Mari Chinn

Professor

  • 919-515-6744
  • D S Weaver Labs 277
  • View CV

Education

Ph.D. 2003

Biosystem Engineering

University of Kentucky

M.S. 2000

Biosystem Engineering

University of Kentucky

B.S. 1998

Biological Systems Engineering

University of California, Davis

Research Description

The defined research program focuses on production of bio-based products, such as enzymes, biochemicals, and biofuels from agro-industrial residues and dedicated biomass crops. Several areas make up the program to address the diversity of renewable resources available and various processing methods that can be applied to generate products and enhance value: --Semi-solid fermentation technology, including solid substrate cultivation and liquid cultivations using solid carbon sources --Enzymatic conversion methods and fermentation for development of effective biomass conversion processes --Hybrid application of thermal and microbial conversion technologies for biofuel production from lignocellulosic biomass --Solvent extraction processes are also being investigated for biomass materials that contain natural colorants, nutraceuticals and other high value compounds. Integrated processing systems, linking crop production and storage practices to development of conversion technology, analytical methods and process model evaluation The projects and activities in these areas have evolved over time, yet the primary goal of establishing functional uses of renewable materials suited to NC for industrial bioproducts that promote sustainability and enhance rural development has remained the same. The biomass studied includes sugar, starch and lignocellulosic crops with divisions of the program developing strongly around sweet sorghum, industrial sweetpotatoes (ISP), perennial grasses, oil seeds, and single carbon gases derived from lignocellulosic materials. The research approach involves both basic and applied objectives, leading to development of processes at various scales, lab to industrial, that often integrate multiple operations within a given system. The program incorporates research direction for and scholarly contributions from research associates, post-docs, graduate students and undergraduate researchers. Education and outreach activities to disseminate advances in the research are also efforts integrated into the program.

