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1

Geographical Origin and Solvent Type Impact on Inula viscosa (L.) Aiton Grown in El Menzel – Morocco – Insights into Bioactivity and Applications

Tlemcani Sara, El Ouadrhiri Faiçal, Hmamou Anouar, Lahkimi Amal, Touijer Hanane, Kara Mohammed, Idrissi Amine Mounadi, Bekkari Hicham

Ecological Engineering & Environmental Technology

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2024

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Vol. 25, iss. 2

168--177

EN

Geographical origin and environmental factors have a significant impact on the constituents and the biological properties of medicinal and aromatic plants. Herein, the Inula viscosaplant grown in El Menzel – Morocco were investigated with a focus on the impact of geographical province and solvent type on the mass yield and the biological activities of plant extracts. Chemical composition was characterized by gas chromatography/mass spectrometry (GC/MS). Antimicrobial activity was determined using the disk diffusion method and the microdilution test against eight clinical fungal, Gram-positive and Gram-negative bacterial isolates. The chemical composition results showed that the plant has good nutritional quality in terms of protein, carbohydrates, lipids and dietary fiber. In fact, alkaloids and saponisides are the most predominant chemical compounds in Inula vuscosa. Meanwhile, eighty volatile compounds were identified, representing 95% of the total essential oil content, the main component of which is tetra-pentacontane (11.26%). Furthermore, results showed high antioxidant activity, with efficacy increasing in the order: essential oil > chloroform extract > ethereal extract > ethanolic extract. In addition, both chloroformic extract and essential oil demonstrated significant antibacterial activity against all strains tested. This study highlights the influence of geographical variations and extraction solvents on the bioactivity of Inula viscosa, offering insights into its potential applications in pharmacology and nutraceuticals.

2

Wytłoki z jabłek : alternatywne możliwości zastosowania ekstraktów roślinnych

Korol Magdalena, Sikora Elżbieta

Przemysł Chemiczny

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2023

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T. 102, nr 9

900--905

PL

Jabłko jest jednym z głównych owoców przetwarzanych na całym świecie, generującym ogromną ilość przemysłowych produktów ubocznych, zwanych wytłokami jabłkowymi. Wytłoki jabłkowe są źródłem cennych związków bioaktywnych wykazujących właściwości przeciwutleniające, przeciwbakteryjne, przeciwwirusowe i przeciwzapalne, w związku z czym ich potencjał zagospodarowania jest bardzo duży w różnych gałęziach przemysłu. Wartykule przedstawiono sposoby wykorzystania i utylizacji wytłoków jabłkowych oraz omówiono właściwości ekstraktów roślinnych i możliwości ich zastosowania.

EN

A review, with 63 refs., of plant extracts as sources of active substances with antioxidant, antimicrobial, antiviral and anti-inflammatory properties, with particular emphasis on apple pomace, a by-product in the production of juices and purees. The steady increase in the apple harvest index in Europe observed for years and the share of individual countries in their processing were discussed.

3

Preliminary study on antimicrobial activities of skin mucus from by-catch of Elasmobranch species

Aydoğdu Elif Özlem Arslan, Kesiktaş Mert, Sanli Nazmiye Ozlem, Güngör Nihal Doğruöz, Sancar Serap, Yildiz Taner, Yemişken Emre

Oceanological and Hydrobiological Studies

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2023

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Vol. 52, No. 2

137--146

EN

Skates and rays, which are widely encountered in the by-catch of fisheries activities from the Sea of Marmara and banned for sale by regulation, are species that are discardedif caught. For this reason, in our study, we aimed to determine the bioactive potentials of these species, considered fishing waste, by investigating the skin secretions and microbial flora. In our study, both the skin flora and mucus contents of the discarded species Dasyatis pastinaca (Linnaeus,1758), Myliobatis aquila (Linnaeus, 1758), and Raja clavata(Linnaeus, 1758) caught in the Sea of Marmara were investigated to determine their potential antimicrobial activities. A total of 164 bacteria were isolated from the epidermal mucus of the three batoid species. Antibacterial activity was observed from three isolated bacteria against Escherichia coli, Vancomycin-resistant Enterococcus faecium, E. faecalis, and Bacillus subtilis. Additionally, the highest antibacterial activity was observed for skin mucus of R. clavata. Mouse fibroblast cell viability was challenged with mucus secretions. M. aquila and R. clavata mucus secretions exhibited no observable change after 24 and 48 hours. The assays indicated that both the isolates and the skin mucushave potential antimicrobial activity against opportunistic pathogens.

