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Vanillic acid,Also known as4-hydroxy-3-methoxybenzoic acid, appears as white odorless crystals or powder, easily soluble in ethanol, soluble in ether, and slightly soluble in water. It is a natural seasoning found in edible plants and fruits, and can also be made by oxidation of vanillin. It can sublime without decomposition, does not form a color with ferric chloride, and its salts are easily soluble in water. In chemical research, this substance has specific molecular properties such as molar refractive index, molar volume, and isotonic specific volume. And due to its unique seasoning properties, it may be used as a seasoning in the food industry. In addition, it also has biological activities such as anti-inflammatory and antibacterial properties, which make it have certain potential applications in the fields of medicine and health products. However, the specific application situation still needs to be determined based on the product formula and process requirements.
Additional information of chemical compound:
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Chemical Formula |
C8H8O4 |
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Exact Mass |
168.04 |
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Molecular Weight |
168.15 |
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m/z |
168.04 (100.0%), 169.05 (8.7%) |
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Elemental Analysis |
C, 57.14; H, 4.80; O, 38.06 |
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Melting point |
208-210℃(lit.) |
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Boiling point |
257.07℃(rough estimate) |
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Density |
1.3037 (rough estimate) |
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Storage conditions |
Store below +30℃. |
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Vanillic acid is an organic acid widely present in nature, with various biological activities and extensive application value. The following is a detailed explanation of its purpose:
Antioxidant activity: This substance has significant antioxidant activity, which can clear free radicals and protect cells from oxidative damage. This antioxidant activity makes it potentially valuable in the fields of health products and cosmetics.
Antibacterial activity: It has inhibitory effects on various bacteria and fungi, demonstrating broad-spectrum antibacterial activity. This antibacterial activity makes it widely applicable in fields such as food preservation, medicine, and pesticides.
Anti inflammatory activity: can inhibit inflammatory response, alleviate tissue damage and pain. This anti-inflammatory activity makes it potentially therapeutic in fields such as medicine and health products.
Antiviral activity: Studies have shown that it has inhibitory effects on certain viruses, such as influenza virus. This antiviral activity makes it potentially valuable for the development of antiviral drugs.
Anti cancer activity: It can inhibit the growth and spread of cancer cells through various pathways, demonstrating anti-cancer activity. This anti-cancer activity makes it have potential application prospects in cancer treatment and prevention.
This substance is widely used in the food industry as a natural seasoning. It can enhance the aroma, taste, and color of food and beverages, improve product quality and brand effect. It plays an important role in foods such as candy, chocolate, ice cream, beverages, and seasonings. In addition, vanillic acid also has a preservative effect, which can extend the shelf life of food. Due to its various biological activities such as antioxidant, antibacterial, anti-inflammatory, and anticancer, it has broad application prospects in the field of medicine. It can be used as a precursor or excipient for the preparation of drugs with specific pharmacological effects.
In addition, it can also be used as a health supplement ingredient to enhance human immunity, prevent diseases, and promote health. At the same time, it has good antioxidant and moisturizing properties, so it is widely used in the cosmetics industry. It can be added as an antioxidant to cosmetics to prevent the oxidation and deterioration of components such as oils and proteins in cosmetics. At the same time, it can also be used as a moisturizer to maintain skin moisture and elasticity.
This substance has inhibitory effects on various plant pathogens and can therefore be used as a pesticide ingredient for the prevention and control of plant diseases. Compared with traditional chemical pesticides, it has the advantages of low toxicity, high efficiency, and environmental protection, which is more in line with the development needs of modern agriculture. It can also be used to prepare chemical products such as spices, dyes, resins, etc. In addition, it is used as a biomarker in fields such as environmental monitoring and ecological toxicology research.
What are the safety assessments of this compound?
Vanillic acid, with the chemical formula C8H8O4 and a molecular weight of 168.15, is a medium strength organic acid widely found in nature, especially in vanilla extracts. As a phenolic acid, it has rich aroma and various biological activities, and is therefore widely used in various industries such as food, spices, medicine, and cosmetics. However, with its widespread application in various fields, the safety assessment of this substance has become particularly important. The following is the security assessment report for it:
Environmental impact
Pollution during the production process
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During its production process, pollutants such as wastewater, exhaust gas, and waste residue may be generated. If these pollutants are directly discharged into the environment without proper treatment, they may cause pollution to water bodies, atmosphere, and soil. Therefore, vanilla acid production enterprises should establish sound environmental protection facilities and management systems to ensure the standard discharge of pollutants.
