Natural Dyes - 11205 Words

Natural dyes are dyes or colorants derived from plants, invertebrates,a or minerals. The majority of natural dyes are vegetable dyes from plant sources – roots, berries, bark, leaves, and wood — and other organic sources such as fungi and lichens. Archaeologists have found evidence of textile dyeing dating back to the Neolithic period. In China, dyeing with plants, barks and insects has been traced back more than 5,000 years.[1] The essential process of dyeing changed little over time. Typically, the dye material is put in a pot of water and then the textiles to be dyed are added to the pot, which is heated and stirred until the color is transferred. Textile fiber may be dyed before spinning (dyed in the wool), but most textiles are†¦show more content†¦Dyeing wool cloth, 1482, from British Library Royal MS 15.E.iii, f. 269. The essential process of dyeing requires soaking the material containing the dye (the dyestuff) in water, adding the textile to be dyed to the resulting solution (the dyebath), and bringing the solution to a simmer for an extended period, often measured in days or even weeks, stirring occasionally until the color has evenly transferred to the textiles.[6] Some dyestuffs, such as indigo and lichens, will give good color when used alone; these dyes are called direct dyes or substantive dyes. The majority of plant dyes, however, also require the use of a mordant, a chemical used to fix the color in the textile fibers. These dyes are called adjective dyes. By using different mordants, dyers can often obtain a variety of colors and shades from the same dye. Fibers or cloth may be pretreated with mordants, or the mordant may be incorporated in the dyebath. In traditional dyeing, the common mordants are vinegar, tannin from oak bark, sumac, or oak galls, ammonia from stale urine, and wood-ashShow MoreRelatedScience Investigatory Project: Natural Dyes from Plants1763 Words   |  8 PagesI. Problem: Will natural dyes from plants effective in producing colored paste? II. Title: Using Natural Dyes form Plants In Producing Colored Paste III. Introduction: Our project is made from the raw materials such as starch, alum and annatto seeds. One of our reasons in making this project is it can help students save money because our product can be a substitute for glue. It doesn’t cost us too much time because we can make this in a short period of time. IV. Review of Related Literature:Read MoreDyes in Foods: Natural versus Synthetic868 Words   |  4 Pages Dyes in Foods Kool-Aid, strawberry ice cream, and Doritos: What do these things have in common? Whether you realize it or not, many ordinary foods contain dyes. Some of the dyes are natural; others are synthetic. Is one better than the other? According to the The Columbia Electronic Encyclopedia, a dye is a â€Å"synthetic or natural coloring used to color various materials.† Today, many dyes are used in foods all around the world. As of January 2014, the United States Food and Drug AdministrationRead MoreNatural Dyes from Plants in Producing Colored Paste1571 Words   |  7 PagesNatural Dyes from Plants in Producing Colored Paste Abstract:   Paste is a type of glue made from starch or dextrin, a starch product. This investigatory project shows that we can produce our own colored paste without spending much time and money and by performing simple steps. That’s why this Science Investigatory Project can help students save their money instead of spending it in buying expensive and commercialized colored glue. In addition, this colored paste can be an additional source ofRead MoreStrategic Management of Tenfold Organic Textile3710 Words   |  15 Pagesa company that provides naturally dyed organic cotton products to consumers, manufacturers and retailers. Tenfold attracts its customers by being an environmentally responsible organization that produce apparel using eco-friendly and chemical-free dye. The purpose of this report it to analyze the strengths, weakness, opportunities and threats of Tenfold in order to address the main issues that the company can improve. Furthermore, using academic journals, two alternati ve strategies will be discussedRead MoreSynthetic Food Dyes By Jackie Plum3216 Words   |  13 Pages Synthetic Food Dyes Jackie Plum Devry Universityâ€Æ' When my now six-year-old son was three, he was very hyperactive. He could not sit still and was always very emotional. Often, it would take a lot of effort to get him to do anything he was told. There were several times where he needed to be physically restrained in order to get him to calm down. After a few episodes at his preschool, one of the administrators suggested that we monitor his diet and remove synthetic food dyes from it. After 3 daysRead MoreConcerns On Toxicity Of Food Dyes1576 Words   |  7 PagesConcerns on Toxicity of Food Dyes Abstract Food dyes have been a growing topic in the United States ever since the 1970s since they are used in many of our foods in order to make certain foods more appealing to our senses. In the United States, most artificial/synthetic food dyes are currently legal. Not all scientists agree on the adverse effects that these food dyes can possibly display. Due to recent studies, the British government has already banned food dyes in their country by the year 2009Read MoreDyeing Studies of Wool Fibers with Madder 2011 Words   |  8 Pagessamples were higher than the unmordanted one. Key words: wool, madder, mordant, fastness properties, natural dye. Introduction: The use of natural dyes for dyeing, painting and using as cosmetics dates back to millennia [1]. During a few last decades, revival and application of natural dyes has achieved a great deal of attention [2-5]. Shahid et al. has reported advanced applications of natural dyes during the past fifteen years [6]. Introduction of new and luxurious products, protection of the environmentRead MoreFeasibility of the Extract from Sibukaw (Caesalpinia Sappan) Wood as Textile Dye7093 Words   |  29 Pagessappan) WOOD AS TEXTILE DYE PRESENTED IN THE SCIENCE AND TECHNOLOGY DEPARTMENT (SCIENCE CURRICULUM) ILIGAN CITY NATIONAL HIGH SCHOOL ILIGAN CITY SUBMITTED TO: MRS. ANNALLEE Q. ARON RESEARCH TEACHER SUBMITTED BY: Ibrahim, Mahalia Taskeen R. Cabugatan, Fahad M. Lomansoc, Jake G. Miano, Ryan I. Surmion, Paul Jeffrey S. ABSTRACT Dyes known to the ancients came from plants such as indigo and madder or from the shells of mollusks; today most dyes are made from coal tarRead MoreHealth Risks Associated With The Additives1864 Words   |  8 Pagesartificial coloring. How can we find a solution to a problem, if most of us are UN aware that a problem exists? First, we must find out what is in artificial colors. Artificial color, food color, and synthetic color are the most common names of dye. Synthetic color is made from Petroleum, a liquid mixture of hydro carbons. When extracted and refined it is used to produce fuels like gasoline, kerosene, and oil. In the 1900’s synthetic colors were derived from aniline, a petroleum product thatRead MoreNatural and Synthetic Materials2539 Words   |  11 PagesTextiles are made up from natural or man-made fibres or a combination of both. â€Å"Fibres are thin, hair-like structures† (Blair, n.d: online) that are categorized into two types: long filament fibres and short staple fibres. Natural fibres are usually staple, whilst man-made fibres are filament, with the exception of silk that comes from a natural source. These raw fibres are spun to produce a long, continuous thread referred to as yarn, which is then used in a series of methods that include, stitching