Enhancing extraction efficiency of carpaine in L. leaves: coupling acid-base extraction with surfactant-assisted micro-flotation.

Carpaine, a major alkaloid in papaya leaves, has considerable cardiovascular benefits alongside its notable effects on muscle relaxation when utilized in medicine. In this study, the coupling of acid-base extraction and flotation was developed to completely remove the use of toxic solvents. This method entails the extraction of carpaine from L.

Crucial Role of Surfactants in Improving the Extraction Efficiency of β-Amyrin from Using Ultrasound-Assisted Extraction Coupled with Gas Bubble Flotation.

Ultrasound-assisted extraction coupled with gas bubble flotation was developed as a green method for extracting β-amyrin from. The solvent system was water:ethanol (9:1). To improve the adsorption of β-amyrin onto the air/liquid interface during flotation, surfactants were employed; however, the positive effect was only observed with cationic surfactants.

Dengue fever in Southern of Vietnam: A survey of reported knowledge, attitudes, and practices.

Objective: Dengue fever (DF) is an acute infectious disease with high incidence in tropical countries, such as Vietnam, where dengue prevention is a challenge for the health sector, government, and policy makers. The aim of this study was to assess the knowledge, attitudes, and practices in southern Vietnam and explore their relationships with the characteristics of the people.

Methods: A cross-sectional study was conducted, using interviews with 1,906 urban participants and 493 rural participants in southern Vietnam in July 2018.

Combined Layer/Particle Approaches in Surface Molecular Imprinting of Proteins: Signal Enhancement and Competition.

Herein we report novel approaches to the molecular imprinting of proteins utilizing templates sizing around 10 nm and some 100 nm. The first step comprised synthesizing nanoparticles of molecularly imprinted polymers (MIP) towards bovine serum albumin (BSA) and characterizing them according to size and binding capacity. In a second step, they were utilized as templates.