Smectite Interactions with Flavomononucleotide1

M. M. Mortland, J. G. Lawless, H. Hartman and R. Frankel
Department of Crop and Soil Sciences, Michigan State University East Lansing, Michigan 48824
Ames Research Center (NASA), Moffett Field, California 94035
Massachusetts Institute of Technology, Cambridge, Massachusetts 02139
1 Published as Journal Article No. 10975 of the Michigan Agricultural Experiment Station, East Lansing, Michigan 48824.

Abstract: Adsorption isotherms and UV-visible and Mössbauer spectroscopic data point to specific interactions between flavomononucleotide (FMN) and Fe3+-smectite. The maximum amount of FMN adsorption was 0.3 mmole/g of Fe3+-smectite giving a 1:1 molar proportion of Fe3+ and FMN. The results suggest a Fe3+-FMN complex residing at the smectite surface. Other homoionic smectites (Cu2+, Zn2+, and Ca2+) exhibited lower levels of adsorption and less apparent specific interaction.

Key Words: Adsorption • Flavomononucleotide • Mössbauer spectroscopy • Organo-clays • Smectite • UV-visible spectroscopy

Clays and Clay Minerals; August 1984 v. 32; no. 4; p. 279-282; DOI: 10.1346/CCMN.1984.0320405
© 1984, The Clay Minerals Society
Clay Minerals Society (www.clays.org)