essential oils larvicidal and antimicrobial agents, leaf, stem, rhizome several Zingiber species, obtained from wild-growing...

Diseases transmitted by mosquitoes and snails cause a large burden of disease in less developed countries, especially those with low-income levels. An approach to control vectors intermediate hosts based on readily available essential oils, which are friendly the environment human health, may be an effective solution for control. Guava is fruit tree grown scale many countries tropics, area heavily affected tropical diseases snails. Previous studies have reported that extracted oils guava...

The essential oils of five Vietnamese Syzygium species (Syzygium levinei, S. acuminatissimum, vestitum, cumini, and buxifolium) were first hydro-distilled analyzed using GC-FID/MS (gas chromatography-flame ionization detection/mass spectrometry). Monoterpene hydrocarbons, sesquiterpene oxygenated sesquiterpenoids the main chemical classes in these oils. All showed good-excellent antimicrobial activities against Gram-positive bacteria Enterococcus faecalis, Staphylococcus aureus, Bacillus...

Essential oils have emerged as viable alternatives to synthetic insecticides for control of mosquito-borne pathogens. The leaf essential eight species Premna (Lamiaceae) growing in central Vietnam been obtained by hydrodistillation and analyzed gas chromatography–mass spectrometry. Sesquiterpene hydrocarbons dominated most the oils, with notable exception Premnamekongensis from Ngoc Linh Nature Reserve, which had α-pinene major component. Larvicidal activities against Aedes aegypti...

Mosquitoes, in addition to being a biting nuisance, are vectors of several pathogenic viruses and parasites. As continuation our work identifying abundant and/or invasive plant species Vietnam for use as ecologically friendly pesticidal agents, we obtained the essential oils Blumea lacera, sinuata, Emilia sonchifolia, Parthenium hysterophorus, Sphaeranthus africanus; analyzed using gas chromatographic techniques; screened mosquito larvicidal activity against Aedes aegypti albopictus. The...