• Title/Summary/Keyword: antimicrobial and deodorizing properties

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Color Deepening and Antimicrobial Finish in the Dyeing of Cotton Fabrics using Rhus verniciflua Extract (옻 추출물을 이용한 면직물 염색에서의 농색화 및 항미생물성 가공)

  • Jang, Yong-Joon;Choi, Young-Hwan;Lee, Hye-Mi;Tak, Mi-So;Lyoo, Won-Seok;Jang, Jin-Ho
    • Textile Coloration and Finishing
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    • v.23 no.1
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    • pp.28-34
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    • 2011
  • Deep coloration of cotton fabrics with concentrated Rhus verniciflua extract was carried out using large amount of Glauber's salt and a mordant in order to improve dyeability and functional properties such as deodorizing and antimicrobial activity. With increasing in the salt addition upto 80% in the dyeing liquor containing 0.45% extract concentration, K/S value and exhaustion increased threefold from 1.2 to 3.5, indicating that the salt reduced the electrostatic repulsion between the dyes and the cotton fibers. Also the concentrated extract solution to 8% can increase the color build up upto a K/S of 11.1. In addition the combined pre- and post-mordanting methods with potassium alum enhanced the dyeability upto a K/S of 22.2. The ammonia deodorizing property increased with increased color yield of the dyed fabrics. Also the dyed and post-mordanted fabrics with 8% extract concentration showed antimicrobial activity against both Klebsiella pneumoniae and Staphylococcus aureus.

Changes in the Functional Properties of Spices and Herbs during Cooking (향신채의 조리중 기능성 변화)

  • Lee, Jeung-Hee;Kim, Mee-Ree
    • Korean journal of food and cookery science
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    • v.24 no.1
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    • pp.132-156
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    • 2008
  • The basic effects of herbs and spices when applied during cooking include flavoring, pungency, coloring, and deodorizing/masking effects. Besides these basic effects, herbs and spices have antioxidant, antimicrobial, pharmaceutical, and nutritional properties. This review briefly describes the flavor component characteristics as well as biological functions of herbs and spices during cooking and processing, with specific focus on garlic and Brassica vegetables.

Development of Antimicrobial and Deodorizing Cellulose Fiber (항균방취 셀룰로오스섬유 제조에 관한 연구)

  • 홍영근
    • Textile Coloration and Finishing
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    • v.10 no.1
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    • pp.38-42
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    • 1998
  • Both cellulose and chitin together were dissolved in DMAc/LiCl and these solutions were extruded into coagulant of $DMAc/H_2O$. Fibers thus obtained were treated in NaOH aqueous solution. Results showed that the fiber surface contains celluose and chitosan. This means that these fibers treated are composed of three components, ie, cellulose, chitin, and chitosan. These fiber showed secure antibacterial and mechanical properties.

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A study on the Functional Properties of Polyester Fiber Treated Titanium Dioxide Photocatalyst (이산화티타늄 광촉매를 처리한 Polyester 섬유의 기능성 연구)

  • Choi, Sei Young
    • Elastomers and Composites
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    • v.49 no.4
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    • pp.336-340
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    • 2014
  • The functionality such as deodorant, antibacterial, ultraviolet shielding of titanium dioxide self-actuated photocatalyst $Weltouch^{TM}$ treated polyester fiber was characterized in conditions without light. The deodorizing capacity was maintained more than 97% reduction irrespective of before washing and after 20 times repeated washing, and antimicrobial capacity was also retained more than 99.9% reduction. Titanium dioxide self-actuated photocatalyst was still maintained to the surface of polyester fiber without separation even after 20 times repeated washing. According to washing durability of polyester fiber, the reduction effect for ammonia was still retained even after 20 times repeated washing as much as before washing. The ultraviolet shielding capacity was still maintained at least 83% irrespective of before washing and 20 times repeated washing.

Effect of Mixed Dyeing Using Discarded Shiitake Mushroom Pin Extract - Focused on Dyeability and Functionality - (폐기되는 표고버섯 핀 추출물을 이용한 혼합염색 효과 - 염색성과 기능성을 중심으로 -)

  • Kyunghee Son
    • The Korean Fashion and Textile Research Journal
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    • v.26 no.4
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    • pp.411-423
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    • 2024
  • This study examined the dyeability and functionality of silk fabrics dyed using shiitake mushroom pins discarded in large quantities on mushroom farms. FT-IR and UV-Vis spectral analyses showed that polyphenols and flavonoids were present in the hot-water extract of shiitake mushroom pins. Optimal dyeing conditions for silk fabrics were a dye concentration of 50% (v/v), dyeing temperature of 80℃, dyeing time of 60 minutes, and dyebath pH of 5.3. The post-mordant method showed a greater effect on the increase in dye uptake and color change than the pre-mordant method. Unmordanted fabrics appeared as a YR Munsell color. Except for the Cu-mordant, all post-mordanted fabrics produced a Y Munsell color. The FE-SEM/EDX analysis confirmed that the natural iron solution and mud contained various metal ions. The Fe component was found to have the greatest effect on the dye uptake and color properties. The colorfastness of the unmordanted fabrics to washing, dry cleaning, rubbing, and perspiration was excellent (above grade 4), whereas light was grade 3-4. In the case of post-mordanted fabrics with a natural iron solution, the colorfastness to washing, wet rubbing, and light improved by 0.5 grades. For post-mordanted fabrics with mud, the colorfastness to light and sweat improved by 0.5 grades. The bacterial reduction rate for staphylococcus aureus in fabrics dyed with shiitake mushroom pin extract was excellent at over 99.9%, the bacterial reduction rate for klebsiella pneumoniae was 98.1%, and the deodorization rate was excellent at 90%. These results indicate that shiitake mushroom pins can be used as a sustainable, functional natural dye.