Heterologous Expression of a Position 2-Substituted (1→3)-β-d-Glucan in Lactococcus lactis

摘要

Exopolysaccharides play an important role in the rheology and texture of fermented foods, and among these β-glucans have immunomodulating properties. We show that the overproduction of the Pediococcus parvulus GTF glycosyltransferase in an uncapsulated Lactococcus lactis strain results in synthesis and secretion (300 mg liter⁻¹) of a position 2-substituted (1→3)-β-d-glucan that has potential use as a food additive.