How is pigment made?
Pigments are important additives widely used in food, cosmetics, textile and other industries. They give products rich colors. In recent years, as people pay attention to health and environmental protection, the production process of natural pigments and synthetic pigments has become a hot topic. This article will introduce in detail the production method of pigments, and attach an analysis of hot topics in the past 10 days.
1. Classification of pigments
Pigments are mainly divided into two categories: natural pigments and synthetic pigments. Here's how they compare:
| Type | Source | Features |
|---|---|---|
| natural pigments | plants, animals, microorganisms | High security, but poor stability |
| synthetic pigments | chemical synthesis | Bright colors and strong stability, but may be harmful to human body |
2. How to make natural pigments
The production of natural pigments usually includes the following steps:
| steps | Description |
|---|---|
| Raw material selection | Choose plant or animal raw materials rich in pigments, such as carrots, purple potatoes, etc. |
| Extract | Extract pigments through solvents such as water and ethanol |
| Purification | Remove impurities and improve pigment purity |
| dry | Dry the extract into powder |
3. How to make synthetic pigments
The production of synthetic pigments is mainly through chemical synthesis. The common steps are as follows:
| steps | Description |
|---|---|
| Raw material preparation | Choose appropriate chemical raw materials, such as aniline, naphthol, etc. |
| reaction | Generate pigment intermediates through chemical reactions |
| Refined | Purify reaction products and remove by-products |
| Finished product | Drying and crushing to obtain the final product |
4. Hot topics and content in the past 10 days
The following are the hot topics and hot content about pigments on the Internet in the past 10 days:
| Date | hot topics | Hot content |
|---|---|---|
| 2023-11-01 | Market growth for natural pigments | As health awareness increases, the market demand for natural pigments surges |
| 2023-11-03 | Controversy over the safety of synthetic pigments | A certain brand was complained by consumers for using synthetic pigments |
| 2023-11-05 | Research and development of new pigments | Scientists successfully extracted new blue pigment from microorganisms |
| 2023-11-07 | Production of environmentally friendly pigments | A company launches a pigment production process with zero wastewater discharge |
| 2023-11-09 | Application of pigments in cosmetics | Natural pigments become the new favorite of high-end cosmetics |
5. Future trends in pigment production
With the development of science and technology, pigment production technology is also constantly innovating. In the future, natural pigments and environmentally friendly synthetic pigments will become mainstream. Here are possible future trends:
| Trend | Description |
|---|---|
| Popularity of natural pigments | Consumers are more inclined to choose natural and healthy products |
| Green synthesis technology | Reduce pollution during chemical synthesis |
| microbial pigments | Using microbial fermentation to produce pigments is low cost and environmentally friendly |
Conclusion
Pigments can be made in a variety of ways, from natural extraction to chemical synthesis, and each method has its own advantages and disadvantages. As people pay more attention to health and environmental protection, natural pigments and green synthesis technology will become the future development direction. I hope this article can help you better understand the pigment production process and its latest developments.
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