Fluorescence of dietary porphyrins as a basis for real-time detection of fecal contamination on meat. Ashby, K.D.; Wen, J.; Chowdhury, P.; Casey, T.A.; Rasmussen, M.A.; Petrich, J.W. J. Agric. Food Chem. (2003) 51(11), 3502-3507.

Steady-state and time-resolved spectroscopy of F420 extracted from methanogen cells and its utility as a marker for fecal contamination on meat surfaces. Ashby, K.D.; Casey, T.A.; Rasmussen, M.A.; Petrich, J.W. J. Agric. Food Chem. (2001) 49, 1123-1127.

Effect of pH on the fluorescence and absorption spectra of hypericin in reverse micelles. Chowdhury, P.K.; Ashby, K.D.; Datta, A.; Petrich, J.W. Photochem. Photobiol. (2000) 72(5), 612-618.

Fluorescence Properties of Recombinant Tropomyosin Containing Tryptophan, 5-Hydroxytryptophan, and 7-Azatryptophan.  Das, K.; Ashby, K.D.; Smirnov, A.V.; Reinach, F.C.; Petrich, J.W.; Farah, C.S. Photochem. Photobiol. (1999) 70(5), 719-730.

Temperature Dependence of the Excited-State Intramolecular Proton Transfer Reaction in Hypericin and Hypocrellin. Das, K.; Ashby, K.D.; Wen, J.; Petrich, J.W. J. Phys. Chem. B. (1999) 103, 1581-1585.

Domain Structure of the Staphylococcus aureus Collagen Adhesin.  Rich, R.L.; Demeler, B.; Ashby, K.; Deivanayagam, C.C.S.; Petrich, J.W.; Patti, J.M.; Narayana, S.V.L.; Hššk, M. Biochemistry (1998) 37, 15423-15433.  Note: I performed the time-resolved fluorescence measurements only.

Confirmation of the Excited-State Proton Transfer and Ground-State Heterogeneity in Hypericin by Fluorescence Upconversion. English, D.S.; Das, K.; Ashby, K.D.; Park, J.; Petrich, J.W.; Castner, E.W. Jr. J. Am. Chem. Soc. (1997) 119, 11585-11590.

The Effect of Micelles on the Steady-State and Time-Resolved Fluorescence of Indole, 1-Methylindole, and 3-Methylindole in Aqueous Media. Ashby, K.D., Das, K.; Petrich, J.W. Analytical Chemistry (1997) 69, 1925-1930.