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Huerta-Ángeles G, Kanizsová L, Mielczarek K, Konefał M, Konefał R, Hodan J, Kočková O, Bednarz S, Beneš H. Sustainable aerogels based on biobased poly (itaconic acid) for adsorption of cationic dyes. Int J Biol Macromol 2024; 259:129727. [PMID: 38272425 DOI: 10.1016/j.ijbiomac.2024.129727] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Revised: 01/12/2024] [Accepted: 01/22/2024] [Indexed: 01/27/2024]
Abstract
This work reports the synthesis of poly (itaconic acid) by thermal polymerization mediated by 2,2'-Azobis(2-methylpropionamidine) dihydrochloride. Furthermore, physical hydrogels were prepared by using high molecular weight poly (itaconic acid) characterized by low dispersity and laponite RD. The hydrogels presented porous 3D network structures, with a high-water penetration of almost 2000 g/g of swelling ratio, which can allow the adsorption sites of both poly (itaconic acid) and laponite RD to be easily exposed and facilitate the adsorption of dyes. The water adsorption followed Schott's pseudo-second-order model. The mechanism of the adsorption process was investigated using 1H and 31P NMR. The hydrogel is able to fast adsorb by a combination of electrostatic interactions and hydrogen bonding by the synergic effect of the clay and poly (itaconic acid). Moreover, the prepared aerogels exhibited a fast removal of Basic Fuchsin, with an adsorption capacity of 67.56 mg/g and a high removal efficiency (~99 %). The adsorption followed the pseudo-second-order kinetic model and Langmuir isotherm model. Furthermore, the thermodynamic parameters showed that the BF process of adsorption was spontaneous and feasible, endothermic, and followed physisorption. These results indicated that the PIA/laponite-based aerogel can be considered a promising adsorbent material in textile wastewater treatment.
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Affiliation(s)
- Gloria Huerta-Ángeles
- Institute of Macromolecular Chemistry of the Czech Academy of Sciences, Heyrovského nam. 2, 162 06 Prague, 6, Czech Republic.
| | - Lívia Kanizsová
- Institute of Macromolecular Chemistry of the Czech Academy of Sciences, Heyrovského nam. 2, 162 06 Prague, 6, Czech Republic
| | - Kacper Mielczarek
- Cracow University of Technology, Faculty of Chemical Engineering and Technology, Department of Biotechnology and Physical Chemistry, Cracow, Poland
| | - Magdalena Konefał
- Institute of Macromolecular Chemistry of the Czech Academy of Sciences, Heyrovského nam. 2, 162 06 Prague, 6, Czech Republic
| | - Rafał Konefał
- Institute of Macromolecular Chemistry of the Czech Academy of Sciences, Heyrovského nam. 2, 162 06 Prague, 6, Czech Republic
| | - Jiří Hodan
- Institute of Macromolecular Chemistry of the Czech Academy of Sciences, Heyrovského nam. 2, 162 06 Prague, 6, Czech Republic
| | - Olga Kočková
- Institute of Macromolecular Chemistry of the Czech Academy of Sciences, Heyrovského nam. 2, 162 06 Prague, 6, Czech Republic
| | - Szczepan Bednarz
- Cracow University of Technology, Faculty of Chemical Engineering and Technology, Department of Biotechnology and Physical Chemistry, Cracow, Poland
| | - Hynek Beneš
- Institute of Macromolecular Chemistry of the Czech Academy of Sciences, Heyrovského nam. 2, 162 06 Prague, 6, Czech Republic
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Chwastowski J, Guzik M, Bednarz S, Staroń P. Upcycling Waste Streams from a Biorefinery Process-A Case Study on Cadmium and Lead Biosorption by Two Types of Biopolymer Post-Extraction Biomass. Molecules 2023; 28:6345. [PMID: 37687174 PMCID: PMC10488894 DOI: 10.3390/molecules28176345] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Revised: 08/28/2023] [Accepted: 08/29/2023] [Indexed: 09/10/2023] Open
Abstract
This study investigated the possibility of using the spent kind of biomass of Pseudomonas putida CA-3 and Zobelella denitrificans MW1 obtained after the pilot-scale production of polyhydroxyalkanoates (PHAs) as a biosorbent for the bioremediation of aqueous solutions containing toxic cadmium and lead ions. The material was characterized by means of scanning electron microscopy, Fourier-transformed infrared spectroscopy, nuclear magnetic resonance spectroscopy and amino acid profiling. To check the sorption capacity of spent biomass against Pb and Cd ions, equilibrium studies were performed. To learn about the nature of the sorption process, kinetic modelling was carried out and the obtained results showed that the adsorption process is best described by the pseudo-second-order kinetic model (PSO), which suggests that the sorption process is connected with the chemical bonding of the ions on the sorbent surface. Information provided by the amino acid profile made it possible to predict the adsorption mechanism and FTIR analysis proved the participation of different chemical groups in the removal process. According to the equilibrium studies, the best-fitted isotherm was the Freundlich model for all used materials and metal ions considering the correlation coefficient. Summarizing the results, the spent biomass after the PHA production is an effective biosorbent and can be reused for heavy metal bioremediation.
