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Maculewicz J, Białk-Bielińska A, Kowalska D, Stepnowski P, Stolte S, Beil S, Gajewicz-Skretna A, Dołżonek J. Bioconcentration potential of ionic liquids: New data on membrane partitioning and its comparison with predictions obtained by COSMOmic. Biochim Biophys Acta Biomembr 2024; 1866:184320. [PMID: 38583701 DOI: 10.1016/j.bbamem.2024.184320] [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] [Subscribe] [Scholar Register] [Received: 12/11/2023] [Revised: 03/19/2024] [Accepted: 04/01/2024] [Indexed: 04/09/2024]
Abstract
Ionic liquids (ILs) have recently gained significant attention in both the scientific community and industry, but there is a limited understanding of the potential risks they might pose to the environment and human health, including their potential to accumulate in organisms. While membrane and storage lipids have been considered as primary sorption phases driving bioaccumulation, in this study we used an in vitro tool known as solid-supported lipid membranes (SSLMs) to investigate the affinity of ILs to membrane lipid - phosphatidylcholine and compare the results with an existing in silico model. Our findings indicate that ILs may have a strong affinity for the lipids that form cell membranes, with the key factor being the length of the cation's side chain. For quaternary ammonium cations, increase in membrane affinity (logMA) was observed from 3.45 ± 0.06 at 10 carbon atoms in chain to 4.79 ± 0.06 at 14 carbon atoms. We also found that the anion can significantly affect the membrane partitioning of the cation, even though the anions themselves tend to have weaker interactions with phospholipids than the cations of ILs. For 1-methyl-3-octylimidazolium cation the presence of tricyanomethanide anion caused increase in logMA to 4.23 ± 0.06. Although some of our data proved to be consistent with predictions made by the COSMOmic model, there are also significant discrepancies. These results suggest that further research is needed to improve our understanding of the mechanisms and structure-activity relationships involved in ILs bioconcentration and to develop more accurate predictive models.
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Affiliation(s)
- Jakub Maculewicz
- Department of Environmental Analysis, Faculty of Chemistry, University of Gdańsk, Wita Stwosza 63, 80-308 Gdańsk, Poland
| | - Anna Białk-Bielińska
- Department of Environmental Analysis, Faculty of Chemistry, University of Gdańsk, Wita Stwosza 63, 80-308 Gdańsk, Poland
| | - Dorota Kowalska
- Department of Environmental Analysis, Faculty of Chemistry, University of Gdańsk, Wita Stwosza 63, 80-308 Gdańsk, Poland
| | - Piotr Stepnowski
- Department of Environmental Analysis, Faculty of Chemistry, University of Gdańsk, Wita Stwosza 63, 80-308 Gdańsk, Poland
| | - Stefan Stolte
- Institute of Water Chemistry, TU Dresden, 01062 Dresden, Germany
| | - Stephan Beil
- Institute of Water Chemistry, TU Dresden, 01062 Dresden, Germany
| | - Agnieszka Gajewicz-Skretna
- Laboratory of Environmental Chemoinformatics, Faculty of Chemistry, University of Gdańsk, Wita Stwosza 63, 80-308 Gdańsk, Poland
| | - Joanna Dołżonek
- Department of Environmental Analysis, Faculty of Chemistry, University of Gdańsk, Wita Stwosza 63, 80-308 Gdańsk, Poland.
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Kowalska D, Dołżonek J, Żamojć K, Samsonov SA, Maszota-Zieleniak M, Makowska J, Stepnowski P, Białk-Bielińska A, Wyrzykowski D. Insights into the interaction of human serum albumin with ionic liquids - Thermodynamic, spectroscopic and molecular modelling studies. Int J Biol Macromol 2023; 249:125883. [PMID: 37499721 DOI: 10.1016/j.ijbiomac.2023.125883] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [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: 05/22/2023] [Revised: 07/12/2023] [Accepted: 07/17/2023] [Indexed: 07/29/2023]
Abstract
Human serum albumin (HSA) effectively binds different types of low-molecular-weight compounds and thus enables their distribution in living organisms. Recently, it has been reported that the protein-ligand interactions play a crucial role in bioaccumulation processes and provide an important sorption phase, especially for ionogenic compounds. Therefore, the binding interactions of such compounds with proteins are the subject of an ongoing interest in environmental and life sciences. In this paper, the influence of some counter-ions, namely [B(CN)4]- and [C(CN)3]- on the affinity of the [IM1-12]+ towards HSA has been investigated and discussed based on experimental methods (isothermal titration calorimetry and steady-state fluorescence spectroscopy) and molecular dynamics-based computational approaches. Furthermore, the thermal stability of the resulting HSA/ligand complexes was assessed using DSC and CD spectroscopy. As an outcome of the work, it has been ascertained that the protein is able to bind simultaneously the ligands under study but in different regions of HSA. Thus, the presence in the system of [IM1-12]+ does not disturb the binding of [C(CN)3]- and [B(CN)4]-. The presented results provide important information on the presence of globular proteins and some ionogenic compounds in the distribution and bioaccumulation of ILs in the environment and living organisms.
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Affiliation(s)
- Dorota Kowalska
- Department of Environmental Analysis, Faculty of Chemistry, University of Gdańsk, Wita Stwosza 63, 80-308 Gdańsk, Poland
| | - Joanna Dołżonek
- Department of Environmental Analysis, Faculty of Chemistry, University of Gdańsk, Wita Stwosza 63, 80-308 Gdańsk, Poland.
| | - Krzysztof Żamojć
- Department of General and Inorganic Chemistry, Faculty of Chemistry, University of Gdańsk, Wita Stwosza 63, 80-308 Gdańsk, Poland
| | - Sergey A Samsonov
- Department of Theoretical Chemistry, Faculty of Chemistry, University of Gdańsk, Wita Stwosza 63, 80-308 Gdańsk, Poland
| | - Martyna Maszota-Zieleniak
- Department of Theoretical Chemistry, Faculty of Chemistry, University of Gdańsk, Wita Stwosza 63, 80-308 Gdańsk, Poland
| | - Joanna Makowska
- Department of General and Inorganic Chemistry, Faculty of Chemistry, University of Gdańsk, Wita Stwosza 63, 80-308 Gdańsk, Poland
| | - Piotr Stepnowski
- Department of Environmental Analysis, Faculty of Chemistry, University of Gdańsk, Wita Stwosza 63, 80-308 Gdańsk, Poland
| | - Anna Białk-Bielińska
- Department of Environmental Analysis, Faculty of Chemistry, University of Gdańsk, Wita Stwosza 63, 80-308 Gdańsk, Poland
| | - Dariusz Wyrzykowski
- Department of General and Inorganic Chemistry, Faculty of Chemistry, University of Gdańsk, Wita Stwosza 63, 80-308 Gdańsk, Poland
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Koczoń P, Bartyzel B, Iuliano A, Klensporf-Pawlik D, Kowalska D, Majewska E, Tarnowska K, Zieniuk B, Gruczyńska-Sękowska E. Chemical Structures, Properties, and Applications of Selected Crude Oil-Based and Bio-Based Polymers. Polymers (Basel) 2022; 14:polym14245551. [PMID: 36559918 PMCID: PMC9783367 DOI: 10.3390/polym14245551] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Revised: 12/07/2022] [Accepted: 12/12/2022] [Indexed: 12/23/2022] Open
Abstract
The growing perspective of running out of crude oil followed by increasing prices for all crude oil-based materials, e.g., crude oil-based polymers, which have a huge number of practical applications but are usually neither biodegradable nor environmentally friendly, has resulted in searching for their substitutes-namely, bio-based polymers. Currently, both these types of polymers are used in practice worldwide. Owing to the advantages and disadvantages occurring among plastics with different origin, in this current review data on selected popular crude oil-based and bio-based polymers has been collected in order to compare their practical applications resulting from their composition, chemical structure, and related physical and chemical properties. The main goal is to compare polymers in pairs, which have the same or similar practical applications, regardless of different origin and composition. It has been proven that many crude oil-based polymers can be effectively replaced by bio-based polymers without significant loss of properties that ensure practical applications. Additionally, biopolymers have higher potential than crude oil-based polymers in many modern applications. It is concluded that the future of polymers will belong to bio-based rather than crude oil-based polymers.
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Affiliation(s)
- Piotr Koczoń
- Department of Chemistry, Institute of Food Sciences, Warsaw University of Life Sciences, 02-776 Warsaw, Poland
| | - Bartłomiej Bartyzel
- Department of Morphological Sciences, Institute of Veterinary Medicine, Warsaw University of Life Sciences, 02-776 Warsaw, Poland
| | - Anna Iuliano
- Faculty of Chemistry, Warsaw University of Technology, 00-664 Warsaw, Poland
| | - Dorota Klensporf-Pawlik
- Department of Food Quality and Safety, Poznan University of Economics and Business, 61-875 Poznan, Poland
| | - Dorota Kowalska
- Department of Chemistry, Institute of Food Sciences, Warsaw University of Life Sciences, 02-776 Warsaw, Poland
| | - Ewa Majewska
- Department of Chemistry, Institute of Food Sciences, Warsaw University of Life Sciences, 02-776 Warsaw, Poland
| | - Katarzyna Tarnowska
- Department of Chemistry, Institute of Food Sciences, Warsaw University of Life Sciences, 02-776 Warsaw, Poland
| | - Bartłomiej Zieniuk
- Department of Chemistry, Institute of Food Sciences, Warsaw University of Life Sciences, 02-776 Warsaw, Poland
| | - Eliza Gruczyńska-Sękowska
- Department of Chemistry, Institute of Food Sciences, Warsaw University of Life Sciences, 02-776 Warsaw, Poland
- Correspondence:
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Lis H, Paszkiewicz M, Godlewska K, Maculewicz J, Kowalska D, Stepnowski P, Caban M. Ionic liquid-based functionalized materials for analytical chemistry. J Chromatogr A 2022; 1681:463460. [DOI: 10.1016/j.chroma.2022.463460] [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] [Received: 06/29/2022] [Revised: 08/26/2022] [Accepted: 08/29/2022] [Indexed: 11/25/2022]
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Śmiecińska K, Gugołek A, Kowalska D. Effects of Garlic (Allium sativum L.) and Ramsons (Allium ursinum L.) on Lipid Oxidation and the Microbiological Quality, Physicochemical Properties and Sensory Attributes of Rabbit Meat Burgers. Animals (Basel) 2022; 12:ani12151905. [PMID: 35892554 PMCID: PMC9367434 DOI: 10.3390/ani12151905] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Revised: 07/22/2022] [Accepted: 07/25/2022] [Indexed: 11/16/2022] Open
Abstract
Simple Summary Modern consumers often look for convenience foods that are fast and easy to prepare, such as burgers. Burgers can be made from different types of meat with various additives. Due to its high nutritional value and low calorie and fat content, rabbit meat can be used as a raw material for preparing burgers. Consumers are becoming increasingly aware of their food choices, and they tend to avoid synthetic and artificial ingredients in meat products, which can be toxic. In order to meet customer expectations, producers often replace synthetic additives with natural alternatives that extend the shelf life of meat products and enhance their taste and aroma. Garlic is widely used in the meat processing industry, and it pairs well with rabbit meat. The aim of this study was to evaluate the quality of rabbit meat burgers with the addition of garlic powder, ramsons powder or their combination. It was found that garlic powder and ramsons powder can be added to rabbit meat burgers to extend their shelf life and improve their sensory attributes. Abstract The aim of this study was to evaluate the quality of rabbit meat burgers with the addition of garlic (Allium Sativum L.) powder (G), ramsons (Allium ursinum L.) powder (R) or their combination (GR). The effects of additives on lipid oxidation, color parameters, microbiological quality and organoleptic properties of raw and oven-baked burgers were analyzed before and after refrigerated storage. Four meat formulations were prepared: control (C)—without additives, with the addition of G (0.35 g/100 g of meat), R (0.35 g/100 g of meat) and GR (0.35 g/100 g of meat each). The addition of GR induced an increase in pH and TBARS values in raw and oven-baked burgers. The pH of raw and oven-baked burgers was also affected by storage time (ST), and it was lower after 7 days of storage (ST7) than before storage (ST0). TBARS values were higher at ST7 only in raw burgers. The addition of R and GR decreased the values of color parameter L* (lightness) relative to G and C in raw and oven-baked burgers. The greatest changes in parameter a* (redness) were observed after the addition of R and GR, both before and after heat treatment. The values of parameter b* (yellowness) increased after the addition of R, GR (raw and oven-baked burgers) and G (raw burgers). In raw burgers, color saturation (C*) was higher in groups R and GR than in groups C and G, and the value of hue angle (h°) was lower in burgers with GR than in those with G and R. In oven-baked burgers, the values of C* and h° were lower in group GR than in the remaining treatments (C, G and R). In raw burgers, ST had no effect on the values of L*, whereas the values of parameters a*, b*, C* and h° were lower at ST7 than at ST0. In oven-baked burgers, the values of L* were higher at ST0 than at ST7, and the values of a*, b*, C* and h° were higher at ST7 than at ST0. The tested additives had no influence on the presence of off-odors in raw burgers. This parameter was affected by ST, and its value was lower at ST0 than at ST7. The appearance and overall acceptability of burgers were affected only by additives, and raw burgers containing GR received the lowest scores. After heat treatment, control burgers scored lowest for all attributes, whereas burgers with the addition of R and GR received the highest scores. The analyzed additives had no effect on the growth of Enterobacteriacea,Pseudomonas spp., lactic acid bacteria or total aerobic psychrotrophic bacteria. However, the counts of all identified bacteria increased at ST7. In conclusion, garlic powder and ramsons powder can be added to rabbit meat burgers to extend their shelf life and improve their eating quality.