Honors and Awards

  • ASABE A. W Farrall Young Educator Award, 2011

Publications

Evidence of mixotrophic carbon-capture by n-butanol-producer Clostridium beijerinckii
Sandoval-Espinola, W. J., Chinn, M. S., Thon, M. R., & Bruno-Barcena, J. M. (2017), Scientific Reports, 7.
Near infrared spectroscopic data handling and chemometric analysis with the R statistical programming language: A practical tutorial
Whitfield, B., & Chinn, M. S. (2017), Journal of Near Infrared Spectroscopy, 25(6), 363–380.
Improvement of acid hydrolysis procedures for the composition analysis of herbaceous biomass
Whitfield, M. B., Chinn, M. S., & Veal, M. W. (2016), Energy & Fuels, 30(10), 8260–8269.
Inoculum optimization of Clostridium beijerinckii for reproducible growth
Sandoval-Espinola, W. J., Chinn, M., & Bruno-Barcena, J. M. (2015), FEMS Microbiology Letters, 362(19).
Metabolic response of Clostridium ljungdahlii to oxygen exposure
Whitham, J. M., Tirado-Acevedo, O., Chinn, M. S., Pawlak, J. J., & Grunden, A. M. (2015), Applied and Environmental Microbiology, 81(24), 8379–8391.
Development of NIRS models to predict composition of enzymatically processed sweetpotato
Diaz, J. T., Veal, M. W., & Chinn, M. S. (2014), Industrial Crops and Products, 59, 119–124.
Interactions between fungal growth, substrate utilization, and enzyme production during solid substrate cultivation of Phanerochaete chrysosporium on cotton stalks
Shi, J., Chinn, M. S., & Sharma-Shivappa, R. R. (2014), Bioprocess and Biosystems Engineering, 37(12), 2463–2473.
Recommendations to mitigate potential sources of error in preparation of biomass sorghum samples for compositional analyses used in industrial and forage applications
Whitfield, M. B., Chinn, M. S., & Veal, M. W. (2014), Bioenergy Research, 7(4), 1561–1570.
Simultaneous saccharification and fermentation of industrial sweetpotatoes for ethanol production and anthocyanins extraction
Diaz, J. T., Chinn, M. S., & Truong, V. D. (2014), Industrial Crops and Products, 62, 53–60. https://doi.org/10.1016/j.indcrop.2014.07.032
The farm to biorefinery continuum: A techno-economic and LCA analysis of ethanol production from sweet sorghum juice
Caffrey, K. R., Veal, M. W., & Chinn, M. S. (2014), Agricultural Systems, 130, 55–66.
Comparative phenotypic analysis and genome sequence of Clostridium beijerinckii SA-1, an offspring of NCIMB 8052
Sandoval-Espinola, W. J., Makwana, S. T., Chinn, M. S., Thon, M. R., Azcarate-Peril, M. A., & Bruno-Barcena, J. M. (2013), Microbiology (Reading, England), 159, 2558–2570.
Generalized Markov graph model: Application to social network analysis
Schuster, B. G., & Chinn, M. S. (2013), Bioenergy Research, 6(2), 416–435.
Hydrolysis and fermentation of sweetpotatoes for production of fermentable sugars and ethanol
Duvernay, W. H., Chinn, M. S., & Yencho, G. C. (2013), Industrial Crops and Products, 42, 527–537.
Advanced oxidation of toluene using Ni-olivine catalysts: part 2. Toluene oxidation kinetics and mechanism of Ni-olivine catalysts synthesized via electroless deposition and thermal impregnation
Smith, V. M., Kolar, P., Boyette, M. D., Chinn, M., Smith, C., Gangadharan, R., & Zhang, G. (2012), Transactions of the ASABE, 55(6), 2273–2283.
Interactions between fungal growth, substrate utilization and enzyme production during shallow stationary cultivation of Phanerochaete chrysosporium on cotton stalks
Shi, J., Sharma-Shivappa, R. R., & Chinn, M. S. (2012), Enzyme and Microbial Technology, 51(1), 1–8.
Processing of materials derived from sweet sorghum for biobased products
Whitfield, M. B., Chinn, M. S., & Veal, M. W. (2012), Industrial Crops and Products, 37(1), 362–375.
A versatile method for preparation of hydrated microbial-latex biocatalytic coatings for gas absorption and gas evolution
Gosse, J. L., Chinn, M. S., Grunden, A. M., Bernal, O. I., Jenkins, J. S., Yeager, C., … Flickinger, M. C. (2012), Journal of Industrial Microbiology & Biotechnology, 39(9), 1269–1278.
Solvent extraction and quantification of capsaicinoids from Capsicum chinense
Chinn, M. S., Sharma-Shivappa, R. R., & Cotter, J. L. (2011), Food and Bioproducts Processing: Transactions of the Institution of Chemical Engineers, Part C., 89(4C), 340–345.
Extraction of anthocyanins from industrial purple-fleshed sweetpotatoes and enzymatic hydrolysis of residues for fermentable sugars
Bridgers, E. N., Chinn, M. S., & Truong, V. D. (2010), Industrial Crops and Products, 32(3), 613–620. https://doi.org/10.1016/j.indcrop.2010.07.020
Production of biofuels from synthesis gas using microbial catalysts
Tirado-Acevedo, O., Chinn, M. S., & Grunden, A. M. (2010), Advances in Applied Microbiology, 70, 57–92.
Effect of microbial pretreatment on enzymatic hydrolysis and fermentation of cotton stalks for ethanol production
Shi, J., Sharma-Shivappa, R. R., Chinn, M., & Howell, N. (2009), Biomass and Bioenergy, 33(1), 88–96. https://doi.org/10.1016/j.biombioe.2008.04.016
Ethanol and acetate production by Clostridium ljungdahlii and Clostridium autoethanogenum using resting cells
Cotter, J. L., Chinn, M. S., & Grunden, A. M. (2009), Bioprocess and Biosystems Engineering, 32(3), 369–380. https://doi.org/10.1007/s00449-008-0256-y
Influence of process parameters on growth of Clostridium ljungdahlii and Clostridium autoethanogenum on synthesis gas
Cotter, J. L., Chinn, M. S., & Grunden, A. M. (2009), Enzyme and Microbial Technology, 44(5), 281–288. https://doi.org/10.1016/j.enzmictec.2008.11.002
Microbial pretreatment of cotton stalks by submerged cultivation of Phanerochaete chrysosporium
Shi, J., Sharma-Shivappa, R. R., & Chinn, M. S. (2009), Bioresource Technology, 100(19), 4388–4395. https://doi.org/10.1016/j.biortech.2008.10.060
Influence of moisture content and cultivation duration on Clostridium thermocellum 27405 end-product formation in solid substrate cultivation on Avicel
Chinn, M. S., Nokes, S. E., & Strobel, H. J. (2008), Bioresource Technology, 99(7), 2664–2671. https://doi.org/10.1016/j.biortech.2007.04.052
Microbial pretreatment of cotton stalks by solid state cultivation of Phanerochaete chrysosporium
Shi, J., Chinn, M. S., & Sharma-Shivappa, R. R. (2008), Bioresource Technology, 99(14), 6556–6564. https://doi.org/10.1016/j.biortech.2007.11.069
Challenges in quantification of ligninolytic enzymes from Phanerochaete chrysosporium cultivation for pretreatment of cotton stalks
Shi, J., Sharma-Shivappa, R. R., Chinn, M., Dean, R. A., & Shivappa, R. B. (2007), Transactions of the ASABE, 50(6), 2347–2354.
Influence of process conditions on end product formation from Clostridium thermocellum 27405 in solid substrate cultivation on paper pulp sludge
Chinn, M. S., Nokes, S. E., & Strobel, H. J. (2007), Bioresource Technology, 98(11), 2184–2193. https://doi.org/10.1016/j.biortech.2006.08.033
Screening of thermophilic anaerobic bacteria for solid substrate cultivation on lignocellulosic substrates
Chinn, M. S., Nokes, S. E., & Strobel, H. J. (2006), Biotechnology Progress, 22(1), 53–59. https://doi.org/10.1021/bp050163x

