Next Article in Journal
Liquid Crystalline π-Conjugated Copolymers Bearing a Pyrimidine Type Mesogenic Group
Next Article in Special Issue
A Method for Digital Color Analysis of Spalted Wood Using Scion Image Software
Previous Article in Journal
Mechanochemical Effects on the Synthesis of Copper Orthophosphate and cyclo-Tetraphosphate Bulks by the Hydrothermal Hot Pressing Method
Previous Article in Special Issue
Synthesis, Characterization, and Photovoltaic Properties of Soluble TiOPc Derivatives
Open AccessArticle

Colorimetric Assay and Antibacterial Activity of Cotton, Silk, and Wool Fabrics Dyed with Peony, Pomegranate, Clove, Coptis chinenis and Gallnut Extracts

1
Department of Organic Material Science and Engineering, Pusan National University, Busan 609-735, Korea
2
Korea Silk Research Institute, Jinju 660-904, Korea
*
Author to whom correspondence should be addressed.
Materials 2009, 2(1), 10-21; https://doi.org/10.3390/ma2010010
Received: 28 November 2008 / Revised: 14 January 2009 / Accepted: 15 January 2009 / Published: 15 January 2009
(This article belongs to the Special Issue Functional Colorants)
To investigate the antibacterial functionality of natural colorant extracts, five kinds of natural dying aqueous solutions were obtained by extraction from peony, pomegranate, clove, Coptis chinensis and gallnut using water at 90 °C for 90 min with a liquor ratio (solid natural colorant material/water, weight ratio) of 1:10. The colorimetric assay and antibacterial activity of cotton, silk, and wool fabrics dyed with these natural colorant extracts were examined. It was found that these properties were significantly dependent on the structure of colorant and the kind of fabrics. The hues (H) of all fabrics dyed with these natural colorants were in the range of 6.05YR -1.95Y. The order of value (V) was wool, silk and cotton. The chroma (C) of all samples was found to be at very low levels indicating the natural tone. All the fabrics dyed with the five natural colorants (peony, pomegranate, clove, Coptis chinensis and gallnut) extracts displayed excellent antibacterial activity (reduction rate: 96.8 - 99.9%) against Staphylococcus aureus. However, in the case of Klebsiella pneumoniae, the antibacterial activity was found to depend on the kind of natural colorant extract used. View Full-Text
Keywords: Antibacterial activity; Natural colorants; Colorimetric assay Antibacterial activity; Natural colorants; Colorimetric assay
Show Figures

Figure 1

MDPI and ACS Style

Lee, Y.-H.; Hwang, E.-K.; Kim, H.-D. Colorimetric Assay and Antibacterial Activity of Cotton, Silk, and Wool Fabrics Dyed with Peony, Pomegranate, Clove, Coptis chinenis and Gallnut Extracts. Materials 2009, 2, 10-21.

Show more citation formats Show less citations formats

Article Access Map by Country/Region

1
Only visits after 24 November 2015 are recorded.
Back to TopTop