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Deciphering the interactions of scopoletin and scopolin from Catunaregam nilotica roots against Naja nigricollis phospholipase A enzyme.
Toxicon
May 2024
Department of Pharmaceutical and Medicinal Chemistry, Usmanu Danfodiyo University, Sokoto, Nigeria.
Article Synopsis
- Catuneragam nilotica has traditional medicinal uses for treating snakebites, inflammation, and diarrhea, and this research aims to isolate phospholipase A (PLA) inhibitors from its roots.
- The study involved extracting compounds from the plant using various solvents and identifying two key inhibitors, scopoletin and scopolin, which showed significant inhibition of the PLA enzyme compared to a standard antisnake venom.
- The findings support the herbal use of C. nilotica for snakebite treatment, showing that its compounds not only bind effectively to the PLA enzyme but also possess favorable drug-like properties and varying levels of toxicity.
Batch-to-batch reproducibility for the primary pH method for the example of NMIJ carbonate buffer solutions.
Anal Bioanal Chem
May 2024
National Metrology Institute of Japan, National Institute of Advanced Industrial Science and Technology, 1-1-1 Umezono, Tsukuba, Ibaraki, 305-8563, Japan.
At present, the National Metrology Institute of Japan provides six national primary pH buffers under the Japan Calibration Service System. Each batch of these buffers is certified by the primary pH method using a Harned cell. On the basis of these primary buffers, the designated laboratories supply the secondary and working pH standards using a high-precision pH meter.
View Article and Find Full Text PDFThe purpose of the research is to describe plant community formation on the quarry surfaces to determine a path for optimal revegetation. To achieve the goal, the studies determined soil pH, the content of skeletal fraction, basal respiration, and performed the acidimetric assessment of CO. The research program aimed to investigate the peculiarities of plant communities' formation in areas with different degrees of revitalization and investigate the influence of soil cover on plant associations.
View Article and Find Full Text PDFCoulometric method with titratable impurity analysis and mass balance method: convert acidimetric purity to chemical purity for SI-traceable highest standard of qNMR (potassium hydrogen phthalate), and verified by qNMR.
Anal Bioanal Chem
March 2023
College of Chemistry, Beijing University of Chemical Technology, Beijing, 100029, People's Republic of China.
In this study, the coulometric method with titratable impurity analysis and the mass balance method were successfully applied in the quantification of the certified reference material of potassium hydrogen phthalate (KHP) with accurate metrological traceability of chemical purity value (99.983% with an expanded uncertainty of 0.024%, k = 2).
View Article and Find Full Text PDFSynthesis and Structural and Spectroscopic Studies of a pH-Neutral Argentic Chelate Complex: Tribasic Silver (III) Bisperiodate.
ACS Omega
October 2021
Exciton Pharma Corp, Toronto, Ontario M5G 1L7, Canada.
The preparation of stable hypervalent metal complexes containing Ag(III) has historically been challenging due to their propensity for reduction under ambient conditions. This work explores the preparation of a tripotassium silver bisperiodate complex as a tetrahydrate via chemical oxidation of the central silver atom and orthoperiodate chelation. The isolation of the chelate complex in high yield and purity was achieved via acidimetric titration.
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