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Grants

Nutrient Dynamics and Production of Bioenergy Crops in Swine Effluent Sprayfields in North Carolina 2018
NC Department of Agriculture & Consumer Services(1/01/18 - 9/30/19)
A Study to Determine if the Biofuel Crop Camelina is a Wildlife Attractant (Phase II)
NC Department of Transportation(8/01/17 - 12/31/19)
Nutrient Dynamics and Production of Bioenergy Crops in Swine Effluent Sprayfields in North Carolina 2016-2017
NC Department of Agriculture & Consumer Services(11/30/-1 - 6/30/18)
Biomass Sorghum Variety Evaluation
NC Biotechnology Center(5/01/16 - 11/30/16)
Nutrient Dynamics and Production of Bioenergy Crops in Swine Effluent Sprayfields in North Carolina 2015-2016
NC Department of Agriculture & Consumer Services(1/01/16 - 2/28/17)
Mid-Atlantic Biomass Sorghum Collaborative
US Dept. of Agriculture (USDA) - National Institute of Food and Agriculture(11/30/-1 - 8/31/19)
Ensilage Technologies as Harvest Management Strategies for Bioenergy Feedstocks
NC Department of Agriculture & Consumer Services(1/01/15 - 12/31/17)
Nutrient Dynamics and Production of Bioenergy Crops in Swine Effluent Sprayfields in North Carolina
NC Department of Agriculture & Consumer Services(11/01/14 - 3/31/16)
A Study to Determine if the Biofuel Crop Camelina is a Wildlife Attractant
NC Department of Transportation(8/15/14 - 12/31/17)
Production and Nutrient Dynamics of Bioenergy Crops on Swine Effluent Sprayfields in North Carolina
NC Department of Agriculture & Consumer Services(4/01/14 - 2/28/15)