Pollution during use
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Improper handling of vanillic acid during use may also cause environmental pollution. For example, in food processing, excessive addition or improper handling of the substance may lead to an increase in food waste, thereby causing a burden on the environment. Therefore, food manufacturers should strictly control its dosage and properly dispose of food waste.
Sustainability and biodegradability
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This substance, as a natural organic compound, has a certain degree of biodegradability. However, its biodegradation rate and degree may be affected by various factors, such as environmental temperature, humidity, microbial species, etc. Therefore, when assessing environmental impacts, factors such as sustainability and biodegradability should be fully considered.
Precautions for use
- Adhere to usage standards: When using, relevant usage standards and limit regulations should be strictly followed. For example, in the food industry, it should be ensured that the amount of the substance added meets food safety standards; In pharmaceutical applications, it should be ensured that the vanillic acid used meets relevant quality standards and safety requirements.
- Avoid direct contact: When handling and using, try to avoid direct contact with skin and eyes. If accidentally touched, rinse immediately with plenty of water and consult a doctor. In addition, appropriate protective clothing and gloves should be worn to reduce harm to the body.
- Storage precautions: It should be stored in a cool, dry, and well ventilated place, avoiding direct sunlight and high temperatures. Storage containers should be sealed and clearly labeled to prevent leakage and ingestion. In addition, the sealing and integrity of storage containers should be regularly checked to ensure the quality and safety of oxalic acid.
- Monitoring and testing: To ensure its safe use, it should be regularly monitored and tested. For example, in the food industry, the content of food should be regularly tested to ensure that it meets food safety standards; In pharmaceutical applications, regular quality testing should be conducted on the substances used to ensure compliance with relevant quality standards and safety requirements.
Metabolic fingerprint of this substance in human microbiota
The human microbiota, especially the gut microbiota, plays an important role in human health. They participate in various physiological processes such as digestion and absorption of nutrients, immune regulation, and synthesis of metabolites. Metabolic fingerprinting, as a holistic qualitative analysis method for samples, can quickly identify and classify microorganisms by comparing differences in spectra without analyzing or measuring specific components. Vanillin acid, as a natural compound found in edible plants and fruits, may have unique roles in the metabolic processes of human microbiota.
The concept of metabolic fingerprint and its application in microbial research
The concept of metabolic fingerprint
Metabolic fingerprinting refers to the comprehensive qualitative analysis of microbial metabolites using specific analytical techniques, comparing differences in spectra to quickly identify and classify microorganisms. It does not focus on the content and structure of specific metabolites, but rather on the overall characteristics of the metabolite profile.
Application in Microbial Research
Metabolic fingerprinting technology plays an important role in microbial identification, classification, and functional research. For example, the metabolic fingerprinting method developed by BIOLOG in the United States distinguishes and identifies bacteria based on their differential utilization of carbon (or nitrogen) sources.
Different bacteria utilize different carbon (or nitrogen) sources to enter metabolic processes, and they are unable to utilize other carbon (or nitrogen) sources. The specific metabolic fingerprint of each bacterium is formed by arranging and combining a series of carbon (or nitrogen) sources, which can be utilized by each bacterium or cannot be utilized.
The role of vanillic acid in the metabolism of human microbiota
The impact on the structure of gut microbiota
Vanillin acid may regulate the structure of gut microbiota by affecting its metabolic activity. Some studies have shown that vanillic acid has antibacterial and anti-inflammatory activities, which may inhibit the growth of certain harmful bacteria and promote the reproduction of beneficial bacteria. For example, vanillic acid can inhibit NF - κ B activation, reduce the production of inflammatory factors, and improve the inflammatory environment of the intestine, which is beneficial for the survival and colonization of beneficial bacteria. In addition, vanillic acid may also affect the synthesis of metabolites in the microbiota, alter the interactions between microbiota, and thus affect the structure of gut microbiota.
