Vitamin E dosage

Vitamin E levels can be measured to quantify this family of fat-soluble compounds with major antioxidant properties. It comprises eight main forms: four tocopherols (alpha, beta, gamma, and delta) and four tocotrienols, with alpha-tocopherol being the most biologically active. Vitamin E plays a vital role in protecting cells against oxidative stress, maintaining membrane stability, and preventing the oxidation of dietary and cosmetic lipids. Therefore, measuring its levels is crucial for manufacturers of supplements, fortified oils, nutraceutical formulations, and 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: a 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 other forms than alpha-tocopherol, depending on your analytical or regulatory requirements (full tocopherol profile, specific tocotrienol assay, etc.).

Why measure vitamin E levels?

Vitamin E testing can be used to meet various objectives depending on the sector of activity:

• Validate the enrichment of alpha-tocopherol in food products, cosmetics or supplements.
• Ensure regulatory compliance with regard to nutrition and health claims (Regulation (EU) No 1924/2006).
• To guarantee the actual antioxidant activity of the formulas, in relation to the preservation, efficacy or claim of the product.
• Controlling 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…).

Analyzed matrices

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

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

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

Areas of application

Vitamin E measurement is essential in many industrial sectors:

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

Accredited laboratories for your tocopherol analyses

YesWeLab collaborates with accredited laboratories (ISO 17025, COFRAC, etc.) specializing 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 measured (alpha-tocopherol alone or complete profile)
• The complexity of the matrix
• The expected sensitivity
• The regulatory or R&D context

Our services are performed under strict quality conditions, with a clear interpretation of the results.

A digital platform to centralize your requests

Since 2020, YesWeLab has simplified vitamin analysis management with a comprehensive online interface. Our platform allows you 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 focus on 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 requirements.