two modifications of lowry 's procedure ( markwell 's and kresze 's ) were investigated for interference by zwitterionic buffers ) ( hepes , hepps , pipes , mes , mops , ches , caps , tris , glycylglycine , bicine ) , detergents ( triton-x-100 , digitonin ) , sugars ( sucrose , mannitol , sorbitol ) , salts ( nacl , kcl , ammonium acetate ) , chelators ( edta ) , and reducing agents ( dithiothreitol , gsh , ascorbic acid ) .
C0242209
sugars
C0038636
sucrose