Also known as: fruit pectin, E440, high-methoxyl pectin
Pectin
·By Croix
What is pectin?
Pectin is a structural polysaccharide naturally present in the cell walls of fruits — apples, citrus rind, and quince are the highest commercial sources. It's the gelling agent in jam and jelly, and it's the second active ingredient in Maurten's hydrogel sports drink alongside sodium alginate.
Two grades exist commercially: high-methoxyl pectin (gels in the presence of acid and sugar — what jam-makers use) and low-methoxyl pectin (gels in the presence of calcium, less acid-sensitive). Hydrogel sports drinks rely on high-methoxyl pectin's behavior at acidic stomach pH.
How does it work in a sports drink?
On its own, pectin in solution is a viscous polymer. In combination with sodium alginate at acidic pH (i.e., once the drink hits stomach acid), the two polymers cross-link with each other to form the soft gel that defines a hydrogel sports drink.
Sutehall et al. 2020 reports that the alginate+pectin hydrogel beverage empties the stomach faster than a matched non-hydrogel control — at rest, in 8 healthy men. What hasn't been reproduced in independent matched-dose exercise-condition trials is a downstream performance, exogenous-CHO oxidation, or GI-tolerance benefit over the same carbohydrate dose without the pectin/alginate addition. See the linked research below.
How do I use it at home?
Pectin is cheap and food-safe — you can buy it at any grocery store for jam-making — but for sports-drink purposes the same caveat as sodium alginate applies: we don't have evidence the format outperforms a matched-dose plain glucose-fructose drink.
If you're specifically experimenting with home hydrogel recipes, use high-methoxyl pectin (the standard jam-and-jelly grade) and combine with sodium alginate in the proportions specified in a published Maurten-replication recipe. Expect modest results.
For the rest of us: the simplest, evidence-aligned move is to skip the hydrogel ingredients entirely and rely on a standard 1:0.8 maltodextrin-fructose formula at the right concentration. That's what every Carb Hack DIY recipe does by default.
DIY teardowns that use pectin
Linked above— all walk through how pectinfits into the specific commercial product's formulation.