Acorn flour (0.3 g) was weighed into a 50-ml volumetric flask and adjusted to 50 ml with 6 M HCl, containing 1 ml of 1 g/L reagent-grade phenol and 5000 nmol of norleucine (internal standard).
Acorn flour (0.3 g) was weighedinto a 50-ml volumetric flask and adjusted to 50 ml with 6 MHCl, containing 1 ml of 1 g/L reagent-grade phenol and 5000 nmolof norleucine (internal standard).