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(A) Inhibition of human MAO-A and -B by carbohydrate βCs 1-4, harman, and norharman. (B) Elimination of the cation radical TMB+• in the presence of carbohydrate βCs 1–4 (30 μM) and antioxidants (30 μM). (C) Interaction of carbohydrate βC 1 (a) and ethidium bromide (b) with calf thymus DNA measured with UV–vis spectra. Increasing concentrations of DNA are added to a solution of 1 (25 μM) or ethidium bromide (25 μM). A mixture of isomers of 1 is used.
