Pectin, a natural polysaccharide found in the cell walls of most higher plants such as citrus fruits, has gained increasing attention over the past decade due to its relation to Galectin-3, a type of protein involved in many cellular functions.

Galectin-3 contains a carbohydrate recognition domain that allows it to bind to sugars found on the surface of cells and extracellular matrix components. Galectin-3 is involved in several cellular activities, including the epithelial–mesenchymal transition (EMT).

As a soluble fiber, pectin can absorb water and form a gel-like substance in the digestive tract, providing nourishment for beneficial gut bacteria. Thus, incorporating pectin-rich foods such as apples, citrus fruits, and berries into the diet can be beneficial.

The Bioavailability Challenge of Pectin and the Emergence of Modified Citrus Pectin

Due to its large molecular size, pectin is poorly absorbed in the small intestine and passes largely intact into the colon. Therefore, in this case, its benefits will be limited mainly to digestive health.

To enable pectin to be absorbed into the bloodstream, to increase the chance it can interact with the desired targets, the large pectin molecule has to be broken down into smaller pieces through enzymatic alterations. These smaller pieces of pectin are known as Modified Citrus Pectin (MCP).

Therefore, Modified Citrus Pectin is a form of pectin but with a lower molecular weight. MCP has a lower molecular weight than regular pectin, typically less than 20,000 Daltons, compared to pectin’s range of 60,000 to 130,000 Daltons.

Modified Citrus Pectin at MCS Formulas: Introducing a New Standard

Not all MCP powders are created equal, and most MCP powders available as food supplements are not fully water-soluble.

Our new MCS Modified Citrus Pectin formulation stands out for its purity, solubility, and bioavailability. Unlike established MCP powders, ours is highly soluble in water, at room temperature, leading to better bioavailability. This enhanced dissolution increases the potential for MCP to reach its potential.

Can Modified Citrus Pectin be taken with other supplements?

We generally recommend taking Modified Citrus Pectin separately rather than together with other supplements.

Some commercial products combine MCP with ingredients such as clay, chlorella, or other so-called binder ingredients. However, MCP is commonly used as a standalone supplement, and human studies investigating Modified Citrus Pectin have generally administered it on its own rather than as part of multi-ingredient formulations.

The practical reason for taking MCP separately is to minimize the possibility of interaction with other compounds taken at the same time.

For practical use, we therefore recommend taking our MCP approximately 30 minutes away from food and other supplements.

Some other pectin products, particularly forms that are not fully water-soluble, are recommended by their manufacturers to be taken further away from food. We therefore recommend following the specific directions provided for the individual MCP product being used.

If you take several supplements during the day, MCP is one of the products we would prioritize taking separately. Other supplements can generally be scheduled according to the directions provided for each individual product.

What are the molecular weight and degree of esterification of our MCP?

Modified Citrus Pectin is characterized not only by its source and purity, but also by parameters such as molecular weight and degree of esterification (DE).

For our current MCP batch (September 2026):

• Degree of esterification: 7.07%
• Galacturonic acid: 95.96%
• Molecular weight specification: 5–22 kDa

Historical GPC testing of the same MCP grade and manufacturer showed:

• Mn: 8.216 kDa
• Mp: 8.367 kDa
• Mw: 17.744 kDa
• Main molecular-weight peak: approximately 8.4 kDa

The degree of esterification describes the proportion of galacturonic acid groups that are esterified, while molecular-weight testing describes the size distribution of the pectin molecules.

These parameters can vary between different pectin products and between production batches. The values above are therefore provided as technical information for the September 2026 batch and historical testing of the same grade, rather than as fixed specifications for every future batch. They nevertheless provide a representative indication of the technical characteristics of the MCP grade used in our product.

Our MCP is primarily derived from lemon peel and is fully water-soluble.

*The statements in this section have not been evaluated by the FDA or EFSA.