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Journal of Conservation Science Vol.32 No.3 pp.385-394

적색 염직물의 색소 추출 방법 및 분석연구

임세연,정용재

A Study on Extraction and Analysis of Red Dyed Fabric

Se Yeon Imn,Yong Jae Chung

Abstract

A fabric excavated from tombs or passed down is not easy to find its original color as it degrades and discolors by UV and visible rays, oxygen and microorganisms. LC-MS analysis is commonly used for separating and analyzing colors, but color extraction process is complicated and important in dye-qualitative analysis. To extract red colors from a fabric which is dyed with safflower and lac, solvents; hydrogen chloride, pyridine and oxalic acid are used and oxalic acid was the most effective solvent. Meanwhile, dyed samples were put in degradation condition; UV-A for 168 hours and analyzed with LC-MS to find out its colors’chemical changes. As a result, carthamin is detected in TR 13 min and laccaic acid A is detected in TR 10 min. However carthamin is not detected in a degraded fabric dying with safflower, it could be identified as a safflower fabric by the molecular weight of m/z 931. Through this study the most optimal method for red color extraction is found so it is expected to be used as a base line data for red color LC-MS analysis.

Vol. 40 No. 4 (2022.12)

Journal of Conservation Science Journal Abbreviation J. Conserv. Sci.
Frequency Quarterly
Doi Prefix 10.12654
Publisher The Korean Society of Conservation Science for Cultural Heritage
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