Immobilized tannin - Names and Identifiers
Immobilized tannin - Physico-chemical Properties
| Physical and Chemical Properties | Insoluble in water and ethanol. It has strong affinity for protein and heavy metal ions. |
Immobilized tannin - Introduction
Solidified tannin is a kind of natural organic matter containing multiple phenolic hydroxyl groups, which mainly exists in plants, such as leather, coffee beans, grapes, tea and so on. The following is an introduction to the properties, uses, preparation and safety information of cured tannins:
Nature:
1. Solidified tannin with polyphenol hydroxyl structure, can form a complex with metal ions.
2. It is acidic in solution or aqueous environment and can be neutralized with alkali.
3. Solidified tannin has good antioxidant properties, can prevent the oxidation of food or drugs.
Use:
1. In the food industry, solidified tannins can be used as food preservatives, antioxidants and pigment fixatives.
2. In the cosmetics industry, solidified tannins can be used as ingredients in skin care products with moisturizing, antioxidant and anti-inflammatory effects.
3. In the leather industry, solidified tannin is an important raw material for leather tanning.
4. In the field of agriculture, solidified tannin can be used as a fertilizer additive to improve the growth and resistance of plants.
Preparation Method:
The preparation of solidified tannins mainly includes two methods: Extraction and synthesis.
1. Extraction method: natural solidified tannins are obtained by extracting from fresh leaves, fruits or roots of plants.
2. Synthesis method: synthesis by chemical reaction, commonly used methods include phenolic resin synthesis and esterification reaction.
Safety Information:
1. Curing tannins are generally considered to be relatively safe substances, in the appropriate amount will not cause obvious harm to the human body.
However, excessive intake or long-term exposure may cause some side effects, such as gastrointestinal discomfort, allergic reactions or indigestion.
3. For people with allergies or related diseases, it is recommended to consult a doctor before using solidified tannins.
4. When using solidified tannins, you should follow the correct method of use and appropriate use to avoid excessive intake or contact.
Last Update：2024-04-09 15:17:35