Overview
Onion extract is derived from the bulbs of Allium cepa, commonly known as onions. It is a concentrated form of the bioactive compounds found in onions, including flavonoids like quercetin and sulfur-containing compounds such as allyl sulfides. These compounds are responsible for the extract's antioxidant, anti-inflammatory, and antimicrobial properties. Onion extract is widely used in various industries, including food, pharmaceuticals, and cosmetics. Its natural origin and health benefits make it a popular choice for functional foods and dietary supplements. The extract is available in different forms, such as powders, liquids, and oils, depending on the intended application.
Physical and Chemical Properties
Onion extract is typically a yellow to brown powder or liquid, depending on the processing method. It is soluble in water and ethanol, making it versatile for various formulations. The extract contains a complex mixture of compounds, including quercetin, sulfur compounds, and other polyphenols, which contribute to its bioactive properties. The density of powdered onion extract is approximately 0.5-0.8 g/cm³. The extract is stable under normal storage conditions but should be protected from light and moisture to prevent degradation. Its solubility and stability make it suitable for use in beverages, capsules, and topical applications.
Main Applications
Onion extract is used in the food industry as a natural flavoring agent and preservative due to its antimicrobial properties. It is also incorporated into dietary supplements for its potential health benefits, such as supporting cardiovascular health and reducing inflammation. In the cosmetics industry, onion extract is valued for its antioxidant and skin-soothing properties. It is commonly found in skincare products aimed at reducing signs of aging and improving skin texture. Additionally, the pharmaceutical industry explores its potential in wound healing and anti-cancer therapies, though more research is needed in these areas.
Safety and Storage
Onion extract is generally recognized as safe (GRAS) for consumption and topical use. However, individuals with sensitive skin or allergies to onions may experience irritation. It is advisable to conduct a patch test before using onion extract in cosmetic formulations. Proper storage is essential to maintain the extract's efficacy. It should be kept in a cool, dry place away from direct sunlight. Sealed containers are recommended to prevent moisture absorption and contamination. For large-scale storage, controlled environments with low humidity are ideal.
B2B Procurement Guide
When procuring onion extract, it is crucial to verify the supplier's credentials and product specifications. Key factors to consider include the extract's purity, solvent residues, and concentration of bioactive compounds like quercetin. Organic certification may also be important for certain markets. Price ranges vary depending on the form and quality of the extract. Bulk purchases typically offer cost savings, but it is essential to ensure consistent quality across batches. Requesting samples and third-party lab reports can help in evaluating the product before committing to large orders.
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