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ARS Home » Northeast Area » Beltsville, Maryland (BARC) » Beltsville Agricultural Research Center » Food Quality Laboratory » People & Locations » Stephen Delwiche (Steve)
Stephen R Delwiche (Steve) (PhD)
Food Quality Laboratory
Agricultural Engineer

Phone: (301) 504-8450 ext. 236
Fax: (301) 504-9466

(Employee information on this page comes from the REE Directory. Please contact your front office staff to update the REE Directory.)


Publications (Clicking on the reprint icon Reprint Icon will take you to the publication reprint.)
An independent validation reveals the potential to predict Hagberg-Perten falling number using spectrometers Reprint Icon - (Peer Reviewed Journal)
Chen, C., Hu, Y., Li, X., Morris, C., Delwiche, S.R., Carter, A.H., Steber, C.M., Zhang, Z. 2023. An independent validation reveals the potential to predict Hagberg-Perten falling number using spectrometers. The Plant Phenome Journal. 6(1). Article e20070. https://doi.org/10.1002/ppj2.20070.
As the Number Falls, Alternatives Advanced to the Hagberg-Perten Falling Number Method: a Review Reprint Icon - (Peer Reviewed Journal)
Hu, Y., Sjoberg, S.M., Chen, J., Hauvermale, A.L., Morris, C.F., Delwiche, S.R., Cannon, A., Steber, C.M., Zhang, Z. 2022. As the Number Falls, Alternatives Advanced to the Hagberg-Perten Falling Number Method: a Review. Comprehensive Reviews in Food Science and Food Safety. 21(3):2105-2117. https://doi.org/10.1111/1541-4337.12959.
Influences of hydrothermal and pressure treatments of wheat bran on the quality and sensory attributes of whole wheat Chinese steamed bread and pancakes Reprint Icon - (Peer Reviewed Journal)
Ma, F., Lee, Y., Park, E., Luo, Y., Delwiche, S.R., Baik, B.V. 2021. Influences of hydrothermal and pressure treatments of wheat bran on the quality and sensory attributes of whole wheat Chinese steamed bread and pancakes. Journal of Cereal Science. 102. Article 103356. https://doi.org/10.1016/j.jcs.2021.103356.
Does spatial region of interest (ROI) matter in multispectral and hyperspectral imaging of segmented wheat kernels Reprint Icon - (Peer Reviewed Journal)
Delwiche, S.R., Baek, I., Kim, M.S. 2021. Does spatial region of interest (ROI) matter in multispectral and hyperspectral imaging of segmented wheat kernels. Biosystems Engineering. 212:106-114.
Effect of curvature on hyperspectral reflectance images of cereal seed-sized objects Reprint Icon - (Peer Reviewed Journal)
Delwiche, S.R., Baek, I., Kim, M.S. 2021. Effect of curvature on hyperspectral reflectance images of cereal seed-sized objects. Biosystems Engineering. 202: 55-65. https://doi.org/10.1016/j.biosystemseng.2020.11.004.
Sensory and physicochemical properties of whole wheat salted noodles under different preparations of bran Reprint Icon - (Peer Reviewed Journal)
Sim, E., Park, E., Ma, F., Baik, B.V., Fonseca, J.M., Delwiche, S.R. 2020. Sensory and physicochemical properties of whole wheat salted noodles under different preparations of bran. Journal of Cereal Science. 96(1):Article 103112. https://doi.org/10.1016/j.jcs.2020.103112.
On the use of native corn starch as a standard reference material for falling number Reprint Icon - (Peer Reviewed Journal)
Delwiche, S.R., Liang, J. 2020. On the use of native corn starch as a standard reference material for falling Number. Cereal Chemistry. 97(6):1227-1235. https://doi.org/10.1002/cche.10346.
Evaluation of a standard reference material for falling number Reprint Icon - (Peer Reviewed Journal)
Delwiche, S.R., Rausch, S.R., Vinyard, B.T. 2020. Evaluation of a standard reference material for falling number. Cereal Chemistry. https://doi.org/10.1002/cche.10259.
