Research
My research interests center around the so-called lipophilic pigments. Specifically, these are the chlorophylls, chlorophyll derivatives, carotenoids, certain polyaromatic hydrocarbons (perylene) and a dimeric indole-phenol (scytonemin).
Recent Publications
Louda, J.W., Neto, R.R., Magalhaes, A.R.M., and Schneider, V.F. (2008) Pigment alterations in the brown mussel Perna perna. Comparative Biochemistry and Physiology (ms#15043: accepted, in press)
Szymczak-Zyla, M., Louda, J.W. and Kowalewska, G. (2008) Comparison of extraction and HPLC methods for marine sedimentary chloropigment-a determinations. J. Liquid Chromatogr. & Rel. Tech. 31: 1162-1180.
Louda, J.W. (2008) Pigment-Based Chemotaxonomy of Florida Bay Phytoplankton; Development and Difficulties. J. Liquid Chromatogr & Rel. Tech. 31: 295-323.
Szymczak-Zyla, M., Louda, J.W. and Kowalewska, G. (2008) Influence of microorganisms on chlorophyll-a degradation in the marine environment. Limnol. Oceanogr. 58: 851-862.
Moretzaei-Rad, M. and Louda, J.W. (2007) Polystyrene-divinylbenzene (PS-DVB), a mild stationary phase for the chromatographic purification of the unstable 132, 173-cyclopheophorbide-a-enol. J. Liquid Chromatogr. & Rel. Technol. 30: 1361-1369.
Hgerthey, S.E., Louda, J.W. and Mongkronsri, P. (2006) Evaluation of pigment extraction methods and a recommended protocol for periphyton chlorophyll a determination and chemotaxonomic assessment. J. Phycology 42: 1125-1136.
Neto, R.R., Mead, R.N., Louda, J.W. and Jaffe, R. (2006) Organic biogeochemistry of detrital flocculent material (floc) in a subtropical, coastal, wetland. Biogeochem. 77: 283-304.
Louda, J.W. and Monghkonsri, P. (2004) Comparison of spectrophotometric estimates of chlorophylls-a, -b, -c and 'pheopigments' in Florida Bay seston with that obtained by high performance liquid chromatography-photodiode array analyses. Fla. Scient. 67 (4): 281-292.
Louda, J.W., Loitz, J.W., Melisiotis, A. and Orem, W.H. (2004) Potential Sources of Hydrogel Stabilization of Florida Bay Lime Mud Sediments and Implications for Organic Matter Preservation. J. Coastal Res. 20: 448-463.
Louda, J.W., Liu, L. and Baker, E.W. (2002) Senescence- and death-related alteration of chlorophylls and carotenoids in marine phytoplankton. Org. Geochem. 33: 1635-1653.
Louda, J.W., Loitz, J.W., Rudnick, D.T. and Baker, E.W. (2000) Early diagenetic alteration of chlorophyll-a and bacteriochlorophyll-a in a contemporaneous marl ecosystem. Org. Geochem. 31 (12): 1561-1580.
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