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Methyl linolenate appears as a colorless or light yellow oily liquid at room temperature and pressure, with a certain degree of volatility, and can quickly evaporate into the air under certain conditions. Molecular formula C19H32O2, CAS 301-00-8, molecular weight 292.456 (or approximately 292.46), density of approximately 0.895g/cm ³ (measured at 25 ℃ and 4 ℃).
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Chemical Formula |
C19H32O2 |
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Exact Mass |
292.24 |
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Molecular Weight |
292.46 |
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m/z |
292.24 (100.0%), 293.24 (20.5%), 294.25 (2.0%) |
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Elemental Analysis |
C, 78.03; H, 11.03; O, 10.94 |
Insoluble in water, this property allows it to maintain a stable oily form when in contact with water. Can dissolve in various organic solvents such as ethanol, ether, chloroform, ethyl acetate, and methanol.
The selective solubility of these solvents enables them to be effectively separated and purified from other substances. Can form miscible systems with certain substances such as acetone.
This mutual solubility enables it to form co crystals with these substances during crystallization and purification processes, thereby further improving their purity.
At room temperature and pressure, it appears as a stable liquid, but under high temperature or pressure conditions, decomposition or polymerization reactions may occur. Therefore, appropriate measures need to be taken to protect its stability.
As an ester compound with multiple unsaturated double bonds, it has demonstrated extensive application value in various fields such as pharmaceuticals, organic chemicals, health products, cosmetics, and industry.
In the field of pharmaceuticals, it will be widely used as raw materials for new drugs and health products; In the field of cosmetics, it will provide consumers with a higher quality skincare experience; In the industrial field, it will provide strong support for the development of environmentally friendly products; In the field of scientific research, it will provide new ideas and methods for research in related fields.
Methyl linolenate, as an ester compound with multiple unsaturated double bonds, has shown wide application value in various fields due to its unique chemical structure and biological activity.
1. Raw materials for pharmaceutical production
It has significant application value in the field of pharmaceuticals. Due to its biological activities such as regulating blood lipids, anti thrombotic, and supporting prostaglandin synthesis, methyl linolenic acid is widely used in the treatment and prevention of cardiovascular diseases, inflammatory diseases, and other conditions.
In addition, it can also be used to prepare compounds with specific pharmacological effects, such as anti-tumor drugs, anti-inflammatory drugs, etc., providing strong support for the development of the pharmaceutical industry.
2. Raw materials for the production of health products
As a raw material for the production of health products, it has significant health benefits. It contains abundant polyunsaturated fatty acids, such as alpha linolenic acid, which have multiple benefits for human health.
It can regulate blood lipid levels, reduce cholesterol and triglyceride levels in the blood, thereby preventing the occurrence of cardiovascular diseases. In addition, it can enhance the human immune system, improve antioxidant capacity, and delay the aging process. Therefore, it is widely used in the field of health products, such as nutritional supplements, functional foods, etc.
3. Cosmetic additives
It also has a wide range of applications in the field of cosmetics. Due to its excellent permeability and moisturizing properties, it can quickly penetrate deep into the skin, providing sufficient moisture and nutrients, making the skin softer and smoother.
In addition, methyl linolenic acid also has antioxidant and anti-inflammatory effects, which can protect the skin from damage caused by free radicals and inflammation, thereby delaying the aging process of the skin. Therefore, methyl linolenic acid is widely used in cosmetics such as skincare and makeup products, providing consumers with a high-quality skincare experience.
4. Industrial applications
Methyl linolenate also has wide application value in the industrial field. It can be used as an industrial raw material for lubricants, plasticizers, surfactants, etc., to improve the performance and quality of products. For example, in plastic processing, it can be used as a plasticizer to improve the flexibility and processing performance of plastic products.
In the coating industry, it can be used as a surfactant to improve the dispersibility and stability of coatings. In addition, it can also be used to prepare environmentally friendly products such as inks and coatings, contributing to the sustainable development of the industrial sector.
5. Applications in the field of scientific research
It also has wide application value in the field of scientific research. It can be used as a research object for chemical and biological experiments, to explore its chemical properties, biological activity, and interaction mechanisms with other substances.
By delving into its properties and applications, strong support and guidance can be provided for research in related fields. For example, in the biomedical field, methyl linolenic acid can serve as a biomarker for drug screening and disease diagnosis; In the field of materials science, it can serve as a synthetic raw material and modifier for new materials.
6. Other applications
In addition to the application fields mentioned above, it can also be used to prepare other compounds and products with specific functions. For example, it can be used as a food additive to enhance the taste and nutritional value of food.