Is it necessary to manage falling number in the field? Reprint Icon - (Peer Reviewed Journal)
Delwiche, S.R., Tao, H., Breslauer, R., Vinyard, B.T., Rausch, S.R. 2020. Is it necessary to manage falling number in the field? Agrosystems, Geosciences & Environment. https://doi.org/10.1002/agg2.20014.
Compressive strength of Super Soft wheat endosperm Reprint Icon - (Peer Reviewed Journal)
Delwiche, S.R., Morris, C.F., Kiszonas, A. 2019. Compressive strength of Super Soft wheat endosperm. Journal of Cereal Science. https://doi.org/10.1016/j.jcs.2019.102894.
A new correction function for falling number at non-sea level conditions - (Trade Journal)
Delwiche, S.R. 2019. A new correction function for falling number at non-sea level conditions. Cereal Foods World. 64:1-2.
Estimating percentages of fusarium-damaged kernels in hard wheat by near-infrared hyperspectral imaging - (Peer Reviewed Journal)
Delwiche, S.R., Torres Rodriguez, I., Rausch, S.R., Graybosch, R.A. 2019. Estimating percentages of fusarium-damaged kernels in hard wheat by near-infrared hyperspectral imaging. Journal of Cereal Science. 87:18-24.
Grain - (Book / Chapter)
Delwiche, S.R. 2021. Grains. In: Ciurczak, E.W., Igne, B., Workman, J., Burns, D.A., editors. Handbook of Near-Infrared Analysis. 4th edition. Boca Raton, FL: CRC Press. p. 627-642.
Hyperspectral fluorescence imaging for shelf life evaluation of fresh-cut Bell and Jalapeno Pepper - (Peer Reviewed Journal)
Delwiche, S.R., Stommel, J.R., Kim, M.S., Esquerre, C. 2019. Hyperspectral fluorescence imaging for shelf life evaluation of fresh-cut Bell and Jalapeno Pepper. Scientia Horticulturae. 246:749-758.
Evaluation of a collaborative study through outlier detection and calculation of precision figures of merit: SAS code - (Other)
Delwiche, S.R. 2018. Evaluation of a collaborative study through outlier detection and calculation of precision figures of merit: SAS code. AACC International. https://methods.aaccnet.org.
Occurrence of 'super soft' wheat kernel texture in hexaploid and tetraploid wheats - (Abstract Only)
Falling number of soft wheat wheat by near-infrared spectroscopy: a challenge revisited - (Peer Reviewed Journal)
Delwiche, S.R., Steber, C.M. 2018. Falling number of soft wheat wheat by near-infrared spectroscopy: a challenge revisited. Cereal Chemistry. 95(3):469-477.
Correction of wheat meal falling number to a common barometric pressure at simulated laboratory elevations of 0 to 1500 meters - (Peer Reviewed Journal)
Delwiche, S.R., Rausch, S.R., Vinyard, B.T. 2018. Correction of wheat meal falling number to a common barometric pressure at simulated laboratory elevations of 0 to 1500 meters. Cereal Chemistry. 95(3):428-435.
Near-infrared hyperspectral imaging of blends of conventional and waxy hard wheats - (Peer Reviewed Journal)
Delwiche, S.R., Qin, J., Graybosch, R.A., Rausch, S.R., Kim, M.S. 2018. Near-infrared hyperspectral imaging of blends of conventional and waxy hard wheats. Journal of Spectral Imaging. 7(a2):1-13.
Spatial assessment of soluble solid contents on apple slices using hyperspectral imaging - (Peer Reviewed Journal)
Mo, C., Kim, M.S., Kim, G., Lim, J., Delwiche, S.R., Chao, K., Lee, H., Cho, B. 2017. Spatial assessment of soluble solid contents on apple slices using hyperspectral imaging. Biosystems Engineering. 159:10-21.