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Affiliation(s)
- Katarzyna Śmiecińska
- Department of Commodity Science and Processing of Animal Raw Materials, University of Warmia and Mazury in Olsztyn, Oczapowskiego 5, 10-719 Olsztyn, Poland
- Correspondence:
| | - Andrzej Gugołek
- Department of Fur-Bearing Animal Breeding and Game Management, University of Warmia and Mazury in Olsztyn, Oczapowskiego 5, 10-719 Olsztyn, Poland;
| | - Dorota Kowalska
- Department of Small Livestock Breeding, National Research Institute of Animal Production, Balice, 32-083 Kraków, Poland;
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Koczoń P, Josefsson H, Michorowska S, Tarnowska K, Kowalska D, Bartyzel BJ, Niemiec T, Lipińska E, Gruczyńska-Sękowska E. The Influence of the Structure of Selected Polymers on Their Properties and Food-Related Applications. Polymers (Basel) 2022; 14:polym14101962. [PMID: 35631843 PMCID: PMC9146511 DOI: 10.3390/polym14101962] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2022] [Revised: 04/14/2022] [Accepted: 05/09/2022] [Indexed: 11/16/2022] Open
Abstract
Every application of a substance results from the macroscopic property of the substance that is related to the substance’s microscopic structure. For example, the forged park gate in your city was produced thanks to the malleability and ductility of metals, which are related to the ability of shifting of layers of metal cations, while fire extinguishing powders use the high boiling point of compounds related to their regular ionic and covalent structures. This also applies to polymers. The purpose of this review is to summarise and present information on selected food-related biopolymers, with special attention on their respective structures, related properties, and resultant applications. Moreover, this paper also highlights how the treatment method used affects the structure, properties, and, hence, applications of some polysaccharides. Despite a strong focus on food-related biopolymers, this review is addressed to a broad community of both material engineers and food researchers.
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Affiliation(s)
- Piotr Koczoń
- Department of Chemistry, Institute of Food Sciences, Warsaw University of Life Sciences, 02-776 Warsaw, Poland; (P.K.); (K.T.); (D.K.)
| | | | - Sylwia Michorowska
- Department of Bioanalysis and Drug Analysis, Faculty of Pharmacy, Medical University of Warsaw, 02-097 Warsaw, Poland;
| | - Katarzyna Tarnowska
- Department of Chemistry, Institute of Food Sciences, Warsaw University of Life Sciences, 02-776 Warsaw, Poland; (P.K.); (K.T.); (D.K.)
| | - Dorota Kowalska
- Department of Chemistry, Institute of Food Sciences, Warsaw University of Life Sciences, 02-776 Warsaw, Poland; (P.K.); (K.T.); (D.K.)
| | - Bartłomiej J. Bartyzel
- Department of Morphological Sciences, Institute of Veterinary Medicine, Warsaw University of Life Sciences, 02-776 Warsaw, Poland;
| | - Tomasz Niemiec
- Animals Nutrition Department, Institute of Animal Sciences, Warsaw University of Life Sciences, 02-786 Warsaw, Poland;
| | - Edyta Lipińska
- Department of Biotechnology, Microbiology and Food Evaluation, Institute of Food Sciences, Warsaw University of Life Sciences, 02-776 Warsaw, Poland;
| | - Eliza Gruczyńska-Sękowska
- Department of Chemistry, Institute of Food Sciences, Warsaw University of Life Sciences, 02-776 Warsaw, Poland; (P.K.); (K.T.); (D.K.)
- Correspondence:
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Świacka K, Maculewicz J, Kowalska D, Caban M, Smolarz K, Świeżak J. Presence of pharmaceuticals and their metabolites in wild-living aquatic organisms - Current state of knowledge. J Hazard Mater 2022; 424:127350. [PMID: 34607031 DOI: 10.1016/j.jhazmat.2021.127350] [Citation(s) in RCA: 34] [Impact Index Per Article: 17.0] [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: 07/16/2021] [Revised: 09/09/2021] [Accepted: 09/23/2021] [Indexed: 06/13/2023]
Abstract
In the last decades an increasing number of studies has been published concerning contamination of aquatic ecosystems with pharmaceuticals. Yet, the distribution of these chemical compounds in aquatic environments raises many questions and uncertainties. Data on the presence of selected pharmaceuticals in the same water bodies varies significantly between different studies. Therefore, since early 1990 s, wild organisms have been used in research on environmental contamination with pharmaceuticals. Indeed, pharmaceutical levels measured in biological matrices may better reflect their overall presence in the aquatic environments as such levels include not only direct exposure of a given organisms to a specific pollutant but also processes such as bioaccumulation and biomagnification. In the present paper, data concerning occurrence of pharmaceuticals in aquatic biota was reviewed. So far, pharmaceuticals have been studied mainly in fish and molluscs, with only a few papers available on crustaceans and macroalgae. The most commonly found pharmaceuticals both in freshwater and marine organisms are antibiotics, antidepressants and NSAIDS while there is no information about the presence of anticancer drugs in aquatic organisms. Furthermore, only single studies were conducted in Africa and Australia. Hence, systematization of up-to-date knowledge, the main aim of this review, is needed for further research targeting.
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Affiliation(s)
- Klaudia Świacka
- Department of Experimental Ecology of Marine Organisms, Institute of Oceanography, University of Gdańsk, Av. Pilsudskiego 46, 81-378 Gdynia, Poland
| | - Jakub Maculewicz
- Department of Environmental Analysis, Faculty of Chemistry, University of Gdańsk, Wita Stwosza 63, 80-308 Gdańsk, Poland.
| | - Dorota Kowalska
- Department of Environmental Analysis, Faculty of Chemistry, University of Gdańsk, Wita Stwosza 63, 80-308 Gdańsk, Poland
| | - Magda Caban
- Department of Environmental Analysis, Faculty of Chemistry, University of Gdańsk, Wita Stwosza 63, 80-308 Gdańsk, Poland
| | - Katarzyna Smolarz
- Department of Experimental Ecology of Marine Organisms, Institute of Oceanography, University of Gdańsk, Av. Pilsudskiego 46, 81-378 Gdynia, Poland
| | - Justyna Świeżak
- Department of Experimental Ecology of Marine Organisms, Institute of Oceanography, University of Gdańsk, Av. Pilsudskiego 46, 81-378 Gdynia, Poland
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Maculewicz J, Kowalska D, Świacka K, Toński M, Stepnowski P, Białk-Bielińska A, Dołżonek J. Transformation products of pharmaceuticals in the environment: Their fate, (eco)toxicity and bioaccumulation potential. Sci Total Environ 2022; 802:149916. [PMID: 34525754 DOI: 10.1016/j.scitotenv.2021.149916] [Citation(s) in RCA: 45] [Impact Index Per Article: 22.5] [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: 04/23/2021] [Revised: 08/07/2021] [Accepted: 08/22/2021] [Indexed: 06/13/2023]
Abstract
Nowadays, a huge scientific attention is being paid to the chemicals of emerging concern, which may pose a significant risk to the human and whole ecosystems. Among them, residues of pharmaceuticals are a widely investigated group of chemicals. In recent years it has been repeatedly demonstrated that pharmaceuticals are present in the environment and that some of them can be toxic to organisms as well as accumulate in their tissues. However, even though the knowledge of the presence, fate and possible threats posed by the parent forms of pharmaceuticals is quite extensive, their transformation products (TPs) have been disregarded for long time. Since last few years, this aspect has gained more scientific attention and recently published papers proved their common presence in the environment. Also the interest in terms of their toxicity, bioconcentration and stability in the environment has increased. Therefore, the aim of our paper was to revise and assess the current state of knowledge on the fate and effects resulting from the presence of the pharmaceuticals' transformation drugs in the environment. This review discusses the metabolites of compounds belonging to six major pharmaceutical groups: SSRIs, anticancer drugs, antibiotics, antihistamines, NSAIDs and opioids, additionally discussing other individual compounds for which literature data exist. The data presented in this paper prove that some TPs may be as harmful as their native forms, however for many groups of drugs this data is still insufficient to assess the risk posed by their presence in the environment.
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Affiliation(s)
- Jakub Maculewicz
- Department of Environmental Analysis, Faculty of Chemistry, University of Gdańsk, Wita Stwosza 63, 80-308 Gdańsk, Poland
| | - Dorota Kowalska
- Department of Environmental Analysis, Faculty of Chemistry, University of Gdańsk, Wita Stwosza 63, 80-308 Gdańsk, Poland.
| | - Klaudia Świacka
- Department of Experimental Ecology of Marine Organisms, Institute of Oceanography, University of Gdańsk, Av. Pilsudskiego 46, 81-378 Gdynia, Poland
| | - Michał Toński
- Department of Environmental Analysis, Faculty of Chemistry, University of Gdańsk, Wita Stwosza 63, 80-308 Gdańsk, Poland
| | - Piotr Stepnowski
- Department of Environmental Analysis, Faculty of Chemistry, University of Gdańsk, Wita Stwosza 63, 80-308 Gdańsk, Poland
| | - Anna Białk-Bielińska
- Department of Environmental Analysis, Faculty of Chemistry, University of Gdańsk, Wita Stwosza 63, 80-308 Gdańsk, Poland
| | - Joanna Dołżonek
- Department of Environmental Analysis, Faculty of Chemistry, University of Gdańsk, Wita Stwosza 63, 80-308 Gdańsk, Poland
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Tarnowska K, Gruczyńska-Sękowska E, Kowalska D, Majewska E, Kozłowska M, Winkler R. The opioid excess theory in autism spectrum disorders - is it worth investigating further? Crit Rev Food Sci Nutr 2021:1-14. [PMID: 34702104 DOI: 10.1080/10408398.2021.1996329] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Autism spectrum disorders (ASD) are defined as neurodevelopmental disorders, which are highly variable in nature and do not form a uniform picture, either in terms of symptomatology or depth of the disturbance. Diagnosis of ASD is made for children who show signs of impairment in social interaction, communication and cognitive skills. The exact cause of autism spectrum disorders has not been determined to date. Although there is no cure for ASD, a variety interventions have been proposed. The most commonly used restrictive dietary intervention is the gluten-free casein-free diet (GFCF), which is based on the opioid excess theory. This paper summarizes and discusses research on the core elements of the opioid excess theory in ASD: increased levels of opioid peptides in body fluids in ASD patients, increased intestinal permeability, altered peptidase activity and the effectiveness of GFCF diet in alleviating symptoms of ASD. Furthermore, we discuss the difficulties and their causes in conducting research with ASD patients. The assumptions of the opioid excess theory have neither been definitively confirmed nor disproved. Research in this area should continue, taking into account the highest possible quality standards and the specific needs and abilities of patients with ASD and their families.
