%0 Journal Article %T Statistical Analysis of Metal Chelating Activity of Centella asiatica and Erythroxylum cuneatum Using Response Surface Methodology %A R. J. Mohd Salim %A M. I. Adenan %A A. Amid %A M. H. Jauri %J Biotechnology Research International %D 2013 %I %R 10.1155/2013/137851 %U http://dx.doi.org/10.1155/2013/137851