4

Antimicrobial activity, viability, and physicochemicalproperties of an MTA-type cement with differentconcentrations of bismuth trioxide

Martínez-Hernández Miryam, Manzo-García Daniel, Ramírez-Ortega Juana Paulina, Arreguín-Cano Juan Antonio, Chávez-Cortéz Elda Georgina, Arenas-Alatorre Jesús Ángel, Rodríguez-Chávez Jacqueline Adelina, Flores-Ledesma Abigailt

Materials Science Poland

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2023

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Vol. 41, No. 2

339--353

EN

In medicine, bismuth is used as an antimicrobial agent. In dentistry, it is used primarily to increase radiopacity in someendodontic materials. The objective is to evaluate the antimicrobial activity, cell viability, pH, solubility, film thickness, andsetting time of a mineral trioxide aggregated (MTA)-types of cement with different concentrations of bismuth trioxide. Threeexperimental MTA-types of cement with a bismuth trioxide (Bi2O3) concentration of 15 wt%, 20 wt%, and 25 wt% were used.The antimicrobial activity test was conducted on Streptococcus mutans and Porphyromonas gingivalis strains. Cell viability wasmeasured by the quantitative colorimetric assay using the MTT (3-[4,5-dimethylthiazol-2-yl]-2,5 diphenyltetrazolium bromide)assay on a mouse fibroblast cell line (L929). Solubility, film thickness, and setting time were performed according to ISO 6876.The lowest Bi2O3concentrations showed the best antimicrobial activity and cell viability. pH, solubility, setting time, and filmthickness did not show statistically significant differences between the different Bi2O3concentrations tested.

5

Chemical synthesis by precipitation of zinc oxide for boimedical application

Medjber Farida Ait, Amokrane Rachida, Djafri Dihia, Belmouhoub Zaina, Bentaha Dyhia, Yefsah Said

Advances in Materials Science

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2023

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Vol. 23, nr 2(76)

77--87

EN

The objective of the study is the chemical synthesis of ZnO powders, from ZnCl2 and NaOH solutions according to an appropriate procedure. The powders (a) and (b) obtained underwent various characterizations such as: optical microscopy, SEM, UV, BET, IR, XRD and antimicrobial activity. The results showed the inhomogeneous distribution, the nanometric size, the absorbance at 353 and 346 nm and the specific surface of 25.701 and 30.534 cm2/g of the particles, the presence of all the characteristic bands of ZnO which was confirmed by XRD and very good bacterial sensitivity of the two ZnO powders.

6

Aminokwasy, glikany, peptydy i białka w ścieżkach diagnostycznych i terapeutycznych chorób cywilizacyjnych XXI wieku : projektowanie i charakterystyka fizykochemiczna oraz strukturalna

Bylińska Irena, Dzierżyńska Maria, Giżyńska Małgorzata, Guzow Katarzyna, Jankowska Elżbieta, Jurczak Przemysław, Kaczyński Zbigniew, Karska Natalia, Kowalczyk Agnieszka, Kuncewicz Katarzyna, Orlikowska Marta, Sawicka Justyna, Spodzieja Marta, Szpakowska Nikola, Szymańska Aneta, Wieczerzak Ewa, Witkowska Julia, Rodziewicz-Motowidło Sylwia

Wiadomości Chemiczne

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2022

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[Z] 76, 5-6

393--431

EN

The civilization diseases of the 21st century are non-infectious disorders, affecting a large part of modern society. They are associated with the significant development of industry and technology, and hence with environmental pollution and an unhealthy lifestyle. These factors have led to the development of many civilization diseases, which currently include: cardiovascular diseases, respiratory diseases, diabetes, obesity, malignant tumors, gastrointestinal diseases, mental disorders and allergic diseases. The development of technologies, including modern therapies and new drugs, resulted in increase in life expectancy. This creates a global problem of an aging population with an increasing number of diseases of the old age, i.e. dementias. In addition, sedentary lifestyles and changing diets are the reasons why more and more people develop metabolic diseases, as well as neurological and cognitive disorders characterized by progressive damage to nerve cells and dementia. Currently, problem on a global scale is also the growing resistance to existing antimicrobial drugs. Therefore, the scientists face many challenges related to searching for the causes of these diseases, their diagnosis and treatment. Scientific research conducted at the Department of Biomedical Chemistry at the Faculty of Chemistry of the University of Gdańsk is part of this research trend. In this publication, we discuss various research topics with the long-term aim of solving the problems associated with the diseases mentioned above. The following chapters are dedicated to (i) looking for new effective fluorophores with diagnostic and anti-cancer activity; (ii) designing of new compounds with antibacterial and antiviral activity and their synthesis; (iii) investigating the mechanisms of amyloid deposit formation by human cystatin C and possibilities of inhibition of this process; (iv) designing and studies of compounds activating the proteasome with the potential to suppress the development of neurodegenerative diseases; (v) designing peptide fibrils and hydrogels as drug carriers; (vi) searching for peptide inhibitors of immune checkpoint as potential drugs for immunotherapy; (vii) studying the mechanism of action of selected herpesviruses by determining the structure of viral proteins and (viii) studying the composition of natural glycans and glycoconjugates in order to better understand the mechanisms of interaction of bacteria with the environment or with the host.

