Natural dyes are dyes or colorants derived from plants, invertebrates, or minerals. The majority of natural dyes are vegetable dyes from plant sources. Dyeing is the process of imparting colors to a textile material. Different classes of dyes are used for different types of fiber and at different stages of the textile production process, from loose fibers through yarn and cloth to completed garments. There are technologies that manufacture the pigments for plastics, rubber and cosmetics. Therefore; dyes and pigments have a vast area of applications and have a huge demand in industry. Contrary to popular opinion, natural dyes are often neither safer nor more ecologically sound than synthetic dyes. They are less permanent, more difficult to apply, wash out more easily, and often involve the use of highly toxic mordant. Of course, the colour possibilities are far more limited; the color of any natural dye may be easily copied by mixing synthetic dyes, but many other colors are not easily obtained with natural dyes. However, some mordant are not very toxic, and the idea of natural dyestuffs is aesthetically pleasing. Applying natural dyes in your fabric production using enzymes will reduce your production cost and improve control. There are various kind of natural dyes; quinonoid dyes, cyanine dyes, azo dyes, biflvonyl dyes, omochromes, anthraquinone, coprosma gesus etc. The use of natural dyes in cloth making can be seen as a necessary luxury to trigger off a change in habits. Dyes which stand out for their beauty and ecological attributes would never be employed on just any material but on noble fabrics such as wool, silk, linen or cotton, made to last more than one season. Market value will benefit from consumer preferences for environmentally friendly products, which will support consumption of high performance dyes and organic pigments. This book basically deals with the use of carotenoids as food colours , bianthraquinones and related compounds, intermediate degradation products of biflavonyls, dyestuffs containing nuclear sulphonic and carboxylic acid groups, quinonoid dyes, cyanine dyes, optical whitening agents, natural dyes for food, stability of natural colourants in foods effect of additives, pyrimidine pigments, the total synthesis of the polyene pigments, red pigment from geniposidic acid and amino compound, effect of acid and amine on the formation of red pigment from geniposidic acid, effect of the substituted position of amino group and chain length of amino compound etc. Due to pollution problems in synthetic dyes and pigments industry, the whole world is shifting towards the manufacturing of natural dyes and pigments. The present book contains techniques of producing different natural dyes and pigments, which has huge demand in domestic as well as in foreign market. It is hoped that entrepreneurs, technocrats, existing units, institutional libraries will find this book very useful. 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This book is of the view that natural dyes have always been preferred by people because they are user-friendly, eco-friendly, and are harmless to health and environment. The book provides information about the different natural dyes, their uses and their methods of extraction to produce brilliant and deep shades of natural dyes similar to the synthetic ones in every way by using modern methods.

True Colors is about artists who create color from natural materials and about the historical importance and environmental sustainability of this practice. All new content in this revised edition features Heartwear, a collaborative of artists and fashion designers who have created and supported indigo-dyeing projects from Benin to Morocco to India and beyond. True Colors features deep conversations with twenty-eight artisans from every part of the globe who reveal their wisdom, traditions, and know-how--and suggest that we ignore what they know at our peril. Traditional approaches to making color offer sustainable options to a fashion system badly in need of them and memorable cultural narratives to a world hungry for beauty and spirituality.

"How did textile dyers manipulate the natural dyes at their disposal to obtain the colours we see on fabrics and tapestries in museum collections today? How did colour makers prepare the translucent lake pigments used by artists to give richness and volume to painted draperies and subtle modulations of colour and space in the depiction of landscape? Some of the technological factors the dyer or pigment maker could control very easily have a marked effect on the final colour: the mordant salt used on the textile fibre; the temperature at which the dye was extracted from the raw material or dyeing was carried out; the method of extracting the during pigment preparation. These factors were explored as part of a research activity within the European project CHARISMA (Cultural Heritage Advanced Research Infrastructures -- Synergy for a Multidisciplinary Approach to Conservation/Restoration), a Research Infrastructures project founded by the European Union 7th Framework Programme (2009-2014, grant agreement no. 228330). Recipes for dyeing and lake pigment making using natural dyes, based on those found in historical documentary sources, were designed to study the effects of these and other factors and used during two CHARISMA workshops held in 2011 -- one on making traditional lake pigments, the other on dyeing. This book brings together the recipes used during these very successful workshops with discussions of the historical recipes upon which they were based and is illustrated with photographs taken during the workshops. The most widely used European natural dyes are described briefly and a short account of the chemistry of dyeing and lake pigment is included. The book is aimed primarily at those who need easily modified and reproducible recipes for teaching or scientific work: conservators, scientists and teachers." -- Provided by publisher

This long-awaited guide serves as a tool to explain the general principles of natural dyeing, and to help dyers to become more accomplished at their craft through an increased understanding of the process. Photos of more than 450 samples demonstrate the results of actual dye tests, and detailed information covers every aspect of natural dyeing including theory, fibers, mordants, dyes, printing, organic indigo vats, finishing, and the evaluation of dye fastness. Special techniques of printing and discharging indigo are featured as well. The book is intended for dyers and printers who wish to more completely understand the "why" and the "how," while ensuring safe and sustainable practices. Written by a textile engineer and chemist (Boutrup) and a textile artist and practitioner (Ellis), its detailed and tested recipes for every process, including charts and comparisons, make it the ideal resource for dyers with all levels of experience.

"'Harvesting Color' presents the entire process of infusing your life with color--finding the right plants, harvesting them at the best time, transforming the crop into beautiful dye, and, finally, marring pigment to fiber. In this beautiful book, Rebecca Burgess showcases thre dozen common plants that yield striking hues. Citing fascinating botanical lore, she demystifies the process of recognizing each plant in the wild. For those you can grow yourself, she details when to sow the seed and how to nuture the plant. For all the plants, you'll learn the optimal time to harvest, as well as how to extract the best dyes" --Cover flap.

Handbook on Natural Pigments in Food and Beverages: Industrial Applications for Improving Color, Second Edition focuses on a color solution for a specific commodity, providing food scientists with a one-stop, comprehensive reference on how to improve the color of a particular food product. The book includes two new chapters that highlight the physical and biological fundamentals of color, as well as the specific use of curcumin and carthamin. Sections focus on specific industrial applications of natural colorants, with chapters covering the use of natural colorants in a variety of products. Other sections highlight technical formulation and potential health benefits of specific colorants. Various pigments which can be used to effectively color food and beverage commodities are presented with information on safety and testing throughout. Provides a fully revised and updated resource on current regulatory standards and legislation Includes new chapters on both emerging ingredients and the latest technologies Focuses on the use of natural food colorants by specific product category per chapter rather than one pigment class per chapter Contains a current and comprehensive overview of product-specific coloration approaches