Dosage of hydrolyzable tannins

Hydrolyzable tannins are a family of polyphenols naturally present in many plants, including oak, pomegranate, and witch hazel. They primarily include derivatives of gallic acid and ellagic acid. These bioactive molecules are recognized for their antioxidant, astringent, and antimicrobial properties, which explains their growing interest in the functional food, nutraceutical, and herbal medicine sectors. The determination of hydrolyzable tannins allows for the standardization of plant extracts and ensures their efficacy and traceability.

Analytical methods for the determination of hydrolyzable tannins

The analysis of hydrolyzable tannins is based on reference techniques in analytical chemistry:

• HPLC (high performance liquid chromatography), which provides precise separation of different phenolic derivatives and allows the quantification of key markers such as gallic or ellagic acid.
• Spectrophotometry, used as a global method to estimate total polyphenol content, according to standardized protocols.

These approaches can be combined for a complete characterization. They are in line with other targeted analyses, such as the dosage of flavonoids or the dosage of anthocyanins , also used to enhance plant extracts rich in phenolic compounds.

Industrial and sectoral applications

The dosage of hydrolyzable tannins is essential in several areas:

• Human food: quality control of beverages, functional powders, plant extracts and products enriched with polyphenols.
• Nutraceuticals: formulation and standardization of food supplements intended for cardiovascular well-being, digestive support or the fight against oxidative stress.
• Animal nutrition: improvement of formulations by the addition of bioactive compounds with natural antimicrobial effects.
• Cosmetics: use of plant extracts for their astringent and protective properties.

These applications make the dosage of hydrolyzable tannins a key step in ensuring the effectiveness and compliance of formulations.

Matrices analyzed for hydrolyzable tannins

YesWeLab supports the analysis of hydrolyzable tannins in a wide range of matrices: crude plant extracts, botanical powders, nutraceutical capsules, fruit juices, wines, teas, and other functional formulations. Each matrix is ​​prepared according to appropriate protocols to obtain reliable and reproducible results.

Quality and compliance issues

The dosage of hydrolyzable tannins makes it possible to respond to several strategic challenges:

• Standardization of extracts to ensure consistent composition between production batches.
• Quality control of raw materials and finished products.
• Highlighting health or nutritional claims related to polyphenol content.
• Response to regulatory requirements regarding labeling and health safety.

These issues are similar to those of other polyphenol analyses, such as the dosage of proanthocyanidins or the dosage of coumarins .

YesWeLab's expertise in the dosage of hydrolyzable tannins

YesWeLab relies on a network of more than 200 partner laboratories in France and Europe, ISO 17025 and COFRAC accredited, specializing in physicochemical and nutritional analyses. Our experts select the method best suited to your matrices and your objectives: quality control, product development, or regulatory compliance. Thanks to our digital platform, you can manage your analyses simply: online quote requests, sample tracking, and rapid results delivery. Since 2020, numerous manufacturers, distributors, and design offices have trusted us to manage their polyphenol and plant compound analyses.

Take action

Do you want to control the hydrolyzable tannin content in your plant extracts, dietary supplements, or functional formulations? Entrust your samples to YesWeLab for accurate, standards-compliant analysis. Request a quote online today.