A5009031235- Analytical Chemistry and Chromatography
- Electrochemical sensors and biosensors
- Polyamine Metabolism and Applications
- biodegradable polymer synthesis and properties
- Advanced Chemical Sensor Technologies
- Molecular Sensors and Ion Detection
- Nanocomposite Films for Food Packaging
- Surgical Sutures and Adhesives
- Electrochemical Analysis and Applications
- Conservation Techniques and Studies
- Chemical Synthesis and Analysis
- Analytical Methods in Pharmaceuticals
- Building materials and conservation
- Electrospun Nanofibers in Biomedical Applications
- Wound Healing and Treatments
- Advanced Cellulose Research Studies
- Microplastics and Plastic Pollution
- Silk-based biomaterials and applications
- Cultural Heritage Materials Analysis
- Escherichia coli research studies
- Pharmacological Effects and Assays
- Indoor Air Quality and Microbial Exposure
- Forensic Toxicology and Drug Analysis
- Genomics, phytochemicals, and oxidative stress
- Hemostasis and retained surgical items
Łukasiewicz Research Network
2023-2025
Lodz University of Technology
2025
Institute of Biopolymers and Chemical Fibres
2010-2018
University of Łódź
2002-2009
The aim of the study was to evaluate biocidal efficacy and determine influence 90% ethyl alcohol applied in form a mist on surface model historical leather. main object were leather shoes from collections Auschwitz-Birkenau State Museum (A-BSM) Oświęcim (Poland). Microorganisms found before objects A-BSM inoculated onto samples Ethanol with an airbrush optimized parameters for 15 s at concentration 90%. To increase effectiveness, sealed tight package stored 22 hours. effect disinfection...
Chitosan, a well-established biomaterial known for its biocompatibility, biodegradability, and bioactivity, has been the focus of extensive research in recent years. This study explores enhancement chitosan fibers' properties through wet impregnation with either ursolic acid (UA) or cross-linking tripolyphosphate (TPP). In first experiment, fibers were treated UA, varying immersion set points (1, 2, 4, 6, 8 h). FTIR, SEM, UV-Vis spectroscopy analyses demonstrated chemical reaction between...
the aim of work was to present changes occurring on model and historical cotton surface resulting from disinfection with 90% ethanol mist. Samples materials consisted fabric elements suitcases stored in A-BSM. A mist applied for 15 s at a distance 16 cm surface. The spectra samples before after application were recorded using Fourier transform infrared spectroscopy (FTIR-ATR). Analyses layers performed X-ray photoelectron (XPS). decontamination did not show any significant differences...
Abstract In a 0.02 M borax solution (pH 8.5), basic amino acids (arginine, lysine, and ornithine) react with Ni 2+ to form mono‐ligand complex that is reduced at mercury electrode about −0.85 V vs. Ag|AgCl|KCl (3 M). At long time scale (staircase voltammetry; scan rate<50 mV s −1 ), the reduction catalytic ( EC ′) process, rate‐determining step being regeneration of reducible species by reaction acid free . short (differential pulse voltammetry or higher rate staircase voltammetry),...
PLA fibres with the addition of microbicidal agent Sanitized were examined by two quantitative standards JIS L 1902:2002 and ASTM: E2149–01. It was found that different methods used to assess antibacterial activity one sample may produce re sults contrast each other. The impact testing conditions upon results obtained deliberated. Discussed are criteria interpret use methods. lactic acid liberated from in an aqueous medium confirmed. also how laundering fibers affect samples tested.
Abstract The application of a modified iodine‐azide procedure for the detection proline, arginine, and lysine is described. Phenyl isothiocyanate was used to transform amino acids into phenyl thiocarbamyl derivatives (derivatization in situ). developed plates were sprayed with mixture sodium azide starch solution, adjusted pH 5.5, exposed iodine vapour. Due catalytic effect CS bond, spots appeared white on violet‐grey background stable 20 minutes. limits found lie pmole range. test compared...
ABSTRACT The application of iodine–azide reaction for the determination non-sulphur amino acids (glycine, alanine, and aspartic acid) transformed into PTC-derivatives with phenyl isothiocyanate in TLC HPTLC, is described. developed plates were sprayed a freshly prepared mixture sodium azide, adjusted to proper pH, starch solution, exposed iodine vapour 5 seconds. detection limits established at pmole level. factors depending on A comparison test reactions other procedures presented. method...
Abstract The iodine‐azide reaction was employed for TLC detection of sulphur containing derivatives biogenic amines. derivatization with phenyl isothiocyanate (PITC) took place directly on the plate before developing step. Subsequently, plates were sprayed a mixture sodium azide and starch solution in NP‐TLC and, case RP‐TLC, incorporated into mobile phase then exposed to iodine vapour. spots became visible as white violet grey background. results limits proved be advantageous other commonly...
Abstract Protein amino acids were derivatized to butylthiocarbamyl derivatives by prechromatographic reaction at 40°C for 30 min with butyl isothiocyanate. The iodine‐azide was employed as the detection system sulphur‐containing derivatives. In practice, plates sprayed a mixture of sodium azide and starch solution then exposed iodine vapour. spots became visible white on violet‐grey background. enabled quantities in range 2–90 pmol per spot. RF values BTC‐derivatives several solvent systems...
The aim of this work was to demonstrate the process manufacturing and applying functionalising additives using a pilot research installation. As part optimisation evaluation, hygienic papers functionalised with biopolymer-biocide compositions based on chitosan, starch Gemini surfactants were prepared. microbiological properties susceptibility biodegradation prototype (prepared in EPICOM) assessed. In particular, minimum amount biopolymer bioactive agent determined ensure finished product...
Abstract Dipeptides were derivatized with phenyl thiocarbamyl (PITC) to sulfur‐containing compounds. The reaction was performed directly on the chromatographic plate in normal phase chromatography. detection system based an iodine‐azide that induced by sulfur procedure involved spraying developed sodium azide and starch solution and, subsequently, exposing iodine vapor. Due catalytic effect of C˭S bonds, white spots appeared violet‐gray background. method found be competitive other...
Over the years, chitosan has been subject of numerous studies and gained significant popularity as a biomaterial due to its various characteristics, including biocompatibility, biodegradability, bioactivity. In this work, fibres surface was modified with ursolic acid improve their antibacterial properties by wet impregnation method. Five specimens were immersed in (UA) solution for varying immersion times 1, 2, 4, 6, 8 hours. Characterization carried out means FTIR, SEM, UV-Vis spectroscopy;...