Seher PERİNCEK, Ayşegül KÖRLÜ EKMEKÇİ, Kerim DURAN, M. İbrahim BAHTİYARİ

Usage of laccase ın denım washıng

Denim, çözgüsü genellikle indigo boyalı dimi kumaştır. Rahatlığı, günümüzün estetik ve moda anlayışına uygun farklılıklar kazandırılabilmesi nedeniyle son zamanlarda çok popular olmuştur. Denim ürüne estetik ve farklı görünümler, çeşitli zararlı kimyasalların kullanıldığı yıkama teknikleriyle kazandırılmaktadır. Günümüzde çevre kirliliği ile ilgili endişeler nedeniyle, enzimler konvansiyonel tekstil terbiye proseslerinde kullanılan kimyasallara alternatif olmuştur. Tekstil terbiye işlemlerinde kullanılan enzimler arasında lakkaz, yeni ve kullanımı sınırlı olan bir enzimdir. Bu çalışmada, lakkazın denim yıkamada kullanım olanakları araştırılmıştır. Yapılan denemeler sonucunda; enzimle işlem süresinin denim giysinin daha yüksek L* değerleri için önemli bir etkisi olduğu görülmüştür. Fakat artan işlem süresiyle belirgin şekilde geri boyama sorunu ortaya çıkmıştır. pH ve enzim konsantrasyonunun etkisinin sınırlı olduğu belirlenmiştir.

Denim yıkamada lakkaz kullanımı

Denim is a twill fabric in which only the warp yarn is dyed with indigo dye. Denim fabrics are very popular in this century because they have high stability form and ensure different opportunities for novel esthetic and fashional effects and very comfortable. This can be ensured with different washing techniques generally consisting hazardous chemicals. Today because of environmental aspects and conscious, enzymes became an alternative to conventional processes in textile finishing. Among the enzymes used in textile treatment processes laccases are relatively new and usability is limited. In this study, it was aimed to investigate the use of laccase in denim washing. It was observed that especially enzymatic treatment duration has of great importance for the higher L* values of the denim garments. But with the increase in duration the back-staining was come out evidently. pH and Enzyme concentration has also effects on the obtained results but they were limited

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1-Tortora P. G., Merkel R. S., 2010, Fairchilds Dictionary of Textiles, Fairchild Publications, New York, p:168.
2-Özdemir D., Duran K., Bahtiyari M. I., Perincek S., Körlü A. E., 2008, Ozone bleaching of denim fabrics, AATCC Review, Vol. 8(9), p:40-44
3-Rouette H.-K., Fischer-Bobsien C. H., Lindner A, Schwager B., 1995, Lexikon für Textilveredlung, Lauman-Ferlag, Dülmen, p:373.
4-http://www.novozymes.com/en/about-us/brochures/documents/enzymes_at_work.pdf (19/03/2013)
5-Cristóvão R. O., Silvério S. C., Tavares A. P. M., Brígida A. I. S., Loureiro J. M., Boaventura R. A. R ., Macedo E. A., Coelho M. A. Z., 2012, Green coconut fiber: a novel carrier for the immobilization of commercial laccase by covalent attachment for textile dyes decolourization, World J. Microbiol Biotechnol., No:28, p:28272838
6-Polak J., Jarosz-Wilkolazka A., 2012, Fungal laccases as green catalysts for dye synthesis, Process Biochemistry, 47, p:12951307
7-Mojsov K., 2012, Enzyme applications in textile preparatory process: a review, IJMIE, 2(9), p:272-295
8-Araujo R., Casal M., Cavaco-Paulo A., 2008, Application of enzymes for textile fibres processing, Biocatalysis and Biotransformation, 26(5), p:332-349
9-Couto S. R., Herrera J. L. T., 2006, Industrial and biotechnological applications of laccases: A review, Biotechnology Advances, 24, p:500513
10- Cavaco-Paulo A., Gübitz G. M., 2003, Catalysis and processing, Textile processing with enzymes, Woodhead Publishing Limited, Cambridge, p:99 and 114
11- Tarhan M., Sariisik M., 2009, A Comparison Among Performance Characteristics of Various Denim Fading Processes, Textile Research Journal, 79,p:301-309
12- Pazarlıoğlu N. K., Sarıışık M., Telefoncu, A., 2005, Laccase: production by Trametes versicolor and application to denim washing, Process Biochemistry, 40, p:16731678
13- Sheper T., Ulber R., Sell D., 2007, Industrial Enzymes, White Biotechnology, Springer-Verlag, Berlin, p:80
14- Tzanov T., Andreaus J., Guebitz G., Cavaco-Paulo A., 2003, Protein interactions in enzymatic processes in textiles, Electronic Journal of Biotechnology,Vol.6 (3), 146-154
15- W. Kenealy, G. Buschle-Diller, X. Ren, 2006, Enzymatic modification of fibers for textile and forest products industries, Modified Fibers with Medical and Specialty Applications, Springer, The Netherlands., p:195196.
16- Shirish K. G. V. N., 2007, Scope of biotechnology in textiles, Journal of the Textile Association, March-April, p:263-266
17- Montgomery DC, 2001, Response Surface Methods and Other Approaches to Process Optimization, Design and Analysis of Experiments, John Wiley & Sons. Inc, New York, p:459