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Such A, Wisła-Świder A, Węsierska E, Nowak E, Szatkowski P, Kopcińska J, Koronowicz A. Edible chitosan-alginate based coatings enriched with turmeric and oregano additives: Formulation, antimicrobial and non-cytotoxic properties. Food Chem 2023; 426:136662. [PMID: 37356247 DOI: 10.1016/j.foodchem.2023.136662] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2022] [Revised: 05/30/2023] [Accepted: 06/16/2023] [Indexed: 06/27/2023]
Abstract
In our study we developed the edible chitosan and alginate coatings with turmeric or oregano additives. The objective of the research was to evaluate the dose-dependent cytotoxicity of films. In cell line studies on HepG2 and BJ cells, they were shown to be non-cytotoxic materials (IC50% was not reached). For HepG2 increase in cell proliferation was observed for 3, 4, and 7 mg/mL of OS3 (124,79±9,21; 162,4±10,46; 165,37±18,44) after 72 h. In BJ cells, no significant decrease in proliferation was noted after 24- and 48-hour exposure to OS0 and OS1 (1-7 mg/ml). The addition of oregano (1% v/v) resulted in films with higher elongation at break and 40% higher tensile strength compared to the base (OS0) film. Use of additives significantly increased the thermal stability of the complexes (by an average of 10 °C). Coatings were tested on tofu and had proven potent antimicrobial properties.
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Affiliation(s)
- Aleksandra Such
- Department of Human Nutrition and Dietetics, Faculty of Food Technology, University of Agriculture in Krakow, Balicka 122, Krakow 30-149, Poland.
| | - Anna Wisła-Świder
- Department of Chemistry, Faculty of Food Technology, University of Agriculture in Krakow, Balicka 122, Krakow 30-149, Poland.
| | - Ewelina Węsierska
- Department of Animal Product Technology, Faculty of Food Technology, University of Agriculture in Krakow, Balicka 122, Krakow 30-149, Poland.
| | - Ewelina Nowak
- Department of Chemistry, Faculty of Food Technology, University of Agriculture in Krakow, Balicka 122, Krakow 30-149, Poland.
| | - Piotr Szatkowski
- Department of Biomaterials and Composites, Faculty of Materials Science and Ceramics, AGH - University of Science and Technology, Al. Mickiewcza 30, Krakow 30-059, Poland.
| | - Joanna Kopcińska
- Department of Applied Mathematics, Faculty of Environmental Engineering and Land Surveying, University of Agriculture in Kraków, Balicka 253c, Kraków 30-198, Poland.
| | - Aneta Koronowicz
- Department of Human Nutrition and Dietetics, Faculty of Food Technology, University of Agriculture in Krakow, Balicka 122, Krakow 30-149, Poland.
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Nowak E, Khachatryan G, Wisła-Świder A. Structural changes of different starches illuminated with linearly polarised visible light. Food Chem 2020; 344:128693. [PMID: 33248842 DOI: 10.1016/j.foodchem.2020.128693] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [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: 05/06/2020] [Revised: 09/27/2020] [Accepted: 11/18/2020] [Indexed: 10/22/2022]
Abstract
Aqueous suspensions (30% w/w) of spelt, amaranth and wheat starches were illuminated with linearly polarised visible light for 5, 15, 25 and 50 h. For native and illuminated samples, the weight-average molecular weight, the radii of gyration of the starch polysaccharide chains, and the distribution of the amylopectin structural units of the illuminated starches were determined. The susceptibility to α-amylolysis together with the iodine-binding properties and crystalline structure were studied for each of the starch samples. Illumination with linearly polarised visible light indicated changes in the crystalline structure of the polysaccharide chains and led to an increased enzymatic hydrolysis rate constant for the first stage of hydrolysis and final hydrolysis extent. Changes in the molecular structure of the starch indicate that illumination of the starches induced depolymerisation-repolymerisation reactions of starch polysaccharide chains. That rearrangements of the molecular starch structure depend on the illumination time and the botanical source of the starch.
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Affiliation(s)
- Ewelina Nowak
- Faculty of Food Technology, University of Agriculture, 122 Balicka Str., 30-149 Cracow, Poland.
