Vitamin E dosage

Vitamin E testing quantifies this family of fat-soluble compounds with major antioxidant properties. It includes eight main forms: four tocopherols (alpha, beta, gamma, delta) and four tocotrienols, with alpha-tocopherol being the most biologically active form. Vitamin E plays an essential role in protecting cells against oxidative stress, in membrane stability, and in preventing the oxidation of dietary or cosmetic lipids. Its measurement is therefore crucial for manufacturers of supplements, enriched oils, nutraceutical formulations, or antioxidant skincare products.

Analytical methods: HPLC-UV and HPLC-fluorescence

YesWeLab offers quantitative analysis of vitamin E by high-performance liquid chromatography (HPLC), using two types of detection:

• HPLC-UV: reference method for quantifying tocopherols in simple or standardized matrices (supplements, oils, extracts).
• HPLC-fluorescence: more sensitive method, suitable for complex matrices, cosmetics or low concentrations, with better specificity for alpha-tocopherol.

The method can also be adapted to quantify forms other than alpha-tocopherol, according to your analytical or regulatory requirements (complete tocopherol profile, specific dosage of tocotrienols, etc.).

Why measure vitamin E?

The dosage of vitamin E can meet various objectives depending on the sector of activity:

• Validate alpha-tocopherol enrichment in food products, cosmetics or supplements.
• Ensure regulatory compliance with nutrition and health claims (Regulation (EU) No. 1924/2006).
• Guarantee the real antioxidant activity of the formulas, in relation to the conservation, efficacy or claim of the product.
• Control the stability of vitamin E in formulations sensitive to light, heat or oxidation.
• Check the quality of raw materials rich in vitamin E (vegetable oils, natural extracts, premixes, etc.).

Analyzed matrices

Our partner laboratories can perform vitamin E assays on numerous matrices, including:

• Food supplements (capsules, oils, tablets, powders)
• Vegetable oils (sunflower, wheat germ, almond, rapeseed, etc.)
• Plant extracts rich in tocopherols or tocotrienols
• Fortified food products (margarines, cereals, nutritional bars)
• Cosmetics (serums, antioxidant creams, body oils)
• Premix or animal feed

Analytical protocols are adjusted according to the complexity of the matrix and the client's objectives (simple dosage, detailed profile, stability monitoring, etc.).

Areas of application

Vitamin E dosage is essential in many industrial sectors:

• Nutraceuticals: development of antioxidant or anti-aging supplements
• Cosmetics: control of products claiming a protective, regenerating or moisturizing action
• Food industry: formulation of enriched foods or extension of product shelf life
• Animal nutrition: verification of tocopherol levels in rations or premixes
• Research and development: formulation, stability assessment, validation of claims

Accredited laboratories for your tocopherol analyses

YesWeLab collaborates with accredited laboratories (ISO 17025, COFRAC, etc.) specialized in the analysis of fat-soluble vitamins. We select the partner laboratory best suited to your needs, based on:

• The type of vitamin E to be dosed (alpha-tocopherol alone or complete profile)
• The complexity of the matrix
• The expected sensitivity
• The regulatory or R&D context

Our services are carried out under strict quality conditions, with clear interpretation of the results.

A digital platform to centralize your requests

Since 2020, YesWeLab has simplified the management of vitamin analyses thanks to a comprehensive online interface. Our platform allows you to:

• To submit your analysis requests quickly
• To monitor the processing of your samples
• Access your results securely
• To benefit from the support of our scientific team

We put our expertise at the service of your projects, with a logic of rigor, responsiveness and trust.

Further analyses recommended

• Analysis of natural antioxidants 
• Evaluation of the oxidative stability of oils

Request your quote today

Add this service to your quote via our platform or contact our scientific team. YesWeLab supports you in all your vitamin E and antioxidant analyses, with reliable, fast solutions tailored to your needs.