Irwin Donis-Gonzalez, Ph.D

Research

• Extension and outreach, postharvest engineering, management, and treatments.
• Dry and cold chain.
• Drying, cooling, and storage facilities.
• Food transportation, distribution logistics, processing, storage, and the quality and safety of fresh and processed agricultural commodities.
• Machine vision, instrumentation, spectroscopy, Computed Tomography (CT), imaging, and pattern recognition for nondestructive sensing and grading of agricultural produce.

Selected Publications

Donis-González, I.R., Zakharov, F., Bruhn, C.M., Cantwell, M.I., Reid, M.S., Slaughter, D.C. & Kader, A. 2025. Book chapter: Postharvest Technology of Horticultural Crops, 4th Edition. Kader, A., Thompson, J.F. & Salveit M., (ed) – ANR publication 21658. Quality factors and their evaluation, Vol. 4, UC ANR, Davis, Ca. pp. 61.

Suárez-Cáceres G.P., Lokuhitige S., Kaufman N.T., Alghaithy A., Hishaw M.B., Donis-González I.R., Fernández-Cabanás, V.M., & Gross J.A. 2025. Suitability of walnut and pistachio shells as soilless substrates for producing Genovese basil in aquaponic systems. Front. Hortic. 4 (1486312). doi: 10.3389/fhort.2025.1486312.

Anokye-Bempah, L., Styczynski, T., Ristenpart, W.D., & Donis-González, I.R. 2025. A universal color curve for roasted arabica coffee. Scientific Report 15 (24192). doi: https://doi.org/10.1038/s41598-025-06601-w.

Ying, T., Dien, A., Spang, E., Kornbluth, K., & Donis-González, I.R. 2025. Drying performance and quality preservation in Calrose rice paddy (Oryza sativa) using convective zeolite-based desiccant drying. J of the American Society of Agricultural and Biological Engineers (ASABE) 68 (1): 61-70. doi: 10.13031/ja.15897.

Ying, T., Dien, A., Kornbluth, K., Simmons, C.W., Donis-González, I.R., & Spang, E.S. 2024. Energy Performance of Zeolite-Based Drying Bead Desiccants Used to Dry Paddy Rice. ACS Omega 9 (36): 38142-38152. https://doi.org/10.1021/acsomega.4c04153.

Anokye-Bempah, L., Styczynski, T., Teixeira Fernandes, N.A., Gervay-Hague, J., K., Ristenpart, W., & Donis-González, I.R. 2024. How Roast Profile Affects the Dynamics of Titratable Acidity during Coffee Roasting. Scientific Reports 14 (8237). doi: https://doi.org/10.1038/s41598-024-57256-y.

Thompson, J.F., Donis-González, I.R., Rumsey, T., Khorsandi, F. & DiCaprio, E. 2023. Book chapter: Postharvest Technology of Horticultural Crops, 4th Edition . Kader, A., Thompson , J.F. & Salveit M., (ed) – ANR publication 21656. Cooling and Storage, Vol. 2, Davis, Ca. pp. 132.

Kilinya Mayanja, I., & Donis-González, I.R. 2023. Design and optimization of an air distributor for an almond stockpile heated and ambient air dryer (SHAD)-Part 1. Biosystems Engineering 235: 180-188. doi: https://doi.org/10.1016/j.biosystemseng.2023.10.002.

Kilinya Mayanja, I., Coates, M.C., Niederholzer, F., & Donis-González, I.R. 2023. Drying of freshly harvested almonds using a stockpile heated and ambient air dryer(SHAD) with an air distributor-Part 2. Biosystems Engineering 235: 189-201. doi: https://doi.org/10.1016/j.biosystemseng.2023.10.003.

Anokye-Bempah, L., Han, J., Kornbluth, K., Ristenpart, W., & Donis-González, I.R. 2023. The Use of Desiccants for Proper Moisture Preservation in Green Coffee During Storage and Transportation. J of Agriculture and Food Research 11, 100478. Doi: https://doi.org/10.1016/j.jafr.2022.100478.

Crisosto, H.C, Donis-González, I.R., Wang, C.S., & Lampinen, D.B. 2023. Removing English Walnut (Juglans Regia) Ready-to-Use Shelled Walnuts Consumption Barriers. Horticulturae, 9, 891. doi: https://doi.org/10.3390/horticulturae9080891.