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Affiliation(s)
- Katarzyna Tarnowska
- Department of Chemistry, Institute of Food Sciences, Warsaw University of Life Sciences, Warsaw, Poland
| | - Eliza Gruczyńska-Sękowska
- Department of Chemistry, Institute of Food Sciences, Warsaw University of Life Sciences, Warsaw, Poland
| | - Dorota Kowalska
- Department of Chemistry, Institute of Food Sciences, Warsaw University of Life Sciences, Warsaw, Poland
| | - Ewa Majewska
- Department of Chemistry, Institute of Food Sciences, Warsaw University of Life Sciences, Warsaw, Poland
| | - Mariola Kozłowska
- Department of Chemistry, Institute of Food Sciences, Warsaw University of Life Sciences, Warsaw, Poland
| | - Renata Winkler
- Department of Organizational Behaviors, Cracow University of Economics, Cracow, Poland
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Nowakowicz-Dębek B, Wlazło Ł, Czech A, Kowalska D, Bielański P, Ryszkowska-Siwko M, Łukaszewicz M, Florek M. Effects of fermented rapeseed meal on gastrointestinal morphometry and meat quality of rabbits (Oryctolagus cuniculus). Livest Sci 2021. [DOI: 10.1016/j.livsci.2021.104663] [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: 12/31/2022]
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Kowalska D, Maculewicz J, Stepnowski P, Dołżonek J. Interaction of pharmaceutical metabolites with blood proteins and membrane lipids in the view of bioconcentration: A preliminary study based on in vitro assessment. Sci Total Environ 2021; 783:146987. [PMID: 33866166 DOI: 10.1016/j.scitotenv.2021.146987] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [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: 02/04/2021] [Revised: 03/29/2021] [Accepted: 04/03/2021] [Indexed: 06/12/2023]
Abstract
Pharmaceuticals pose a real threat to the environment, which has been proven in many studies to date. However, still little is known about the transformation products (TPs) of these compounds, which can also interact with organisms, causing adverse effects like noticeable toxicity or bioconcentration. Many recent works confirm that metabolites of pharmaceuticals are present in the environment, and preliminary studies suggest that they may be equally dangerous to or even more so than their parent compounds. Additionally, it has been proven that some of them have high hydrolytic stability, thus they may be persistent in the environment. This property also increases the likelihood that these compounds will be uptaken and accumulated in the tissues of organisms. Therefore, the aim of the present study was to preliminarily estimate the affinity of the transformation products of selected drugs for blood proteins and cell membrane-forming lipids, considered as important sorption phases during distribution in a living organism. In this study, it was shown that although the examined metabolites do not have a strong affinity for membrane lipids, they exhibit relatively strong binding to proteins, which may considerably affect the distribution of TPs in an organism and may indicate a non-classical process of bioconcentration. The results obtained confirm that the TPs of pharmaceuticals should be given much more attention and their potential for bioconcentration should be further determined.
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Affiliation(s)
- Dorota Kowalska
- Department of Environmental Analysis, Faculty of Chemistry, University of Gdańsk, Wita Stwosza 63, 80-308 Gdańsk, Poland
| | - Jakub Maculewicz
- Department of Environmental Analysis, Faculty of Chemistry, University of Gdańsk, Wita Stwosza 63, 80-308 Gdańsk, Poland.
| | - Piotr Stepnowski
- Department of Environmental Analysis, Faculty of Chemistry, University of Gdańsk, Wita Stwosza 63, 80-308 Gdańsk, Poland
| | - Joanna Dołżonek
- Department of Environmental Analysis, Faculty of Chemistry, University of Gdańsk, Wita Stwosza 63, 80-308 Gdańsk, Poland
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Strychalski J, Juśkiewicz J, Kowalska D, Gugołek A. Performance indicators and gastrointestinal response of rabbits to dietary soybean meal replacement with silkworm pupae and mealworm larvae meals. Arch Anim Nutr 2021; 75:294-310. [PMID: 34404277 DOI: 10.1080/1745039x.2021.1962171] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [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: 11/30/2020] [Accepted: 07/26/2021] [Indexed: 12/31/2022]
Abstract
The objective of this study was to determine the effects of silkworm pupae meal (SPM) and mealworm larvae meal (MLM) on the production results and function of the digestive system in rabbits. Thirty male New Zealand White growing rabbits were divided into three feeding groups: control (C) (10% soybean meal [SBM] in the diet), group SPM (5% SBM and 4% SPM) and group MLM (5% SBM and 4% MLM). Compared with group C, rabbits of groups SPM and MLM, were characterised by higher final body weight and daily body weight gains. They were also found to have better apparent total tract digestibility (ATTD) of ether extract, and acid detergent fibre (ADF) and acid detergent lignin (ADL). Increased digesta viscosity was observed in these rabbits, as well as reduced extracellular activity of bacterial α-glucosidase, β-glucosidase, α-arabinofuranosidase and β-xylosidase in the caecal digesta. Similar differences between groups were also noted for the intracellular activity of β-glucuronidase, total activity of β-xylosidase and α-glucosidase. The SPM and MLM treatments contributed to an increase in the extracellular and total activity of N-acetyl-β-D-glucosaminidase (NAGase) in the caecal digesta. The SPM and MLM treatments were characterised by increased extracellular/total activity of colonic bacterial NAGase as well as increased release rates of NAGase and β-cellobiosidase, compared with group C. The rabbits fed the MLM diet had the lowest caecal concentrations of acetic acid, propionic acid, and total short chain fatty acids (SCFA). The proportion of butyric acid in the caecal SCFA profile was significantly lower in group MLM than in group C. The SPM treatment reduced the colonic concentration of iso-valeric acid. Group C had the highest colonic SCFA pool. It can be concluded that an inclusion of 4% SPM and 4% MLM in rabbit diets improved their production results, as well as beneficially increased the ATTD of fat, ADF and ADL without compromising the ATTD of other nutrients and energy. Although both dietary insect-derived products caused a mobilisation of microbiota to utilise of chitin (see NAGase activity), they stifled the metabolism of large intestinal microbiota, as manifested by decreased enzyme activity and lower SCFA concentrations.
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Affiliation(s)
- Janusz Strychalski
- Department of Fur-bearing Animal Breeding and Game Management, University of Warmia and Mazury, Olsztyn, Poland
| | - Jerzy Juśkiewicz
- Division of Food Science, Institute of Animal Reproduction and Food Research, Polish Academy of Sciences, Olsztyn, Poland
| | - Dorota Kowalska
- Department of Animal Genetic Resources Conservation, National Research Institute of Animal Production, Kraków, Poland
| | - Andrzej Gugołek
- Department of Fur-bearing Animal Breeding and Game Management, University of Warmia and Mazury, Olsztyn, Poland
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13
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Tarnowska K, Gruczyńska-Sękowska E, Kowalska D, Kozłowska M, Majewska E, Winkler R. Difficulties and factors influencing purchase decision. The perspective of families with children with autism spectrum disorders on a gluten-free and casein-free diet. Preliminary study. Rocz Panstw Zakl Hig 2021; 71:321-328. [PMID: 32938324 DOI: 10.32394/rpzh.2020.0122] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
Background Gluten-free and casein-free diet is frequently used in the support of therapy of children with autism spectrum disorders. In addition, many parents restrict the consumption of simple sugars for their children. Objective The aim of this paper was to understand factors influencing purchase decision in case of family with children with autism spectrum disorders on gluten-free and/or casein-free and/or sugar-free diet and the difficulties associated with this type of nutrition. Material and methods The study covered a group of 40 families with children with autism spectrum disorders (32 boys and 8 girls) aged 3 to 10 years. Data were collected with questionnaire included questions concerning overall characteristics of caregivers, availability of foods used in the special diet, factors affecting decision on the purchase of products, difficulties in maintaining the child nutrition method. Results The factors having strongest impact on parents' decisions on the purchase of products were product composition, presence of a certificate confirming the absence of gluten and/or milk and taste values. Exclusion diet constituted a considerable obstruction for traveling, social gatherings and resulted in conflicts with family and the environment. The limited range of healthy gluten-free, casein-free and sugar-free foods, low taste quality and unsatisfactory quality impeded purchase and preparation of varied meals. Conclusions The surveyed parents were aware consumers, paying attention primarily to product composition and safety. The respondents were looking for healthy, organic and nutritionally valuable products with low sugar content. Further development of the gluten/casein/ sugar free products market may considerably improve certain aspects of family's life with children with autism spectrum disorders.
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Affiliation(s)
- Katarzyna Tarnowska
- Department of Chemistry, Institute of Food Sciences, Warsaw University of Life Sciences (SGGW), Warsaw, Poland
| | - Eliza Gruczyńska-Sękowska
- Department of Chemistry, Institute of Food Sciences, Warsaw University of Life Sciences (SGGW), Warsaw, Poland
| | - Dorota Kowalska
- Department of Chemistry, Institute of Food Sciences, Warsaw University of Life Sciences (SGGW), Warsaw, Poland
| | - Mariola Kozłowska
- Department of Chemistry, Institute of Food Sciences, Warsaw University of Life Sciences (SGGW), Warsaw, Poland
| | - Ewa Majewska
- Department of Chemistry, Institute of Food Sciences, Warsaw University of Life Sciences (SGGW), Warsaw, Poland
| | - Renata Winkler
- Department of Organizational Behaviours, Institute of Management, Cracow University of Economics, Kraków, Poland
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Kowalska D, Strychalski J, Gugołek A. Efecto de la harina de pupas y larvas de gusano de seda como componentes proteicos de la dieta sobre indicadores de rendimiento en conejos. REV MEX CIENC PECU 2021. [DOI: 10.22319/rmcp.v12i1.5455] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
This study aimed to evaluate the effect of feeding rabbits with silkworm pupae and mealworm larvae meals on their performance indicators. Ninety (90) rabbits were divided into three groups. Control group (C) was fed with 10% soybean meal (SBM), SPM group received the diet including 5 % SBM and 4 % of silkworm pupae meal, and MLM group received the diet including 5 % SBM and 4 % of mealworm larvae meal. The body weight of rabbits and average daily gains were determined. Feed conversion ratio (FCR) was calculated. At the end of fattening period, the animals were euthanized, skinned and eviscerated to determine their carcasses characteristic. Hind leg and loin muscles were collected for analyses of the chemical composition. At the end of fattening period, rabbits from groups SPM and MLM were heavier than C rabbits (2,606.5 and 2,584.8 vs 2,404.0 g), which also improved their overall carcass characteristic while FCR was similar between groups. However, feeding rabbits with the addition of insect's meals increased the amount of ether extract in their muscles. Based on the results obtained, it may be concluded that SBM may be partially replaced by silkworm pupae and mealworm larvae meals in rabbit diets.
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Gugołek A, Kowalska D, Strychalski J, Ognik K, Juśkiewicz J. The effect of dietary supplementation with silkworm pupae meal on gastrointestinal function, nitrogen retention and blood biochemical parameters in rabbits. BMC Vet Res 2021; 17:204. [PMID: 34078372 PMCID: PMC8173814 DOI: 10.1186/s12917-021-02906-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2020] [Accepted: 05/13/2021] [Indexed: 02/05/2023] Open
Abstract
Background The aim of this study was to determine the effect of dietary inclusion of silkworm pupae meal (SPM) on nutrient digestibility, nitrogen utilization, gastrointestinal physiology and blood biochemical parameters in rabbits. Thirty Termond White rabbits were divided into three groups: SBM – fed a diet containing 10% soybean meal (SBM), SPM5 – fed a diet containing 5% SBM and 5% SPM, and SPM10 – fed a diet containing 10% SPM. Results Nutrient digestibility and nitrogen retention decreased with increasing SPM inclusion levels in rabbit diets. The dietary inclusion of SPM caused a significant increase in the stomach pH. Group SPM10 rabbits were characterized by the highest cecal tissue and digesta weights. The lowest cecal pH was noted in group SPM5. The relative weights of colonic tissue and digesta tended to increase with increasing levels of SPM. The total and intracellular activity of bacterial α-galactosidase decreased significantly in both SPM groups. The replacement of SBM with SPM led to a decrease in the activity of bacterial β-glucuronidase in the cecal digesta. The intracellular activity of bacterial α-arabinofuranosidase increased, and its release rate decreased in the cecum of rabbits in SPM groups. The extracellular activity of bacterial β-xylosidase in the cecal digesta tended to decrease in group SPM10. The highest extracellular and intracellular activity of bacterial β-cellobiosidase in the cecal digesta was noted in the SPM5 treatment. The lowest and the highest activity of bacterial N-acetyl-β-D-glucosaminidase (NAGase) was observed in groups SBM and SPM10. The SPM10 treatment contributed to a decrease in the cecal concentrations of butyric, iso-valeric and valeric acids. The lowest total concentration of putrefactive short-chain fatty acids (PSCFAs) was observed in group SPM10. The cecal concentration of propionic acid tended to increase in group SPM5, whereas the cecal concentration of iso-butyric acid tended to decrease in group SPM10. The colonic concentration of iso-valeric acid was lowest in group SPM5. SPM treatments resulted in a significant increase in plasma albumin concentration. Plasma urea concentration was significantly higher in group SPM10 than in SBM and SPM5. Conclusions The results of this study suggest that rabbit diets can be supplemented with SPM at up to 5%.