Association with other metabolites
Vanillin acid is closely related to other metabolites in the metabolic process of human microbiota. It can serve as an intermediate or substrate in certain metabolic pathways, participating in the metabolic network of the microbiota. For example, vanillic acid may be part of the metabolic pathway of certain aromatic compounds, related to the metabolism of amino acids such as phenylalanine and tyrosine. Meanwhile, the metabolites of vanillic acid may also affect the progress of other metabolic pathways, forming a complex metabolic regulatory network.
Changes in microbial metabolic fingerprint under specific disease states
Under specific disease conditions, the metabolic fingerprint of human microbiota may change, and the metabolism of vanillic acid may also be affected. For example, in patients with metabolic diseases such as diabetes and obesity, the metabolic function of intestinal flora is disordered, and the metabolic pathway of vanillic acid may change, leading to changes in its content in the body and the types of metabolites. By analyzing the metabolic fingerprint of vanillic acid in disease states, we can understand the abnormal metabolic functions of the microbiota, providing a basis for the diagnosis and treatment of diseases.
Methods and techniques for studying the fingerprint of vanillic acid metabolism
Sample collection and pretreatment
When conducting fingerprint studies on vanillic acid metabolism, it is first necessary to collect samples of human microbiota, such as fecal samples. The collected samples need to be pre treated to remove impurities and interfering substances. Common preprocessing methods include centrifugation, filtration, extraction, etc. For example, organic solvents such as methanol, ethanol, etc. can be used to extract vanillic acid and other metabolites from fecal samples.
Analytical techniques
At present, commonly used fingerprint analysis techniques for vanillic acid metabolism include nuclear magnetic resonance technology, mass spectrometry technology, etc. Nuclear magnetic resonance technology can perform qualitative and quantitative analysis of metabolites in samples. By detecting the chemical shifts and coupling constants of hydrogen or carbon atoms in metabolites, the structure of metabolites can be determined. Mass spectrometry technology can determine the molecular weight and fragment ion information of metabolites, further confirming their identity. In addition, nuclear magnetic resonance technology and mass spectrometry technology can be combined to improve the accuracy and sensitivity of analysis.
Data processing and analysis
The data obtained from analysis needs to be processed and analyzed to extract the metabolic fingerprint information of vanillic acid. Common data processing methods include peak recognition, peak alignment, normalization, etc. By comparing the peak area and height parameters of vanillic acid metabolites in different samples, the metabolic fingerprint of vanillic acid can be obtained. Then, multivariate statistical analysis methods (such as principal component analysis, cluster analysis, etc.) can be used to analyze the metabolic fingerprint and identify differences and similarities between different samples.
Frequently Asked Questions
As an acid, why is its main application not based on acidity, but on its "phenolic" properties?
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Its acidity (pKa ≈ 4.3) is relatively weak among common organic acids. Its core value lies in the potent antioxidant capacity conferred by phenolic hydroxyl groups (by providing hydrogen atoms to neutralize free radicals), as well as its role as a key synthetic intermediate for numerous natural products.
How can it surpass the single function of traditional preservatives (such as malic acid) in food preservation?
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It plays the role of a "versatile": 1) antioxidant, preventing oil spoilage; 2) Inhibit various microorganisms; 3) It is a natural component of many spices, with a more harmonious flavor. It has achieved multiple effects from anti-corrosion, quality assurance to fragrance preservation.
How does it demonstrate potential protective effects in the field of neuroscience?
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Preclinical studies have shown that it can penetrate the blood-brain barrier, alleviate neuroinflammation by inhibiting excessive activation of microglia and reducing the release of pro-inflammatory cytokines, which may have a positive impact on neurodegenerative diseases such as Alzheimer's disease and Parkinson's disease.
Why is it a key bridge for synthesizing "vanillin" and "ethyl vanillin", but not widely used as a fragrance?
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Because its aroma (weak vanilla with phenolic notes) is far less intense, pure, and pleasant than the vanillin derived from it. The chemical industry greatly optimizes its olfactory properties by methylating or ethylating it, making it an irreplaceable "precursor" for top spices.
What role does it play in the allelopathic interaction between plants and microorganisms?
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It is a key "signaling molecule" secreted by plant roots. At low concentrations, it can serve as a carbon source to promote the growth of certain symbiotic microorganisms; At high concentrations, it can inhibit seed germination and root growth of surrounding competing plants, helping the parent plant compete for survival resources.
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