Dosage of insoluble, soluble and total fibers

Dietary fiber is an essential component of human and animal nutrition, playing a key role in digestive health, metabolism, and satiety. There are three main categories: insoluble fiber , which promotes intestinal transit; soluble fiber , which is involved in regulating blood sugar and cholesterol; and total fiber , which is their sum. Quantifying these different fractions is a major challenge for product formulation, nutritional labeling, and promoting health claims.

Analytical methods for fiber determination

The determination of insoluble, soluble and total fibers is based on standardized methods, guaranteeing reliable and reproducible results:

• Gravimetric method : after enzymatic digestion simulating the digestive process, the fiber fractions are separated, dried and weighed.
• AOAC and Codex enzymatic methods : these define international reference protocols for the evaluation of dietary fiber in complex matrices.

These standardized methods ensure regulatory recognition of the results, which are essential for the food and animal nutrition industries. They are part of the same framework of scientific rigor as other nutritional analyses offered by YesWeLab, such as the dosage of proteins , total carbohydrates or the calculation of calories .

Industrial and regulatory applications

The dosage of soluble, insoluble and total fiber concerns several strategic sectors:

• Food industry : quality control of flours, cereals, legumes, fruits, vegetables and processed products.
• Nutraceuticals : standardization of fiber-enriched food supplements, with promotion of “rich in fiber” or “source of fiber” claims.
• Animal nutrition : optimization of animal feed formulations, taking into account the effects of fiber on digestion and zootechnical performance.
• Research and development : study of the impact of fibers on metabolic health, intestinal microbiota or the formulation of innovative products.

These analyses are also essential to meet consumer expectations in terms of nutritional transparency and health benefits.

Matrices analyzed for fiber dosage

The test applies to a wide variety of matrices: raw plant extracts, flour and legume powders, food supplements, finished products (biscuits, cereals, fortified drinks), and animal nutrition formulations. The methods are adapted according to the matrix to ensure reliable and representative results.

Compliance and traceability issues

European regulations (INCO Regulation No. 1169/2011) require accurate declaration of dietary fiber on nutrition labels. The dosage makes it possible to: verify the actual fiber content claimed, justify the use of nutritional claims ("high in fiber" from 6 g/100 g), compare consistency between different production batches, and strengthen the traceability of food and nutraceutical formulations. This approach is complementary to other key nutritional parameters such as sodium or total lipids.

YesWeLab's expertise in fiber dosage

YesWeLab collaborates with a network of more than 200 partner laboratories in France and Europe, selected for their expertise and accreditations (ISO 17025, COFRAC, etc.). Our teams support each client in defining the most suitable analytical protocol, based on the matrix and regulatory requirements. Thanks to our digital platform, you can manage your analytical needs with ease: rapid quote request, online tracking, and receipt of results within optimized timeframes. Since 2020, numerous manufacturers, distributors, and design offices have entrusted us with their nutritional analyses to secure their labels and enhance the value of their products.

Take action

Would you like to know the soluble, insoluble, and total fiber content of your food or animal feed samples? Entrust your analyses to YesWeLab for reliable, standards-compliant results. Request a quote online now for your dietary fiber assay.