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Affiliation(s)
- Andrzej Gugołek
- Department of Fur-bearing Animal Breeding and Game Management, Faculty of Animal Bioengineering, University of Warmia and Mazury in Olsztyn, Oczapowskiego 5, 10-718, Olsztyn, Poland.
| | - Dorota Kowalska
- Department of Small Livestock Breeding, National Research Institute of Animal Production, 32-083, Balice n. Kraków, Poland
| | - Janusz Strychalski
- Department of Fur-bearing Animal Breeding and Game Management, Faculty of Animal Bioengineering, University of Warmia and Mazury in Olsztyn, Oczapowskiego 5, 10-718, Olsztyn, Poland
| | - Katarzyna Ognik
- Department of Biochemistry and Toxicology, Faculty of Biology, Animal Sciences and Bioeconomy, University of Life Sciences in Lublin, Akademicka 13, 20-950, Lublin, Poland
| | - Jerzy Juśkiewicz
- Institute of Animal Reproduction and Food Research, Polish Academy of Sciences, Tuwima 10, 10-748, Olsztyn, Poland.
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Wlazło Ł, Kowalska D, Bielański P, Chmielowiec-Korzeniowska A, Ossowski M, Łukaszewicz M, Czech A, Nowakowicz-Dębek B. Effect of Fermented Rapeseed Meal on the Gastrointestinal Microbiota and Immune Status of Rabbit ( Oryctolagus cuniculus). Animals (Basel) 2021; 11:ani11030716. [PMID: 33800719 PMCID: PMC8001850 DOI: 10.3390/ani11030716] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2021] [Revised: 02/25/2021] [Accepted: 03/02/2021] [Indexed: 01/20/2023] Open
Abstract
Simple Summary The unique digestive properties of rabbits consist of highly specialised communities of intestinal microbes that, unfortunately, make them susceptible to metabolic diseases. This is why breeders, to improve the functions of the digestive tract, often use special feed additives, i.e., probiotics, prebiotics or synbiotics. The need to become independent from soybean meal (SBM), which is currently the basic source of protein in animal nutrition, and the need to stimulate the gastrointestinal tract (GIT), has increased interest in fermented components that have a positive effect on the intestinal microbiota and are a source of valuable protein. In this study, the impact of the diversified proportion of fermented rapeseed meal (FRSM) in the diet of rabbits on the immune parameters and the microbiota of the digestive tract was assessed. The reducing effect of the tested feed component against coliform bacteria and Escherichia coli within the small intestine and colon of animals and the anaerobic biota of Clostridium perfringens in the duodenum and cecum of animals was observed while in the duodenum—an increase in the beneficial biota of lactic acid bacteria. The conducted analysis also showed many complex correlations between the number of intestinal microbiota groups and the level of immunoglobulins. The results of the conducted research indicate that FRSM, in addition to valuable nutritional values, may play an important probiotic role in the GIT of rabbits. Research of this type is especially important in terms of reducing the use of antibiotics for therapeutic purposes through nutritional prevention of animals. Abstract The present study was conducted to determine the effect of the use of varying amounts of fermented rapeseed meal in diets for rabbits on the immune status and microbiota of segments of the GIT. Forty 35 day old rabbits used in the experiment were assigned to four groups: the control group (group C) were fed a standard diet and the experimental received 4%, 8% or 12% fermented rapeseed meal (included in place of standard soybean meal). Class A, G and M immunoglobulins were determined in the blood plasma. In the food content collected after slaughter, microbiological parameters were determined for individual sections of the digestive tract. Rabbits from the groups receiving a diet with an increased proportion of fermented rapeseed meal (8% or 12%) had lower concentrations of anaerobic bacteria and Escherichia coli in the intestinal contents. Research has shown that the increase in intake of fermented rapeseed meal was correlated with an increase in the correlations between the immunoglobulin level and the size of the microbial population in the GIT. In light of the presented results fermented rapeseed meal, by supplying valuable bioactive substances, appears to be a good component in the diet of rabbits, enhancing immune system development and helping to prevent disturbances of the gut microbiota.
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Affiliation(s)
- Łukasz Wlazło
- Department of Animal Hygiene and Environmental Hazards, University of Life Sciences in Lublin, Akademicka 13, 20-950 Lublin, Poland; (Ł.W.); (A.C.-K.); (B.N.-D.)
| | - Dorota Kowalska
- National Research Institute of Animal Production, Krakowska 1, 32-083 Balice, Poland;
- Correspondence: (D.K.); (M.O.); Tel.: +48-666-081-256 (D.K.); +48-81-445-69-85 (M.O.)
| | - Paweł Bielański
- National Research Institute of Animal Production, Krakowska 1, 32-083 Balice, Poland;
| | - Anna Chmielowiec-Korzeniowska
- Department of Animal Hygiene and Environmental Hazards, University of Life Sciences in Lublin, Akademicka 13, 20-950 Lublin, Poland; (Ł.W.); (A.C.-K.); (B.N.-D.)
| | - Mateusz Ossowski
- Department of Animal Hygiene and Environmental Hazards, University of Life Sciences in Lublin, Akademicka 13, 20-950 Lublin, Poland; (Ł.W.); (A.C.-K.); (B.N.-D.)
- Correspondence: (D.K.); (M.O.); Tel.: +48-666-081-256 (D.K.); +48-81-445-69-85 (M.O.)
| | - Marcin Łukaszewicz
- Department of Biotransformation, Faculty of Biotechnology, University of Wroclaw, F. Joliot-Curie 14A, 50-383 Wrocław, Poland;
| | - Anna Czech
- Department of Biochemistry and Toxicology, University of Life Sciences in Lublin, Akademicka 13, 20-950 Lublin, Poland;
| | - Bożena Nowakowicz-Dębek
- Department of Animal Hygiene and Environmental Hazards, University of Life Sciences in Lublin, Akademicka 13, 20-950 Lublin, Poland; (Ł.W.); (A.C.-K.); (B.N.-D.)
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Kowalska D, Maculewicz J, Stepnowski P, Dołżonek J. Ionic liquids as environmental hazards - Crucial data in view of future PBT and PMT assessment. J Hazard Mater 2021; 403:123896. [PMID: 33264960 DOI: 10.1016/j.jhazmat.2020.123896] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/17/2020] [Revised: 08/31/2020] [Accepted: 08/31/2020] [Indexed: 06/12/2023]
Abstract
Ionic liquids (ILs) constitute a large group of chemical compounds. They have gained much attention among scientists and industry due to their unique properties. Due to the fact that ILs are purely ionic compounds, there is the possibility to design an enormous number of cation and anion combinations, making them designer solvents. Thus it also creates the possibility of producing more environmentally benign solvents. However, significant drawbacks related mainly to their toxicity and persistence have already been noticed. Furthermore the interest in these compounds is constantly growing and their impact on the environment should be defined. More and more ILs are produced or imported in the amount higher than 10 tonnes per year and the group of ILs registered in REACH is still expanding. Thus for an increasing number of compounds, it will be necessary to perform a PBT and PMT assessment using the criteria described in REACH. Therefore the data collected in this work thoroughly sort out the information on the toxicity, bioconcentration/bioaccumulation, biodegradation and mobility of ILs in the context of PBT and PMT assessment.
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Affiliation(s)
- Dorota Kowalska
- Department of Environmental Analysis, Faculty of Chemistry, University of Gdańsk, Wita Stwosza 63, 80-308 Gdańsk, Poland.
| | - Jakub Maculewicz
- Department of Environmental Analysis, Faculty of Chemistry, University of Gdańsk, Wita Stwosza 63, 80-308 Gdańsk, Poland
| | - Piotr Stepnowski
- Department of Environmental Analysis, Faculty of Chemistry, University of Gdańsk, Wita Stwosza 63, 80-308 Gdańsk, Poland
| | - Joanna Dołżonek
- Department of Environmental Analysis, Faculty of Chemistry, University of Gdańsk, Wita Stwosza 63, 80-308 Gdańsk, Poland
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18
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Gruczynska-Sekowska E, Aladedunye F, Anwar F, Koczon P, Kowalska D, Kozlowska M, Majewska E, Tarnowska K. Development of zero-trans shortenings with high thermo-oxidative stability by enzymatic transesterification. Grasas y Aceites 2020. [DOI: 10.3989/gya.0564191] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Novel zero-trans frying shortenings were formed by enzymatic transesterification by exploring a palm stearin and canola oil mixture and stearic acid as substrates. Both immobilized (Novozym 435, Lipase PS “Amano” IM) and non-immobilized (Lipomod TM 34P) enzymes were applied as biocatalysts. Palmitic acid, the fatty acid which defines the proper type of crystal formation, was present at the 15% level in the reaction mixtures. The novel structured lipids had comparable physical properties and offered similar frying performance to those of commercial shortening. Needle-shaped crystals were predominant both in the transesterification products and the commercial frying shortening. Furthermore, solid fat content profiles of the zero-trans structured lipids produced by Novozym 435 and Lipase PS “Amano” IM were close to those of the commercial shortening.
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Maculewicz J, Świacka K, Kowalska D, Stepnowski P, Stolte S, Dołżonek J. In vitro methods for predicting the bioconcentration of xenobiotics in aquatic organisms. Sci Total Environ 2020; 739:140261. [PMID: 32758962 DOI: 10.1016/j.scitotenv.2020.140261] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2020] [Revised: 06/10/2020] [Accepted: 06/14/2020] [Indexed: 06/11/2023]
Abstract
The accumulation of anthropogenic chemical substances in aquatic organisms is an immensely important issue from the point of view of environmental protection. In the context of the increasing number and variety of compounds that may potentially enter the environment, there is a need for efficient and reliable solutions to assess the risks. However, the classic approach of testing with fish or other animals is not sufficient. Due to very high costs, significant time and labour intensity, as well as ethical concerns, in vivo methods need to be replaced by new laboratory-based tools. So far, many models have been developed to estimate the bioconcentration potential of chemicals. However, most of them are not sufficiently reliable and their predictions are based on limited input data, often obtained with doubtful quality. The octanol-water partition coefficient is still often used as the main laboratory tool for estimating bioconcentration. However, according to current knowledge, this method can lead to very unreliable results, both for neutral species and, above all, for ionic compounds. It is therefore essential to start using new, more advanced and credible solutions on a large scale. Over the last years, many in vitro methods have been newly developed or improved, allowing for a much more adequate estimation of the bioconcentration potential. Therefore, the aim of this work was to review the most recent laboratory methods for assessing the bioconcentration potential and to evaluate their applicability in further research.
