ABSTRACT:In this study, silk fabric is dyed with natural indigo. Dyed silk fabric with natural indigo was cut in the 20x20 cm 2 size. Excluding a fabric, all fabrics were mordanted in the same percentage with alum metal (KAl(SO 4 ) 2 .12H 2 O). Then, silk fabrics for green color dyeing are dyed separately with weld (Reseda luteola), gall oak (Quercus infectoria Olivier) and together weld (Reseda luteola) and gall oak (Quercus infectoria) in different percentage. Antimicrobial functionality of the twenty seven silk fabrics is established. Tests were conducted against the Staphylococcus aureus ATCC 6538. The results of the counting test showed more reduction of survival Staphylococcus aureus in dark-colored fabric. The number of survival microorganism was determined by counting the colonies as colony-forming unit (CFU/ml) and reduction rate of bacteria was calculated. Coloring compounds and their percentages in the natural dyed silk fabrics are detected by HPLC-PDA (high performance liquid chromatography with diode array detection). Colour measurement is done of the dyed silk fabrics by CIEL*a*b* spectrophotometer.Keywords: Antimicrobial testing, natural dyeing, Staphylococcus aureus, HPLC-PDA, colour measurement. BAZI DOĞAL BOYALAR KULLANILARAK BOYANMIŞ İPEK KUMAŞLARIN ANTİMİKROBİYAL AKTİVİTESİNİN BELİRLENMESİÖZET Bu çalışmada, ipek kumaş doğal indigo bitkisi ile boyanmıştır. Sonra 20x20 cm 2 boyutunda kesilmiştir. Bir kumaş hariç tüm kumaşlar aynı yüzdede şap (KAl(SO 4 ) 2 .12H 2 O) çözeltisi ile mordanlanmıştır. Yeşil renk boyama için kumaşlar önce ayrı ayrı muhabbet çiçeği (Reseda luteola) ve mazı gomalağı (Quercus infectoria Olivier) ile daha sonra iki bitki beraber farklı yüzdelerde kullanılarak boyama yapılmıştır. Antimikrobiyel test 27 adet ipek kumaş için uygulanmıştır. Testler Staphylococcus aureus ATCC 6538 e karşı yapılmıştır. Sayım sonuçları koyu renkli kumaşlarda S.aureus' un daha fazla azaldığını göstermiştir. Canlı mikroorganizma sayısı CFU/ml olarak koloni sayımı ile belirlenmiştir. Bakteri azalması tayin edilmiştir. Boyama yapılmış ipek kumaşlardaki renk bileşenleri ve onların yüzdeleri HPLC-PDA (yüksek performanslı sıvı kromatografisi) ile renk ölçümleri ise CIEL*a*b* spektorofotometresi yardımıyla belirlenmiştir.
Natural dyes are obtained from plants, insects, lichens, fungus and molluscs which have been used since ancient times. These dyes have antimicrobial, anticarcinogenic and antihelmintic properties. Walnut (Juglans regia L.), a species of Juglandaceae family, is grown in Turkey. Green walnut shell has also antimicrobial functions due to its juglone components known as one of the strongest antimicrobial chemical compound. In this study, alum-mordanted and unmordanted silk fabrics were dyed with green walnut shell. Concentration was varied at 50, 100, 150 and 200 % owf (weight of fabric), in order to assess antimicrobial properties of green walnut shell. Pathogenic strains of Staphylococcus aureus subsp. aureus (ATCC 29213) and Escherichia coli (ATCC 25922) were used to test for fabrics' antimicrobial activities. Reductions of bacterial growth were determined using AATCC test methods. All the fabrics which were dyed with green walnut shell indicated antimicrobial effect on both bacteria species. Antimicrobial effect was increased from 50 to 200 % owf (weight of fabric) dye concentration. These results indicated that unmordanted silk fabrics dyed with green walnut shell had antimicrobial effect as high as alum-mordanted silk fabrics dyed with green walnut shell and S.aureus were more sensitive than E.coli.
Özet: Melanoidin pigmenti alkol damıtma ve maya üretim fabrikalarından çıkan atıklara koyu kahverengi renk veren biyopolimer kompleksidir. Organik maddelerde amino ve karbonil grupları arasında oluşan maillard reaksiyonları sonucunda meydana gelir. Bu renkli maddeler zor parçalanır ve verdikleri rengin giderimi zordur. Bu çalışmada melanoidinin özellikleri, çeşitli mikroorganizmalar ve kimyasal maddelerle suya verdiği rengin giderilmesine yönelik çalışmalar özetlenmiştir.Anahtar kelimeler: Melanoidin, maillard reaksiyonları, renk giderimi.Abstract: Melanoidin pigment is a complex biopolymer that gives the dark brown color to waste waters from alcohol distillers and from yeast production plants. The color is generated through maillard reactions between the amino and carbonyl groups of the organic materials. Since these colored substances are persistent chemicals, they are hardly decolorized. In this review, the properties of melanoidin and its decolorization by various microorganisms and chemical substances are summarized.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.