Overview
Isoliquiritin is a bioactive flavonoid glycoside primarily extracted from licorice (Glycyrrhiza species), a plant widely used in traditional medicine. It belongs to the chalcone subclass and is structurally related to liquiritin, another licorice-derived compound. Its significance lies in its multifunctional biological activities, including antioxidant, anti-inflammatory, and potential anti-tumor effects. Research highlights isoliquiritin's role in modulating cellular pathways, such as NF-κB and MAPK, which are linked to inflammation and cancer progression. Its dual solubility (organic solvents and water) makes it versatile for formulations in pharmaceuticals and nutraceuticals.
Physical and Chemical Properties
Isoliquiritin appears as a yellow crystalline powder with a melting point of 212-215°C. Its molecular structure includes a glucose moiety attached to a liquiritigenin aglycone, contributing to its moderate solubility in polar solvents like methanol and ethanol but limited solubility in water. Key spectroscopic features include UV-Vis absorption maxima around 280 nm and 370 nm, useful for analytical quantification. Stability tests indicate degradation under prolonged exposure to light or high temperatures, necessitating inert storage conditions.
Main Applications
In pharmaceuticals, isoliquiritin is studied for its cardioprotective and neuroprotective effects, with potential applications in treating metabolic disorders and neurodegenerative diseases. It also exhibits skin-whitening properties by inhibiting tyrosinase, making it valuable in cosmetics. The nutraceutical industry incorporates isoliquiritin into dietary supplements for its antioxidant benefits. Emerging research explores its use in functional foods and as an adjuvant in chemotherapy due to its low toxicity profile.
Safety and Storage
Isoliquiritin is generally non-toxic at typical dosages, but high concentrations may cause mild gastrointestinal irritation. Occupational exposure guidelines recommend using gloves and masks to prevent inhalation or contact during handling. Storage requires protection from moisture and UV light, ideally in amber glass containers under nitrogen atmosphere. Shelf life typically exceeds two years when stored below 25°C with desiccants.
B2B Procurement Guide
When sourcing isoliquiritin, prioritize suppliers providing HPLC purity certificates (≥98%) and COAs (Certificates of Analysis). Batch-to-batch consistency is critical for industrial applications; request sample testing before large orders. Pricing varies by purity and scale, with bulk purchases (1 kg+) often discounted by 10-20%. Consider suppliers compliant with GMP or ISO standards, especially for pharmaceutical-grade material. Lead times commonly range from 2-4 weeks.
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