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Affiliation(s)
- Jakub Maculewicz
- Department of Environmental Analysis, Faculty of Chemistry, University of Gdańsk, Wita Stwosza 63, 80-308 Gdańsk, Poland.
| | - Klaudia Świacka
- Department of Experimental Ecology of Marine Organisms, Institute of Oceanography, University of Gdansk, Av. Pilsudskiego 46, 81-378 Gdynia, Poland
| | - Dorota Kowalska
- Department of Environmental Analysis, Faculty of Chemistry, University of Gdańsk, Wita Stwosza 63, 80-308 Gdańsk, Poland
| | - Piotr Stepnowski
- Department of Environmental Analysis, Faculty of Chemistry, University of Gdańsk, Wita Stwosza 63, 80-308 Gdańsk, Poland
| | - Stefan Stolte
- Faculty of Environmental Sciences, Department of Hydrosciences, Institute of Water Chemistry, Technische Universität Dresden, Bergstrasse 66, 01069 Dresden, Germany
| | - Joanna Dołżonek
- Department of Environmental Analysis, Faculty of Chemistry, University of Gdańsk, Wita Stwosza 63, 80-308 Gdańsk, Poland
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Belan B, Kowalska D, Dzevenko M, Manyako M, Gladyshevskii R. Single-crystal investigation of Ce 5Ag
x
Ge 4−x
( x = 0.1−1.08) with Sm 5Ge 4 type. Zeitschrift für Naturforschung B 2020. [DOI: 10.1515/znb-2020-0091] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
The crystal structure of the phase Ce5Ag
x
Ge4−x
(x = 0.1−1.08) has been determined using single-crystal X-ray diffraction data for Ce5Ag0.1Ge3.9. This phase is isotypic with Sm5Ge4: space group Pnma (No. 62), Pearson code oP36, Z = 4, a = 7.9632(2), b = 15.2693(5), c = 8.0803(2) Å; R1 = 0.0261, wR2 = 0.0460, 1428 F
2 values and 48 variables. The two crystallographic positions 8d and 4c show Ge/Ag mixing, leading to a slight increase in the lattice parameters as compared to those of the pure binary compound Ce5Ge4.
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Affiliation(s)
- Bohdana Belan
- Chemical Faculty, Ivan Franko National University of Lviv , Kyryla i Mefodiya Street 6 , 79005 Lviv , Ukraine
| | - Dorota Kowalska
- Institute of Low Temperature and Structure Research, Polish Academy of Sciences , P. O. Box 1410, 50-950 Wrocław , Poland
| | - Mariya Dzevenko
- Chemical Faculty, Ivan Franko National University of Lviv , Kyryla i Mefodiya Street 6 , 79005 Lviv , Ukraine
| | - Mykola Manyako
- Chemical Faculty, Ivan Franko National University of Lviv , Kyryla i Mefodiya Street 6 , 79005 Lviv , Ukraine
| | - Roman Gladyshevskii
- Chemical Faculty, Ivan Franko National University of Lviv , Kyryla i Mefodiya Street 6 , 79005 Lviv , Ukraine
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Cizman A, Kowalska D, Trzebiatowska M, Medycki W, Krupiński M, Staniorowski P, Poprawski R. The structure and switchable dielectric properties of a dabco complex with chromium chloride. Dalton Trans 2020; 49:10394-10401. [PMID: 32657310 DOI: 10.1039/d0dt01897j] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report a metal-organic material of the following formula [DabcoH22+]·CrCl3(H2O)3·2(Cl-) (DabcoH22+ = C6H14N22+, diprotonated 1,4-diazabicyclo[2.2.2]octanium). This compound exhibits a dielectric anomaly, which is attributed to the rotatory fluctuation of the Dabco molecule. The complementary results of single-crystal X-ray diffraction, DSC, dielectric, NMR and Raman spectroscopy provide information about the general mechanisms of the phase transition, which results from the ordering of the DabcoH22+ molecules. The reversibility of dielectric switching with no observable attenuation of the dielectric signal during multiple cycling is observed. The dielectric switching characteristic of the crystal makes it an interesting material for potential application in smart devices.
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Affiliation(s)
- A Cizman
- Wrocław University of Science and Technology, Department of Experimental Physics, 27 Wybrzeże Wyspiańskiego, 50-370 Wrocław, Poland.
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Belan B, Kowalska D, Manyako M, Dzevenko M, Kalychak Y. Single-crystal investigation of the compound SmNi 5.2Mn 6.8. Zeitschrift für Naturforschung B 2020. [DOI: 10.1515/znb-2019-0181] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
The intermetallic compound SmNi5.2Mn6.8 was synthesized by arc-melting and its crystal structure has been determined using single-crystal X-ray diffraction data. The compound adopts the tetragonal structure type ThMn12: space group I4/mmm, Pearson code tI26, Z = 2; a = 8.6528(3), c = 4.8635(3) Å; R1 = 0.0175, wR2 = 0.0372, 171 F
2 values, 17 refined variables. The two crystallographic positions 8f and 8j in the structure of SmNi5.2Mn6.8 are occupied by a mixture of Mn and Ni atoms.
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Affiliation(s)
- Bohdana Belan
- Chemical Faculty, Ivan Franko National University of Lviv , Kyryla i Mefodiya Street 6 , UA-79005 Lviv , Ukraine
| | - Dorota Kowalska
- Institute of Low Temperature and Structure Research, Polish Academy of Sciences , P. O. Box 1410 , 50-950 Wrocław , Poland
| | - Mykola Manyako
- Chemical Faculty, Ivan Franko National University of Lviv , Kyryla i Mefodiya Street 6 , UA-79005 Lviv , Ukraine
| | - Mariya Dzevenko
- Chemical Faculty, Ivan Franko National University of Lviv , Kyryla i Mefodiya Street 6 , UA-79005 Lviv , Ukraine , Tel.: +38 032 2600389
| | - Yaroslav Kalychak
- Chemical Faculty, Ivan Franko National University of Lviv , Kyryla i Mefodiya Street 6 , UA-79005 Lviv , Ukraine
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Majewska E, Kozłowska M, Gruczyńska-Sękowska E, Kowalska D, Tarnowska K. Lemongrass (Cymbopogon citratus) Essential Oil: Extraction, Composition, Bioactivity and Uses for Food Preservation – a Review. POL J FOOD NUTR SCI 2019. [DOI: 10.31883/pjfns/113152] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
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Kowalska D. Insects as a source of nutrients in animal feed. Roczniki Naukowe Polskiego Towarzystwa Zootechnicznego 2019. [DOI: 10.5604/01.3001.0013.5131] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Global production of compound feed in 2018 was 1.103 billion tonnes, which was an increase
of 3% compared to 2017. To meet the needs of the growing livestock population, a further increase
in compound feed production is necessary. The need for new, alternative nutrient sources for feed
production, in order to meet the anticipated consumer demand for animal products, has led to an
increase in research on the potential uses and effects of insect-derived products, such as whole
insects or insect meals and oils. Insects appear to be one of the most promising alternatives to nutrient
sources such as soybean and fish meal, commonly used in feed for livestock and aquaculture. The
purpose of the review was to present the currently available literature on the use of insects as feed
in livestock production and to systematize it in one easy-to-read document. Particular focus has
been placed on the use of insect products for animals such as poultry, rabbits and pigs, as well as
their effect on productivity, nutrient digestibility, performance, and product quality. The results of
numerous studies suggest that insects can be a source of nutrients in feed for poultry, rabbits and
pigs.
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Affiliation(s)
- Dorota Kowalska
- National Research Institute of Animal Production Department of Small Livestock Breeding
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Kowalska D, Piskorska-Hommel E, Majchrowski A, Wołcyrz M. Modal disorder in rubidium tungstoniobate RbNbWO6 confirmed by EXAFS. J SOLID STATE CHEM 2019. [DOI: 10.1016/j.jssc.2019.04.037] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Prymaczek A, Cwierzona M, Grzelak J, Kowalska D, Nyk M, Mackowski S, Piatkowski D. Remote activation and detection of up-converted luminescence via surface plasmon polaritons propagating in a silver nanowire. Nanoscale 2018; 10:12841-12847. [PMID: 29947635 DOI: 10.1039/c8nr04517h] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
In this paper, we demonstrate remote activation and detection of the 2-photon up-conversion luminescence via surface plasmon polaritons propagating in a long silver nanowire. The hybrid nanostructure was assembled by locally depositing a submicron droplet of nanocrystal-containing colloidal solution on one of the ends of the metallic nanowire. When - using a classic confocal microscope - the second end of the nanowire, without the nanocrystals, is illuminated with infrared laser light, we observe strong emission from the same end. Therefore, it indicates that surface plasmon polaritons activated with infrared light at the second end of the nanowire propagate along it and can excite nanocrystals in the droplet at the opposite end. Subsequently, the excited nanocrystals up-convert the energy and by launching surface plasmon polaritons can guide the up-converted luminescence back to the starting point. The emergence of this effect is much more pronounced for a laser polarized along the nanowire. The spectral and temporal character of this emission reveals strong interactions between surface plasmon polaritons and electronic states of the nanocrystals. The details of local and non-local aspects of the effects of remote excitation and guiding of energy in a silver nanowire are elucidated using a unique experimental setup, based on two microscope objectives for spatial separation and control of both excitation and emission beams.
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Affiliation(s)
- A Prymaczek
- Institute of Physics, Faculty of Physics, Astronomy and Informatics, Nicolaus Copernicus University, Grudziadzka 5, 87-100 Torun, Poland.
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Kowalska D, Szalkowski M, Ashraf K, Grzelak J, Lokstein H, Niedziolka-Jonsson J, Cogdell R, Mackowski S. Spectrally selective fluorescence imaging of Chlorobaculum tepidum reaction centers conjugated to chelator-modified silver nanowires. Photosynth Res 2018; 135:329-336. [PMID: 29090426 PMCID: PMC5784008 DOI: 10.1007/s11120-017-0455-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/27/2017] [Accepted: 10/04/2017] [Indexed: 06/07/2023]
Abstract
A polyhistidine tag (His-tag) present on Chlorobaculum tepidum reaction centers (RCs) was used to immobilize photosynthetic complexes on a silver nanowire (AgNW) modified with nickel-chelating nitrilo-triacetic acid (Ni-NTA). The optical properties of conjugated nanostructures were studied using wide-field and confocal fluorescence microscopy. Plasmonic enhancement of RCs conjugated to AgNWs was observed as their fluorescence intensity dependence on the excitation wavelength does not follow the excitation spectrum of RC complexes in solution. The strongest effect of plasmonic interactions on the emission intensity of RCs coincides with the absorption spectrum of AgNWs and is observed for excitation into the carotenoid absorption. From the absence of fluorescence decay shortening, we attribute the emission enhancement to increase of absorption in RC complexes.
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Affiliation(s)
- Dorota Kowalska
- Institute of Physics, Faculty of Physics, Astronomy and Informatics, Nicolaus Copernicus University, Grudziadzka 5, Torun, Poland.
| | - Marcin Szalkowski
- Institute of Physics, Faculty of Physics, Astronomy and Informatics, Nicolaus Copernicus University, Grudziadzka 5, Torun, Poland
| | - Khuram Ashraf
- Institute of Molecular, Cell & Systems Biology, Glasgow Biomedical Research Centre, University of Glasgow, 120 University Place, Glasgow, G12 8TA, Scotland, UK
- Department of Physiology and Cellular Biophysics, Columbia University, Russ Berrie Pavilion, 1150 St. Nicholas Avenue, New York, NY, 10025, USA
| | - Justyna Grzelak
- Institute of Physics, Faculty of Physics, Astronomy and Informatics, Nicolaus Copernicus University, Grudziadzka 5, Torun, Poland
| | - Heiko Lokstein
- Institute of Molecular, Cell & Systems Biology, Glasgow Biomedical Research Centre, University of Glasgow, 120 University Place, Glasgow, G12 8TA, Scotland, UK
- Department of Chemical Physics and Optics, Charles University, Ke Karlovu 3, Prague, Czech Republic
| | - Joanna Niedziolka-Jonsson
- Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, Warsaw, Poland
- Baltic Institute of Technology, Al. Zwycięstwa 96/98, Gdynia, Poland
| | - Richard Cogdell
- Institute of Molecular, Cell & Systems Biology, Glasgow Biomedical Research Centre, University of Glasgow, 120 University Place, Glasgow, G12 8TA, Scotland, UK
| | - Sebastian Mackowski
- Institute of Physics, Faculty of Physics, Astronomy and Informatics, Nicolaus Copernicus University, Grudziadzka 5, Torun, Poland.
- Baltic Institute of Technology, Al. Zwycięstwa 96/98, Gdynia, Poland.