Anokye-Bempah, L., Phetpan, K., Slaughter, D.C., & Donis-González, I.R. 2023. Design, calibration, and validation of a green coffee inline moisture content estimation system using Time-domain reflectometry. J of Food Engineering 341 (111342): 1-7.

Dien, A., Momin, Md A., Ying, T., Spang, E.S., Kornbluth, K., & Donis-González, I.R. 2022. Performance Evaluation of a Commercially Available Desiccant-based Seed Drying System (FlexiDry®️) Using Corn Kernels (Zea mays). J of the American Society of Agricultural and Biological Engineers (ASABE) 65 (3): 633-643.

Olenskyja, A.G., Donis-González, I.R, Earles, M.J., & Bornhorst, G.M. 2022. End-to-end prediction of uniaxial compression profiles of apples during in vitro digestion using time-series micro-CT imaging and deep learning. J of Food Engineering 325:111014.

Chungcharoen, T., Donis-González, I.R, Phetpan, K., Udompetaikul, V., Sirisomboon, P., Suwalak, R. 2022. Machine learning-based prediction of nutritional status in oil palm leaves using proximal multispectral images. Computer and Electronics in Agriculture. 198: 107019.

Rotta, N.M., Curry, S., Han, J., Reconco, R., Spang, E.S., Ristenpart, W., & Donis-González, I.R. 2021. A comprehensive analysis of operations and mass flows in postharvest processing of washed coffee. Resources, Conservation and Recycling 170: 105554.

Félix-Palomares, L., & & Donis-González, I.R. 2021. Optimization and Validation of Rancimat Operational Parameters to Determine Walnut Oil Oxidative Stability. Processes 9 (4): 651.

Kilinya Mayanja, I., Coates, M.C., Niederholzer, F., & Donis-González, I.R. 2021. Development of a Stockpile Heated and Ambient Air Dryer (SHAD) for Freshly Harvested Almonds. Applied Engineering in Agriculture. 37(3): 417-425. (doi: 10.13031/aea.14364).

Donis-González, I.R., Bergman, S.M., Sideli, G.M., Slaughter, D.C., & Crisosto, C.H. 2020. Color vision system to assess English walnut (Juglans Regia) kernel pellicle color. Postharvest Biology and Technology 167 (111199): 1-11.

Fields, R. P., Donis-González, I.R., Lampinen, B., & Crisosto, C.H. 2020. Late Maturity and Excess Irrigation Trigger Kernel Darkening in ʻHowardʼ English Walnut (Juglans regia L.) at Harvest, but not in ʻChandlerʼ. J of the American Pomological Society 74 (3): 135-145.

Rady, A.M., Guyer, D.E., Donis-González, I.R., Kirk, W., & Watson, N.J. 2020. A comparison of different optical instruments and machine learning techniques to identify sprouting activity in potatoes during storage. J of Food Measurement and Characterization, 14: 3565-3579.

Kaur, A., Donis-González, I.R, & St. Clair, D.A. 2020. Evaluation of a hand‐held spectrophotometer as an in‐field phenotyping tool for tomato and pepper fruit quality. The Plant Phenome J 3 (1): e20008.

Donis-González, I.R., Valero U.C., Momin, M.A., Kaur A., & Slaughter D.C. Performance evaluation of two commercially available portable spectrometers to non-invasively determine table grape and peach quality attributes. 2020. Agronomy, 10, 148: 1-16.

Olenskyja, A.G., Donis-González, I.R, Bornhorst, G.M. 2020. Nondestructive characterization of structural changes during in vitro gastric digestion of apples using 3D time-series micro-computed tomography. J of Food Engineering 267 (109692): 1-11.

Ortiza, C.M., Vicente, A.R., Fields, R.P. Grillo, F., Labavitch, J.M. Donis-González, I.R, and Crisosto, C.H. 2019. Walnut (Juglans regia L.) kernel postharvest deterioration as affected by pellicle integrity, cultivar and oxygen concentration. Postharvest Biology and Technology 156 (110948): 1-8.

Spang, E.S., Achmon, Y., Donis-González, I.R, Gosliner, W.A., Jablonski-Sheffield, M.P. Momin, M.A., Moreno, L.C., Pace, S.A., Quested, T.E., Winans, K.S., Tomich, T.P. 2019. Food Loss and Waste: Measurement, Drivers, and Solutions. Annual Review of Environment and Resources, 44(13): 13.1–13.40