Colourimetric analysis and antimicrobial study of natural dyes and dyed silk |
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| Authors: | AK Prusty Trupti Das A Nayak NB Das |
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| Institution: | 1. Key Laboratory of Science & Technology of Eco-Textiles, Ministry of Education, Jiangnan University, 1800 Lihu Road, Wuxi, Jiangsu 214122, China;2. Jiangsu Sunshine Group, Sunshine Industrial Park, Jiangyin, Jiangsu 214126, China;3. Department of Textiles, Merchandising & Fashion Design, University of Nebraska–Lincoln, 234 HECO Building, Lincoln, NE 68583-0802, United States;4. Department of Biological Systems Engineering, University of Nebraska–Lincoln, 234 HECO Building, Lincoln, NE 68583-0802, United States;1. Textile Engineering Department, Yazd University, Yazd, Iran;2. Deakin University, Institute for Frontier Materials, Geelong, Victoria, 3216, Australia;1. Department of Applied Chemistry, Govt. College University, Faisalabad, 38000 Pakistan;2. Department of Chemistry, Govt. College University, Faisalabad, 38000 Pakistan;3. Department of Chemistry, The University of Lahore, Lahore, Pakistan;1. Department of Chemistry, Government College University, Faisalabad 38000, Pakistan;2. Department of Applied Chemistry and Biochemistry, Government College University, Faisalabad 38000, Pakistan;3. Department of Botany, Government College University, Faisalabad 38000, Pakistan;1. PG & Research Department of Chemistry, Sri Paramakalyani College, Alwarkurichi, Tamilnadu, India;2. Department of Biotechnology, Mother Teresa Women’s University, Kodaikanal, Tamilnadu, India;3. J.P. College of Arts and Science, Tenkasi, Tamilnadu, India;4. Department of Chemistry, Karunya University, Coimbatore, Tamilnadu, India |
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| Abstract: | Colourimetric and antimicrobial activities of natural colourants and dyed silk have been studied. The colour strength (K/S) values were increased with increase in dye absorbance. The absorption of dyes on silk yarns was obtained from 10.56 to 39.48% at 5% concentration of dye from different plant extracts. The colourimetric parameters L1, a1, b1, C, and H were measured for depth of the colour. The dyed silk with natural colourants displayed excellent antimicrobial activity (reduction rate: 25–65%) against the bacteria Escherichia coli and (reduction rate: 3–68%) against the fungal strain Aspergillus niger. The dyed silk exhibited good and durable fastness properties. |
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