Continued work to develop a low-cost sensor to detect plastic contamination in seed cotton at the gin - (Proceedings)
Whitelock, D.P., Armijo, C.B., Delwiche, S.R., Kim, M.S., Hughs, S.E. 2017. Continued work to develop a low-cost sensor to detect plastic contamination in seed cotton at the gin. National Cotton Council Beltwide Cotton Conference, January 4-6, 2017, Dallas, TX. p. 389-397.
Line-scan hyperspectral imaging techniques for food and agricultural applications - (Peer Reviewed Journal)
Qin, J., Kim, M.S., Chao, K., Chan, D.E., Delwiche, S.R., Cho, B. 2017. Line-scan hyperspectral imaging techniques for food and agricultural applications. Applied Sciences. 7(20):125.
Falling number sampling variation within trucks at first point of sale - (Peer Reviewed Journal)
Delwiche, S.R., Vinyard, B.T. 2017. Falling number sampling variation within trucks at first point of sale. Cereal Chemistry. 94(3):480-484.
Line-scan Raman imaging and spectroscopy platform for surface and subsurface evaluation of food safety and quality - (Peer Reviewed Journal)
Qin, J., Kim, M.S., Chao, K., Schmidt, W.F., Cho, B., Delwiche, S.R. 2017. Line-scan Raman imaging and spectroscopy platform for surface and subsurface evaluation of food safety and quality. Journal of Food Engineering. 198:17-27.
Development of a prototype sensor to detect plastic contamination in seed cotton at the gin - (Abstract Only)
Whitelock, D.P., Armijo, C.B., Delwiche, S.R., Kim, M.S., Hughs, S.E., Byler, R.K. 2016. Development of a prototype sensor to detect plastic contamination in seed cotton at the gin. ASABE Annual International Meeting, July 17-20, 2016, Orlando, FL. Presentation only. Paper No. 162461827.
Surface and subsurface inspection of food safety and quality using a line-scan Raman system - (Proceedings)
Qin, J., Kim, M.S., Chao, K., Schmidt, W.F., Delwiche, S.R. 2016. Surface and subsurface inspection of food safety and quality using a line-scan Raman system. ASABE Annual International Meeting, St. Joseph, MI. ASABE Paper No. 162460315.
Penetration depth measurement of near-infrared hyperspectral imaging light for milk powder - (Peer Reviewed Journal)
Huang, M., Kim, M.S., Chao, K., Qin, J., Mo, C., Esquerre, C., Delwiche, S.R., Zhu, Q. 2016. Penetration depth measurement of near-infrared hyperspectral imaging light for milk powder. Sensors. 16(4):441.
Quantitative analysis of melamine in milk powders using near-infrared hyperspectral imaging and band ratio - (Peer Reviewed Journal)
Huang, M., Kim, M.S., Delwiche, S.R., Chao, K., Qin, J., Mo, C., Esquerre, C., Zhu, Q. 2016. Quantitative analysis of melamine in milk powders using near-infrared hyperspectral imaging and band ratio. Journal of Food Engineering. 181:10-19.
Analysis of grain quality at receival - (Book / Chapter)
Delwiche, S.R., Miskelly, D. 2016. Analysis of grain quality at receival. In: Wrigley, C., Batey, I., Miskelly, D. Cereal Grains: Assessing and Managing Quality. 2nd edition. Duxford, UK: Woodhead. p.513-570.
Advances in the identification of adulterated cereals and cereal products - (Book / Chapter)
Delwiche, S.R. 2016. Advances in the identification of adulterated cereals and cereal products. In: Downey, G., editor. Advances in Food Authenticity Testing. Duxford, UK: Woodhead. p. 491-518.
Calculator to determine moister content - (Other)
Delwiche, S.R., Gelroth, J. 2015. Calculator to determine moister content. AACC International. Available: http://methods.aaccnet.org/default.aspx.
Binary mixtures of waxy wheat and conventional wheat as measured by nir reflectance - (Peer Reviewed Journal)
Delwiche, S.R., Graybosch, R.A. 2016. Binary mixtures of waxy wheat and conventional wheat as measured by nir reflectance. Talanta. 146:496-506.
