Cis-isolimonenol is a natural compound that is predominantly found in the essential oils of various citrus fruits, particularly oranges and lemons. It is a significant component of d-limonene, which is a major constituent of these essential oils. The cis-isomer of limonene, Cis-isolimonenol, is of particular interest due to its unique physical properties and potential applications in various industries, including food, fragrance, and pharmaceuticals. SACH BIOTECH will provide a detailed examination of the physical properties of natural compound Cis-isolimonenol, shedding light on its characteristics and relevance in today's market.
Molecular Structure and Isomerism
Cis-isolimonenol is a monocyclic terpene with the molecular formula C10H16O. It is one of the stereoisomers of limonene, with the other being trans-isomer. The difference between these two isomers lies in the relative positions of the methyl groups on the second and fourth carbon atoms of the molecule. In cis-islimonenol, these groups are on the same side of the ring, whereas in trans-isomer, they are on opposite sides. This subtle difference in molecular structure leads to distinct physical properties for each isomer.
Physical Properties
1. Appearance and State: Pure Cis-isolimonenol is a colorless, viscous liquid at room temperature. It has a strong citrus-like aroma, which is characteristic of many terpenes.
2. Boiling Point: The boiling point of Cis-isolimonenol is approximately 1216.9±40.0 °C at 760 mmHg. This difference can be attributed to the molecular structure, as the cis-configuration results in a more compact shape, leading to stronger intermolecular forces and a slightly higher boiling point.
3. Melting Point: The melting point of Cis-isolimonenol is not well-defined due to its ability to form a glassy state upon cooling. However, it is known to solidify at low temperatures, with reports ranging from -74°C to -87°C (-103°F to -124°F).
4. Density: The density of Cis-isolimonenol is approximately 0.9±0.1 g/cm3.
5. Solubility: Cis-isolimonenol is poorly soluble in water due to its nonpolar nature. However, it is highly soluble in organic solvents such as ethanol, diethyl ether, and chloroform. This solubility profile makes it suitable for use in various formulations, including fragrances and flavorings.
6. Vapor Pressure: The vapor pressure of Cis-isolimonenol is relatively low, which contributes to its lower volatility compared to some other terpenes. This property is beneficial in applications where a long-lasting aroma is desired, as the compound will not evaporate quickly.
7. Optical Properties: As a chiral molecule, Cis-isolimonenol can exist in different enantiomeric forms. These enantiomers can interact differently with plane-polarized light, leading to optical activity. The specific rotation of Cis-isolimonenol can be used as a characteristic property to distinguish it from other isomers and to assess the purity of a sample.
Applications
1. Flavor and Fragrance Industry: The distinctive citrus aroma of Cis-isolimonenol makes it a valuable ingredient in the flavor and fragrance industry. It is used to impart a natural, fresh scent to a wide range of products, including cosmetics, cleaning products, and food products.
2. Pharmaceuticals: Research has shown that Cis-isolimonenol has potential therapeutic applications, particularly as an anti-cancer agent. Its ability to disrupt cancer cell membranes and induce apoptosis has been studied, and it is currently being investigated for its potential use in cancer treatment.
3. Food Industry: In the food industry, Cis-isolimonenol is used as a flavoring agent to add a citrus taste and aroma to various food products. It is also used in the production of natural food colorants, as it can contribute to the yellow coloration of certain foods.
4. Cosmetics and Personal Care: The pleasant scent and low toxicity of Cis-isolimonenol make it a popular ingredient in cosmetics and personal care products, such as lotions, perfumes, and hair care products.
Safety and Environmental Considerations
Cis-isolimonenol is generally recognized as safe (GRAS) for its intended uses in food, flavoring, and fragrance applications. However, it is essential to adhere to the recommended usage levels to minimize the risk of allergic reactions or skin irritation. Additionally, its environmental impact should be considered, as it may be harmful to aquatic life if released into water bodies. Proper disposal and handling procedures should be followed to mitigate these risks.
Conclusion
Cis-isolimonenol is a natural compound with unique physical properties that make it a valuable component in various industries. Its distinctive citrus aroma, low solubility in water, and potential therapeutic applications contribute to its widespread use and ongoing research. Understanding the physical properties of Cis-isolimonenol is crucial for its effective utilization and development of new applications. As the demand for natural and sustainable ingredients grows, the role of Cis-isolimonenol in the market is expected to expand, further highlighting the importance of studying and appreciating its properties.
This blog post has provided an in-depth look at the physical properties of Cis-isolimonenol, its applications, and safety considerations. By understanding these aspects, we can better appreciate the role this natural compound plays in our everyday lives and its potential for future development.
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