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Affiliation(s)
- Jarosław Chwastowski
- Department of Engineering and Chemical Technology, Kraków University of Technology, 24 Warszawska St., 31-155 Kraków, Poland; (S.B.); (P.S.)
| | - Maciej Guzik
- Jerzy Haber Institute of Catalysis and Surface Chemistry, Polish Academy of Sciences, Niezapominajek 8, 30-239 Kraków, Poland;
| | - Szczepan Bednarz
- Department of Engineering and Chemical Technology, Kraków University of Technology, 24 Warszawska St., 31-155 Kraków, Poland; (S.B.); (P.S.)
| | - Paweł Staroń
- Department of Engineering and Chemical Technology, Kraków University of Technology, 24 Warszawska St., 31-155 Kraków, Poland; (S.B.); (P.S.)
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Bujok S, Konefał R, Nevoralová M, Bednarz S, Mielczarek K, Beneš H. Cation identity in clay-polyelectrolyte self-assembled hydrogels: Rheological and NMR study of the polyitaconate-counterion interactions. Colloids Surf A Physicochem Eng Asp 2023. [DOI: 10.1016/j.colsurfa.2022.130346] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Bednarz S, Bujok S, Mielczarek K, Świergosz T, Wierzbicki S, Konefał R, Konefał M, Nevoralová M, Pavlova E, Beneš H. Synthesis of low-molecular weight itaconic acid polymers as nanoclay dispersants and dispersion stabilizers. POLYMER 2022. [DOI: 10.1016/j.polymer.2022.125614] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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Bujok S, Konefał M, Konefał R, Nevoralová M, Bednarz S, Mielczarek K, Beneš H. Insight into the aqueous Laponite® nanodispersions for self-assembled poly(itaconic acid) nanocomposite hydrogels: The effect of multivalent phosphate dispersants. J Colloid Interface Sci 2021; 610:1-12. [PMID: 34922067 DOI: 10.1016/j.jcis.2021.12.055] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2021] [Revised: 08/31/2021] [Accepted: 12/08/2021] [Indexed: 10/19/2022]
Abstract
HYPOTHESIS We hypothesize, that physical network between Laponite® nanoparticles and high molecular weight polyelectrolyte formed by mixing of Laponite® nanodispersion (containing multivalent phosphate dispersant) and polyelectrolyte solution is strongly influenced by the type and content of dispersant, which forms electric double layer (EDL) closely to the Laponite® edges. Thus, optimum dispersant concentration is necessary to overcome clay-clay interactions (excellent clay delamination), but should not be exceeded, what would result in the EDL compression and weakening of attractions forming clay-polyelectrolyte network. Thus, deeper investigation of Laponite® nanodispersions is highly demanded since it would enable to better design the self-assembled clay-polyelectrolyte hydrogels. EXPERIMENTS To study clay interparticle interactions in the presence of various multivalent phosphates, complementary methods providing wide nanodispersion characterization have been applied: zeta potential measurement and SAXS technique (electrostatic interactions), oscillatory rheology (nanodispersion physical state) and NMR experiments (ion immobilization degree). FINDINGS It was found that multivalent phosphates induce and tune strength of clay-polyelectrolyte interactions forming hydrogel network in terms of varying EDL on the Laponite® edges. Moreover, phosphate dispersing efficiency depends on the molecular size, chemical structure, and valence of the anion; its potential as efficient dispersant for hydrogel preparation can be evaluated by estimation of anion charge density.