Basics of spectroscopic analysis - (Book / Chapter)
Delwiche, S.R. 2015. Basics of spectroscopic analysis. In: Park, B., Lu, R., editors. Hyperspectral Imaging Technology in Food and Agriculture. New York, NY: Springer. p. 57-79.
Repeatability precision of the falling number procedure under standard and modified methodologies - (Peer Reviewed Journal)
Delwiche, S.R., Vinyard, B.T., Bettge, A.D. 2015. Repeatability precision of the falling number procedure under standard and modified methodologies. Cereal Chemistry. 92(2):177-184.
Detection of cracks on tomatoes using hyperspectral near-infrared reflectance imaging system - (Peer Reviewed Journal)
Lee, H., Kim, M.S., Jeong, D., Delwiche, S.R., Chao, K., Cho, B. 2014. Detection of cracks on tomatoes using hyperspectral near-infrared reflectance imaging system. Journal of Food Engineering. 14(10):18837-18850.
Classification of the waxy condition of durum wheat by near infrared reflectance spectroscopy using wavelets and a genetic algorithm - (Peer Reviewed Journal)
Lavine, B.K., Mirjanka, N., Delwiche, S.R. 2014. Classification of the waxy condition of durum wheat by near infrared reflectance spectroscopy using wavelets and a genetic algorithm. Microchemical Journal. 117:178-182.
Integration of independent component analysis with near infrared spectroscopy for evaluation of rice freshness - (Peer Reviewed Journal)
Chuang, Y., Chen, S., Delwiche, S.R., Lo, Y., Tsai, C., Yang, I. 2014. Integration of independent component analysis with near infrared spectroscopy for evaluation of rice freshness. Journal of Cereal Science. 60:238-242.
Measurement of blend concentrations of conventional and waxy hard wheats using NIR spectroscopy - (Peer Reviewed Journal)
Delwiche, S.R., Graybosch, R.A. 2014. Measurement of blend concentrations of conventional and waxy hard wheats using NIR spectroscopy. Cereal Chemistry. 91(4):358-365.
Hyperspectral near-infrared imaging for the detection of physical damages of pear - (Peer Reviewed Journal)
Leewang-Hee, Kim, M.S., Lee, H., Delwiche, S.R., Bae, H., Kim, D., Cho, B. 2014. Hyperspectral near-infrared imaging for the detection of physical damages of pear. Journal of Food Engineering. 130:1-7.
Multiple view image analysis of freefalling U.S. wheat grains for damage assessment - (Peer Reviewed Journal)
Delwiche, S.R., Yang, I., Graybosch, R.A. 2013. Multiple view image analysis of freefalling U.S. wheat grains for damage assessment. Computers and Electronics in Agriculture. 98:62-73.
Limitations of single kernel near-infrared hyperspectral imaging of soft wheat for milling quality - (Peer Reviewed Journal)
Delwiche, S.R., Souza, E.J., Kim, M.S. 2013. Near-infrared hyperspectral imaging for milling quality of soft wheat. Biosystems Engineering. 115:260-273.
Inspection of fecal contamination on strawberries using line-scan led-induced fluorescence imaging techniques - (Abstract Only)
Chuang, Y., Yang, C., Kim, M.S., Delwiche, S.R., Lo, Y., Chen, S., Chan, D.E. 2012. Inspection of fecal contamination on strawberries using line-scan led-induced fluorescence imaging techniques. [abstract].
Inspection of fecal contamination on strawberries using line-Scan LED-induced fluorescence imaging techniques - (Proceedings)
Chuang, Y., Yang, C., Kim, M.S., Delwiche, S.R., Chen, S., Chan, D.E. 2012. Inspection of fecal contamination on strawberries using line-Scan LED-induced fluorescence imaging techniques. ASABE Annual International Meeting. Paper No. 21337179.
