Overview
Spinosin is a naturally occurring flavonoid glycoside primarily extracted from Ziziphus jujuba (jujube) seeds, a plant used in traditional Chinese medicine for centuries. As a C-glycosyl flavone, it distinguishes itself structurally from common O-glycosides, contributing to its metabolic stability. Recent pharmacological studies highlight spinosin's interaction with GABA receptors and 5-HT1A serotonin receptors, underpinning its potential as a sedative and anxiolytic agent. The compound has gained attention in neuropharmacology research, particularly for sleep disorder applications.
Physical and Chemical Properties
With a molecular weight of 608.55 g/mol, spinosin presents as a fine pale yellow powder under standard conditions. Its C28H32O15 structure contains a diosmetin aglycone core with glucose and rhamnose sugar moieties, contributing to moderate polarity. The compound demonstrates thermal stability up to 200°C, with decomposition observed beyond this point. Solubility profiles show optimal dissolution in polar organic solvents like methanol (≥50 mg/mL) but limited aqueous solubility (≤1 mg/mL in water at 25°C), a factor critical for formulation development.
Main Applications
In pharmaceutical development, spinosin serves as a reference standard for quality control in herbal preparations containing jujube extracts. Current research explores its potential as an active pharmaceutical ingredient (API) for anxiety and insomnia treatments, with several preclinical studies demonstrating reduced sleep latency. The nutraceutical industry incorporates spinosin-enriched jujube extracts in sleep aid supplements, typically standardized to 0.5-2% spinosin content. Traditional medicine applications leverage its inclusion in multi-herb formulations for 'calming the spirit' in TCM theory.
Safety and Storage
Toxicological studies classify spinosin as low-risk, with LD50 values exceeding 2 g/kg in rodent models. However, proper handling with nitrile gloves and eye protection is recommended to prevent sensitization during bulk processing. For long-term stability, spinosin requires protection from oxidation and humidity. Optimal storage involves amber glass containers with desiccants at 2-8°C, maintaining stability for ≥36 months. Analytical grade material should demonstrate ≥98% purity by HPLC with documented absence of heavy metal contaminants.
B2B Procurement Guide
Industrial buyers should prioritize suppliers providing comprehensive analytical reports including HPLC chromatograms, residual solvent analysis, and heavy metal screening. Reputable manufacturers typically offer batch-specific COAs with quantification of related flavonoids like swertisin. Pricing tiers vary significantly by quantity, with bulk purchases (100g+) often discounted 20-30%. Current market trends show increasing demand from North American and European nutraceutical manufacturers, prompting expanded GMP-compliant production capacities in China and India.
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