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Affiliation(s)
- Sonia Bujok
- Institute of Macromolecular Chemistry, CAS, Heyrovského nám. 2, Prague 6 162 06, Czech Republic.
| | - Magdalena Konefał
- Institute of Macromolecular Chemistry, CAS, Heyrovského nám. 2, Prague 6 162 06, Czech Republic
| | - Rafał Konefał
- Institute of Macromolecular Chemistry, CAS, Heyrovského nám. 2, Prague 6 162 06, Czech Republic
| | - Martina Nevoralová
- Institute of Macromolecular Chemistry, CAS, Heyrovského nám. 2, Prague 6 162 06, Czech Republic
| | - Szczepan Bednarz
- Faculty of Chemical Engineering and Technology, Cracow University of Technology, Warszawska 24, Cracow 31-155, Poland
| | - Kacper Mielczarek
- Faculty of Chemical Engineering and Technology, Cracow University of Technology, Warszawska 24, Cracow 31-155, Poland
| | - Hynek Beneš
- Institute of Macromolecular Chemistry, CAS, Heyrovského nám. 2, Prague 6 162 06, Czech Republic
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Wierzbicki S, Mielczarek K, Topa-Skwarczyńska M, Mokrzyński K, Ortyl J, Bednarz S. Visible light-induced photopolymerization of Deep Eutectic Monomers, based on methacrylic acid and tetrabutylammonium salts with different anion structures. Eur Polym J 2021. [DOI: 10.1016/j.eurpolymj.2021.110836] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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Żelazny S, Żukowski W, Bogdał D, Bednarz S, Kasprzyk W, Świergosz T. Recovery and Characterization Studies of Post-Production Alloy Waste from the Automotive Industry. Materials (Basel) 2020; 13:ma13245600. [PMID: 33302520 PMCID: PMC7763364 DOI: 10.3390/ma13245600] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/12/2020] [Revised: 12/04/2020] [Accepted: 12/06/2020] [Indexed: 11/16/2022]
Abstract
Superalloys provide high corrosion resistance and are widely used as high-performance materials in aerospace, automotive, chemical, and other industries. Herein, the investigation into the characteristics and properties of alloy waste; Inconel 625, Inconel 718, and Titanium Grade 5, from the automotive industry, was introduced as a result of a recovery in various processes. For this reason, the following procedures were carried as follows; the washing process to remove oil from the swarf was evaluated using several commercial agents and for the process of thermal disposal of processing fluids, a temperature of 900 °C was used in a muffle furnace without air access. The presented studies show that the commercially available series of washing agents did not modify the composition of the surface. However, the high temperatures during the calcination of oil residues are affecting the elemental composition of the alloys. According to the results of the analyses, it is not possible to remove 100% of the oil residues from alloy waste using washing agents based on light organic fractions; however, the effectiveness of this method reaches 99%. In this report, accurate SEM-EDS analyses show changes that occur on the surface after machining and removal of processing fluids. The NMR and GC/MS investigations indicate contaminants as a mixture of aliphatic and cycloaliphatic hydrocarbons with carbon numbers from C8–C30.
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Affiliation(s)
- Sylwester Żelazny
- Department of Inorganic Chemistry, Faculty of Chemical Engineering and Technology, Cracow University of Technology, Warszawska 24, 31-155 Kraków, Poland; (S.Ż.); (W.Ż.)
| | - Witold Żukowski
- Department of Inorganic Chemistry, Faculty of Chemical Engineering and Technology, Cracow University of Technology, Warszawska 24, 31-155 Kraków, Poland; (S.Ż.); (W.Ż.)
| | - Dariusz Bogdał
- Department of Biotechnology and Physical Chemistry, Faculty of Chemical Engineering and Technology, Cracow University of Technology, Warszawska 24, 31-155 Kraków, Poland; (S.B.); (W.K.)
- Correspondence: (D.B.); (T.Ś.)
| | - Szczepan Bednarz
- Department of Biotechnology and Physical Chemistry, Faculty of Chemical Engineering and Technology, Cracow University of Technology, Warszawska 24, 31-155 Kraków, Poland; (S.B.); (W.K.)
| | - Wiktor Kasprzyk
- Department of Biotechnology and Physical Chemistry, Faculty of Chemical Engineering and Technology, Cracow University of Technology, Warszawska 24, 31-155 Kraków, Poland; (S.B.); (W.K.)
| | - Tomasz Świergosz
- Department of Analytical Chemistry, Faculty of Chemical Engineering and Technology, Cracow University of Technology, Warszawska 24, 31-155 Kraków, Poland
- Correspondence: (D.B.); (T.Ś.)
