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Ursolic acid powder is a pentacyclic triterpenoid compound naturally occurring in various plants, including fruits, leaves, and flowers. With a molecular formula of C30H48O3, it belongs to the class of organic compounds known for their diverse biological activities. This compound has been extensively studied for its potential health benefits and medicinal properties.
Ursolic acid is particularly abundant in certain plants such as rosemary, thyme, and apples, especially in their peels. It exhibits potent antioxidant and anti-inflammatory activities, making it a valuable component in natural remedies and dietary supplements. By scavenging free radicals and reducing oxidative stress, ursolic acid helps protect cells from damage and may contribute to the prevention of chronic diseases.
Furthermore, ursolic acid has shown promising results in weight management by regulating fat metabolism and increasing energy expenditure. It has been investigated for its potential to reduce body fat accumulation and improve insulin sensitivity. Additionally, ursolic acid displays anti-cancer properties by inhibiting the growth and proliferation of cancer cells, making it a subject of interest in cancer research.
However, despite its numerous benefits, the effectiveness and safety of ursolic acid in humans require further clinical studies to confirm. Currently, it is available as a dietary supplement, often promoted for its ability to support weight loss, enhance immune function, and promote overall health. Nevertheless, consumers should consult healthcare professionals before incorporating ursolic acid into their daily routines, as appropriate dosages and potential interactions with other medications need to be considered.
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Chemical Formula |
C30H48O3 |
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Exact Mass |
456.36 |
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Molecular Weight |
456.71 |
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m/z |
456.36 (100.0%), 457.36 (32.4%), 458.37 (2.7%), 458.37 (2.4%) |
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Elemental Analysis |
C, 78.90; H, 10.59; O, 10.51 |
extraction sources
Ursolic acid is most commonly extracted from the leaves and fruits of certain plant species. One of the primary sources is the rosemary plant (Rosmarinus officinalis). Rosemary, known for its aromatic properties and culinary uses, contains substantial amounts of ursolic acid, making it a valuable extraction source. The extraction process typically involves using organic solvents such as ethanol or methanol to dissolve and separate ursolic acid from the plant material.
Another significant source is the privet plant (Ligustrum lucidum), which belongs to the Oleaceae family. Privet leaves are rich in ursolic acid and other bioactive compounds. The extraction method for privet leaves is similar to that of rosemary, involving solvent extraction followed by purification steps to isolate ursolic acid.
In addition, azalea (Rhododendron caprifolium) leaves have also been identified as a source of ursolic acid. Azaleas are ornamental plants with a high content of ursolic acid, making them a potential extraction source. However, the extraction efficiency from azaleas may vary depending on the species and growth conditions.
The extraction process itself requires careful handling to ensure the quality and purity of the final product. It involves selecting the appropriate plant material, preparing it for extraction, using the right solvent and conditions, and purifying the extract to remove impurities. The yield and purity of ursolic acid can be affected by factors such as plant species, growth environment, extraction method, and purification techniques.
In Medicine
Antitumor Effects
Ursolic acid has been identified as an effective compound for the prevention and treatment of cancer. It exhibits antitumor properties by inducing the phosphorylation of AMP-activated protein kinase α (AMPKα) and inhibiting the protein expression of DNA methyltransferase 1 (DNMT1) in a dose-dependent manner. Studies have shown that ursolic acid can effectively induce apoptosis in cancer cells, possibly through downregulating B-cell lymphoma 2 (Bcl-2), upregulating Bcl-2-associated X protein, and activating caspase-3 proteolysis. Furthermore, it has been found to significantly inhibit the invasive phenotype of certain cancer cells and reduce the expression of matrix metalloproteinase (MMP)-2.
Anti-inflammatory and Antioxidant Effects
Ursolic acid possesses anti-inflammatory and antioxidant properties, making it useful in the treatment of inflammatory conditions. It can reduce inflammation by inhibiting the expression and activity of inflammatory cytokines and mediators. Additionally, its antioxidant activity helps to scavenge free radicals and protect cells from oxidative damage.
