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Analytica, Volume 5, Issue 4

December 2024 - 12 articles

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Articles (12)

  • Article
  • Open Access
1 Citations
1,391 Views
13 Pages

Refinement of Retention Indices in Gas Chromatography for a Number of Substituted Phenols

  • Anastasia Yu. Sholokhova,
  • Svetlana A. Borovikova and
  • Dmitriy D. Matyushin

18 December 2024

Substituted phenols, including chlorophenols, are important analytes, particularly in the context of environmental analysis. Chlorophenols are formed during the disinfection of drinking water by chlorination and are important water pollutants. Gas ch...

  • Article
  • Open Access
1,488 Views
9 Pages

A First-Order Derivative Spectrophotometric Method for the Quantification of Saquinavir in the Presence of Piperine in a Eutectic Mixture

  • Tamara Quesada-Soto,
  • Luis Felipe Vargas-Huertas,
  • José Roberto Vega-Baudrit,
  • Mirtha Navarro-Hoyos and
  • Andrea Mariela Araya-Sibaja

18 December 2024

Saquinavir is a drug used as an HIV treatment, with recent reports of new uses. It has poor aqueous solubility and very low oral bioavailability. However, when prepared in a eutectic mixture with the natural bioenhancer, piperine, it demonstrated imp...

  • Article
  • Open Access
1,252 Views
13 Pages

Dose–Response Curve in REMA Test: Determination from Smartphone-Based Pictures

  • Eugene B. Postnikov,
  • Alexander V. Sychev and
  • Anastasia I. Lavrova

10 December 2024

We report a workflow and a software description for digital image colorimetry aimed at obtaining a quantitative dose–response curve and the minimal inhibitory concentration in the Resazurin Microtiter Assay (REMA) test of the activity of antimy...

  • Review
  • Open Access
3 Citations
2,788 Views
20 Pages

30 November 2024

Boron nitride nanostructures (BNNs), including nanotubes, nanosheets, and nanoribbons, are renowned for their exceptional thermal stability, chemical inertness, mechanical strength, and high surface area, making them suitable for advanced material ap...

  • Article
  • Open Access
1 Citations
1,106 Views
12 Pages

28 November 2024

This study describes the development of an optical-based surface plasmon resonance (SPR) aptasensor for the detection of cocaine. The aptasensor was prepared by first attaching gold nanoparticles to a clean SPR chip surface, followed by the addition...

  • Article
  • Open Access
1,093 Views
11 Pages

14 November 2024

Complexation between carnitine and acetylated or benzylated pyrogallol[4]arenes was studied in DMSO via dynamic NMR, UV-vis spectroscopy, and in the gas phase via electrospray ionization-mass spectrometry (ESI-MS). In the presence of benzylated tetra...

  • Review
  • Open Access
11 Citations
3,956 Views
24 Pages

3D-Printed Electrochemical Sensors: A Comprehensive Review of Clinical Analysis Applications

  • Thaís Cristina de Oliveira Cândido,
  • Daniela Nunes da Silva,
  • Marcella Matos Cordeiro Borges,
  • Thiago Gabry Barbosa,
  • Scarlat Ohanna Dávila da Trindade and
  • Arnaldo César Pereira

11 November 2024

Three-dimensional printing technology has emerged as a versatile and cost-effective alternative for the fabrication of electrochemical sensors. To enhance sensor sensitivity and biocompatibility, a diverse range of biocompatible and conductive materi...

  • Article
  • Open Access
1 Citations
2,414 Views
14 Pages

16 October 2024

The GPHF-Minilab™ is a portable toolkit for performing qualitative methods such as thin-layer chromatography (TLC) on common pharmaceuticals. It is particularly useful in resource-limited locations where it is more challenging to monitor for su...

  • Review
  • Open Access
4 Citations
3,898 Views
26 Pages

Recent Advances in Monitoring Microbial Toxins in Food Samples by HPLC-Based Techniques: A Review

  • Gabriela Elizabeth Quintanilla-Villanueva,
  • Araceli Sánchez-Álvarez,
  • Raisa Estefanía Núñez-Salas,
  • Melissa Marlene Rodríguez-Delgado,
  • Donato Luna-Moreno and
  • Juan Francisco Villarreal-Chiu

11 October 2024

This study examines the significant impact of bacterial, algal, and fungal toxins on foodborne illnesses, and stresses the importance of advanced detection techniques, such as high-performance liquid chromatography (HPLC)-based methodologies. It emph...

  • Article
  • Open Access
1,834 Views
13 Pages

Chemical Characterization and Biological Activity of Varronia curassavica Jacq. Essential Oil (Boraginaceae) and In Silico Testing of α-Pinene

  • José Thyálisson da Costa Silva,
  • Viviane Bezerra da Silva,
  • Sabrina Bezerra da Silva,
  • Maria Ivaneide Rocha,
  • Adrielle Rodrigues Costa,
  • Jailson Renato de Lima Silva,
  • Marcos Aurélio Figueirêdo dos Santos,
  • Maria Elizete Machado Generino,
  • Jeovane Henrique de Souza and
  • Maraiza Gregorio de Oliveira
  • + 8 authors

3 October 2024

Multidrug-resistant bacteria have complicated the treatment of gastrointestinal diseases; their microbial resistance stems from the indiscriminate use of medications and the transfer of resistance genes. Varronia curassavica Jacq., a plant traditiona...

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