Calcium Complexation and Acid-Base Properties of L-Gulonic Acid , a Diastereomer of D-Gluconic Acid

1 Department of Inorganic and Analytical Chemistry, University of Szeged, Dóm tér 7, H–6720 Szeged, Hungary 2 Department of Physical Chemistry and Material Science, University of Szeged, Rerrich Béla tér 1, H–6720 Szeged, Hungary 3 Department of Organic Chemistry, University of Szeged, Dóm tér 8, H-6720 Szeged, Hungary 4 Material and Solution Structure Research Group, University of Szeged, Institute of Chemistry, Aradi Vértanúk tere 1, H–6720 Szeged, Hungary