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Antimicrobial effect of lining leather fatliquored with the addition of essential oils

Bielak E., Syguła-Cholewińska J.

Biotechnology and Food Science

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2017

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Vol. 81, nr 2

149--157

EN

Footwear, especially those often and intensively used, provides an ideal environment for microbial growth. An appropriate high temperature and moisture content inside it enhance bacterial and fungal colonization by microbes. These microorganisms can be potentially pathogenic to human health and responsible for destruction of shoes materials from which the parts inside the shoe are made. In previous studies it has been shown that the addition of essential oils of antiseptic activity at leather finishing operations allows a leather to get antimicrobial properties. The aim of this paper is to assess the durability of antimicrobial effect of leather fatliquored with the addition of cinnamon, thyme and oregano essential oils at concentration of 5% per leather weight. Antimicrobial activity was evaluated according to guidelines of PN-EN ISO 20645:2006 “Textile fabrics – determination of antibacterial activity – Agar diffusion plate test” after 36-month storage. The obtained results have indicated that leathers under investigations show antimicrobial activity against E. coli, S. aureus and C. albicans strains even 3 years after fatliquoring. The use of natural bioactive substances such as cinnamon, thyme and oregano oils at concentration of 5% per leather weight in the leather finishing process may be an alternative to biocides used in the tanning industry as well it can improve hygienic properties of shoes, internal parts of which are made of such finished leathers.

2

New Method for the Antibacterial and Antifungal Modification of Silver Finished Textiles

Filipowska B., Rybicki E., Walawska A., Matyjas-Zgondek E.

Fibres & Textiles in Eastern Europe

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2011

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Vol. 19, no. 4 (87)

124--128

EN

In order to give antimicrobial properties to textiles, silver is more and more often used because of its wide spectrum of activity. Silver can be incorporated into textiles with the use of different methods: in the production process of chemical fibres or in the final product through its chemical modification. In this paper, a new method based on the precipitation of metallic silver on a textile surface as a result of the photochemical reaction of deposited compounds is shown. The results obtained for modified textiles using scanning electron microscopy (SEM), UV-Vis spectroscopy and Laser Induced Breakdown Spectroscopy (LIBS) confirmed the presence of metallic silver on the textile surface. The size of metallic silver particles precipitated on the product surface modified was determined using Dynamic Light Scattering (DLS). The results of microbiological tests (diffusion agar test) confirmed the effectiveness of the method elaborated with respect to microbiological resistance against a wide spectrum of bacteria and fungi. The simplicity of the method elaborated and the possibility of its application in textile plants equipped with a standard finishing device are emphasised.

PL

W celu nadania wyrobom włókienniczym właściwości antybakteryjnych i antygrzybicznych coraz częściej stosowane jest srebro ze względu na szerokie spektrum jego działania. Srebro może być wprowadzane do roztworu przędzalniczego w trakcie wytwarzania włókien chemicznych lub do produktu finalnego poprzez jego chemiczną modyfikację. Przedstawiono nową metodę polegającą na wytrącaniu metalicznego srebra na/w wyrobie włókienniczym w wyniku fotochemicznej reakcji naniesionych związków chemicznych. Obecność metalicznego srebra na powierzchni zmodyfikowanych wyrobów włókienniczych potwierdziły wyniki badań uzyskane za pomocą mikroskopii skaningowej (SEM), spektroskopii UV-Vis oraz spektroskopii emisyjnej wzbudzanej laserem (LIBS). Wielkości cząstek metalicznego srebra wytrąconego na/w zmodyfikowanym produkcie zostały określone metodą dynamicznego rozpraszania światła (DLS). Wyniki badań mikrobiologicznych (test dyfuzyjny na agarze) potwierdziły skuteczność opracowanej metody w zakresie odporności mikrobiologicznej na szerokie spektrum bakterii i grzybów. Podkreślono prostotę opracowanej metody oraz możliwość jej zastosowania z wykorzystaniem istniejącego w zakładach włókienniczych parku maszynowego.

3

Comparative investigations on the efficiency of different anchoring chemicals for the permanent finishing of cotton with chitosan

Sharaf S., Opwis K., Knittel D., Gutmann J. S.

Autex Research Journal

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2011

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Vol. 11, no. 2

71--77

EN

Comparative studies on the efficiency of anchor molecules for the finishing of cotton with chitosan are presented. Four different anchors were used: cyanuric chloride (CNC), butane-1,2,3,4-tetracarboxylic acid (BTCA), glycidyloxypropyltrimethoxysilane (GPTMS) and sodium hydroxydichlorotriazine (Na-HDCT). Two types of chitosan with different molecular weights were used. The type of anchor used for fixation of chitosan on cotton fabric had a distinct effect on the antimicrobial efficiency of chitosan. By using increasing the concentration of anchor chemicals, the ability of chitosan to inhibit the growth of bacteria increased. Using GPTMS as an anchor for chitosan improved the ion binding capacity for Cu2+-ions more than other anchors. The highest colour strength was achieved when using a low amount of anchors from the chlorotriazine system (up to K/S 3.3), whereas carboxylic or trialkoxysilane anchors at the same ratio of anchoring chemical to glucose units achieved comparatively low K/S values. The polyelectrolyte values of treated cotton fabric were also measured. SEM was used to investigate the surface morphology of the treated cotton fabric samples.