Tannin dosage

Tannins are polyphenols widely distributed in the plant kingdom. Found in plants such as grapes, tea, oak, and pomegranate, they are recognized for their antioxidant, astringent, and protective properties. These compounds play a key role in the sensory quality of foods and beverages, as well as in their biological effects. Tannin assays quantify their content, ensure the standardization of extracts, and guarantee the compliance of products intended for human food, nutraceuticals, and animal nutrition.

Analytical methods for the determination of tannins

Tannin analysis can be performed using different approaches, depending on the needs:

• Spectrophotometry, with global methods such as Folin-Denis or Folin-Ciocalteu, which allow an estimation of the total polyphenol content.
• HPLC (high performance liquid chromatography), which allows the separation and quantification of different types of tannins (hydrolyzable and condensed) with precision.

These techniques are sometimes combined to obtain a complete view of the phenolic profile. They are similar to those used for the determination of flavonoids , the determination of anthocyanins or the determination of proanthocyanidins, other phenolic compounds of interest.

Industrial and sectoral applications

The dosage of tannins is essential in many areas:

• Human nutrition: monitoring the composition of wines, teas, fruits, vegetables, juices or extracts rich in polyphenols.
• Nutraceutical: formulation of food supplements enhancing the antioxidant and protective effects of tannins.
• Animal nutrition: optimization of formulations enriched with polyphenols for their antimicrobial or digestive effects.
• Cosmetics: integration of tannic extracts into skin care products thanks to their astringent and protective properties.

These applications show that tannin dosage is an essential step in developing and securing functional and innovative products.

Matrices analyzed for tannins

YesWeLab supports tannin analysis in a wide variety of matrices: raw plant extracts, nutraceutical powders, capsules, foods (fruits, teas, wines, cereals), dietary supplements, and cosmetic formulations. Each matrix undergoes specific preparation to eliminate interferences and obtain reliable results.

Quality and compliance issues

The dosage of tannins responds to several strategic challenges for manufacturers:

• Standardization of extracts to ensure a consistent and reproducible composition.
• Quality control of raw materials and finished products.
• Promotion of health and nutritional claims related to polyphenols.
• Compliance with regulatory requirements regarding food safety and traceability.

These issues are part of a global approach to quality control, supplemented by other targeted analyses such as the dosage of coumarins or the dosage of phenolic acids.

YesWeLab's expertise in tannin dosage

YesWeLab collaborates with more than 200 partner laboratories in France and Europe, accredited ISO 17025 and COFRAC, specializing in physicochemical and nutritional analyses. Based on your matrices and objectives (quality control, regulatory compliance, product innovation), our experts select the most appropriate method. Thanks to our digital platform, you benefit from a simplified service: online quotes, sample tracking, and rapid results delivery. Since 2020, manufacturers, distributors, and design offices have entrusted us with their analyses to secure and enhance the value of their products.

Take action

Do you want to measure the tannin content in your plant extracts, food supplements, beverages, or cosmetic formulations? Entrust your analyses to YesWeLab for reliable, standards-compliant results. Request a quote online today.