7

Chemical Composition and Antimicrobial Activity of Essential Oil of Wild and Cultivated Rosmarinus Officinalis from Two Moroccan Localities

Elyemni Majda, El Ouadrhiri Faiçal, Lahkimi Amal, Elkamli Taha, Bouia Abdelhak, Eloutassi Noureddine

Journal of Ecological Engineering

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2022

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Vol. 23, nr 3

214--222

EN

This research aimed to measure the impact of provenance on the yield, chemical profile and antimicrobial activity of Rosmarinus officinalis essential oil (EO) collected from cultivated and wild plants from two different regions in Morocco (Fez and Figuig). The chemical composition analysis was accomplished utilizing the GC-MS techniques. Sixteen compounds were identified in the EO of both samples, dominated by 1,8-cineole (32.18%), camphor (16.20%) and α-pinene (15.40%) in cultivated type. The α-pinene (51.19) presents the majority compound in the rosemary samples collected from the wild populations.The antimicrobial activity was investigated by using the broth dilution methods against yeast, four bacterial strains and two molds. Rosemary aerial part provided EO with the highest yield and comes from Figuig. The GC-MS analysis demonstrated the existence of two chemotypes of oils: α-pinene as well as 1,8-cineole/camphor/α-pinene. Both EOs showed good antimicrobial activity against all microbial strains. The essential oil produced by Fez plants was the most effective against the selected microorganisms having MIC values of 0.315–2.5 mg/L.

8

Materials based on chitosan enriched with zinc nanoparticles for potential applications on the skin

Kulka Karolina, Szmejkowska Andżelika, Sionkowska Alina, Wypij Magdalena, Golińska Patrycja

Engineering of Biomaterials

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2022

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vol. 25, no. 167

24--31

EN

Chitosan as a nontoxic, biodegradable, and biocompatible biopolymer with film-forming properties can also be modified to improve its parameters. Modification of polymer films by the addition of nanoparticles is an increasingly common solution due to the higher efficiency of products at the nanoscale compared to the macroscale. In this work, thin chitosan films enriched with biogenic zinc oxide nanoparticles (ZnONPs) from Fusarium solani IOR 825 were obtained by the solvent evaporation method. The influence of nanoadditive on the physicochemical, mechanical, and antimicrobial properties of the polymeric matrix was evaluated. Two different concentrations of ZnONPs were added to the chitosan solution. Spectrometric measurements, mechanical tests, microscopic imaging, and microbiological tests were performed for nanoparticlesmodified and control samples. Analysis revealed that ZnONPs influence the properties of chitosan films. FTIR spectroscopy showed changes that are the result of interactions between polymer matrix and the additive. Modified samples were characterized by increased values of Young’s modulus and tensile strength. SEM analysis combined with energy-dispersive X-ray spectrometry confirmed the presence of zinc in the modified films. The addition of nanoparticles slightly affected the surface morphology of the tested samples, and an increase in roughness was observed. Microbiological tests showed the biostatic activity of the films containing ZnONPs. The obtained films based on chitosan with the addition of ZnONPs can be considered easy-to-obtain biomaterials with potential use as cosmetic and biomedical products.

9

Durable Wash-Resistant Antimicrobial Treatment of Knitted Fabrics

Krisciunaite Jolita, Kalendraite Brigita, Ragelienė Lina, Merkelyte Evelina, Mikucioniene Daiva

Autex Research Journal

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2022

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Vol. 22, no. 4

373--382

EN

Antimicrobial finishing is increasingly used in textile products to increase their functionality. Antimicrobial properties became extremely important during the COVID-19 situation. The main problems faced by antimicrobial finishing are nontoxicity and durability (wash-resistance) of antibacterial activity. Also, it is important to determine whether the antimicrobial finishing changes comfort properties, such as air permeability. This paper deals with the durability of antimicrobial treatment, that is, resistance to washing, and effect on the structural changes that may have influence on the comfort properties, such as permeability to air. Knits of various raw compositions were antimicrobial-treated with the new commercial antimicrobial product, Si Bactericidal (Smart Inovation, Portugal). After the antimicrobial treatment, knitted specimens were washed 50 times and changes in their structural parameters, air permeability, and antimicrobial activity were measured. It was found that the mentioned antimicrobial treatment gives very good antimicrobial activity to the treated fabric and is wash-resistant and long-lasting. Also, it does not change dimensions and permeability to air of the treated fabrics with some exceptions of cotton-based knitted structures.