Improvement of Metabolic Disorders
Ursolic acid has also shown potential in improving metabolic disorders such as diabetes and obesity. It can lower blood glucose levels and improve insulin sensitivity, making it a promising agent for the management of type 2 diabetes. Furthermore, it has been found to regulate lipid metabolism and reduce body weight gain.
Protection Against Lung Injury
In animal studies, ursolic acid has demonstrated protective effects against lung injury. It can improve survival rates and attenuate lung injury in septic rats, reducing inflammation, oxidative stress, and tissue damage. These findings suggest that ursolic acid may have therapeutic potential in the treatment of lung injuries and related conditions.
In Cosmetics
Due to its antioxidant and skin-whitening properties, ursolic acid powder is widely used in cosmetics. It can absorb ultraviolet rays and prevent pigmentation caused by ultraviolet radiation. By inhibiting the activity of tyrosinase, it can reduce melanin production and improve skin tone. Additionally, ursolic acid can enhance skin barrier function and promote skin rejuvenation by increasing the content of ceramides in human epidermal keratinocytes and collagen in epidermal fibroblasts.
Antioxidant Properties
Ursolic acid possesses significant antioxidant capabilities, which help neutralize free radicals and protect skin cells from oxidative stress. This is crucial in delaying skin aging, enhancing skin elasticity, and maintaining skin health.
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Skin Conditioning
In cosmetics, Ursolic acid acts as a skin conditioner. It can relax muscles, alleviate skin tension, and stimulate the synthesis of collagen in the dermis, thereby promoting skin vitality, moisturizing, and improving skin texture.
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Anti-inflammatory and Antibacterial Effects
Ursolic acid's anti-inflammatory and antibacterial properties make it an ideal ingredient for skin care products targeting acne and sensitive skin. It helps reduce skin inflammation, prevent the proliferation of bacteria, and alleviate skin discomfort.
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Application in Hair Care Products
Ursolic acid can also be used in hair care products. When combined with shampoo, it can regulate the scalp and inhibit dandruff formation, contributing to healthier hair and scalp.
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Other Benefits
In addition, Ursolic acid has a calming effect and can help reduce body temperature. When used in products like antiperspirants, it can effectively inhibit sweat secretion.
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Ursolic acid powder is a fine, white to off-white crystalline substance derived from natural plant sources, primarily belonging to the pentacyclic triterpenoid family. This compound has garnered significant attention in recent years due to its diverse range of potential health benefits and applications in various industries.
Chemically, it exhibits a unique molecular structure that contributes to its biological activities. It is known for its antioxidant, anti-inflammatory, and anti-tumor properties, making it a valuable addition to dietary supplements and cosmetic formulations. The antioxidant properties help neutralize free radicals, thus protecting cells from damage and promoting overall health. Its anti-inflammatory effects can alleviate symptoms associated with inflammation, while the anti-tumor properties suggest its potential use in cancer prevention and treatment.
In dietary supplements, it is often included to support weight management, enhance athletic performance, and improve overall metabolic health. It is believed to regulate blood sugar levels, reduce fat accumulation, and increase energy expenditure. These benefits make it a popular choice among fitness enthusiasts and individuals seeking to maintain a healthy lifestyle.
Moreover, it finds applications in the cosmetic industry due to its skin-friendly properties. It can help improve skin elasticity, reduce the appearance of wrinkles, and even out skin tone. By incorporating ursolic acid into skincare products, manufacturers can offer consumers a natural and effective way to maintain youthful and radiant skin.
It is important to follow the recommended dosage guidelines to ensure safety and efficacy. Excessive intake may lead to unwanted side effects, such as gastrointestinal discomfort or allergic reactions. Therefore, it is advisable to consult with a healthcare professional before incorporating it into your daily routine.