| | - Gohar Khachatryan
- Faculty of Food Technology, University of Agriculture, 122 Balicka Str., 30-149 Cracow, Poland
| | - Anna Wisła-Świder
- Faculty of Food Technology, University of Agriculture, 122 Balicka Str., 30-149 Cracow, Poland
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Nowak E, Wisła-Świder A, Khachatryan G, Fiedorowicz M, Danel K. Possible sensor applications of selected DNA-surfactant complexes. Eur Biophys J 2019; 48:371-381. [PMID: 31004192 DOI: 10.1007/s00249-019-01367-2] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2018] [Revised: 09/07/2018] [Accepted: 04/09/2019] [Indexed: 12/21/2022]
Abstract
Although much research has been performed on DNA complexes carrying long alkyl chains (C10, C16, and C18), there is no information about physicochemical characterization of synthesized composites with allyl imidazole-based ionic liquids and quaternary ammonium salts with n-butyl chains. Here, complexes were synthesized by ion-exchange reactions between sonicated DNA and three ionic liquids (ILs) formed from two imidazole-based compounds, 1-allyl-3-methylimidazolium bromide (Amim) or 1-butyl-3-methylimidazolium bromide (Bmim), and from the quaternary ammonium salt tetra-n-butylammonium bromide (TBAB). Signals in UV-Vis, IR, and CD spectra indicating inclusion of small molecules into the DNA structure confirmed the formation of DNA complexes. Both IR and CD spectra indicated that the B-form conformation of the DNA did not change after the formation of the complexes. Similarly, X-ray diffraction patterns revealed that the formation of IL-DNA complexes did not change the structure of native B-form DNA. Molecular weight (Mw) and radii of gyration (Rg) values of IL-DNA complex chains, established by high-performance size exclusion chromatography coupled with multiangle-laser light-scattering with a differential refractive index detector, were significantly lower than those values found for native DNA molecules due to DNA fragmentation by sonication during complex formation and the direct effects of the IL on the DNA. Scanning electron microscopy images indicate the formation of nanofibres in DNA-Amim and DNA-Bmim complexes, whereas the formation of nanowires was found in samples of DNA-TBAB complexes. Changes in optical properties confirmed by UV and photoluminescence make DNA-IL complexes potential candidates for biosensor application.
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Affiliation(s)
- Ewelina Nowak
- Department of Chemistry, University of Agriculture, 122 Balicka Str., 30-149, Cracow, Poland.
| | - Anna Wisła-Świder
- Department of Chemistry, University of Agriculture, 122 Balicka Str., 30-149, Cracow, Poland
| | - Gohar Khachatryan
- Department of Chemistry, University of Agriculture, 122 Balicka Str., 30-149, Cracow, Poland
| | - Maciej Fiedorowicz
- Department of Chemistry, University of Agriculture, 122 Balicka Str., 30-149, Cracow, Poland
| | - Krzysztof Danel
- Department of Chemistry, University of Agriculture, 122 Balicka Str., 30-149, Cracow, Poland
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Antonkiewicz J, Baran A, Pełka R, Wisła-Świder A, Nowak E, Konieczka P. A mixture of cellulose production waste with municipal sewage as new material for an ecological management of wastes. Ecotoxicol Environ Saf 2019; 169:607-614. [PMID: 30496992 DOI: 10.1016/j.ecoenv.2018.11.070] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/06/2018] [Revised: 11/15/2018] [Accepted: 11/16/2018] [Indexed: 05/17/2023]
Abstract
Chemical contaminants present in cellulose production waste and municipal sewage sludge condition the necessity to treat these wastes before they are introduced into the environment. Environmental use of the these wastes appears to be justified owing to the content of organic substances as well as the considerable fertilising value. The aim of the study was to assess chemical composition and ecotoxicity of cellulose production waste and municipal sewage sludge in terms of their eco-friendly application. The assessment was done based on the established soil environment according to regulations in Poland. The research on the chemical composition of the wastes was conducted under laboratory conditions, determining the content of macroelements, microelements and heavy metals with respect to using these wastes in the environment. Phytotoxkit and Microtox tests were performed in order to determine the ecotoxicity of the wastes in the aspect of their environmental use. It was established that, compared to the cellulose production waste, the municipal sewage sludge used in the incubation experiment had a higher content of macroelements and microelements. The content of heavy metals in the waste did not exceed the permissible content that conditions their use in agriculture and reclamation. Based on the results of bioassays it was established that the cellulose production waste was toxic, whereas the combination of cellulose production waste and sewage sludge was found to be of low toxicity to test organisms. The applied wastes and their mixtures were ranked according to phytotoxicity in the following order: cellulose production waste > cellulose production waste + soil > cellulose production waste + sewage sludge. The research results indicate that waste mixtures qualify for environmental use. With respect to the variable chemical composition of cellulose production waste and municipal sewage sludge as well as their ecotoxicity, it was established that each batch intended for environmental use must be subjected to chemical analysis and ecotoxicological tests.
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Affiliation(s)
- Jacek Antonkiewicz
- Department of Agricultural and Environmental Chemistry, Faculty of Agriculture and Economics, University of Agriculture in Krakow, Av. Mickiewicza 21, 31-120 Krakow, Poland.
| | - Agnieszka Baran
- Department of Agricultural and Environmental Chemistry, Faculty of Agriculture and Economics, University of Agriculture in Krakow, Av. Mickiewicza 21, 31-120 Krakow, Poland.
| | - Robert Pełka
- Department of Agricultural and Environmental Chemistry, Faculty of Agriculture and Economics, University of Agriculture in Krakow, Av. Mickiewicza 21, 31-120 Krakow, Poland.
| | - Anna Wisła-Świder
- Institute of Chemistry, Faculty of Food Technology, University of Agriculture in Krakow, Str. Balicka 122, 30-149 Krakow, Poland.
| | - Ewelina Nowak
- Institute of Chemistry, Faculty of Food Technology, University of Agriculture in Krakow, Str. Balicka 122, 30-149 Krakow, Poland.
| | - Piotr Konieczka
- Department of Analytical Chemistry, Faculty of Chemistry, Gdańsk University of Technology, Str. Gabriela Narutowicza 11/12, 80-233 Gdańsk, Poland.
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