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Kasprzyk W, Bednarz S, Bogdał D, Ameer GA, Swiergosz T. Cyclodextrin-modified poly(octamethylene citrate) polymers towards enhanced sorption properties. Soft Matter 2020; 16:3311-3318. [PMID: 32175550 DOI: 10.1039/c9sm02075f] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Herein, we describe the synthesis of poly(1,8-octamethylene citrate) materials modified in the bulk with 2-hydroxypropyl-β-cyclodextrin (cPOCCD), biodegradable elastomers with intrinsic sorption properties for drug delivery. The chemical structure, physicochemical properties, in vitro drug loading and release profiles of cPOCCD were investigated. Thus, cPOCCD polyesters absorb the studied drugs more effective and release them for a longer period of time than poly(1,8-octamethylene citrate) materials not containing cyclodextrins.
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Affiliation(s)
- Wiktor Kasprzyk
- Department of Biotechnology and Physical Chemistry, Faculty of Chemical Engineering and Technology, Cracow University of Technology, 24 Warszawska St., 31-155 Kraków, Poland.
| | - Szczepan Bednarz
- Department of Biotechnology and Physical Chemistry, Faculty of Chemical Engineering and Technology, Cracow University of Technology, 24 Warszawska St., 31-155 Kraków, Poland.
| | - Dariusz Bogdał
- Department of Biotechnology and Physical Chemistry, Faculty of Chemical Engineering and Technology, Cracow University of Technology, 24 Warszawska St., 31-155 Kraków, Poland.
| | - Guillermo A Ameer
- Department of Biomedical Engineering, Northwestern University, Evanston, IL 60208, USA
| | - Tomasz Swiergosz
- Department of Analytical Chemistry, Faculty of Chemical Engineering and Technology, Cracow University of Technology, 24 Warszawska St., 31-155 Kraków, Poland
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Mielczarek K, Łabanowska M, Kurdziel M, Konefał R, Beneš H, Bujok S, Kowalski G, Bednarz S. High‐Molecular‐Weight Polyampholytes Synthesized via Daylight‐Induced, Initiator‐Free Radical Polymerization of Renewable Itaconic Acid. Macromol Rapid Commun 2020; 41:e1900611. [DOI: 10.1002/marc.201900611] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2019] [Revised: 01/03/2020] [Indexed: 11/07/2022]
Affiliation(s)
- Kacper Mielczarek
- Faculty of Chemical Engineering and TechnologyCracow University of Technology Warszawska 24 31‐155 Cracow Poland
| | - Maria Łabanowska
- Faculty of ChemistryJagiellonian University Gronostajowa 2 30‐387 Cracow Poland
| | - Magdalena Kurdziel
- Faculty of ChemistryJagiellonian University Gronostajowa 2 30‐387 Cracow Poland
| | - Rafał Konefał
- Institute of Macromolecular Chemistry CAS Heyrovsky Sq. 2 162 06 Prague 6 Czech Republic
| | - Hynek Beneš
- Institute of Macromolecular Chemistry CAS Heyrovsky Sq. 2 162 06 Prague 6 Czech Republic
| | - Sonia Bujok
- Institute of Macromolecular Chemistry CAS Heyrovsky Sq. 2 162 06 Prague 6 Czech Republic
| | - Grzegorz Kowalski
- Faculty of Food TechnologyUniversity of Agriculture in Krakow Balicka 122 30‐149 Cracow Poland
| | - Szczepan Bednarz
- Faculty of Chemical Engineering and TechnologyCracow University of Technology Warszawska 24 31‐155 Cracow Poland
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Kasprzyk W, Swiergosz T, Bednarz S, Walas K, Bashmakova NV, Bogdał D. Luminescence phenomena of carbon dots derived from citric acid and urea - a molecular insight. Nanoscale 2018; 10:13889-13894. [PMID: 29999091 DOI: 10.1039/c8nr03602k] [Citation(s) in RCA: 112] [Impact Index Per Article: 18.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
In this report, we present the results of our investigations into the elucidation of the chemical structure of moieties responsible for the blue and green luminescence of CDs derived from the microwave-assisted pyrolysis of citric acid in the presence of urea. The molecular fluorophore that forms during the synthesis of green fluorescing CDs is 4-hydroxy-1H-pyrrolo[3,4-c]pyridine-1,3,6(2H,5H)-trione (HPPT).