Development of the classification model for defect and damage assessment of the freefalling cereal grains using single channel three simultaneous images - (Proceedings)
Yang, I., Delwiche, S.R., Lo, Y. 2012. Development of the classification model for defect and damage assessment of the freefalling cereal grains using single channel three simultaneous images. Proceedings of SPIE. 83690E:9.
Visible to SWIR hyperspectral imaging for produce safety and quality evaluation - (Peer Reviewed Journal)
Kim, M.S., Delwiche, S.R., Chao, K., Lefcourt, A.M., Chan, D.E. 2012. Visible to SWIR hyperspectral imaging for produce safety and quality evaluation. Sensing and Instrumentation for Food Quality and Safety. 5(5):155-164.
Influence of instrument rigidity and specimen geometry on calculations of compressive strength properties of wheat endosperm - (Peer Reviewed Journal)
Delwiche, S.R., Morris, C.F., Mabille, F., Abecassis, J. 2012. Influence of instrument rigidity and specimen geometry on calculations of compressive strength properties of wheat endosperm. Cereal Chemistry. 89(1):24-29.
Infra-red imaging technology for detection of bruise damages of Shingo pear - (Proceedings)
Cho, B., Kim, M.S., Lee, H., Delwiche, S.R. 2011. Infra-red imaging technology for detection of bruise damages of Shingo pear.. Proceedings of SPIE. 8027: 1-7.
Hyperspectral near-infrared reflectance imaging for detection of defect tomatoes - (Proceedings)
Lee, H., Kim, M.S., Jeong, D., Chao, K., Cho, B., Delwiche, S.R. 2011. Hyperspectral near-infrared reflectance imaging for detection of defect tomatoes. Proceedings of SPIE. 8027:1-9.
Collaborative analysis of wheat endosperm compressive material properties - (Peer Reviewed Journal)
Morris, C.F., Delwiche, S.R., Bettge, A.D., Mabille, F., Abecassis, J., Pitts, M.J., Dowell, F.E., Deroo, C., Pearson, T.C. 2011. Collaborative analysis of wheat endosperm compressive material properties. Cereal Chemistry. 88:391-396.
Fusarium damage assessment in wheat kernels by Vis/NIR hyperspectral imaging - (Peer Reviewed Journal)
Delwiche, S.R., Kim, M.S., Dong, Y. 2011. Fusarium damage assessment in wheat kernels by Vis/NIR hyperspectral imaging. Sensing and Instrumentation for Food Quality and Safety. 5:63-71.
Use of airborne hyperspectral imagery to map soil parameters in tilled agricultural fields - (Peer Reviewed Journal)
Hively, W.D., McCarty, G.W., Reeves III, J.B., Lang, M.W., Osterling, R.A., Delwiche, S.R. 2011. Use of airborne hyperspectral imagery to map soil parameters in tilled agricultural fields. Applied and Environmental Soil Science. DOI: 10.1155/2011/358193.
Starch waxiness in hexaploid wheat (Triticum aestivum L.) by NIR reflectance spectroscopy - (Peer Reviewed Journal)
Delwiche, S.R., Graybosch, R.A., St Amand, P., Bai, G. 2011. Starch waxiness in hexaploid wheat (Triticum aestivum L.) by NIR reflectance spectroscopy. Journal of Agricultural and Food Chemistry. 59:4002-4008.
Line-scan hyperspectral imaging platform for agro-food safety and quality evaluation: System enhancement and characterization - (Peer Reviewed Journal)
Kim, M.S., Chao, K., Chan, D.E., Jun, W., Lefcourt, A.M., Delwiche, S.R., Lee, K. 2011. Line-scan hyperspectral imaging platform for agro-food safety and quality evaluation: System enhancement and characterization. Transactions of the ASABE. 54(2):703-711.
Hyperspectral and Multispectral Imaging Technique for Food Quality and Safety Evaluation - (Book / Chapter)
Kim, M.S., Chao, K., Chan, D.E., Yang, C., Lefcourt, A.M., Delwiche, S.R. 2011. Hyperspectral and multispectral imaging technique for food quality and safety evaluation. In: Cho, Y., Kang, S. editors. Emerging Technologies for Food Quality and Food Safety Inspection. New York, N.Y.: CRC Press. p. 207-234.