In the field of agriculture, it can be used as a plant growth regulator to promote plant growth and development; In the field of environmental protection, it can be used as a raw material for biodegradable materials to reduce environmental pollution.
Methyl linolenate is a compound with important biological activity, which can be efficiently extracted from specific algal plants. This extraction process is carefully designed to maximize the purity and yield of the product.
Firstly, the selected algae powder is used as raw material and mixed evenly with the entrainer methanol to form a homogeneous state. This step ensures that the active ingredients in the algae powder can be fully dissolved and dispersed in the solvent, laying a good foundation for subsequent supercritical extraction.
Next, use CO2 as the supercritical extraction solvent. Under specific pressure and temperature conditions, CO2 exhibits unique solubility and can effectively extract the total lipid components from algal powder. This supercritical extraction process not only improves extraction efficiency, but also reduces the use of organic solvents, making it environmentally friendly.
After extraction, the obtained total lipids are concentrated to remove excess solvents and impurities. Subsequently, the concentrated total lipids were dissolved in a methanol solution containing 5% chloroacetyl and subjected to esterification reaction. The purpose of this step is to convert the fatty acids in the total lipids into the corresponding fatty acid methyl esters for subsequent separation and purification.
After the esterification reaction is completed, all methyl ester molecules are separated by molecular distillation technology. Molecular distillation is an efficient separation method that can achieve precise separation based on the size and volatility differences of molecules. During the distillation process, the distillate is collected to obtain a mixture containing components such as methyl linolenic acid.
To further improve purity, the distillate was added to acetone and subjected to crystallization treatment at different temperatures (4 ℃, -10 ℃, -30 ℃). As the temperature decreases, different components gradually precipitate. By filtering to remove these precipitates, a purer solution of methyl linolenic acid is obtained.
Next, add the concentrated solution to urea and methanol, and perform reflux reaction under nitrogen protection. This step helps to further remove residual impurities and unreacted components. After the reaction is complete, cool and let it sit for a period of time, then filter off the crystals.
Then, in order to extract methyl linolenic acid from the solution, water was added and extracted with petroleum ether. Petroleum ether is an effective organic solvent that can selectively dissolve methyl linolenic acid. Recovering petroleum ether through distillation to obtain a mixture containing methyl linolenic acid.
Finally, the obtained mixture is subjected to fractional distillation under high vacuum conditions. Within the temperature range of 100-150 ℃, precise separation is carried out based on the boiling point differences of each component, resulting in high-purity pure methyl linolenic acid. This pure product has broad application prospects in the fields of food, health products, cosmetics, etc.
The application mechanism of methyl linolenic acid in the field of biodiesel is a complex and interesting topic, which involves multiple aspects such as chemical reaction kinetics, the composition and properties of biodiesel, and the unique chemical structure of methyl linolenic acid.
The role of biodiesel
The preparation of biodiesel is usually achieved through ester exchange reaction, which involves reacting fatty acids in vegetable oil or animal fat with alcohols such as methanol or ethanol to produce fatty acid methyl esters (i.e. biodiesel) and glycerol. During this process, methyl linolenic acid, as a type of fatty acid methyl ester, participated in the ester exchange reaction.
Ester exchange reaction rate
The ester exchange rate of methyl linolenic acid is relatively fast, mainly due to the double bonds in its structure. In the initial stage of the reaction, methyl linolenic acid can rapidly react with alcohols to generate the corresponding fatty acid methyl ester. This enables methyl linolenic acid to achieve a high conversion rate in a relatively short period of time during the preparation of biodiesel.
Thermal stability and decomposition
However, the thermal stability of methyl linolenic acid is relatively poor and it is prone to decomposition at high temperatures. This characteristic requires special attention in the preparation and storage process of biodiesel. If the temperature is too high or the reaction time is too long, methyl linolenic acid may decompose and produce adverse by-products, affecting the quality and performance of biodiesel.
Performance in biodiesel
Combustion Performance
Methyl linolenic acid, as a component of biodiesel, has excellent combustion performance. The heat generated by its combustion is high, and the pollutants produced during the combustion process are relatively small, which meets environmental protection requirements. This makes methyl linolenic acid an indispensable component in biodiesel.
Oxidative stability
Although the thermal stability of methyl linolenic acid is poor, its oxidation stability has been improved in biodiesel. Other components in biodiesel, such as saturated fatty acid methyl esters, can stabilize methyl linolenic acid and prevent its oxidative decomposition during storage and use.