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Affiliation(s)
- Wiktor Kasprzyk
- Department of Biotechnology and Physical Chemistry, Faculty of Chemical Engineering and Technology, Cracow University of Technology, 24 Warszawska St., 32-048 Krakow, Poland.
| | - Tomasz Swiergosz
- Department of Analytical Chemistry, Faculty of Chemical Engineering and Technology, Cracow University of Technology, 24 Warszawska St., 32-048 Krakow, Poland
| | - Szczepan Bednarz
- Department of Biotechnology and Physical Chemistry, Faculty of Chemical Engineering and Technology, Cracow University of Technology, 24 Warszawska St., 32-048 Krakow, Poland.
| | - Karolina Walas
- Department of Biotechnology and Physical Chemistry, Faculty of Chemical Engineering and Technology, Cracow University of Technology, 24 Warszawska St., 32-048 Krakow, Poland.
| | - Natalia V Bashmakova
- Department of Experimental Physics, Faculty of Physics, Taras Shevchenko National University of Kyiv, Kyiv, Ukraine
| | - Dariusz Bogdał
- Department of Biotechnology and Physical Chemistry, Faculty of Chemical Engineering and Technology, Cracow University of Technology, 24 Warszawska St., 32-048 Krakow, Poland.
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Abstract
Novel transparent and flexible silicone materials with fluorescent properties were developed by incorporation of derivative of 2-pyridone into silicone matrix.
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Affiliation(s)
- Wiktor Kasprzyk
- Department of Biotechnology and Physical Chemistry
- Faculty of Chemical Engineering and Technology
- Cracow University of Technology
- 32-048 Krakow
- Poland
| | - Piotr Krzywda
- Department of Biotechnology and Physical Chemistry
- Faculty of Chemical Engineering and Technology
- Cracow University of Technology
- 32-048 Krakow
- Poland
| | - Szczepan Bednarz
- Department of Biotechnology and Physical Chemistry
- Faculty of Chemical Engineering and Technology
- Cracow University of Technology
- 32-048 Krakow
- Poland
| | - Dariusz Bogdał
- Department of Biotechnology and Physical Chemistry
- Faculty of Chemical Engineering and Technology
- Cracow University of Technology
- 32-048 Krakow
- Poland
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13
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Abstract
Citric acid was reacted with α,β-diamines, β-amino thiols and β-amino alcohols to produce fluorescent derivatives of 2-pyridone (QY up to ∼79%). The chemical structures of these compounds were confirmed by analyses of 1D, 2D NMR and ESI-MS data.
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Affiliation(s)
- Wiktor Kasprzyk
- Department of Biotechnology and Physical Chemistry
- Faculty of Chemical Engineering and Technology
- Cracow University of Technology
- 32-048 Krakow
- Poland
| | - Szczepan Bednarz
- Department of Biotechnology and Physical Chemistry
- Faculty of Chemical Engineering and Technology
- Cracow University of Technology
- 32-048 Krakow
- Poland
| | - Paweł Żmudzki
- Department of Medicinal Chemistry
- Jagiellonian University Medical College
- 30-688 Kraków
- Poland
| | - Mateusz Galica
- Department of Biotechnology and Physical Chemistry
- Faculty of Chemical Engineering and Technology
- Cracow University of Technology
- 32-048 Krakow
- Poland
| | - Dariusz Bogdał
- Department of Biotechnology and Physical Chemistry
- Faculty of Chemical Engineering and Technology
- Cracow University of Technology
- 32-048 Krakow
- Poland
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Bednarz S, Fluder M, Galica M, Bogdal D, Maciejaszek I. Synthesis of hydrogels by polymerization of itaconic acid-choline chloride deep eutectic solvent. J Appl Polym Sci 2014. [DOI: 10.1002/app.40608] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Szczepan Bednarz
- Department of Biotechnology and Physical Chemistry; Cracow University of Technology; Warszawska 24 31-155 Krakow Poland
| | - Maria Fluder
- Department of Biotechnology and Physical Chemistry; Cracow University of Technology; Warszawska 24 31-155 Krakow Poland
| | - Mateusz Galica
- Department of Biotechnology and Physical Chemistry; Cracow University of Technology; Warszawska 24 31-155 Krakow Poland
| | - Dariusz Bogdal
- Department of Biotechnology and Physical Chemistry; Cracow University of Technology; Warszawska 24 31-155 Krakow Poland
| | - Ireneusz Maciejaszek
- Department of Refrigeration and Food Concentrates; Agriculture University of Cracow; Balicka 122 30-149 Krakow Poland
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Abstract
The possible origin of luminescent properties of biodegradable photoluminescent polyesters (BPLPs) has been revealed by isolation and identification of luminescent agent from the hydrolyzate of BPLP. Elemental analysis, ESI-MS, (1)H, (13)C, 2D HSQC and COSY NMR spectra confirmed the chemical structure as 5-oxo-2,3-dihydro-5H-[1,3]thiazolo[3,2-a]pyridine-3,7-dicarboxylic acid (TPA).
