Dietary glycosylated phytochemical

Dietary glycosylated phytochemicals are a diverse group of plant-derived compounds where a bioactive aglycone is chemically bonded to one or more sugar moieties (Holst & Williamson, 2008). Common examples include flavonoid glycosides, anthocyanins, and saponins found in fruits, vegetables, and grains (Manach et al., 2004). These compounds typically require hydrolysis by intestinal enzymes, such as lactase-phlorizin hydrolase (LPH), or gut microbiota to release the lipophilic aglycone (Day et al., 2000). Once released, the aglycones are absorbed and exert biological effects by interacting with various cellular receptors and signaling pathways (Nemes & Orsat, 2021). They are widely studied for their roles in reducing oxidative stress, modulating inflammatory pathways, and potentially preventing chronic diseases like cancer and cardiovascular disorders (Liu, 2013). While they possess significant bioactivity, they are generally considered dietary components or pharmacological leads rather than therapeutic targets themselves. Their therapeutic potential is often challenged by low bioavailability and significant inter-individual variability in metabolism (Rein et al., 2013). Research focuses on understanding how these molecules interact with the human microbiome to produce health-promoting metabolites (Cardona et al., 2013). They can also influence the activity of drug-metabolizing enzymes, leading to potential herb-drug interactions (Fasinu et al., 2012). Overall, they represent a critical interface between nutrition and pharmacology in the context of chronic disease prevention.

Other names

Phytochemical glycosidePlant glycosideGlycoconjugated phytochemicalSecondary metabolite glycoside

Dietary glycosylated phytochemicals act as prodrugs that undergo enzymatic or microbial hydrolysis in the gastrointestinal tract to release bioactive aglycones, which subsequently modulate intracellular signaling pathways such as Nrf2 and NF-kappaB.