1, there are many kinds of plant dyes used in ancient times, such as direct dyeing, direct smearing or throwing them in for cooking; There is also mordant dyeing. The materials are cooked with mordant, usually metal ions.
2. In ancient China, most dyes used for dyeing were natural minerals or plant dyes, and plant dyes were the most commonly used in natural dyeing. Such as bark, roots, branches and leaves, fruits and shells; Flowers, flowers.
3. The dyes used for dyeing are mainly natural minerals or plant dyes, among which plant dyes are the most widely used. There are many kinds of plant dyes used in ancient times, which are classified according to chemical properties and dyeing methods, including direct dyes, basic dyes, mordant dyes and redox dyes.
4. For example, indigo is a commonly used blue dye; Madder and safflower are often used to make red dyes; Yellow dyes generally come from Sophora japonica, Curcuma longa, Gardenia and Cortex Phellodendri; Purple dye mainly comes from Arnebia euchroma in Xinjiang.
vegetable dye
1, and plant dyes refer to permanent and indelible colored substances from plants. This pigment is ubiquitous in plants, such as carotene and chlorophyll.
2. In flowers and fruits, bright colors can easily detect the existence of these pigments. However, there are some important plant dyes. Pigment may be some complex chemicals in bark, and it can only be revealed through the action of mordant.
3. Plant dyes are the mainstream of ancient dyeing technology in China. Pigments are extracted from flowers, grasses, trees, stems, leaves, fruits, seeds, skins and roots in nature as dyes. It is a handicraft technology that dyes fabrics with natural plant dyes through a series of processes such as extraction, liquid preparation and coloring, which is contrary to the concept of chemical dyeing.
4. According to color classification, red plant dyes include madder, safflower, hematoxylin and so on. Yellow plant dyes include gardenia, Sophora japonica and turmeric. Blue plant dyes include Polygonum blue, Isatis indigotica, Indigofera, Malayan blue and so on.