Limonene is a natural monoterpene compound with a chemical formula of C₁₀H₁₆, which is widely found in the peel of citrus fruits (such as lemons and oranges).
High volatility: It is an oily liquid at room temperature with a fresh citrus aroma.
Isomer forms: including D-limonene (dextrorotatory) and L-limonene (levorotatory), of which D-limonene is more common.
Biological activity: It has antioxidant, antibacterial, anti-inflammatory and other properties, and has significant potential in the fields of medicine and health care.
Application areas
1. Food industry
As a natural flavor and food additive, it is used in beverages, baked goods, etc. to replace synthetic flavors.
2. Daily chemical products
Used in cosmetics and detergents to provide natural aroma and play an antibacterial role.
3. Pharmaceutical field
Used in the development of pharmaceutical excipients, health products (such as antioxidant supplements) and local anti-inflammatory drugs.
4. Industrial solvents
As an environmentally friendly bio-based solvent, it replaces traditional petroleum-based solvents and is used in the electronic cleaning and coating industries.
5. Agriculture
As a plant protection agent, it is used to repel insects or promote crop growth.
Industrial chain
The limonene industry chain is divided into upstream raw material supply, midstream production and processing, and downstream application markets:
Upstream:
Citrus fruit planting and extraction technology (physical pressing, chemical synthesis) are key. China is one of the main citrus producing areas in the world, with sufficient raw material supply.
Midstream:
The production process includes two processes: natural extraction and chemical synthesis. In 2023, there will be more than 200 limonene production companies in China, mainly concentrated in East China and South China.
Downstream:
Covering multiple fields such as food, daily chemicals, and medicine, demand growth drives the expansion of the industry chain.