10

Zastosowanie olejku tymiankowego do przeciwdrobnoustrojowego wykończenia materiałów skórzanych

Gendaszewska Dorota, Wionczyk Barbara, Boniecki Paweł, Bednarek Agata

Technologia i Jakość Wyrobów

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2021

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R. 66

111--123

PL

Olejki eteryczne ze względu na swoje właściwości przeciwdrobnoustrojowe znalazły szerokie zastosowanie w przemyśle kosmetycznym, farmaceutycznym i spożywczym. Z uwagi na powszechną dostępność olejków eterycznych, ich wysoką skuteczność przeciwdrobnoustrojową oraz bezpieczeństwo, związki te są rozpatrywane również jako zielona alternatywa dla środków ochrony garbowanej skóry. Celem pracy było wyznaczenie aktywności przeciwdrobnoustrojowej garbowanych skór bydlęcych zmodyfikowanych olejkiem tymiankowym w stężeniu 5%. Skóry modyfikowane olejkiem eterycznym wywoływały silny efekt przeciwgrzybiczy w odniesieniu do grzybów Ch. globosum oraz zadowalający lub dobry efekt przeciwbakteryjny w odniesieniu do bakterii E. coli. Zastosowanie do modyfikacji skór olejku tymiankowego w postaci 5% może być alternatywą dla biocydów stosowanych w garbarstwie. Potrzeba jednak dalszych badań m.in. w zakresie wpływu badanego olejku na jakość skór w dłuższym okresie czasu.

EN

Due to their antimicrobial properties, essential oils are widely used in the cosmetics, pharmaceutical and food industries. Due to the widespread availability of essential oils, their high antimicrobial efficacy and safety, these compounds are also considered a green alternative to tanned leather protection products. The aim of the study was to determine the antimicrobial activity of tanned cattle hides modified with thyme oil at a concentration of 5%. Skins modified with essential oil caused a strong antifungal effect against Ch. globosum and a satisfactory or good antimicrobial effect against E. coli. The use of thyme oil in the form of 5% for modification of skins may be an alternative to biocides used in tanning. However, further research is needed, e.g. in terms of the influence of the tested oil on the quality of leathers over a longer period of time.

11

Aktywność przeciwdrobnoustrojowa tkanin bawełnianych z wykończeniem biocydowym

Gendaszewska Dorota, Miśkiewicz Katarzyna, Gajewski Robert

Technologia i Jakość Wyrobów

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2021

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R. 66

65--78

PL

Celem pracy było zbadanie aktywności przeciwdrobnoustrojowej tkanin bawełnianych przeznaczonych na podszewki do obuwia. Badaniem objęto próbę kontrolną bez wykończenia przeciwdrobnoustrojowego oraz cztery próby tkaniny bawełnianej modyfikowane preparatami zawierającymi w swoim składzie środki nadające materiałom właściwości hydrofobowe i przeciwdrobnoustrojowe. Badania wykonano w odniesieniu do dwóch bakterii: Staphylococcus aureus i Escherichia coli oraz grzybów Aspergillus niger i drożdży Candida albicans. Tkaniny bawełniane modyfikowane preparatami zawierającymi Sanitized T99-19 wykazywały dobry efekt hamujący wzrost bakterii S. aureus i E. coli. Poza tym tkaniny te wykazywały średni lub dobry efekt przeciwgrzybowy wobec grzybów A. niger i drożdży C. albicans. Natomiast tkanina modyfikowana preparatem zawierającym Sanitized TH22-29 wykazała bardzo dobry efekt hamujący wzrost bakterii oraz charakteryzowała się bardzo dobrymi właściwościami przeciwgrzybowymi. Dodatek 4-5% preparatu Sanitized T99-19 lub Sanitized TH22-29 w sposób wystarczający nadaje właściwości przeciwdrobnoustrojowe tkaninom bawełnianym.

