# Precision-fermented infant formula ingredients

Upstream — fermentation & cell culture — Genetically modified yeast and fungi now produce bioactive milk proteins — chiefly lactoferrin, the iron-binding "pink gold" that makes up just 1% of whey proteins and has historically cost over $650 per kilogram,

Source: https://en.bioecon.ru/market/upstream/precision-fermented-infant-formula/