Tonya Peeples

Affiliate Researcher
Executive Committee Member
Titles and Affiliations
Associate Dean of Equity and Inclusion, College of Engineering
Professor, Chemical Engineering

The Peeples chemical engineering research group carries out biological conversions that offer more sustainable chemical processes. The application of biological systems in carrying out chemical reactions has long been viewed as a sustainable technology due to the mild conditions for processing. The Peeples group is evaluating the evolution of stabilizing adaptations in microbial systems. Knowledge of unique physiological function may enable the engineering of stability in industrial and environmental biocatalysts. We have developed ‘greener’ approaches to synthesize chiral drug precursor molecules.  Such chemo-enzymatic and whole-cell synthesis processes compete favorably over traditional chemical approaches that employ multiple steps with numerous hazardous chemicals. They have employed biphasic process to increase productivity of the biocatalytic systems. Activities include bacterial and fungal transformations as well as enzymatic “bio-resolution” processes. Current research also includes the discovery of unique enzymes for biotransformation as well as the evaluation of molecular interactions that govern protein stability and biofilm formation.

In the News

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Recent Publications

Identifying Barriers to Recruiting Low-Income Students into Engineering Master's Programs

Berdanier, C. G. P., Peeples, T. L., Cohan, C. L., Urbina, J. & Howard-Reed, C., Jun 25 2023, In: ASEE Annual Conference and Exposition, Conference Proceedings.

Research output: Contribution to journalConference articlepeer-review

Sustainable bridges from campus to campus: Summer bridge program implementation across four campuses

Cohan, C. L., Griggs, L. A., Hassler, R. S., Johnson, M., Kagan, M., Freeman, A. L. & Peeples, T. L., Aug 23 2022, In: ASEE Annual Conference and Exposition, Conference Proceedings.

Research output: Contribution to journalConference articlepeer-review

Reimagining Summer Bridge: An Evolution in Best Practices to Support Incoming First-Year Engineering Students

Griggs, L. A., Vanderhoof, C. M., Cohan, C. L., Mattingly, A. & Peeples, T. L., Aug 23 2022, In: ASEE Annual Conference and Exposition, Conference Proceedings.

Research output: Contribution to journalConference articlepeer-review

Sustainable Bridges from Campus to Campus: The Creation and Conduct of Online Synchronous Summer Bridge Programs in 2020

Cohan, C. L., Griggs, L. A., Hassler, R. S., Johnson, M. W., Kagan, M., Butler, P. J. & Peeples, T. L., Jul 26 2021, In: ASEE Annual Conference and Exposition, Conference Proceedings.

Research output: Contribution to journalConference articlepeer-review

Sustainable bridges from campus to campus: Aggregate results for Engineering Ahead Cohorts One to Three (#1525367)

Cohan, C. L., Bandyopadhyay, P. K., Hassler, R. S., Johnson, M. W., Kagan, M., Schmiedekamp, A. M., Shull, P. J., Butler, P. J. & Peeples, T. L., Jun 22 2020, In: ASEE Annual Conference and Exposition, Conference Proceedings. 2020-June, 1302.

Research output: Contribution to journalConference articlepeer-review

A critical review on the potential impacts of neonicotinoid insecticide use: Current knowledge of environmental fate, toxicity, and implications for human health

Thompson, D. A., Lehmler, H. J., Kolpin, D. W., Hladik, M. L., Vargo, J. D., Schilling, K. E., Lefevre, G. H., Peeples, T. L., Poch, M. C., Laduca, L. E., Cwiertny, D. M. & Field, R. W., Jun 2020, In: Environmental Science: Processes and Impacts. 22, 6, p. 1315-1346 32 p.

Research output: Contribution to journalReview articlepeer-review

Professional societies and African American engineering leaders: Paving pathways and empowering legacies

Grant, C. S. & Peeples, T., Sep 1 2018, In: MRS Bulletin. 43, 9, p. 703-709 7 p.

Research output: Contribution to journalArticlepeer-review

Optimization of the 11α-hydroxylation of steroid DHEA by solvent-adapted Beauveria bassiana

Gonzalez, R., Nicolau, F. & Peeples, T. L., Mar 4 2017, In: Biocatalysis and Biotransformation. 35, 2, p. 103-109 7 p.

Research output: Contribution to journalArticlepeer-review

Differentiating Pseudomonas sp. strain ADP cells in suspensions and biofilms using Raman spectroscopy and scanning electron microscopy

Henry, V. A., Jessop, J. L. P. & Peeples, T. L., Feb 2017, In: Analytical and Bioanalytical Chemistry. 409, 5, p. 1441-1449 9 p.

Research output: Contribution to journalArticlepeer-review

Engagement in practice: Increasing the researcher/inclusion staff collaboration culture for inspiration of diverse learners in science technology engineering and mathematics (STEM)

Peeples, T. L., Peterson, T. R., Nyaema, M. K. & Newhall, B., Jun 24 2017, In: ASEE Annual Conference and Exposition, Conference Proceedings. 2017-June

Research output: Contribution to journalConference articlepeer-review

Christine grant... of North Carolina State University

Peeples, T., Bullard, L. & Thorp, L., Jun 1 2016, In: Chemical Engineering Education. 50, 3, p. 161-168 8 p.

Research output: Contribution to journalReview articlepeer-review

Solvent resistance pumps of Pseudomonas putida S12: Applications in 1-naphthol production and biocatalyst engineering

Janardhan Garikipati, S. V. B. & Peeples, T. L., Sep 1 2015, In: Journal of Biotechnology. 210, p. 91-99 9 p.

Research output: Contribution to journalArticlepeer-review

Whole-cell biocatalysis for 1-naphthol production in liquid-liquid biphasic systems

Janardhan Garikipati, S. V. B., McIver, A. M. & Peeples, T. L., 2009, In: Applied and environmental microbiology. 75, 20, p. 6545-6552 8 p.

Research output: Contribution to journalArticlepeer-review

Determining design and scale-up parameters for degradation of atrazine with suspended Pseudomonas sp. ADP in aqueous bioreactors

Biglione, N., Rodgers, V. G. J. & Peeples, T. L., May 2008, In: Biotechnology progress. 24, 3, p. 588-592 5 p.

Research output: Contribution to journalArticlepeer-review

Microbial oxidation of naphthalene to cis-1,2-naphthalene dihydrodiol using naphthalene dioxygenase in biphasic media

McIver, A. M., Garikipati, S. V. B. J., Bankole, K. S., Gyamerah, M. & Peeples, T. L., May 2008, In: Biotechnology progress. 24, 3, p. 593-598 6 p.

Research output: Contribution to journalArticlepeer-review