GLOSSARY

Sucrase splits sucrose into glucose and fructose within the human sucrase-isomaltase system.

For a sports product, separate the pathway's normal role from package claims; assess actual composition, amount and training tolerance rather than treating an enzyme name as a reason to buy or consume more.

Amylase breaks starch into smaller fragments, followed by brush-border completion to absorbable sugars. It does not cleave every branch or every fiber. Simple sugars differ: monosaccharides are already small, whereas disaccharides still need appropriate enzymes. In sport, intake rate and carbohydrate mixtures must fit tolerance. The word complex alone does not determine digestion speed because processing and food structure also influence accessibility.

Lactase splits lactose into glucose and galactose; sucrase yields glucose and fructose from sucrose. Maltase activity within brush-border enzyme complexes helps release glucose, while isomaltase handles particular branched linkages. These functions complement one another rather than naming an interchangeable universal enzyme. Tolerance of one sugar does not determine whether every carbohydrate is suitable, and a product must be matched to its actual substrate.

Brush-border enzymes on the lumen-facing intestinal surface complete particular digestive steps; not all digestive enzymes float freely in juice. Small products then enter through suitable routes. Reduced enzyme activity can alter tolerance of a specific substrate, but symptoms overlap. Discomfort after a meal does not identify the faulty enzyme or transporter by itself, and more enzyme activity is not automatically needed in healthy digestion.