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Affiliation(s)
- Wiktor Kasprzyk
- Cracow University of Technology, Faculty of Chemical Engineering and Technology, Department of Biotechnology and Renewable Materials, Warszawska 24 St., 31-155 Krakow, Poland.
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Affiliation(s)
- Marcin Lukasiewicz
- Department of Food Technology; University of Agriculture in Krakow; Krakow Poland
| | - Pawel Ptaszek
- Department of Food Technology; University of Agriculture in Krakow; Krakow Poland
| | - Anna Ptaszek
- Department of Food Technology; University of Agriculture in Krakow; Krakow Poland
| | - Szczepan Bednarz
- Faculty of Chemical Engineering and Technology; Cracow University of Technology; Krakow Poland
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Ptaszek A, Lukasiewicz M, Bednarz S. Environmental friendly polysaccharide modification - rheological properties of oxidized starches water systems. STARCH-STARKE 2012. [DOI: 10.1002/star.201200032] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Bednarz S, Ryś B, Bogdał D. Application of Hydrogen Peroxide Encapsulated in Silica Xerogels to Oxidation Reactions. Molecules 2012; 17:8068-78. [PMID: 22763743 PMCID: PMC6268296 DOI: 10.3390/molecules17078068] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2012] [Revised: 06/18/2012] [Accepted: 06/25/2012] [Indexed: 11/16/2022] Open
Affiliation(s)
- Szczepan Bednarz
- Cracow University of Technology, Warszawska 24, 31-155 Krakow, Poland.
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Lukasiewicz M, Bednarz S, Ptaszek A. Environmental friendly polysaccharide modification - microwave-assisted oxidation of starch. STARCH-STARKE 2011. [DOI: 10.1002/star.201000124] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Affiliation(s)
- D. Bogdal
- a Faculty of Chemical Engineering and Technology , Politechnika Krakowska , Krakow , Poland
| | - M. Lukasiewicz
- b Department of Carbohydrates Technology , Agricultural University of Krakow , Krakow , Poland
| | - J. Pielichowski
- a Faculty of Chemical Engineering and Technology , Politechnika Krakowska , Krakow , Poland
| | - S. Bednarz
- a Faculty of Chemical Engineering and Technology , Politechnika Krakowska , Krakow , Poland
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Sapiński A, Swiecicka-Konarska T, Perkowska A, Zynda A, Bednarz S. [Measurement of hypertension in infants with sphygmomanometer-S]. Pol Tyg Lek 1991; 46:53-4. [PMID: 1845669] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Hundred sixty four measurements of the arterial blood pressure were performed in 53 newborns aged between 1 and 9 days. sphygmomanometer-S used for this purpose is a microcomputer which measures arterial blood pressure basing on the amplitude of the registered pulse waves. Obtained results of the systolic and mean blood pressure values were comparable with those reported by other authors whereas diastolic blood pressure values were somewhat lower.
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Affiliation(s)
- A Sapiński
- Oddziału Noworodkowego Specjalistycznego ZOZ nad Matka i Dzieckiem, Poznaniu
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Basista M, Bednarz S, Rembiasz K, Grodzińska L, Kostka-Trabka E. The role of prostaglandin E2 in duodenal mucosa of healthy subjects and duodenal ulcer patients. Hepatogastroenterology 1986; 33:271-4. [PMID: 3804186] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
The distribution of the mucosal PGE2-generating capacity was bioassayed in the duodenum of 17 patients with duodenal ulcer (age range 20-58 years), and in 17 subjects (age range 21-57 years) who did not suffer from this disease. The age of the subjects within both groups was precisely matched in pairs. In contrast to the "young" controls or the "young" patients (under 37) or the "old" patients (over 37) the "old" control group of subjects showed an age-dependent increase in the mucosal PGE2 generation. It is concluded that with increasing age the mucosal PGE2 plays an increasingly important role in the protection against duodenal ulcers.
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