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Gruczyńska E, Kowalska D, Kozłowska M, Majewska E, Tarnowska K. Furan in roasted, ground and brewed coffee. Rocz Panstw Zakl Hig 2018; 69:111-118. [PMID: 29766689] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/08/2023] Open
Abstract
Coffee is the most popular hot beverage in the world. The annual coffee production in 2010, 2014 and 2016 was 8.1, 9.0 and 9.3 million tons respectively. There are more than 100 coffee species, but only two of them: Arabica (Coffea arabica) and Robusta (Coffea canephora) have gained commercial importance. During roasting of green coffee beans not only desirable compounds are formed, that exert positive influence on the taste and flavour of coffee, but also small quantities of undesirable ones. Furan (C4H4O) is one of the latter. Furan is a volatile compound (boiling temp. of 31.4 oC) formed during thermal processing of food. The toxicity of furan has been well documented and it is classified as “possible human carcinogen” (Group 2B) by the International Agency for Research on Cancer. Various pathways have been reported for furan formation during food processing. It can be formed from carbohydrates, amino acids by their thermal degradation or thermal re-arrangement and by oxidation of ascorbic acid and polyunsaturated acids and carotenoids. High concentrations of furan have been reported in coffee, baked and roasted food and in food subjected to preserving in cans and jars. Furan levels in brewed coffee are typically near or below 120 μg/L, but it can approach thousands μg/kg in roasted whole beans or ground coffee. The highest concentration of furan in roasted coffee reaches the level of 7000 μg/kg. Taking into account that coffee is the most popular hot drink, it becomes the main contributor to furan exposure from dietary sources for adults. In this article the published scientific papers concerned with the presence of furan in roasted non-brewed and brewed coffee have been reviewed. The formation mechanisms and occurrence of furan in coffee and the harmful influence of furan on the consumer health have been discussed.
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Affiliation(s)
- Eliza Gruczyńska
- Department of Chemistry, Faculty of Food Sciences, Warsaw University of Life Sciences (WULS – SGGW), Nowoursynowska 159 C, 02-776 Warsaw, Poland
| | - Dorota Kowalska
- Department of Chemistry, Faculty of Food Sciences, Warsaw University of Life Sciences (WULS – SGGW), Nowoursynowska 159 C, 02-776 Warsaw, Poland
| | - Mariola Kozłowska
- Department of Chemistry, Faculty of Food Sciences, Warsaw University of Life Sciences (WULS – SGGW), Nowoursynowska 159 C, 02-776 Warsaw, Poland
| | - Ewa Majewska
- Department of Chemistry, Faculty of Food Sciences, Warsaw University of Life Sciences (WULS – SGGW), Nowoursynowska 159 C, 02-776 Warsaw, Poland
| | - Katarzyna Tarnowska
- Department of Chemistry, Faculty of Food Sciences, Warsaw University of Life Sciences (WULS – SGGW), Nowoursynowska 159 C, 02-776 Warsaw, Poland
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Kowalska M, Żbikowska A, Onacik-Gür S, Kowalska D. Acrylamide in food products - eating habits and consumer awareness among Medical School students. Ann Agric Environ Med 2017; 24:570-574. [PMID: 29284226 DOI: 10.5604/12321966.1232764] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
INTRODUCTION Acrylamide is formed in several foods during high-temperature processing. In view of reports written about the neurotoxic, genotoxic and carcinogenic effects of acrylamide, it was considered that the presence of this substance in food products might pose a risk for human health. Currently, according to EU Commission recommendations, the content of acrylamide in food should be monitored. OBJECTIVE The aim of this work was to analyze the food preferences of youth and students from medical schools in Radom, central-eastern Poland, as the most frequent precipitantsas in the field of food products that may be a significant source of acrylamide in the diet. Furthermore, an attempt was made to determine the level of knowledge of the population in the field of acrylamide. MATERIAL AND METHODS The research was conducted by questionnaire. The study was based on the answers of 227 respondents. The survey was carried out by direct contact with an interviewer from February - June 2012. RESULTS Analysis of the study population shows that women consume more coffee than men. In addition, adults over 25 years old consumed the largest quantity of coffee; it can therefore be assumed that it is a significant source of acrylamide in their bodies. However, even young people under 17 declared that they consume coffee every day (20%). CONCLUSIONS Due to the adverse effects of this compound it is important to reduce the level of acrylamide in food products. A few people in the population (7%) had heard of acrylamide previously, but none of them had any knowledge of its occurrence and formation. It is necessary to take strong action to change attitudes towards acrylamide and attempt to introduce ways to reduce this compound in the diet, for example, by appropriate selection of products in the daily diet and appropriate means of thermal preparation of products at home.
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Affiliation(s)
- Małgorzata Kowalska
- Faculty of Materials Science, Technology and Design, Department of Chemistry, University of Technology and Humanities in Radom, Poland.
| | - Anna Żbikowska
- Faculty of Food Science, Department of Food Technology, Warsaw University of Life Sciences (WULS-SGGW), Poland
| | - Sylwia Onacik-Gür
- Faculty of Food Science, Department of Food Technology, Warsaw University of Life Sciences (WULS-SGGW), Poland
| | - Dorota Kowalska
- Faculty of Food Sciences, Department of Chemistry, Warsaw University of Life Sciences (WULS-SGGW), Poland
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Majewska E, Kozłowska M, Kowalska D, Gruczyńska E. Characterization of the essential oil from cone-berries of Juniperus communis L. (Cupressaceae). Herba Polonica 2017. [DOI: 10.1515/hepo-2017-0018] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Summary
Juniperus communis L. (Cupressaceae) is a plant widely cultivated in the Northern hemisphere. Juniper berries, the fruit of Juniperus communis L. are a highly valued, essential oil-rich plant material used traditionally in folk medicine as antiseptic, diuretic, antirheumatic, anti-inflammatory, antibacterial and antifungicidal agent. This paper reviews information on extraction methods of the essential oil from the juniper berries, its chemical composition and antimicrobial as well as antioxidant properties.
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Affiliation(s)
- Ewa Majewska
- Warsaw University of Life Sciences – SGGW Faculty of Food Sciences Departament of Chemistry Nowoursynowska 159c 02-776, Warsaw , Poland
| | - Mariola Kozłowska
- Warsaw University of Life Sciences – SGGW Faculty of Food Sciences Departament of Chemistry Nowoursynowska 159c 02-776, Warsaw , Poland
| | - Dorota Kowalska
- Warsaw University of Life Sciences – SGGW Faculty of Food Sciences Departament of Chemistry Nowoursynowska 159c 02-776, Warsaw , Poland
| | - Eliza Gruczyńska
- Warsaw University of Life Sciences – SGGW Faculty of Food Sciences Departament of Chemistry Nowoursynowska 159c 02-776, Warsaw , Poland
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Szalkowski M, Janna Olmos JD, Buczyńska D, Maćkowski S, Kowalska D, Kargul J. Plasmon-induced absorption of blind chlorophylls in photosynthetic proteins assembled on silver nanowires. Nanoscale 2017; 9:10475-10486. [PMID: 28703814 DOI: 10.1039/c7nr03866f] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
We demonstrate that controlled assembly of eukaryotic photosystem I with its associated light harvesting antenna complex (PSI-LHCI) on plasmonically active silver nanowires (AgNWs) substantially improves the optical functionality of such a novel biohybrid nanostructure. By comparing fluorescence intensities measured for PSI-LHCI complex randomly oriented on AgNWs and the results obtained for the PSI-LHCI/cytochrome c553 (cyt c553) bioconjugate with AgNWs we conclude that the specific binding of photosynthetic complexes with defined uniform orientation yields selective excitation of a pool of chlorophyll (Chl) molecules that are otherwise almost non-absorbing. This is remarkable, as this study shows for the first time that plasmonic excitations in metallic nanostructures can not only be used to enhance native absorption of photosynthetic pigments, but also - by employing cyt c553 as the conjugation cofactor - to activate the specific Chl pools as the absorbing sites only when the uniform and well-defined orientation of PSI-LHCI with respect to plasmonic nanostructures is achieved. As absorption of PSI alone is comparatively low, our approach lends itself as an innovative approach to outperform the reported-to-date biohybrid devices with respect to solar energy conversion.
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Affiliation(s)
- Marcin Szalkowski
- Institute of Physics, Faculty of Physics, Astronomy and Informatics, Nicolaus Copernicus University, ul. Grudziądzka 5, 87-100 Toruń, Poland.
| | - Julian David Janna Olmos
- Centre of New Technologies, University of Warsaw, ul. Banacha 2C, 02-097 Warsaw, Poland. and Faculty of Biology, University of Warsaw, ul. Miecznikowa 1, 02-096, Warsaw, Poland
| | - Dorota Buczyńska
- Institute of Physics, Faculty of Physics, Astronomy and Informatics, Nicolaus Copernicus University, ul. Grudziądzka 5, 87-100 Toruń, Poland.
| | - Sebastian Maćkowski
- Institute of Physics, Faculty of Physics, Astronomy and Informatics, Nicolaus Copernicus University, ul. Grudziądzka 5, 87-100 Toruń, Poland. and Baltic Institute of Technology, al. Zwycięstwa 96/98, Gdynia, Poland
| | - Dorota Kowalska
- Institute of Physics, Faculty of Physics, Astronomy and Informatics, Nicolaus Copernicus University, ul. Grudziądzka 5, 87-100 Toruń, Poland.
| | - Joanna Kargul
- Centre of New Technologies, University of Warsaw, ul. Banacha 2C, 02-097 Warsaw, Poland.
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Bednarchuk TJ, Kowalska D, Kinzhybalo V, Wołcyrz M. Temperature-induced reversible structural phase transition and X-ray diffuse scattering in 2-amino-3-nitropyridinium hydrogen sulfate. Acta Crystallogr B Struct Sci Cryst Eng Mater 2017; 73:337-346. [DOI: 10.1107/s2052520617001524] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2016] [Accepted: 01/29/2017] [Indexed: 11/11/2022]
Abstract
The novel polar material 2-amino-3-nitropyridinium hydrogen sulfate, C5H6N3O2(HSO4) (abbreviated as 2A3NP-HS), was obtained and structurally characterized by means of single-crystal X-ray diffraction. At room temperature, 2A3NP-HS crystallizes as a non-centrosymmetric disordered phase (I) in the orthorhombicPna21space group. On cooling below 298 K, 2A3NP-HS undergoes a reversible phase transition to phase (II) with the monoclinic non-centrosymmetricP21space group. This transition might be classified as an `order–disorder' type. The structural details in both phases are analysed. Additionally, for phase (I), in the 304–365 K temperature range, diffuse scattering was found to be present in the form of elongated streaks parallel to thea* direction. This can be unravelled when implementing a short-range order affecting anionic cationic ribbons occurring in the structure, with correlations acting both in thea-direction and in thebc-plane. The results of Monte Carlo simulations, adapting a two-dimensional Ising-type model, reveal the formation of domains, which areb-elongated and thin alonga. Locally, the stacking of the ribbons in the domains reflects the ordered arrangement observed in the low-temperature monoclinic phase (II).
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Kowalska M, Mendrycka M, Zbikowska A, Kowalska D. ASSESSMENT OF A STABLE COSMETIC PREPARATION BASED ON ENZYMATIC INTERESTERIFIED FAT, PROPOSED IN THE PREVENTION OF ATOPIC DERMATITIS. Acta Pol Pharm 2017; 74:465-476. [PMID: 29624253] [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: 06/08/2023]
Abstract
Atopic dermatitis is one of the most common skin disorders seen in infants, children and adults. Proper prevention might slow the atopic symptoms. The purpose of the work was a sensory analysis, an evaluation of moistening properties and stability of emulsions based on an enzymatic interesterified fat blend (mutton tallow and walnut oil) and homogenized at different revolutions and different contents of thickener. The emulsions were evaluated with respect to sensory and skin moisturizing properties by 78 respondents. Stability tests, particle size, distribution, dispersity index, morphology structure of the emulsions were determinated too. Taking into consideration all properties of the emulsions, emulsion IV (containing 0.9 g carboxymethyl cellulose and homogenized at 18000 rpm) and emulsion V (1.5 g of carboxymethyl cellulose and homogenized at 24000 rpm) were found to be of optimum composition. The emulsions exhibited good stability, were highly rated in sensory terms and displayed optimum moistening properties. It has been proven that model emulsions based on interesterified fats containing partial acylglicerols, with optimum carboxymethyl cellulose content and specific revolutions at the time of homogenization are an opportunity for developing preparations targeted at skins requiring special care (e.g., with atopic dermatitis or psoriasis). The work proved the use of enzymatic process to create the emulsifier, which represents the innovative contribution of this work. Also it showed an additional application of enzymatic interesterified fats which since has been used only in food industries.
