Development of a Tandem Mass Spectral Library for the Detection of Triterpenoids in Plant Metabolome Based on Reference Standards.

Plant triterpenoids represent a diverse group of secondary metabolites and are thought to be valuable for therapeutic applications. For drug development, lead optimization, better knowledge of biological pathways, and high-throughput detection of secondary metabolites in plant extracts are crucial. This paper describes a qualitative method for the rapid and accurate identification of various triterpenoids in plant extracts using the LC-HR-ESI-MS/MS tool in combination with the data-dependent acquisition (DD) approach.

Caries Impacts and Experiences and dental Care Utilization for Saudi Schoolchildren: CARIES-QC a Disease-Specific Measure.

Introduction: The Caries Impacts and Experiences Questionnaire (CARIES-QC) is a disease-specific questionnaire that assesses the impact of caries on the oral health-related quality of life of children. This study aimed to establish a baseline for caries-specific impact on schoolchildren in Saudi Arabia and to examine its association with dental care utilization.

Methods: This cross-sectional study used random stratified cluster sampling among 4th-6th graders in Jeddah.

Electrokinetic Power-Series Solution in Narrow Cylindrical Capillaries for All Zeta Potentials.

Work from Rice and Whitehead showed the results of electrokinetic flow in a capillary tube under the assumption of low zeta potential 25 mV, limiting the approximation's usability. Further research conducted by Philip and Wooding provided an alternative solution that assumes high zeta potentials 25 mV and relies on Rice and Whitehead's solution for lower ranges. However, this solution is presented as a piecewise function, where the functions change based on the zeta potential and the parameter, introducing infinite values for the zeta potential and discontinuities in the derived functions.

Updated Review of Metal Nanoparticles Fabricated by Green Chemistry Using Natural Extracts: Biosynthesis, Mechanisms, and Applications.

Metallic nanoparticles have found wide applications due to their unique physical and chemical properties. Green biosynthesis using plants, microbes, and plant/microbial extracts provides an environmentally friendly approach for nanoparticle synthesis. This review discusses the mechanisms and factors governing the biosynthesis of metallic nanoparticles such as silver, gold, and zinc using various plant extracts and microorganisms, including bacteria, fungi, and algae.