Low temperature fluidity
The low-temperature flowability of methyl linolenic acid is relatively good, which allows biodiesel to maintain good flowability in low-temperature environments. This characteristic is of great significance for the application of biodiesel in cold regions.
The application mechanism of methyl linolenic acid in the field of whitening is a topic worth exploring, which involves knowledge from multiple disciplines such as biochemistry, skin physiology, and beauty science. The following is a detailed analysis of the application mechanism of methyl linolenic acid in the field of whitening.
The correlation between the chemical properties of methyl linolenic acid and skin physiology
Linolenic acid methyl ester is a type of polyunsaturated fatty acid methyl ester with a unique chemical structure and biological activity. The unsaturated double bonds in its molecule give it high reactivity and the ability to interact with various components in skin cells. In terms of skin physiology, methyl linolenic acid can interact with the lipid components of the skin cell membrane, affecting the fluidity and stability of the cell membrane, thereby regulating the metabolism and function of skin cells.
The whitening mechanism of methyl linolenic acid
Inhibit melanin production
One of the main mechanisms of action of methyl linolenic acid in the field of whitening is to inhibit the production of melanin. Melanin is the main component of skin pigments, and its production process is regulated by various enzymes, among which tyrosinase is one of the key enzymes. Methyl linolenic acid can inhibit the activity of tyrosinase by binding to it, thereby reducing the production of melanin. In addition, methyl linolenic acid can further enhance its whitening effect by regulating the metabolism of skin cells, reducing the synthesis and transport of melanin.
Promote skin metabolism
Methyl linolenic acid can also promote skin metabolism, accelerate skin cell renewal and repair. This helps to remove aging keratinocytes from the surface of the skin, reduce pigment deposition and accumulation, and make the skin more delicate, smooth, and elastic. At the same time, the acceleration of metabolism can also promote the absorption and utilization of nutrients by the skin, improving its self repair ability.
Application in Whitening Products
Based on the whitening mechanism of methyl linolenic acid, it has been widely used in whitening products. Currently, many whitening products have added methyl linolenic acid or its derivatives as active ingredients to enhance the whitening effect of the product. These products usually appear in the form of lotion, essence, facial mask, etc., and are suitable for different types of skin.
When using whitening products containing methyl linolenic acid, the following points should be noted:
Moderate use:
Excessive use may cause skin irritation or allergies.
Cooperate with sunscreen:
Whitening products usually need tobe used in conjunction with sunscreen products to avoid UV damage to the skin.
Continuous use:
Whitening is a long-term process that requires continuous use to achieve the desired effect.
The discovery of methyl linolenate was built on foundational research into linolenic acid. In 1887, Austrian chemist Karl Hazura first isolated an unsaturated fatty acid from linseed oil and named it linolenic acid. Constrained by the technological limitations of his era, he was unable to distinguish its isomers or conduct research related to methyl esterification, yet this work laid the material groundwork for the subsequent discovery of the product.
In 1909, German chemist Ernst Erdmann and his colleagues advanced further research, successfully isolating pure α-linolenic acid and identifying its chemical structure, which provided theoretical support for the methyl esterification of linolenic acid. In 1929, George and Mildred Burr confirmed that linolenic acid is an essential fatty acid for humans. In 1932, their team discovered through animal experiments that supplementation with it alleviated fatty acid deficiency in rats, marking the first verification of the biological activity of it.
During the 1930s to 1940s, scholars including Hume and Quackenbush conducted further studies, comparing the physiological effects of it and methyl linoleate, and clarifying its unique role in lipid metabolism. By the mid-20th century, related research had expanded into fields such as oxidative stability and biosynthesis, establishing it as an important model compound in lipid chemistry and nutritional science.
FAQ
What is methyl linolenate used for?
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Methyl linolenate, a polyunsaturated fattly acid (PUFA), is used in studies on the mechanisms and prevention of oxidation/peroxidation of unsaturated fatty acids. Methyl linolenate is being studied as a possible skin whitening agent with anti-melanogenesis activity.
What is methyl linoleate?
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Methyl linoleate is a fatty acid methyl ester of linoleic acid. It has been isolated from Neolitsea daibuensis. It has a role as a plant metabolite. It is functionally related to a linoleic acid.
What does methyl linoleate smell like?
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Odour Profile: Methyl Linoleate presents a subtle oily-fatty character with soft woody undertones that provides textural depth rather than distinct aromatic impact.
Is methyl linoleate a biodiesel?
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Methyl Linoleate is classified as a biodiesel due to its long methyl ester chain and is used as a fuel in standard diesel engines.
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