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Zwoliński C, Gugołek A, Strychalski J, Kowalska D, Chwastowska-Siwiecka I, Konstantynowicz M. The effect of substitution of soybean meal with a mixture of rapeseed meal, white lupin grain, and pea grain on performance indicators, nutrient digestibility, and nitrogen retention in Popielno White rabbits. Journal of Applied Animal Research 2016. [DOI: 10.1080/09712119.2016.1233107] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Cezary Zwoliński
- Department of Fur-bearing Animal Breeding and Game Management, Faculty of Animal Bioengineering, University of Warmia and Mazury, Olsztyn, Poland
| | - Andrzej Gugołek
- Department of Fur-bearing Animal Breeding and Game Management, Faculty of Animal Bioengineering, University of Warmia and Mazury, Olsztyn, Poland
| | - Janusz Strychalski
- Department of Fur-bearing Animal Breeding and Game Management, Faculty of Animal Bioengineering, University of Warmia and Mazury, Olsztyn, Poland
| | - Dorota Kowalska
- Department of Animal Genetic Resources Conservation, National Research Institute of Animal Production, Balice n. Kraków, Poland
| | - Iwona Chwastowska-Siwiecka
- Department of Commodity Science and Animal Raw Material Processing, Faculty of Animal Bioengineering, University of Warmia and Mazury, Olsztyn, Poland
| | - Małgorzata Konstantynowicz
- Department of Fur-bearing Animal Breeding and Game Management, Faculty of Animal Bioengineering, University of Warmia and Mazury, Olsztyn, Poland
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Maćkowski S, Czechowski N, Ashraf KU, Szalkowski M, Lokstein H, Cogdell RJ, Kowalska D. Origin of bimodal fluorescence enhancement factors ofChlorobaculum tepidumreaction centers on silver island films. FEBS Lett 2016; 590:2558-65. [DOI: 10.1002/1873-3468.12292] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2016] [Revised: 07/02/2016] [Accepted: 07/03/2016] [Indexed: 01/18/2023]
Affiliation(s)
- Sebastian Maćkowski
- Optics of Hybrid Nanostructures Group; Faculty of Physics, Astronomy and Informatics; Nicolaus Copernicus University; Torun Poland
| | - Nikodem Czechowski
- Optics of Hybrid Nanostructures Group; Faculty of Physics, Astronomy and Informatics; Nicolaus Copernicus University; Torun Poland
| | - Khuram U. Ashraf
- Institute of Molecular, Cell & Systems Biology; Glasgow Biomedical Research Centre; University of Glasgow; UK
| | - Marcin Szalkowski
- Optics of Hybrid Nanostructures Group; Faculty of Physics, Astronomy and Informatics; Nicolaus Copernicus University; Torun Poland
| | - Heiko Lokstein
- Institute of Molecular, Cell & Systems Biology; Glasgow Biomedical Research Centre; University of Glasgow; UK
| | - Richard J. Cogdell
- Institute of Molecular, Cell & Systems Biology; Glasgow Biomedical Research Centre; University of Glasgow; UK
| | - Dorota Kowalska
- Optics of Hybrid Nanostructures Group; Faculty of Physics, Astronomy and Informatics; Nicolaus Copernicus University; Torun Poland
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Szalkowski M, Ashraf KU, Lokstein H, Mackowski S, Cogdell RJ, Kowalska D. Silver island film substrates for ultrasensitive fluorescence detection of (bio)molecules. Photosynth Res 2016; 127:103-108. [PMID: 26168991 DOI: 10.1007/s11120-015-0178-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2014] [Accepted: 07/06/2015] [Indexed: 06/04/2023]
Abstract
A silver island film (SIF) substrate was used to demonstrate that Metal-Enhanced Fluorescence (MEF) is a powerful tool to enable detection of emission from (bio)molecules at very low concentrations. The experiments were carried out with the Fenna-Matthews-Olson (FMO) pigment-protein complex from the photosynthetic green sulfur bacterium Chlorobaculum tepidum. FMO was diluted to a level, at which no emission was detectable on a glass substrate. In contrast, the fluorescence of FMO was readily observed on the SIF substrate, even though the emission wavelength of FMO is displaced by over 300 nm from the maximum of the plasmon resonance of the SIF layer. Estimated enhancements of the fluorescence intensity of FMO on SIF are about 40-fold. The enhancement factor correlates with the improvement of the signal-to-noise ratio for FMO emission on SIF substrates.
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Affiliation(s)
- Marcin Szalkowski
- Faculty of Physics, Astronomy and Informatics, Institute of Physics, Nicolaus Copernicus University, ul. Grudziadzka 5, 87-100, Torun, Poland
| | - Khuram U Ashraf
- Institute of Molecular, Cell & Systems Biology, Glasgow Biomedical Research Centre, University of Glasgow, 120 University Place, Glasgow, G12 8TA, Scotland, UK
| | - Heiko Lokstein
- Institute of Molecular, Cell & Systems Biology, Glasgow Biomedical Research Centre, University of Glasgow, 120 University Place, Glasgow, G12 8TA, Scotland, UK
| | - Sebastian Mackowski
- Faculty of Physics, Astronomy and Informatics, Institute of Physics, Nicolaus Copernicus University, ul. Grudziadzka 5, 87-100, Torun, Poland.
| | - Richard J Cogdell
- Institute of Molecular, Cell & Systems Biology, Glasgow Biomedical Research Centre, University of Glasgow, 120 University Place, Glasgow, G12 8TA, Scotland, UK
| | - Dorota Kowalska
- Faculty of Physics, Astronomy and Informatics, Institute of Physics, Nicolaus Copernicus University, ul. Grudziadzka 5, 87-100, Torun, Poland
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Strychalski J, Gugołek A, Antoszkiewicz Z, Kowalska D, Konstantynowicz M. Biologically active compounds in selected tissues of white-fat and yellow-fat rabbits and their production performance parameters. Livest Sci 2016. [DOI: 10.1016/j.livsci.2015.11.024] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Klemens T, Świtlicka-Olszewska A, Machura B, Grucela M, Janeczek H, Schab-Balcerzak E, Szlapa A, Kula S, Krompiec S, Smolarek K, Kowalska D, Mackowski S, Erfurt K, Lodowski P. Synthesis, photophysical properties and application in organic light emitting devices of rhenium(i) carbonyls incorporating functionalized 2,2′:6′,2′′-terpyridines. RSC Adv 2016. [DOI: 10.1039/c6ra08981j] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
Photophysics of [ReCl(CO)3(4′-R-terpy-κ2N)].
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Nazir R, Balčiu̅nas E, Buczyńska D, Bourquard F, Kowalska D, Gray D, Maćkowski S, Farsari M, Gryko DT. Donor–Acceptor Type Thioxanthones: Synthesis, Optical Properties, and Two-Photon Induced Polymerization. Macromolecules 2015. [DOI: 10.1021/acs.macromol.5b00336] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Rashid Nazir
- Faculty
of Chemistry, Warsaw University of Technology, Noakowskiego 3, 00-664 Warsaw, Poland
| | - Evaldas Balčiu̅nas
- Institute
of Electronic Structure and Laser (IESL), Foundation for Research and Technology Hellas (FORTH), N. Plastira 100, 70013, Heraklion, Crete Greece
| | - Dorota Buczyńska
- Department
of Physics, Astronomy and Informatics, Nicolaus Copernicus University, Grudziadzka 5, 87-100 Torun, Poland
| | - Florent Bourquard
- Institute
of Electronic Structure and Laser (IESL), Foundation for Research and Technology Hellas (FORTH), N. Plastira 100, 70013, Heraklion, Crete Greece
| | - Dorota Kowalska
- Department
of Physics, Astronomy and Informatics, Nicolaus Copernicus University, Grudziadzka 5, 87-100 Torun, Poland
| | - David Gray
- Institute
of Electronic Structure and Laser (IESL), Foundation for Research and Technology Hellas (FORTH), N. Plastira 100, 70013, Heraklion, Crete Greece
| | - Sebastian Maćkowski
- Department
of Physics, Astronomy and Informatics, Nicolaus Copernicus University, Grudziadzka 5, 87-100 Torun, Poland
| | - Maria Farsari
- Institute
of Electronic Structure and Laser (IESL), Foundation for Research and Technology Hellas (FORTH), N. Plastira 100, 70013, Heraklion, Crete Greece
| | - Daniel T. Gryko
- Faculty
of Chemistry, Warsaw University of Technology, Noakowskiego 3, 00-664 Warsaw, Poland
- Institute
of Organic Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, Warsaw, Poland
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Gugołek A, Juśkiewicz J, Wyczling P, Kowalska D, Strychalski J, Konstantynowicz M, Zwoliński C. Productivity results and physiological response of the gastrointestinal tract of rabbits fed diets containing rapeseed cake and wheat distillers dried grains with solubles. Anim Prod Sci 2015. [DOI: 10.1071/an14206] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
This study was aimed at determining the possibility of applying rapeseed cake (RC) and wheat distillers dried grains with solubles (DDGS) in diets for HYPLUS meat-type rabbits (n = 64, aged 35–84 days). Control diet (SC) contained 5% of extracted soybean meal. In RC diet, the soybean meal was replaced by RC, in DG diet – by wheat DDGS, whereas in RC–DG diet – by a mixture of RC and wheat DDGS (2.5% each). The study included production analyses, digestibility-balance experiment and physiological assessment of gut response to experimental factors hence data was collected on daily bodyweight gains, feed intake and slaughter performance, nutrients digestibility, nitrogen retention and gut response. The latter included assessment of parameters describing the small intestinal, cecal, and colonic environment of rabbits (e.g. digesta viscosity, ammonia concentration, bacterial enzymes activity, short-chain fatty acid concentration). The highest productivity results were reported for SC group and the lowest ones for DG group. The RC and RC–DG groups were characterised by intermediate productivity. Dressing percentage and contents of carcass elements did not differ among the groups (except for the hind part). Nutrients digestibility and nitrogen retention were the highest in the SC group and the lowest in DG group. The dietary incorporation of DDGS resulted in undesired responses of the gastrointestinal tract including excessively watery digesta in the small intestine, increased concentration of cecal and colonic ammonia, enhanced activity of potentially harmful bacterial β-glucuronidase in cecal digesta, and increased cecal concentration of putrefactive short-chain fatty acids. These negative effects were not due to RC and RC–DG dietary treatments, apart from decreased dry matter concentration in the small intestine in the RC–DG group. In general, the results of our study demonstrated that 5% rape cake can be successfully incorporated into rabbit dietary regimen as a substitute of dietary soybean meal. Considering that the productivity of rabbits fed 2.5% of DDGS (with 2.5% rape cake) and these receiving 5% rape cake was comparable, optional seems also dietary inclusion of up to 2.5% wheat DDGS The higher content of DDGS (5%) in the diet deteriorated most of the growth parameters of rabbits.
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Nosal P, Kowalska D, Bielański P, Kowal J, Kornaś S. Herbal formulations as feed additives in the course of rabbit subclinical coccidiosis. Ann Parasitol 2014; 60:65-69. [PMID: 24930248] [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: 06/03/2023]
Abstract
Two simultaneous experiments were carried out in a breeding farm of New Zealand White rabbits (Oryctolagus cuniculus f. domesticus) to determine the feasibility of replacing coccidiostats with garlic and oregano preparation. The research took place during June and July, the period of the greatest threat of coccidiosis caused by Eimeria spp. (Apicomplexa: Eimeriidae). In one investigation, 40 rabbits aged 1-3 months were divided into four groups of ten animals: Group A being a control which received no coccidiostats in feed, Group B receiving the coccidiostat Baycox in water once at weaning, Group C receiving the coccidiostat robenidine in feed, and group D receiving herbal extracts in feed. In the second trial, six mated females were allocated equally to three groups analogous to A, C, and D above during pregnancy and lactation. Bulk stool samples were collected from each group of rabbits at weekly intervals for coproscopic analysis, and the production results of the animals were recorded. In the young rabbits, both the faecal coccidia oocyst counts and body weight gains were more favourable in group D than the remaining groups. Also, the female rabbits of group D were the least infected. The results demonstrate that garlic and oregano feed additives exert a positive influence on the level and course of coccidia infection, with regard to maintaining a good level of animal productivity, and these herbal extracts appear to have potential value in coccidiosis prophylaxy.
