Flavonoid dosage

What are flavonoids?

Flavonoids are phenolic compounds naturally present in many plants, fruits, vegetables, teas, and botanical extracts. They are widely recognized for their antioxidant, anti-inflammatory, and protective properties against cellular oxidative stress.

They play a key role in nutraceutical formulations, natural cosmetics, functional products, and dietary supplements. Their dosage ensures the quality, stability, and concentration of the active plant ingredients.

Why measure flavonoids?

Flavonoid measurement is essential for:

• Ensuring the quality of plant extracts or raw powders
• Define an antioxidant profile for food or cosmetic products
• To validate the conformity of a batch with respect to specifications (plant-based raw materials)
• Measuring the effectiveness of a nutritional supplement or antioxidant cosmetic product
• Promoting products with high polyphenol content in a marketing or scientific approach

The results are often expressed in quercetin equivalents, a reference flavonoid.

Available analytical methods

YesWeLab offers several validated methods depending on the analytical objectives:

• Colorimetric spectrophotometric method (aluminum chloride reaction): overall determination of total flavonoids in plant extracts or beverages
• HPLC (high-performance liquid chromatography): separation and specific quantification of individual flavonoids (quercetin, kaempferol, rutin, etc.)
• LC-MS (liquid chromatography coupled with mass spectrometry): targeted trace analysis in complex matrices

These methods can be adapted to different types of products and levels of expected precision.

Matrices involved

• Dry or liquid plant extracts
• Plant powders or raw materials
• Dietary supplements (capsules, tablets, oral solutions)
• Functional drinks, infusions, plant-based juices
• Cosmetic products (serums, creams, masks)
• Foods rich in polyphenols

The results enable reliable analytical traceability in the context of R&D, quality control or product certification.

Regulatory context and quality

Flavonoids are not subject to specific legal limits, but their dosage:

• Supports health or antioxidant claims
• Justify the biological properties of a plant product
• Integrates with HACCP, ISO 22000 or FSSC procedures
• Required in B2B supplier contracts, particularly for nutraceutical and export markets

The analysis is also useful for monitoring the stability of assets over time or under different formulation conditions.

Why choose YesWeLab?

YesWeLab helps you structure your flavonoid analyses with ISO 17025 or COFRAC accredited laboratories specializing in phytochemistry and plant quality control.

Our service includes:

• Choosing the analytical method based on the matrix and your objectives
• A scientific interpretation of the results is available upon request
• Fast and centralized management via our digital platform
• A single interface to manage all your analyses, from request to report delivery

Need to measure the flavonoids in your extracts or formulated products?

Partner with YesWeLab to guarantee the performance and quality of your plant-based ingredients. Contact us or add the analysis to your online quote.