Calories in Mushroom, crimini

What makes mushroom so powerful?

Crimini, white button, and portobello mushrooms are all the exact same species, Agaricus bisporus. The difference lies entirely in maturity and a genetic mutation affecting pigmentation. White button mushrooms lack the dominant allele that produces the brown pigment, whereas criminis possess it. If left to grow, a crimini will open its cap, expose its gills, and expand into what we call a portobello. Beyond taxonomy, criminis are notable for their production of ergothioneine, a unique sulfur-containing amino acid that acts as a powerful antioxidant. Humans cannot synthesize ergothioneine, so dietary intake from fungi is our primary source. This compound accumulates in tissues subjected to oxidative stress, potentially offering cellular protection. Additionally, criminis are one of the few non-animal food sources of naturally occurring vitamin D2 (ergocalciferol). When exposed to UV light, either in the wild or commercially, their ergosterol content converts into vitamin D2, significantly boosting their nutritional profile. This makes them a valuable ingredient for those seeking plant-based nutrient density.