In summary, ursolic acid powder is a versatile and potent natural compound with a wide array of health benefits. Its antioxidant, anti-inflammatory, and anti-tumor properties make it a valuable ingredient in dietary supplements and cosmetic formulations. However, caution should be exercised when using this compound to avoid potential side effects.
Ursolic acid powder is a naturally occurring pentacyclic triterpenoid compound, widely present in plant materials such as apple peels, rosemary, basil, and loquat leaves. Its chemical formula is C₃₀H₄₈O₃, with a molecular weight of 456.70. It typically exists in the form of a white to off-white powder, with a melting point range of 285-303℃. Under standard atmospheric conditions (room temperature), it is chemically stable, but it needs to be protected from light to prevent degradation. The following analysis is conducted from the perspectives of safety and stability:
Safety Assessment
The current public literature lacks acute toxicity data for gallotannic acid (such as LD₅₀), but its natural sources (such as apple peels, rosemary) suggest its low toxicity. Studies have shown that gallotannic acid is widely used in medicine and cosmetics, such as as an antioxidant, anti-inflammatory agent, and candidate compound for anti-cancer drugs, and no serious toxic reactions have been reported. Moreover, it is used to prepare anti-inflammatory drugs and natural whitening cosmetic raw materials, further supporting its safety.
Although gallotannic acid is widely used in cosmetics, existing research has not clearly identified its skin, eye stimulation or respiratory system sensitization. It is recommended to wear protective equipment (such as gloves, goggles) when operating and avoid direct contact of powder with skin or inhalation.
Currently, there is no evidence that gallotannic acid has reproductive toxicity or carcinogenicity, but the impact of long-term exposure has not been fully evaluated. In scientific and industrial applications, it is recommended to follow standard laboratory safety regulations and limit high concentrations or long-term exposure.
The environmental impact data of gallotannic acid (such as ecological toxicity, bioaccumulation) is not yet complete, but as a natural compound, its environmental risk may be lower than synthetic chemical substances. Waste disposal should follow relevant regulations to avoid random discharge.
Stability Analysis
Physical Stability
Gallotannic acid powder is stable at room temperature, but it needs to be protected from light to prevent photodegradation. Its melting point range (285-303℃) indicates that structural changes may occur at high temperatures, so the storage temperature is recommended to be controlled at 2-8℃ or -20℃ (for long-term storage), to maintain its chemical integrity.
Chemical Stability
Oxidation risk: Gallotannic acid contains multiple hydroxyl and alkenes structures, which may be easily oxidized. Storage should be sealed to avoid contact with air or strong oxidants.
Solvent stability: Its solubility is high in diethylhexyl, pyridine, methanol, etc., but it is almost insoluble in water or petroleum ether. The stability of the dissolved solution is affected by temperature, for example, it can be stored for 1 month at -20℃, and up to 6 months at -80℃.
pH sensitivity: No significant pH sensitivity of gallotannic acid has been reported, but extreme pH conditions may affect its solubility or biological activity.
Reactivity and compatibility
Gallotannic acid has low reactivity under standard conditions, but there may be a dust explosion risk when the powder is dispersed finely (avoid open flames or static electricity).
Contact with strong oxidants (such as potassium permanganate, concentrated nitric acid) may trigger dangerous reactions, and storage and transportation should be away from such substances.
Application Suggestions and Safety Measures
Storage conditions
Powder: Store for a short term (2 years) at 4℃, and for a long term (3 years) at -20℃.
Solution: Depending on the type of solvent, choose to store at -20℃ or -80℃. Avoid repeated freezing and thawing.
Operating Specifications
Operate in a fume hood and wear protective equipment.
Avoid mixing with strong oxidants, strong acids, or strong bases.
Emergency Handling
Skin Contact: Immediately rinse with plenty of water. Seek medical attention if necessary.
Inhalation: Move to an area with fresh air and keep the airway clear.
Leakage Handling: Collect the powder and place it in a sealed container. Dispose as hazardous waste.
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