EN

The aim of the study was to investigate the antimicrobial activity of cotton fabrics intended for footwear linings. The study included a control sample without antimicrobial treatment and four samples of cotton fabric modified with preparations containing agents that give the materials hydrophobic and antimicrobial properties. The tests were performed for two bacteria: Staphylococcus aureus and Escherichia coli, as well as Aspergillus niger and Candida albicans yeast. Cotton fabrics modified with preparations containing Sanitized T99-19 showed a good inhibitory effect on the growth of S. aureus and E. coli. In addition, these fabrics showed a moderate or good antifungal effect against A. niger and C. albicans. The fabric modified with Sanitized TH22- 29 preparation showed a very good inhibitory effect on the growth of the tested bacteria and was characterized by very good antifungal properties. The addition of 4-5% Sanitized T99-19 or Sanitized TH22-29 is sufficient to impart antimicrobial properties to cotton fabrics.

12

Mikrobiologiczne metody oznaczania aktywności antybiotyków

Sztucki Damian

LAB Laboratoria, Aparatura, Badania

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2021

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R. 26, nr 1

46--48

13

ZnO coatings ON Ti6Al4V substrate: structural and antibacterial properties in literature review and research

Sukhodub Leonid, Sukhodub Luidmila, Kumeda Mariia, Panda Anton, Baron Petr

Management Systems in Production Engineering

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2020

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nr 4 (28)

318--324

EN

ZnO, ZnO/Alginate coatings were obtained on the pre-anodized Ti6Al4V substrates by the thermal substrate deposition method (TSD). In the frame of this work, the TSD method was at first applied for obtaining ZnO coating from aqueous alginate-containing and alginate-free solutions on a metal surface. XRD, SEM analyses show that the biopolymer has a significant influence on the formation of the coating, their morphology, texture, structure of ZnO nanoparticles. The average rate of ZnO deposition from alginate containing solution is 30 μm/min, while from alginate-free solutions – 6 μm/min. In the presence of alginate, spherical particles with flower-shaped inclusions are formed, while from the polymer-free solution, single crystals in the form of tetrahedral were obtained. Zone of inhibition test against Gram-positive S. aureus ATCC 25923 and Gram-negative E. coli ATCC 25922 proves the antibacterial activity of the ZnO/Alg coatings.

14

The impact of production of silver nanoparticles using soil fungi and its applications for reducing irrigation water salinity

Yaseen Rabaa, Kotp Yousra H., Eissa Doaa

Journal of Water and Land Development

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2020

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no. 46

216--228

EN

In the present work, the dried biomass of soil isolated fungus Eurotium cristatum was used for synthesizing silver nanoparticles (AgNPs). The synthesized AgNPs were spherical in shape with average diameter of 16.56 nm and displayed maximum absorbance at 418. Fourier transform infrared (FTIR) study indicated the presence and binding of proteins with myco-produced silver nanoparticles. The optimum conditions for AgNPs biosynthesis were found to be at temperature of 40°C, pH of 8.0, substrate concentration of 500 ppm and fungal biomass wt. of 0.8 g. The AgNPs showed antibacterial activity against Staphylococcus aureus, Listeria monocytogenes, Escherichia coli and Shigella flexneri. AgNPs was built-in thin film nanocomposite (TFNC) membrane and the impacts of nanomaterial composition on membrane properties and desalination process were studied. The AgNPs produced membrane TFNC had better filtration performances than pure thin film composite membrane TFC. The TFNC membrane had enhanced water flux (32.0 vs. 16.5 dm3∙m–2∙h–1) and advanced NaCl rejection (91.7 vs. 89%) compared to the TFC membrane. A pot experiment was conducted to evaluate the effect of the irrigation with desalinated water on yield and productivity of essential oil of the sweet basil (Ocimum basilicum L.) and lavender (Lavandula multifida L.). The irrigation with desalinated water reduced significantly the soil reaction, soil electrical conductivity (EC), sodium adsorption ratio and exchangeable sodium percent in rhizospheric soil, it also enhanced the growth and oil yield of both plants compared with those irrigated with salt water.

15

Surface Modification of Nylon 6 Multifilament Yarns with 3-Aminopropyltriethoxysilane and Study of its Special Properties

Baseri Somayeh

Fibres & Textiles in Eastern Europe

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2020

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Vol. 28, no. 2 (140)

29--34

EN

The aim of the research was the solvent-based impregnation of poly(lactic acid) (PLA) withThe present work developed a new and simple method for producing engineered nylon yarns by two-step coating. The nylon yarns were first immersed in a solution containing a silane coupling agent (3-Aminopropyltriethoxysilane) to improve the adhesion properties. Then the modified samples were heat-treated in a solution containing cupric nitrate, hydroxylamine sulfate, and sodium pyrosulfite. Microstructural imaging of the coated surfaces shows a homogeneously formed coating layer without any microscopic cracks or discontinuity in the sample surface. Results showed that this two-step coating can produce nylon yarns with good electrical conductivity and anti-microbial properties. The coated samples displayed very good light fastness and washing fastness to multiple washes in terms of electrical conductivity changes and anti-microbial activity.

