Overview
Licorice Root (Glycyrrhiza glabra) is a perennial herb native to Asia and Southern Europe, widely cultivated for its medicinal and culinary uses. In traditional Chinese medicine (TCM), it is known as 'Gancao' and has been used for over 2,000 years to harmonize herbal formulas and treat ailments such as coughs, ulcers, and liver disorders. Modern research highlights its bioactive compounds, including glycyrrhizin, flavonoids, and polysaccharides, which contribute to its therapeutic effects. The root is harvested after 3-4 years of growth, dried, and processed into slices, powder, or extracts for various applications.
Physical and Chemical Properties
Licorice Root is characterized by its distinct sweet flavor, which is 50 times sweeter than sucrose due to glycyrrhizin. The root's fibrous texture and brownish-yellow color make it easily identifiable. It contains triterpenoid saponins (e.g., glycyrrhizic acid), flavonoids (e.g., liquiritin), and coumarins. Glycyrrhizic acid, the primary active component, exhibits anti-inflammatory and antiviral properties. The root is soluble in water and alcohol, making it suitable for teas, tinctures, and syrups. Its stability under moderate storage conditions ensures a long shelf life when kept dry and away from light.
Main Applications
In the pharmaceutical industry, Licorice Root is used in cough syrups, throat lozenges, and herbal supplements for its expectorant and soothing effects. It is also a key ingredient in TCM formulas to detoxify and enhance the efficacy of other herbs. The food industry employs licorice extracts as natural sweeteners and flavor enhancers in candies, beverages, and tobacco products. Its hepatoprotective properties are leveraged in liver health supplements, while its anti-inflammatory effects are utilized in skincare products to treat eczema and psoriasis.
Safety and Storage
While Licorice Root is generally safe, excessive intake (over 100 mg/day of glycyrrhizin) can cause hypertension, hypokalemia, or edema due to pseudoaldosteronism. Pregnant women and individuals with heart or kidney conditions should use it cautiously. Proper storage involves keeping the dried root or extracts in airtight containers in a cool, dry environment (below 25°C). Processed forms like powders and extracts should be protected from humidity to prevent clumping or microbial growth.
B2B Procurement Guide
B2B buyers should prioritize suppliers with certifications like GMP, ISO, or organic labels to ensure quality and traceability. Key procurement metrics include glycyrrhizic acid content (typically 2-10%), origin (preferably Xinjiang or Gansu in China), and processing methods (e.g., sun-dried vs. machine-dried). Bulk pricing varies by form (whole root, slices, or extract) and purity. Negotiate contracts with clear specifications for moisture content (<12%), pesticide residues, and heavy metal limits. Consider seasonal availability, as harvests peak in autumn.
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