Saponin Bioactivity and Extraction Methods
Summary
Saponins are amphiphilic glycosides widely distributed in plant tissues, comprising a hydrophobic aglycone linked to one or more sugar moieties. They occur predominantly as triterpenoid or steroidal saponins and exhibit an array of biological activities, including antimicrobial, anti-inflammatory, anti-cancer and hypolipidaemic effects. In pharmaceutical and cosmetic industries they serve as vaccine adjuvants, emulsifiers and foaming agents. Extraction of saponins traditionally relies on aqueous or alcoholic solvent systems, often followed by liquid–liquid partitioning and chromatographic purification. Recent efforts have focused on sustainable approaches such as enzyme-assisted, ultrasound- or microwave-assisted extraction, and supercritical fluid extraction to improve yield, selectivity and environmental footprint. Analytical characterisation typically employs high-performance or ultraperformance liquid chromatography coupled to diode-array and mass spectrometric detectors, alongside spectrophotometric assays. Optimising parameters such as temperature, pH, solvent composition and solid-to-liquid ratio is crucial for maximising recovery while preserving bioactivity. Advances in statistical design of experiments and green technologies continue to drive improvements in both extraction efficiency and product quality.
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Saponin Bioactivity and Extraction Methods publication trend
The graph below shows the total number of articles in saponin bioactivity and extraction methods across all publications each year (not limited to Nature Index journals).
Technical terms
Saponin: Amphiphilic glycoside composed of a sugar chain and a lipophilic aglycone, exhibiting surfactant and bioactive properties.
Triterpenoid saponin: Subclass of saponins in which the aglycone is a pentacyclic triterpene, commonly responsible for pharmacological activities.
Response surface methodology: Statistical and mathematical technique for modelling and analysing processes in which multiple variables influence an outcome, used here to optimise extraction parameters.
UPLC-PDA-QTOF-MS/MS: Advanced analytical platform combining ultraperformance liquid chromatography with photo-diode array detection and quadrupole time-of-flight tandem mass spectrometry for high-resolution compound identification and quantification.
References
- Extraction of Saponin from Camellia oleifera Abel Cake by a Combination Method of Alkali Solution and Acid Isolation. Journal of Chemistry (2016).
- Simultaneous Determination and Quantification of Triterpene Saponins from Camellia sinensis Seeds Using UPLC-PDA-QTOF-MS/MS. Molecules (2019).
- Oleiferasaponin A2, a Novel Saponin from Camellia oleifera Abel. Seeds, Inhibits Lipid Accumulation of HepG2 Cells Through Regulating Fatty Acid Metabolism. Molecules (2018).
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