Hyperspectral Imaging Technologies for Nondestructive Agro-Food Evaluation - (Proceedings)
Kim, M.S., Chao, K., Chan, D.E., Yang, C., Lefcourt, A.M., Delwiche, S.R. 2010. Hyperspectral Imaging Technologies for Nondestructive Agro-Food Evaluation. International Symposium on New Sensing Technology for Measuring Agro-Food Quality Proceedings. p. 57-71.
Damage and quality assessment in wheat by NIR hyperspectral imaging - (Proceedings)
Delwiche, S.R., Kim, M.S., Dong, Y. 2010. Damage and quality assessment in wheat by NIR hyperspectral imaging. Proceedings of SPIE. 767607:8.
A graphical method to evaluate spectral preprocessing in multivariate regression calibrations: example with Savitzky-Golay filters and partial least squares regression - (Peer Reviewed Journal)
Delwiche, S.R., Reeves III, J.B. 2010. A graphical method to evaluate spectral preprocessing in multivariate regression calibrations: example with Savitzky-Golay filters and partial least squares regression. Applied Spectroscopy. 64(1):73-82.
Analysis of grain quality at receival - (Book / Chapter)
Delwiche, S.R. 2010. Analysis of grain quality at receival. In: Wrigley, C. and Batey, I., editors. Cereal Grains: Assessing and Managing Quality. Woodhead Food Series No. 190, Part 3. Cambridge, UK: Woodhead Publishing Limited. p. 267-310.
Determination of Wheat Kernel Black Point Damage using Hyper-Spectral Imaging - (Peer Reviewed Journal)
Yang, I., Delwiche, S.R., Kim, M.S., Tsai, C., Lo, Y. 2009. Determination of wheat kernel black point damage using hyper-spectral imaging. Journal of Agricultural Machinery. 18:29-44.
Hyperspectral imaging for detection of black tip damage in wheat kernels - (Proceedings)
Delwiche, S.R., Yang, I., Kim, M.S. 2009. Hyperspectral imaging for detection of black tip damage in wheat kernels. International Society for Optical Engineering. 7315(1). Available: http://spiedl.aip.org/dbt/dbt.jsp?KEY=PSISDG&Volume=7315&Issue=1
Feasibility of FT-Raman spectroscopy in rapid and routine screening for deoxynivalenol in wheat and barley - (Peer Reviewed Journal)
Liu, Y., Delwiche, S.R., Dong, Y. 2009. Feasibility of FT-Raman spectroscopy in rapid and routine screening for deoxynivalenol in wheat and barley. Journal of Food Additives & Contaminants. Part A. 26(10):1396-1401.
Enhancement of Fusarium Head Blight Detection in Free-Falling Wheat Kernels Using a Bichromatic Pulsed LED Design - (Peer Reviewed Journal)
Yang, I., Delwiche, S.R., Chen, S., Lo, Y. 2009. Enhancement of Fusarium Head Blight Detection in Free-Falling Wheat Kernels Using a Bichromatic Pulsed LED Design. Optical Engineering. 48(2):023602-1-10.
Selecting and Sorting Waxy Wheat Kernels Using Near-Infrared Spectroscopy - (Peer Reviewed Journal)
Dowell, F.E., Maghirang, E.B., Graybosch, R.A., Berzonsky, W.A., Delwiche, S.R. 2009. Selecting and Sorting Waxy Wheat Kernels Using Near-Infrared Spectroscopy. Cereal Chemistry. 86(3):251-255.
Two-dimensional correlation analysis of near-infrared spectral intensity variations of ground wheat - (Peer Reviewed Journal)
Liu, Y., Delwiche, S.R., Graybosch, R.A. 2009. Two-dimensional correlation analysis of near-infrared spectral intensity variations of ground wheat. Near Infrared Spectroscopy Journal. 17(1):41-50.
