Associate Professor of Chemistry
Dr. Gregory joined the faculty at Samford in 2004. Prior to coming to Samford, she held a post-doctoral research position with the United States Department of Agriculture (Catfish Genetics Research Unit) and was a faculty member at Tuskegee University.
Dr. Gregory research focuses on bioremediation of pharmaceutical drugs found in wastewater. Large amounts of pharmaceuticals make their way into the waste stream due to ingested or unused medications. These drugs often have serious effects on river ecosystems. Lignolytic fungi are useful in degradation of these compounds.
Extensive studies of white-rot fungi have shown that three enzymes (manganese peroxidase, laccase, and lignin perioxidase) are responsible for the depolymerization of lignin. Researchers have also shown that white rot fungi are able to degrade Bisphenol A (a raw material used in the chemical synthesis of industrial polymers). These enzymes are important as decay organisms, aiding in the breakdown of logs, leaves, stems and other organic debris. This is an important role of fungi resulting in the recycling of essential nutrients in the biosphere.
Ethinylestradiol is one of many pharmaceutical contaminants found in waste water. Dr. Gregory investigates the degradation of ethinylestradiol by white-rot fungus. Analysis of the degradation products are performed using LC-MS. 1H NMR analysis of the breakdown can be used in the determination of these products produced from the degradation process.
Assistant Provost for Diversity and Intercultural Initiatives
In 2013, Dr. Gregory answered Samford’s call to direct its Office of Diversity and Intercultural Initiatives. Since then this assistant provost has led university-wide efforts in developing, implementing and monitoring programs and processes that promote and sustain diversity, equity and respect throughout Samford University.
Under Dr. Gregory’s leadership the Office of Diversity and Intercultural Initiatives develops wide-ranging initiatives that engage the Samford community in multicultural curricular and co-curricular development. Her office sponsors and/or supports a variety of campus and public opportunities, including heritage celebrations, symposiums, films, convocations, tours, seminars and other events designed to enhance cross-cultural diversity, inclusion and respect. Gregory is instrumental in assisting with fundraising efforts to support students and programming for minority students. Such efforts are widely credited for aiding Samford’s recruitment and retention of under-represented faculty, staff and students while also enriching its campus culture and fellowship.
To further those efforts, Dr. Gregory initiates and administers Diversity Development Grants for faculty, staff and students as well as directing student leadership development programming, including Samford’s IMPACT peer mentoring program and Diversity Ambassadors. Dr. Gregory’s passion for increasing underrepresented groups in STEM careers was the driving force behind the Minority Youth Science Academy. Such initiatives are designed to serve the larger community and southeast region, further promoting the mission, vision and values of Samford University.
Dr. Gregory also serves as the advisor of Delta Sigma Theta Sorority, Inc. and Student Members of the American Chemical Society.
During her spare time Dr. Gregory enjoys spending time with her family; her husband, Shawn, her daughter, Shawnise and her adult step-son, Shawn.
Degrees and Certifications
- B.S., Jackson State University
- Ph.D., Georgia Institute of Technology
- Bosworth, B. G.; Small, B. C.; Gregory, D., Kim, J.; Black, S.; Jerrett, A. Effects of rested-harvest using the anesthetic AQUI-S ™ on channel catfish, Ictalurus punctatus , physiology and fillet quality. Aquaculture2007, 262, 302-318.
- Eldridge, H.C., Milliken, A., Farmer, C., Hampton, A.-S., Wendland, N., Coward, L., Gregory, D.J. and Johnson, C.M. Efficient Remediation of 17alpha-ethinylestradiol by Lentinula edodes (shiitake) Laccase. Biocatalysis and Agricultural Biotechnology. 2017, 10: 64-68.
- Gregory, D.J.; Waldbieser, G.C.; Bosworth, B.G. Cloning and characterization of myogenic regulatory genes in three Ictalurid species. Animal Genetics 2004, 35, 425-430.
- Henderson, P.T.; Jones (Gregory), D.; Hampikian, G.; Kan, Y.; Schuster, G. B. Long distance charge transport in duplex DNA: the phonon-assisted polaron-like hopping mechanims. Proc. Natl. Acad. Sci. U.S.A. 1999, 96, 8353-8358.