≥90% (SDS-PAGE), recombinant, expressed in E. coli

light brown powder, ≥0.5 U/mg

deep brown powder, ≥4 U/mg

crude acetone powder, ≥50 units/mg solid

from Cucurbita species; L-ascorbate:oxygen oxidoreductase.

lyophilized powder, 1,000-3,000 units/mg protein

Grade I, ammonium sulfate suspension, ≥0.4 units/mg protein

Grade III, ammonium sulfate suspension, ≥0.8 units/mg protein