Dyeing of doyo fiber (Curculigo latifolia) using teak leaf extract (Tectona grandis) as a natural coloring material

Abstract

The Dayak Benuaq tribe uses natural dyes to give color to the Ulap Doyo woven fabric made from an endemic plant, namely Doyo (Curculigo latifolia). The purpose of this study was to carry out the extraction process and identify the phytochemical compounds in teak leaves, to carry out the fixation process on doyo fiber that had been treated with mordant, to measure the color fastness on doyo fiber. The extraction process uses the decoction method with 1 L distilled water as a solvent. Phytochemical testing using a UV-Vis Spectrophotometer. Brightness and color discoloration were measured using the Colorimeter WR10 FRU. The test results show teak leaves have the potential as a red natural dye on doyo fiber. The phenol content contained in the teak leaf extract solution was 29.46 GAE/mg extract. Then the flavonoid content contained was 3.74 µg CE/mg extract. Furthermore, the anthocyanin content contained was 0.181 mg/g extract. lime (CaCO3) mordant is to maintain the original color, the alum (Al2(SO4)3) mordant is to increase the brightness of the colors, and the tunjung (FeSO4) mordant is to give a dark color to the doyo fibers. Color fastness with dye heat testing (40°C) showed color direction values is good/4.