Symposium on Mycotoxins in Human Health: The Proceedings of by I. F. H. Purchase (eds.)

By I. F. H. Purchase (eds.)

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C. SCHABORT AND M. J. --------- ------.. A,nm 1. Difference spectra of aflatoxins with calf thymus DNA. M DNA-P. Afiatoxins B1o B2, M2, G1o 0 2, M1 and B2. and G2. , £, 0, • and x, respectively. FIG. Table 1 Effect of Afiatoxins B1, B2 and M2 on deoxyribonuclease Activity Toxin Aflatoxin B1 Aflatoxin B1 Aflatoxin B2 Aflatoxin B2 Aflatoxin M2 Aflatoxin M2 Control Toxin concn. M Final corr. M. At lower concentrations, Bt was the strongest activator and M2 was the weakest. Aflatoxins B2a• 028 , 02 and Mt were found to be inhibitors of deoxyribonuclease activity at all concentrations studied, whereas aflatoxin 0 1 had no definite effect.

Several aflatoxins and related compounds were studied. Their structures are shown in Figure 1. Various experiments were conducted using aflatoxins Bt. Bz, G1, and also tetrahydrodeoxy B1 (the reduction product), and three substituted coumarins related to B1, without the furanofuran portion of the molecule. , 19651) in the course of the aflatoxin structureelucidation. We have studied 'compound 11' most extensively, as it most closely approximates the aflatoxin B 1 molecule. Using equilibrium dialysis, Sporn compared the binding properties of aflatoxin B1.

And the principal findings will be summarised here. , in press, 19717). Several aflatoxins and related compounds were studied. Their structures are shown in Figure 1. Various experiments were conducted using aflatoxins Bt. Bz, G1, and also tetrahydrodeoxy B1 (the reduction product), and three substituted coumarins related to B1, without the furanofuran portion of the molecule. , 19651) in the course of the aflatoxin structureelucidation. We have studied 'compound 11' most extensively, as it most closely approximates the aflatoxin B 1 molecule.

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