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Analytica
Scopus
ISSN 2673-4532 · MDPI AG · 253 articles in the index
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Laser-Induced Fabrication of Binder-Free Hierarchical Ru-Ir Bimetallic Microstructures for Sensitive Dual-Range Non-Enzymatic Glucose Detection
Developing efficient, non-enzymatic glucose sensors is crucial for overcoming the stability and environmental limitations of conventional enzymatic devices. In this work, a series of ruthenium-based bimetallic microstructures (Ru–Ir, Ru–Pt, Ru–Au DMF, and Ru–Au NPs) were successfully fabricated on…
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A Label-Free Graphene Oxide-Enhanced Piezoelectric Acoustic Biosensor for DLX1 Detection
Distal-less homeobox 1 (DLX1) has emerged as a promising urinary biomarker for prostate cancer. This study developed a label-free piezoelectric acoustic biosensor for selective DLX1 detection using a quartz crystal microbalance (QCM). The QCM gold electrode was sequentially functionalized with…
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Development and Validation of a Cost-Effective and Sensitive UHPLC-ESI-MS/MS Method for Vitamin B12 Determination in Yogurt
The accurate determination of vitamin B12 in fortified food products presents considerable analytical challenges due to its low concentrations (μg kg−1) and its binding to proteins in dairy products. This study aimed to develop a reliable and accurate method for determining vitamin B12 in yogurts…
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Fatty Acid Profile of Cerrado Fruit Byproducts: Plant-Based Oil Alternatives to Conventional Commodities
The global reliance on commodity oils has intensified the search for alternative plant-based sources capable of meeting increasing worldwide demand. The utilization of fruits from the Brazilian Savanna and their associated byproducts offers numerous possibilities, as these native species are rich…
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Maize Lipid Metabolite Prediction Using Hyperspectral Imaging and Deep Feature Learning
Lipid metabolites in maize kernels determine grain quality by influencing nutritional value, oxidative stability, and post-harvest deterioration, making their profiling essential for quality improvement and breeding. This study applies hyperspectral imaging (HSI) with a spectral range of 900–1700…
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Determining the Chain Conformation, Microstructure, and Antioxidant Activity of Fucoidan from Dictyota dichotoma Growing in the Sea of Cortez, Mexico
Brown algae, such as Dictyota dichotoma, contain fucoidan, whose bioactivity is linked to its molecular characteristics, which are in turn defined by environmental conditions. D. dichotoma fucoidan from the Sea of Cortez in Mexico (DDFSC) has not been previously investigated. This study aimed to…
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Green Analytical Strategies for Accurate Density Calibration and Measurement in Biotechnology: Propylene Carbonate, Guanidine Hydrochloride and Aqueous Salt Systems as Safe Candidate Standards
Density measurement with vibrating tube density meters is a fundamental technique in biotechnology, for example, as the metrological base for spectroscopy calibrations. However, conventional multi-point adjustments frequently rely on hazardous halogenated solvents. In this work, green alternatives…
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Development of a Sensitive Analytical Method for the Determination of Sulforaphane in Vegetables by Automated Online In-Tube SPME/LC–MS/MS
Sulforaphane (SFN), an isothiocyanate abundant in cruciferous vegetables, possesses well-documented anticancer, antioxidant, and anti-inflammatory properties, and has attracted interest as a dietary chemopreventive agent. However, sensitive and fully automated methods for its quantification in…
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Interpretable Chemometric Modeling of Azo Dye Adulteration in Paprika Powder by Benchtop FT-NIR and Handheld Vis-NIR Spectroscopy
Synthetic azo dyes are relevant paprika adulterants and a food-safety concern when used in undeclared or non-authorized forms. This study investigated the quantification of three representative dyes—Allura Red (E129), Orange II, and Ponceau 4R (E124)—spiked into paprika powder from 0 to 6% w/w…
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Analysis of Microplastic Contamination in Water, Sediment, and Fish on the Northeastern Coast of Libya
Microplastic contamination has become an emerging environmental concern in marine ecosystems worldwide. This study investigated the occurrence, abundance, size, color, and polymer composition of microplastics in surface water, marine sediments, and the gastrointestinal tracts of commercially…
