prepared using 0–5mML-leucine (Sigma-Aldrich Chemical Co., St. Louis, MO, USA) assuming 100% purity. Free amino groups are expressed as mmoleL-leucine/g sample.
prepared using 0–5mML-leucine (Sigma-Aldrich ChemicalCo., St. Louis, MO, USA) assuming 100% purity. Free aminogroups are expressed as mmoleL-leucine/g sample.