Production of Brachiaria mutica as natural dyes powder for textile application: characterisation study

Abstract

Innovation of synthetic dyes successfully eliminated the utilisation of natural materials as textile dyes. Simplicity as well as variety of colours strongly increased the application of synthetic dyes. Nevertheless, environmental concern has lately forced the use of natural dyes. To simplify the usage of natural dyes, production of natural dyes powder is inevitable. Investigation was carried out to examine the effects of solvent and filler types on the yield, chromaticity, flavonoid content, and water content of natural dyes powder. In this work, Brachiaria mutica was used as a sample source. It was crushed and grinded before extracted using mixture of methanol and water as solvents at various methanol concentration of 25%, 50%, 75%, and 100%. Extraction was carried out at a ratio of raw materials to solvent of 1:10. The filler of maltodextrine or gum arabic was added into dye extract before then converted into powder form by the aid of spray dryer. It was found that among the provided solvents, system using 50% methanol was considered to be optimal in resulting high yield as well as flavonoid content, while maltodextrine is chosen as providing better result than that of gum Arabic. Moreover, methanol concentration of 50% and 5% maltodextrine filler generated greyish yellow colour with the lowest water content of 0.9%.

Natural Dyes Utilization and Production Technology for Dye-Sensitized Solar Cell

“…Natural dyes in form of solid or powder generated stable and uniform color characteristics. In addition to textiles, good quality natural dyes powder is possible to be applied to solar cells as a medium for sunlight absorption [48]. ii.…”

The impact of different types of mordant on the eco-print dyeing using tingi (Ceriops tagal)

“…From which small amounts are mostly of plant origin [5,6]. Previous studies on the application of natural resources as colourant have been done [9][10][11].…”

“…General description of Ceriops tagal is a small tree or shrub up to 25 m in height. The bark is gray, sometimes brown, smooth and the base is bulging [9]. Having the scientific name Ceriops tagal, this plant is also known by several other names such as tengar, tingi, palun, parun, bido-bido, and others [12].…”

Textile natural dye powder of Terminalia catappa leaves

“…Utilisation of natural dyes in textile application have been studied by some researchers [6][7][8]. For textile application, the natural sources should be selected by considering the availability.…”