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 phytotherapy sectors. Measuring 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 relies on reference techniques in analytical chemistry:

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

These approaches can be combined for a complete characterization. They are consistent with other targeted analyses, such as flavonoid or anthocyanin assays , also used to assess the value of plant extracts rich in phenolic compounds.

Industrial and sectoral applications

The measurement of hydrolyzable tannins is essential in several areas:

• Human nutrition: 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 through the addition of bioactive compounds with a natural antimicrobial effect.
• Cosmetics: valorization of plant extracts for their astringent and protective properties.

These applications make the determination of hydrolyzable tannins a key step in ensuring the efficacy and conformity of formulations.

Matrices analyzed for hydrolyzable tannins

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

Quality and compliance issues

The dosage of hydrolyzable tannins helps to address several strategic challenges:

• Standardization of extracts to guarantee a consistent composition between production batches.
• Quality control of raw materials and finished products.
• Highlighting health or nutritional claims related to polyphenol content.
• Meeting regulatory requirements for labeling and food safety.

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

YesWeLab's expertise in the measurement of hydrolyzable tannins

YesWeLab relies on a network of over 200 partner laboratories in France and Europe, accredited to ISO 17025 and COFRAC standards, specializing in physicochemical and nutritional analyses. Our experts select the method best suited to your matrices and objectives: quality control, product development, or regulatory compliance. Thanks to our digital platform, you can easily manage your analyses: request quotes online, track samples, and receive results quickly. Since 2020, numerous manufacturers, distributors, and engineering firms have entrusted us with the management of their polyphenol and plant compound analyses.

Take action

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