Terpinen-4-ol Liquid

What is Terpinen-4-ol？

Terpinen-4-ol is a naturally occurring monoterpene organic compound widely found in plant resources such as nutmeg, cardamom, rosemary, coriander, and tea tree oil. At room temperature, it is a colorless to pale yellow transparent oily liquid with a complex aroma of spiciness, earthiness, grassiness, and woodiness. Terpinen-4-ol effectively inhibits the release of inflammatory mediators from activated monocytes. With its unique aroma and natural properties, it is widely used in personal care, cosmetics, fragrances, and daily chemical products.

YTBIO supplies colorless, transparent terpinen-4-ol Liquid, offering products of different purities and specifications to meet diverse formulation application requirements.​​​​​​​

Biological Mechanism of Action

It is a natural monoterpene and the main bioactive component of tea tree oil. It belongs to the category of monoterpene alcohols in the alcohol family. It not only has the anti-pathogen effect of alcohol, but can also increase the content of immunoglobulins, stimulate white blood cells to resist germs, and enhance the response ability of the immune system; it also has mild antibacterial and antiviral effects. The entire process relies on Terpinen-4-ol activating human monocytes to inhibit the production of inflammatory mediators, significantly enhancing the efficacy of various chemotherapy and biological agents.

It is a botanical fungicide extracted from plants. Its mechanism of action is: affecting the permeability barrier of biological cell membrane structure, and capable of destroying cell membranes and cell walls. It has preventive and therapeutic effects at the same time, and has a bactericidal effect at different stages of the disease: in the spore germination stage, it can effectively inhibit spore germination, thereby preventing the spread of the disease; in the mycelium growth and diffusion stage, it can inhibit (living and in vitro) mycelium The growth and spread; sporangia growth stage: can inhibit the formation of fungal spores, thereby preventing it from causing infection on new plant tissues.

Main Efficacy

Anti-inflammatory

Terpinen-4-ol can inhibit the overexpression of TNF, IL-1, IL-8, and prostaglandin E2, reducing inflammatory responses and exerting an anti-inflammatory effect.

Antibacterial

Terpinen-4-ol alcohols have good antibacterial effects against fungi that cause reproductive system problems, such as Candida albicans. They are active against strains resistant to mupirocin, fusidic acid, vancomycin, methicillin, and linezolid, and exhibit good anti-staphylococcal activity against numerous Staphylococcus aureus isolates.

Antioxidant Potential

As natural terpene alcohol compounds, they have value in free radical regulation.

Fragrance

They possess a unique, fresh aroma and can be used as fragrance ingredients in daily chemical products.

Antibacterial Experiments of 4-Terpinen-4-ol

A study using *Escherichia coli* as a model bacterium evaluated the antibacterial activity and mechanism of action of Terpinen-4-ol Liquid. Methods employed included minimum inhibitory concentration (MIC), bacterial growth curves, scanning electron microscopy, and analysis of cell membrane permeability and DNA effects.

The experiments showed that Terpinen-4-ol effectively inhibited the growth of *E. coli*, and its antibacterial effect was concentration-dependent. After treatment, bacterial cells exhibited swelling, deformation, and surface damage, while increased cell membrane permeability led to leakage of intracellular substances such as proteins and nucleic acids. However, the study found that Terpinen-4-ol did not directly bind to bacterial DNA.

Therefore, Terpinen-4-ol mainly exerts its antibacterial effect by disrupting the cell membrane structure of *E. coli*, increasing membrane permeability, and causing leakage of cell contents, providing a basis for its application in natural antibacterial agents and related products.

Source: ZHOU Lingling, WANG Yuhang, ZHANG Yuanchen, ZHANG Mingliang, LIAN Kaiqi. Study on Antimicrobial Effects of Terpinen-4-ol Against Escherichia coli[J]. China Animal Husbandry & Veterinary Medicine, 2025, 52(9): 4497-4504.

Application Areas

Cosmetics and Personal Care: Can be used in skincare and haircare products, or as an ingredient in natural fragrance formulations. It can also be used in cleaning products and freshening formulas.

Oral Care Products: Can be used in mouthwash, toothpaste, and oral care formulations.

Industrial Applications: Used as an antibacterial material for the preservation of fresh food.

Insecticides and Repellents: Used in the development of natural mosquito repellents and insecticides.

Synthesis

At present, the source of this compound is not only extracted from tea tree oil, but also synthesized by base-promoted 1,4-cineole rearrangement or acid-catalyzed limonene hydration. However, these synthetic processes based on corrosive, non-recyclable homogeneous reagents are non-selective and produce a large number of isomers, which makes the purification of active substances very complicated and more expensive. Therefore, researchers have conducted in-depth research and created a synthetic method with no isomers produced, only on solid catalysts such as alumina, nano-titanium dioxide and Pd/C, through selective epoxidation, isomerization of terpinolene epoxide and hydrogenation of allyl alcohol, with a yield of >60%. For the isomerization of terpinolene epoxide, the synthesis can be carried out in batch or flow mode.
 

Contact Us

YTBIO offers high-quality Terpinen-4-ol Liquid suitable for cosmetics, personal care, and essential oil products. Please contact us for product specifications, samples, and the latest quote.

Tel:86-029-86478251 / 86-029-86119593
Whatsapp:8617782577059
Email:sales@sxytorganic.com