PL

W ramach badań opracowano nową i prostą metodę wytwarzania specjalnych przędz nylonowych poprzez powlekanie dwuetapowe. W celu poprawy właściwości adhezyjnych przędze nylonowe zanurzono w roztworze zawierającym silanowy środek sprzęgający (3-aminopropylotrietoksysilan). Następnie zmodyfikowane próbki poddano obróbce cieplnej w roztworze zawierającym azotan miedzi, siarczan hydroksyloaminy i pirosiarczyn sodu. Obrazowanie mikrostrukturalne powlekanych powierzchni pokazało jednorodnie utworzoną warstwę powłokową bez mikroskopijnych pęknięć lub nieciągłości na powierzchni próbki. Wyniki wykazały, że ta dwustopniowa powłoka może wytwarzać przędzę nylonową o dobrej przewodności elektrycznej i właściwościach przeciwdrobnoustrojowych. Pokryte próbki wykazywały bardzo dobrą odporność na światło i odporność na wielokrotne pranie pod względem zmian przewodności elektrycznej i aktywności przeciwdrobnoustrojowej.

16

Biocidal Activity of Selected Preparations for Leather Protection

Falkiewicz-Dulik Michalina

Fibres & Textiles in Eastern Europe

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2020

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Vol. 28, no. 1 (139)

115--122

EN

This research work involved the selection of biocides for the antimicrobial treatment of leathers. The scope of the research work covered microbiological tests of leather samples tanned utilising the same technology, with microbiological treatment made using 9 different preparations, as well as a test of leather without biostabilisation. Commercial biocides taken for inwestigation were as follows: NS 500 – an aqueous solution of nanosilver 500 ppm, ODH – tea tree oil, and OP – orange oil. Preparations prepared by diluting the purchased products were as follows: S27-22 – an aqueous solution containing silver chloride and titanium dioxide, SH 22-27 – an aqueous solution containing zinc pyrithione, ST 99-19 – an aqueous solution containing dimethyltetradecyl [3-(trimethoxysilyl)propyl]ammonium chloride, SU – an aqueous solution containing polyhexamethylene biguanide, and SGP – a saturated solution of aluminum potassium sulfate. Also a preparation was made by combining NS 500 M250 – 500 ppm nanosilver solution and a 250 ppm copper colloid. Evaluation of the effectiveness of biostabilisation of the leather samples and antimicrobial activity of the preparations used was carried out. Staphylococcus aureus and Escherichia coli bacteria and Candida albicans, Aspergillus brasiliensis and Trichophyton mentagrophytes fungi were used in the study. The assessment of microbial growth on samples was carried out according to Polish standards. Assessment of the resistance to bacteria and C. albicans yeast was made according to the PN-EN ISO 20645: 2006 standard – a method of diffusionon an agar plate. Assessment of the resistance to A. brasiliensis and T. mentagrophytes fungi was made according to the PN-EN ISO 14119: 2005 standard. Among the tested preparations to protect leathers against the effects of microorganisms, overall efficacy was obtained for SH 22-27, NS 500 M 250, SU and ODH.

PL

Praca obejmowała dobór preparatów biobójczych do obróbki antymikrobowej skór. Zakres tematyczny obejmował badania mikrobiologiczne prób skór wyprawionych według tej samej technologii z obróbką mikrobiologiczną wykonaną przy użyciu 9 przygotowanych preparatów, a także test skóry bez biostabilizacji. Dokonano oceny skuteczności biostabilizacji skór i aktywności antymikrobowej użytych preparatów. Spośród testowanych preparatów do ochrony skóry przed działaniem drobnoustrojów najkorzystniejszą ocenę uzyskały: SH 22-27 zawierający pirytionian cynku, NS 500 M 250 zawierający nano cząsteczki srebra i miedzi, SU zawierający poliheksametylenobiguanidynę, ODH zawierający olejek melaleuca.

