Dosage of quercetin-3-O-gentiobiside

Quercetin-3-O-gentiobiside is a glycosylated derivative of quercetin, naturally occurring in several medicinal plants, including St. John's wort (Hypericum perforatum). It is being studied for its antioxidant properties and its contribution to the overall biological activity of plant extracts.

The dosage of quercetin-3-O-gentiobiside is essential for:

• Standardize plant extracts used in nutraceuticals
• Track quality markers in dietary supplements
• Control the concentration of glycosylated flavonoids in finished products

Available analytical methods

The analysis is carried out according to the complexity of the matrix:

• HPLC-DAD: robust method for simple or standardized extracts
• LC-MS/MS: recommended for complex or enriched products, with specific detection of glycosides

Affected matrices

This dosage is suitable for the following samples:

• Dry or purified extracts of St. John's wort or other plants rich in flavonoids
• Infusions, herbal powders, capsules or tablets
• Standardized products with antioxidant or relaxing properties
• Nutraceutical mixtures containing glycosylated flavonoids

Industrial interests

The analysis of quercetin-3-O-gentiobiside is particularly relevant for:

• Manufacturers of St. John's Wort food supplements
• Laboratories specializing in phytotherapy and botanical extracts
• Plant-based cosmetic companies seeking natural active ingredients
• R&D project leaders in health nutrition and standardized extracts

Recommended Related Analyses

• Quercetin assay – parent flavonol used as analytical reference
• Hypericin dosage – another marker of St. John's wort
• Total Flavonoid Assay – for overall quantification of flavonoids

Why choose YesWeLab?

• Access to more than 200 partner laboratories specializing in plant analyses
• Techniques validated according to good laboratory practices (GLP) and ISO 17025 / COFRAC requirements
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Need to quantify quercetin-3-O-gentiobiside in your extracts?

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