Overview
Licorice root extract is derived from the roots of Glycyrrhiza glabra, a perennial herb native to Europe and Asia. It has been used for centuries in traditional Chinese and Ayurvedic medicine for its therapeutic properties. The extract contains glycyrrhizin, a compound 50 times sweeter than sucrose, along with flavonoids, coumarins, and sterols. The modern industrial extraction process typically involves water or ethanol to isolate bioactive components. Its multifunctional properties make it valuable across industries, from pharmaceuticals to confectionery. In B2B markets, it is commonly traded as a standardized powder or liquid concentrate with specified glycyrrhizin content.
Physical and Chemical Properties
Licorice extract exhibits hygroscopic properties, requiring careful moisture control during storage. The powder form has a characteristic aromatic odor and persistent sweet taste. Its active component glycyrrhizin (C42H62O16) accounts for most pharmacological effects, while isoliquiritigenin and glabridin contribute to antioxidant activity. Chemically, it demonstrates stability in acidic conditions (pH 2-6) but may degrade under prolonged heat exposure above 60°C. The extract shows synergistic effects when combined with other herbal compounds, enhancing bioavailability in pharmaceutical formulations. Analytical methods like HPLC are used to quantify marker compounds for quality control.
Main Applications
In pharmaceuticals, licorice extract serves as an expectorant in cough syrups and demonstrates hepatoprotective effects in liver disease formulations. Its anti-inflammatory properties make it valuable in topical creams for eczema and psoriasis. The food industry utilizes it as a natural sweetener in candies and chewing tobacco, while also functioning as a flavor modifier in beers and soft drinks. Cosmetic applications include skin-lightening creams due to glabridin's tyrosinase inhibition and anti-aging products leveraging its antioxidant capacity. Recent research explores its potential in functional foods targeting metabolic syndrome. Industrial usage extends to tobacco processing, where it enhances flavor profiles.
Safety and Storage
While generally recognized as safe (GRAS), prolonged consumption of glycyrrhizin exceeding 100mg/day may cause pseudohyperaldosteronism. EU regulations require warning labels for products containing >10g/kg glycyrrhizic acid. The deglycyrrhizinated form (DGL) is available for sensitive applications. Proper storage involves airtight containers with desiccants to prevent clumping. Bulk powder should be palletized in a warehouse with <60% humidity. Shelf life typically reaches 24 months when stored below 25°C. Transport requires protection from extreme temperatures and moisture to maintain stability.
B2B Procurement Guide
Commercial buyers should specify: 1) Extraction method (water/ethanol), 2) Glycyrrhizin content (standard 20% or custom), 3) Solvent residues (meeting pharmacopeia standards), and 4) Microbial limits. Organic certification (USDA/EU) adds 15-30% premium. Chinese suppliers dominate production, but European manufacturers offer higher-priced, pharmacopeia-grade extracts. Sample testing should verify absence of heavy metals (lead <5ppm) and pesticides. MOQs typically start at 25kg for powders. Container-load purchases (20MT+) may secure 8-12% discounts. Consider toll processing options for custom formulations. Payment terms commonly require 30% deposit with LC at shipment.
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