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Physicochemical Assessment of Selected Conductive Polymers for Probable Mercury Remediation in Wastewater—Experimental and DFT Approach
Mercury contamination in aquatic environments poses significant risks to ecosystems and human health, underscoring the need for effective remediation technologies. This research examines the physicochemical properties of the synthesised polymer materials, and DFT calculations were used as an…
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Chemical Characterization of Fraxinus angustifolia Vahl. ssp. pannonica Soó & Simon Stump-Derived Biomass: Evaluation of Valorization Potential
During forest exploitation, large amounts of wood biomass are left as residues after harvesting, even though this material could be valuable in reducing greenhouse gas emissions by replacing fossil fuels and serving as a source of bioactive compounds. Within the context of the European Union’s…
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Optimization of CO2 Supercritical Extraction and Air-Drying Temperature Process on the Antimicrobial Properties of Pistacia lentiscus Leaves Essential Oil
Supercritical carbon dioxide extraction (SFE-CO2) is an efficient and environmentally friendly process for extracting bioactive compounds from plant material. This investigation examined the combined effects of air-drying temperature of the leaves and SFE-CO2 operating conditions on the extraction…
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Development and Certification of CPP-23: A Multi-Element Certified Reference Material for Cereal Plant Tissue from Semi-Arid Regions
Reliable determination of macro- and micronutrients in cereal plant tissues is essential for agronomic management, environmental monitoring, and interlaboratory data comparability. However, most existing plant certified reference materials (CRMs) are derived from temperate-region matrices and do…
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Using Hydrogen/Deuterium Exchange in Untargeted LC-MS Analysis of Small Molecules
Liquid chromatography–hydrogen/deuterium exchange–mass spectrometry (LC-HDX-MS) provides orthogonal structural information that complements conventional LC-MS and improves confidence in small-molecule structural elucidation. Although HDX-MS is well established in protein research, its application…
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TriCA as a Triple-Color Assessment Tool for Analytical Methods
The evaluation of analytical methods has evolved beyond traditional validation parameters to encompass environmental sustainability, analytical reliability, and practical applicability. While numerous assessment tools exist for individual dimensions, integrated multicolor frameworks often impose…
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Mass Spectrometry-Based Metabolomic Aging Clocks: Analytical Workflows, Metabolite Signatures, and Clinical Perspectives
Metabolomic aging clocks—quantitative models that estimate biological age based on small-molecule profiles in biological fluids—have become dynamic tools for assessing individual aging trajectories and predicting the risk of age-related diseases. Although NMR-based approaches have been previously…
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Cross-Validation of Low-Cost Potentiometric and Colorimetric Methods for Urinary Urea Quantification: Toward Accessible Monitoring of Protein Metabolism
Urinary urea is a key biomarker for tracking protein oxidation and nitrogen balance. A persistent analytical limitation is that conventional total-nitrogen assays do not deconvolute urinary urea from urinary ammonia, and direct measurement still requires capital-intensive clinical analyzers. Here…
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Structural and Functional Properties of a Sulfated Polysaccharide Extracted from Mexican Red Algae
Sulfated polysaccharides from red algae are multifunctional hydrocolloids whose properties depend strongly on molecular structure, sulfate content, and chain conformation. In this study, a sulfated galactan extracted from Gracilaria vermiculophylla collected from a coastal region of northwestern…
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Quantitative Screening of Sodium Salt Azo Dyes in Paprika Powder by Handheld Laser-Induced Breakdown Spectroscopy
Synthetic azo dyes may be fraudulently added to paprika powder to intensify color, creating a need for rapid, at-line screening before confirmatory chromatographic analysis. This study evaluated handheld laser-induced breakdown spectroscopy (LIBS) for the screening of sodium-salt azo dye…