An Overview of Natural Dyes Extraction Techniques for Valuable Utilization on Textile Fabrics

Abstract

N ATURAL dyes are colours generated from natural sources. Many chemical processes using petrochemical-based dye intermediates are used in the creation of synthetic dyes, which use a lot of energy and release harmful toxic substances into the environment. So they have been substituted with natural ones that have many advantages, and despite these advantages, natural dyes have some serious disadvantages because of the technical and environmental challenges related to the production and use of natural dyes. To extract dye from its source, they must use a specialized process. The following are some ways of extracting natural colours from their sources: Aqueous extraction, Solvent extraction, Acid and alkali extraction, Supercritical fluid extraction, Ultrasound-assisted extraction, Enzyme assisted extraction. Many bioactive compounds are found naturally in plants. Plant-derived dyes such as red onion peel, Psidium guajava leaves, saffron flower, banana peel, and Ficus leaves are extensively used to colour textiles in the textile and fashion industries.

Various Printing Techniques of Cotton/Polyester Blended Fabrics to Enhancing its Performance Properties

“…[8][9][10][11][12][13] It is also the process of mixing a design concept, one or more colors, and a substrate (usually textiles) with a natural or synthetic thickener while applying a technique to correctly apply the colors. [14][15][16][17][18][19][20][21][22][23][24][25][26][27][28] The main objective of printing is to create colorful patterns with sharp borders on textile fabrics without any dye spilling beyond the design motif's borders. [29] Textile printing is defined as a regulated technique of coloring cloth in specific patterns or motifs by employing specialized printing techniques and machinery.…”

An Overview of Printing Textile Techniques

“…[8][9][10][11][12] It is also the process of mixing a design concept, one or more colours, and a substrate (usually textiles) with a natural or synthetic thickener, while applying a technique to correctly apply the colours. [4,[13][14][15][16][17][18][19][20][21][22][23][24][25][26] The main objective of printing is to create colourful patterns with sharp borders on textile fabrics without any dye spilling beyond the design motif's borders. [27] Textile printing is defined as a regulated technique of colouring cloth in specific patterns or motifs by employing specialized printing techniques and machinery.…”

Colour Properties of Infrared Bandicoot Berry (Leea Indica) Dyed Silk

“…This is supported by Adeel et al, [10], who reported that natural dyes have gained wide acceptance because they exhibit better biodegradability and more compatibility with the environment, which promotes sustainability in textiles. Additionally, Ragab et al, [11] also mentioned that natural dyes offer numerous medical benefits to the wearer as they are skin-friendly and generally non-hazardous to human health. However, Kumar [12], pointed out that natural dyes have drawbacks and inconsistencies in shades when applied alone without mordants.…”

“…However, Kumar [12], pointed out that natural dyes have drawbacks and inconsistencies in shades when applied alone without mordants. As a result, nearly all-natural dyes need the application of mordants to adhere to the textile substrate [11]. Mordants are used to obtain various shades of colours and achieve spectacular performance parameters on textile materials [13].…”