17

Antimicrobial Activity of Gloriosa superba, Cyperus rotundus and Pithecellobium dulce with Different Solvents

Gobalakrishnan Mariappan, Saravanan Dhandapani

Fibres & Textiles in Eastern Europe

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2020

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Vol. 28, no. 4 (142)

67--71

EN

Nowadays, antimicrobial finishing is a primary requirement for cotton apparel products. Many synthetic antimicrobial agents were used previously, but due to the non-ecofriendly nature of synthetic antimicrobial agents, natural herbal based antimicrobial agents are used these days. The various herbs used in Indian ayurveda medicines, which possess antimicrobial properties, are often applied to textile materials to impart functional properties required for microbicidal effects. In this work, Gloriosa superba, Cyperus rotundus and Pithecellobium dulce were used as antimicrobial agents. The herbs were extracted with different solvent sincluding methanol, ethanol, benzene and water to analyse the influence of these solvents on the efficacy of antimicrobial activity. These extracts were applied on cotton fabrics by the exhaust method and the degree of antimicrobial activity analysed by the zone inhibition method. All the herbs listed in this paper showed good antimicrobial properties against various microbes. However, not all the solvents used in the extraction showed good results in antimicrobial activity against all the microbes. Methanol extracts showed better antimicrobial activity in all three herbs due to their inherent antimicrobial properties. Thus, it is proposed to use methanol as a solvent for the extraction of these herbs to obtain concentrates suitabe for antimicrobial activity in cotton fabrics.

PL

Obecnie wykończenie przeciwdrobnoustrojowe jest podstawowym wymogiem dla produktów z bawełny. Wcześniej stosowano wiele syntetycznych środków przeciwdrobnoustrojowych, ale ze względu na ich nieekologiczny charakter, obecnie stosuje się naturalne środki przeciwdrobnoustrojowe na bazie ziół. Różne zioła stosowane w indyjskich lekach ajurwedyjskich, które mają właściwości przeciwdrobnoustrojowe, są często nakładane na materiały tekstylne, aby nadać im właściwości funkcjonalne wymagane do działania bakteriobójczego. W pracy jako środki przeciwdrobnoustrojowe zastosowano Gloriosa superba, Cyperus rotundus i Pithecellobium dulce. Zioła ekstrahowano różnymi rozpuszczalnikami, w tym metanolem, etanolem, benzenem i wodą, aby przeanalizować wpływ tych rozpuszczalników na skuteczność działania przeciwdrobnoustrojowego. Ekstrakty te nałożono na tkaniny bawełniane metodą czerpaną, a stopień aktywności przeciwdrobnoustrojowej analizowano metodą hamowania strefowego. Wszystkie zioła wymienione w artykule wykazały dobre właściwości przeciwdrobnoustrojowe przeciwko różnym drobnoustrojom. Jednak nie wszystkie rozpuszczalniki użyte do ekstrakcji wykazały dobre wyniki w działaniu przeciwdrobnoustrojowym przeciwko wszystkim drobnoustrojom. Ekstrakty metanolowe wykazywały lepszą aktywność przeciwdrobnoustrojową we wszystkich trzech ziołach ze względu na ich nieodłączne właściwości przeciwdrobnoustrojowe. Dlatego zaproponowano stosowanie metanolu jako rozpuszczalnika do ekstrakcji ziół w celu uzyskania koncentratów odpowiednich do działania przeciwdrobnoustrojowego w tkaninach bawełnianych.

18

Assessment of cytotoxic and antimicrobial activity of selected gingival haemostatic agents – in vitro study

Szymonowicz Maria, Rusak Agnieszka, Pajączkowska Magdalena, Nowicka Joanna, Wiśniewska Kamila, Żywicka Bogusława, Żywicka Bogusława, Rybak Zbigniew, Dobrzyński Maciej

Acta of Bioengineering and Biomechanics

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2020

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Vol. 22, no. 3

185--198

EN

Purpose: The present research aimed to determine whether and how the aluminium chloride – based materials affect the cell line of the bacterial line and fungi. Methods: Cytotoxicity of haemostatic astringents: Alustat (liquid), Alustat (gel), Alustat (foam), Alustin, Hemostat, Racestyptine and Traxodent containing AlCl3 was conducted on L929 cell line with the use of MTT and SRB assays. The antimicrobial activity (CFU and MIC) against C. albicans, S. mutans, L. rhamnosus was determined. Results: In the MTT results, cell viability for all agents were very low. In SRB, the lowest cytotoxicity was demonstrated for Hemostat and Alustat (foam), Traxodent and Racestyptine. Total reduction of the CFU of S. mutans was observed. Alustat (gel) and Alustat (liquid) completely inhibited the growth of C. albicans, S. mutans and L. rhamnosus. Conclusions: The viability of L929 cells obtained in the SRB assay is more reliable than that obtained in the MTT assay, in the case of gingival haemostatic agents.

