A5043627838- Isotope Analysis in Ecology
- Astro and Planetary Science
- Planetary Science and Exploration
- Mass Spectrometry Techniques and Applications
- Origins and Evolution of Life
- Marine and coastal ecosystems
- Toxic Organic Pollutants Impact
- Soil and Land Suitability Analysis
- Advanced Chemical Sensor Technologies
- Metabolomics and Mass Spectrometry Studies
- Nanoplatforms for cancer theranostics
- Olfactory and Sensory Function Studies
- Advanced Proteomics Techniques and Applications
- Analytical Chemistry and Chromatography
- Air Quality Monitoring and Forecasting
- Soil and Water Nutrient Dynamics
- Geological and Geochemical Analysis
- Traditional and Medicinal Uses of Annonaceae
- Advanced Chemical Physics Studies
- Oil Spill Detection and Mitigation
- Space Exploration and Technology
- Light effects on plants
- Plant chemical constituents analysis
- Nanoparticle-Based Drug Delivery
- Environmental Impact and Sustainability
Université de Poitiers
2012-2024
Institut de Chimie des Milieux et des Matériaux de Poitiers
2014-2024
Centre National de la Recherche Scientifique
2012-2024
Institut de Chimie
2014-2019
The formation of protein precursors, due to the condensation atomic carbon under low-temperature conditions molecular phases interstellar medium, opens alternative pathways for origin life. We perform peptide synthesis prevailing in space and provide a comprehensive analytic characterization its products. application 13C allowed us confirm suggested pathway that proceeds polymerization aminoketene molecules are formed C + CO NH3 reaction. Here, we address question how efficiency production...
Abstract The 2.1‐billion‐year‐old (Ga) Francevillian series in Gabon hosts some of the oldest reported macroscopic fossils various sizes and shapes, stimulating new debates on origin, evolution organization early complex life. Here, we document ten representative types exceptionally well‐preserved mat‐related structures, comprising “elephant‐skin” textures, putative macro‐tufted microbial mats, domal buildups, flat pyritized discoidal colonies, horizontal mat growth patterns, wrinkle...
Pituranthos chloranthus, commonly known in Arabic as ‘Aljen,’ is a small aromatic plant which grows spontaneously North Africa and it widespread central southern Tunisia. This paper the first report of its kind on isolation characterization certain coumarin derivatives from extract roots aerial parts this plant. Background: chloranthus (Apiaceae) ‘Aljen’ an endemic Tunisian plant, largely used folk medicine. contains bioactive compounds, particularly derivatives. The objective present study...
We developed a volatile organic compound (VOC)-based probe cocktail for monitoring the dysregulation of tumour-associated enzymes via detection tracers in animal breath, thereby allowing discovery new tumour targeted therapy.
Assessing soil quality is essential for crop management and temporal changes. The present study aims to evaluate in the Ferralitic soils context countrywide. This assessment was done using multivariate indice (SQI) models, such as additive index (AQI), weighted indexes (WQIadd WQIcom) Nemoro (NQI), applied two approaches of indicator selection: total data set (TDS) minimum (MDS). Physical chemical indicators were extracted from ORSTOM's reports resulting a sampling campaign different...
Gabonese's estuary is an important coastal mangrove setting and soil plays a key role in carbon storage forests. However, the spatial variation organic (SOC) remain unclear. To address this gap, determining SOC estuarine essential for better understanding global cycle. The present study compared between northern southern sites different forest, Rhizophora racemosa Avicennia germinans. results showed that mean stocks at 1 m depth were 256.28 ± 127.29 MgC ha−1. Among regions, zone was...
Meteorites have been found to be rich and highly diverse in organic compounds. Next previous direct infusion high resolution mass spectrometry experiments (DI-HR-MS), we present here data-driven strategies evaluate UPLC-Orbitrap MS analyses. This allows a comprehensive mining of structural isomers extending the level information on molecular diversity astrochemical materials. As proof-of-concept study, Murchison Allende meteorites were analyzed. Both, global fingerprint specific isomer...
The data presented here are related to the research paper entitled "Study of a Novel Agent for TCA Precipitated Proteins Washing - Comprehensive Insights into Role Ethanol/HCl on Molten Globule State by Multi-Spectroscopic Analyses" (Eddhif et al., submitted publication) [1]. suitability ethanol/HCl washing TCA-precipitated proteins was first investigated standard solution HSA, cellulase, ribonuclease and lysozyme. Recoveries were assessed one-dimensional gel electrophoresis, Bradford assays...
The search for complex organic molecules in extraterrestrial environments, including important biomolecules such as amino and fatty acids, will require a space compatible sample handling system to enable their detection by gas chromatography–mass spectrometry (GC-MS). For the future Mars exploratory mission Exomars 2018 aimed at detection, dedicated laboratory pilot, called Device Pretreatment of Sample (DPS), reproducing representative operating conditions has been developed. After its...
Within the perspective of current and future space missions, detection separation building blocks such as amino acids are important subjects which becoming fundamental in search for origin life traces solar system. In this work, we have developed optimized a strategy adapted to experimentation detect presence acid-like compounds using gas chromatography coupled mass spectrometry (GC-MS). Selected derivatization methods meet instrument design constraints imposed on situ extraterrestrial...
Dissolved organic matter is an important component of the global carbon cycle that allows distribution and nutrients. Therefore, analysis soil dissolved helps us to better understand climate change impacts as it most dynamic reactive fraction in terrestrial ecosystems. Its characterization at molecular level still challenging due complex mixtures hundreds compounds low concentration levels percolating water. This work presents simple methods, such thermochemolysis– or derivatization–gas...
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Progresses in chemical biology have substantially deepened our understanding of biological pathways related to disease outcomes. Numerous optical probes activatable by disease-relevant enzymes been designed and shown great value for imaging crucial biochemical transformations specific pathological processes. In comparison their "always-on" counterparts, such stimuli-responsive stand out as promising candidates exploring processes because high sensitivity, ingenious spatiotemporal resolution,...
The search for biomarkers in our solar system is a fundamental challenge the space research community. It encompasses major difficulties linked to their very low concentration levels, ambiguous origins (biotic or abiotic), as well diversity and complexity. Even if, 40 years’ time, great improvements sample pre-treatment, chromatographic separation mass spectrometry detection have been achieved, there still need new situ scientific instrumentation. This work presents an original liquid with...