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Olejnik M, Krajnik B, Kowalska D, Lin G, Mackowski S. Spectroscopic studies of plasmon coupling between photosynthetic complexes and metallic quantum dots. J Phys Condens Matter 2013; 25:194103. [PMID: 23611979 DOI: 10.1088/0953-8984/25/19/194103] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Metallic quantum dots, or nanoparticles, have found an increasing number of applications not only in nanotechnology and nanoscience, but also in neighboring disciplines, such as chemistry and biology. Among the variety of ways to exploit the unique properties of metallic nanostructures is the notion that plasmonic effects associated with the movement of free carriers in metallic nanoparticles may enhance photosynthetic function in naturally evolved organisms. We report on optical microscopy and spectroscopy studies of three hybrid nanostructures composed of spherical gold nanoparticles and peridinin-chlorophyll-protein (PCP), a light-harvesting complex from algae. In the case of a bioconjugated structure we find efficient, concentration dependent quenching due to non-radiative energy transfer. In contrast, for the PCP complexes deposited directly on Au nanoparticles, the emission is increased as a result of the strong increase of the fluorescence quantum yield. Finally, for a structure with controlled separation between metallic nanoparticles and the light-harvesting complexes the emission features non-monotonic behavior with maximum enhancement of about 6, which is due to a combination of fluorescence and absorption rate increases. In this way we demonstrate how the design of plasmonic hybrid nanostructures determines the optical response, which is important for engineering novel systems for photovoltaics and sensor applications, for instance.
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Affiliation(s)
- Maria Olejnik
- Institute of Physics, Nicolaus Copernicus University, Torun, Poland
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43
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Kostecka M, Kowalska D, Kozłowska M, Kowalski B. Properties and Oxidative Stabilities of Enzymatically Interesterified Chicken Fat and Sunflower Oil Blend. J Oleo Sci 2013; 62:893-900. [DOI: 10.5650/jos.62.893] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Gruczynska E, Kowalska D, Kozlowska M, Kowalska M, Kowalski B. Enzymatic Interesterification of a Lard and Rapeseed Oil Equal-Weight Blend. J Oleo Sci 2013; 62:187-93. [DOI: 10.5650/jos.62.187] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Abstract
Prohormone convertase (PC)1/3 is a eukaryotic serine protease in the subtilase family that participates in the proteolytic maturation of prohormone and neuropeptide precursors such as proinsulin and proopiomelanocortin. Despite the important role of this enzyme in peptide synthesis, how PC1/3 activity is regulated is still poorly understood. Using ion exchange chromatography and two-dimensional gel electrophoresis we found that natural PC1/3 present in AtT-20 cells and bovine chromaffin granules, as well as recombinant PC1/3 secreted from overexpressing Chinese hamster ovary cells, exists as multiple ionic forms. Gel filtration and cross-linking studies revealed that protein oligomerization and aggregation contribute greatly to variability in surface charge. The most acidic forms of PC1/3 contained both inactive aggregates as well as oligomerized 87-kDa PC1/3 that exhibited stable activity which was partially latent and could be revealed by dilution. No such latency was observed for the more basic, 66/74-kDa forms of PC1/3. Fractions containing these species were stabilized by preincubation with micromolar concentrations of either fluorogenic substrate or peptides containing pairs of basic residues. In addition, the most active form of 87-kDa PC1/3, a probable homodimer, was activated by preincubation with these same peptides. Cleavage by PC1/3 is often the initiating step in the biosynthetic pathway for peptide hormones, implying that this is a natural step for regulation. Our data suggest that enzyme oligomerization and peptide stabilization represent important contributing factors for the control of PC1/3 activity within secretory granules.
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Affiliation(s)
- Akina Hoshino
- Department of Anatomy and Neurobiology, University of Maryland-Baltimore, 20 Penn Street, HSFII Room S251, Baltimore, Maryland 21201, USA
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Gugołek A, Zabockłi W, Kowalska D, Janiszewski P, Konstantynowicz M, Strychalski J. Nutrient digestibility in Arctic fox (Vulpes lagopus) fed diets containing animal meals. ARQ BRAS MED VET ZOO 2010. [DOI: 10.1590/s0102-09352010000400026] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Three digestibility experiments on Arctic foxes were carried out. Control groups were fed standard diets (C1 and C2) composed of fresh or frozen animal by-products and steamed ground grain. Dry experimental diets (E1 and E2) contained animal meals, extracted meals and fat, were mixed with water prior to administration. In a preliminary experiment, the digestibility of dry diet E1 moistened with water for 15min and 24h was compared to determine the optimum moistening time during the experimental period proper. The preliminary experiment showed that moistening time had no significant effect on digestibility. In the main experiment, two independent digestibility trials were performed to compare the digestibility of diets fed to foxes during growth (C1 vs. E1) and fur development (C2 vs. E2). Better nutrient digestibility was noted for control diets, compared to experimental. The greatest differences were reported for total protein digestibility. Protein contained in meals undergoes denaturation during heat treatment, which reduces digestibility. It was found that the retention of nitrogen in relation to nitrogen digestion was higher in foxes fed experimental diets (E1 and E2).
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Affiliation(s)
- A. Gugołek
- University of Warmia and Mazury in Olsztyn, Poland
| | - W. Zabockłi
- University of Warmia and Mazury in Olsztyn, Poland
| | - D. Kowalska
- National Research Institute of Animal Production, Poland
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Ostrowska-Ligeza E, Bekas W, Kowalska D, Lobacz M, Wroniak M, Kowalski B. Kinetics of commercial olive oil oxidation: Dynamic differential scanning calorimetry and Rancimat studies. EUR J LIPID SCI TECH 2010. [DOI: 10.1002/ejlt.200900064] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Kowalska D, Liu X, Tripathy U, Mahammed A, Gross Z, Hirayama S, Steer RP. Ground- and Excited-State Dynamics of Aluminum and Gallium Corroles. Inorg Chem 2009; 48:2670-6. [DOI: 10.1021/ic900056n] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Dorota Kowalska
- Department of Chemistry, University of Saskatchewan, 110 Science Place, Saskatoon, SK, Canada S7N 5C9, and Schulich Faculty of Chemistry, Technion − Israel Institute of Technology, Haifa 32000, Israel
| | - Xia Liu
- Department of Chemistry, University of Saskatchewan, 110 Science Place, Saskatoon, SK, Canada S7N 5C9, and Schulich Faculty of Chemistry, Technion − Israel Institute of Technology, Haifa 32000, Israel
| | - Umakanta Tripathy
- Department of Chemistry, University of Saskatchewan, 110 Science Place, Saskatoon, SK, Canada S7N 5C9, and Schulich Faculty of Chemistry, Technion − Israel Institute of Technology, Haifa 32000, Israel
| | - Atif Mahammed
- Department of Chemistry, University of Saskatchewan, 110 Science Place, Saskatoon, SK, Canada S7N 5C9, and Schulich Faculty of Chemistry, Technion − Israel Institute of Technology, Haifa 32000, Israel
| | - Zeev Gross
- Department of Chemistry, University of Saskatchewan, 110 Science Place, Saskatoon, SK, Canada S7N 5C9, and Schulich Faculty of Chemistry, Technion − Israel Institute of Technology, Haifa 32000, Israel
| | - Satoshi Hirayama
- Department of Chemistry, University of Saskatchewan, 110 Science Place, Saskatoon, SK, Canada S7N 5C9, and Schulich Faculty of Chemistry, Technion − Israel Institute of Technology, Haifa 32000, Israel
| | - Ronald P. Steer
- Department of Chemistry, University of Saskatchewan, 110 Science Place, Saskatoon, SK, Canada S7N 5C9, and Schulich Faculty of Chemistry, Technion − Israel Institute of Technology, Haifa 32000, Israel
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Nosal P, Kowal J, Nowosad B, Bieniek J, Kowalska D. [Dynamics of endoparasite infections in rabbits at different rearing regimes]. Wiad Parazytol 2009; 55:173-177. [PMID: 19670533] [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: 05/28/2023]
Abstract
This study was intended to evaluate the occurrence and seasonality of infection of coccidian and helminth parasites, in three rabbit warrens differently managed. Mothers stayed with their offspring on deep litter (farm A, 90 dams), in boxes cleaned weekly (farm B, 30 dams) or on slatted floor (farm C, 10 females), whereas all the young after weaning (1 to 5 months of age) were kept in cages with slatted floor. Animals were fed a complete balanced pelleted feed (warrens A and B) or traditional forage (herd C). Antiparasitic treatment involved coccidiostatic drugs. Robenidine (alternately with Lerbec in farm A) was added to food in the first two farms, whilst Sulfatyf mixed with water was given once after weaning in farm C. A total of 203 individual faecal samples from females of breeding stock, and 133 pooled samples from young animals, were collected on an annual cycle during 2007-2008 (February-January), and analyzed according to a modified concentration McMaster method. Coccidians were identified based on sporulated oocysts. A number of coccidian species (Eimeria perforans, E. media, E. magna, E. irresidua, E. exiqua, E. coecicola, and E. piriformis) were observed in all farms. The most pathogenic species--E. intestinalis was found both in farm A and B, whereas E. flavescens and E. stiedae--only in the former. The level of infection was high, especially in young rabbits, with the prevalence of 94.9 to 100% and mean intensity from 11,161 to 28,871 oocysts per 1 g of faeces (OPG) in a particular warren. The highest intensity of infection was observed in May, when the mean output increased to 29,454, 56,952, and 23,815 OPG in warrens A, B, and C, respectively. A nematode, Passalurus ambiguus, was detected in all searched farms, with the prevalence from 14.1% to 27.5%, depending on a farm. The species was more often seen in the first part of year. The other helminths (Trichostrongylus retortaeformis, Graphidium strigosum, and Trichuris leporis) were found only in rabbits of warren C. In this warren, the forage of farm origin was suggested to be prepared in a proper way in order to protect it from nematode transmission. The presence of coccidia and their specific composition has been continuously monitored in all farms, to estimate the efficiency of prophylactic measures undertaken.
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Affiliation(s)
- Paweł Nosal
- Katedra Zoologii i Ekologii, Uniwersytet Rolniczy, Al. Mickiewicza 24/28, 30-059 Kraków.
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Kowalska D, Liu J, Appel JR, Ozawa A, Nefzi A, Mackin RB, Houghten RA, Lindberg I. Synthetic small-molecule prohormone convertase 2 inhibitors. Mol Pharmacol 2008; 75:617-25. [PMID: 19074544 DOI: 10.1124/mol.108.051334] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
The proprotein convertases are believed to be responsible for the proteolytic maturation of a large number of peptide hormone precursors. Although potent furin inhibitors have been identified, thus far, no small-molecule prohormone convertase 1/3 or prohormone convertase 2 (PC2) inhibitors have been described. After screening 38 small-molecule positional scanning libraries against recombinant mouse PC2, two promising chemical scaffolds were identified: bicyclic guanidines, and pyrrolidine bis-piperazines. A set of individual compounds was designed from each library and tested against PC2. Pyrrolidine bis-piperazines were irreversible, time-dependent inhibitors of PC2, exhibiting noncompetitive inhibition kinetics; the most potent inhibitor exhibited a K(i) value for PC2 of 0.54 microM. In contrast, the most potent bicyclic guanidine inhibitor exhibited a K(i) value of 3.3 microM. Cross-reactivity with other convertases was limited: pyrrolidine bis-piperazines exhibited K(i) values greater than 25 microM for PC1/3 or furin, whereas the K(i) values of bicyclic guanidines for these other convertases were more than 15 microM. We conclude that pyrrolidine bis-piperazines and bicyclic guanidines represent promising initial leads for the optimization of therapeutically active PC2 inhibitors. PC2-specific inhibitors may be useful in the pharmacological blockade of PC2-dependent cleavage events, such as glucagon production in the pancreas and ectopic peptide production in small-cell carcinoma, and to study PC2-dependent proteolytic events, such as opioid peptide production.
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Affiliation(s)
- Dorota Kowalska
- Department of Anatomy and Neurobiology, University of Maryland at Baltimore, Baltimore, Maryland 21201, USA
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