19

Aktywność przeciwdrobnoustrojowa ekstraktów z robinii akacjowej (Robinia pseudoacacia L.) otrzymanych w warunkach nadkrytycznych

Grzegorczyk Agnieszka, Biernasiuk Anna, Iwan Magdalena, Korga Agnieszka, Rajtar Barbara, Świątek Łukasz, Józefczyk Aleksandra, Zgórka Grażyna, Tyśkiewicz Katarzyna, Polz-Dacewicz Małgorzata, Rój Edward, Malm Anna

Przemysł Chemiczny

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2019

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T. 98, nr 6

989-992

PL

Badano aktywność przeciwbakteryjną i przeciwgrzybiczą wyciągów otrzymanych metodą ekstrakcji ditlenkiem węgla w stanie nadkrytycznym z młodych pędów Robinia pseudoacacia L.uzyskanych z udziałem czystego CO₂ (ekstrakty CO₂) i z udziałem wody jako współrozpuszczalnika (ekstrakty CO₂+H₂O, 1% mas.). Oznaczano najmniejsze stężenie hamujące (MIC), najmniejsze stężenie bakteriobójcze (MBC) oraz najmniejsze stężenie grzybobójcze (MFC). Ekstrakty CO₂+H₂O wykazywały wyższą aktywność przeciwbakteryjną i przeciwgrzybiczą w porównaniu z ekstraktami CO₂. W przypadku wszystkich ekstraktów obserwowano działanie bakterio- i grzybobójcze (MBC/MIC oraz MFC/ MIC ≤ 4). Najwyższą aktywność ekstraktów CO₂+H₂O zaobserwowano wobec Staphylococcus aureus ATCC 29213 (MIC = 0,16–0,62 mg/mL). Ekstrakty CO₂+H₂O wykazywały wyższą całkowitą zawartość polifenoli w porównaniu z ekstraktami CO₂ (18,77–19,01 μg/100 g suchej masy vs 6,38–9,82 μg/100 g suchej masy). Ekstrakty CO₂+H₂O miały stosunkowo niską aktywność cytotoksyczną wobec ludzkich fibroblastów skóry linii BJ. Stężenie wpływające na żywotność 50% komórek (EC₅₀) wynosiło 0,279-0,374 mg/mL. Uzyskane wyniki wskazują na możliwość praktycznego zastosowania ekstraktów nadkrytycznych (CO₂+H₂O) w preparatach do użytku zewnętrznego aktywnych wobec S. aureus.

EN

Exts. from shreeded young shoots of black locust obtained under supercrit. conditions (300 bar, 40°C) by extn. with CO₂ or CO₂+H₂O (1% by mass), were used to det. their antibacterial activity against Staphylococcus aureus or Escherichia coli as well as their antifungal activity against Candida albicans or Candida glabrata. In addn., the polyphenol content in both types of exts. as well as their cytotoxicity to human skin fibroblasts were detd. Exts. with CO₂+H₂O showed a higher content of polyphenols, lower cytotoxicity as well as higher activity against Staphylococcus aureus than the CO₂ exts.

20

Cu(II), Co(II), Ni(II), Mn(II) and Zn(II) Schiff base complexes of 3-hydroxy-4-[N-(2-hydroxynaphthylidene)-amino]-naphthalene-1-sulfonic acid: Synthesis, Spectroscopic, thermal, and antimicrobial studies

Bakare Safyah B.

Polish Journal of Chemical Technology

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2019

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Vol. 21, nr 3

26--34

EN

Five divalent transition metals Cu(II), Co(II), Ni(II), Mn(II) and Zn(II) complexes have been synthesized using 3-hydroxy-4-[N-(2-hydroxynaphthylidene)-amino]-naphthalene-1-sulfonic acid (H3L) Schiff base as a ligand derived from the condensation reaction between 4-amino-3-hydroxynaphthalene-1-sulfonic acid and 2-hydroxy-1-naphthalde-hyde. The synthesized complexes were characterized using microanalytical, conductivity, FTIR, electronic, magnetic, ESR, thermal, and SEM studies. The microanalytical values revealed that the metal-to-ligand stoichiometry is 1:1 with molecular formula [M2+(NaL)(H2O)x].nH2O (where x = 3 for all metal ions except of Zn(II) equal x = 1; n = 4, 10, 7, 4, and 6 for Cu(II), Co(II), Ni(II), Mn(II) and Zn(II), respectively). The molar conductivity result indicates that all these complexes are neutral in nature with non-electrolytic behavior. Dependently on the magnetic, electronic, and ESR spectral data, octahedral geometry is proposed for all the complexes except to zinc(II) complex is tetrahedral. Thermal assignments of the synthesized complexes indicates the coordinated and lattice water molecules are present in the complexes. SEM micrographs of the synthesized complexes have a different surface morphologies. The antimicrobial activity data show that metal complexes are more potent than the parent ligand.