ENHANCEMENT OF FUSARIUM HEAD BLIGHT DETECTION IN SINGLE FREE-FALLING WHEAT KERNEL USING A MULTI-SPECTRAL INSPECTON SYSTEM - (Proceedings)
Yang, I., Delwiche, S.R., Chen, S., Lo, Y.M. Enhancement of fusarium head blight detection in single free-falling wheat kernel using a multi-spectral inspecton system. Proceedings of the American Society of Agricultural and Biological Engineers International (ASABE). June 29-July 2, 2008.
CORRELATION ANALYSIS OF HYPERSPECTRAL IMAGERY FOR MULTISPECTRAL WAVELENGTH SELECTION FOR DETECTION OF DEFECTS ON APPLES - (Peer Reviewed Journal)
Lee, K., Kang, S., Delwiche, S.R., Kim, M.S., Noh, S. 2008. Correlation analysis of hyperspectral imagery for multispectral wavelength selection for detection of defects on apples. Sensing and Instrumentation for Food Quality and Safety. 2(2):90-96.
SOLUBLE SOLIDS AND SIMPLE SUGARS MEASUREMENT IN INTACT MANGO USING NEAR INFRARED SPECTROSCOPY - (Peer Reviewed Journal)
Delwiche, S.R., Mekwatanakarn, W., Wang, C.Y. 2008. Soluble solids and simple sugars measurement in intact mango using near infrared spectroscopy. HortTechnology. 18(3):325-544.
HIGH-SPEED BICHROMATIC INSPECTION OF WHEAT KERNELS FOR MOLD AND COLOR CLASS USING HIGH-POWER PULSED LEDS - (Peer Reviewed Journal)
Delwiche, S.R. 2008. High-speed bichromatic inspection of wheat kernels for mold and color class using high-power pulsed leds. Sensing and Instrumentation for Food Quality and Safety. 2(2):103-110.
SAS Partial Least Squares (PLS) for Discriminant Analysis - (Peer Reviewed Journal)
Reeves III, J.B., Delwiche, S.R. 2008. Sas partial least squares (pls) for discriminant analysis. Near Infrared Spectroscopy Journal. 16:31-38.
PLS Program and Documentation - (Other)
Reeves III, J.B., Delwiche, S.R. 2008. PLS program for discriminant analysis and documentation. http://www.impublications.com/nir/abstract/J16_0031.
OPTICAL CHARACTERIZATION OF FREE-FALLING MOLD-DAMAGED WHEAT KERNEL - (Proceedings)
Delwiche, S.R. 2007. Optical characterization of free-falling mold-damaged wheat kernel. Proceedings of SPIE. V.6761.
Separating waxy from wild-type kernels using an automated NIR sorting system - (Abstract Only)
Dowell, F.E., Graybosch, R.A., Berzonsky, W.A., Delwiche, S.R. 2007. Separating waxy from wild-type kernels using an automated NIR sorting system. Meeting Abstract.
ASSESSING GLYCININ (11S) AND BETA-CONGLYCININ (7S) FRACTIONS OF SOYBEAN STORAGE PROTEIN BY NEAR-INFRARED SPECTROSCOPY - (Peer Reviewed Journal)
Delwiche, S.R., Pordesimo, L.O., Panthee, D., Pantalone, V.R. 2007. Assessing glycinin (11s) and beta-conglycinin (7s) fractions of soybean storage protein by near-infrared spectroscopy. Journal of the American Oil Chemists' Society. 84(12):1107-1115.
ENHANCEMENTS IN COLOR-BASED DETECTION OF MOLD-DAMAGED WHEAT KERNELS - (Abstract Only)
Delwiche, S.R. 2007. Enhancements in color-based detection of mold-damaged wheat kernels [abstract]. American Association of Cereal Chemists Meetings. Available: http://www.aaccnet.org/meetings/2007/abstract/O07ma22.htm.
IMPROVEMENTS IN OPTICAL SORTING OF MOLD-DAMAGED WHEAT - (Proceedings)
Delwiche, S.R. 2006. Improvements in optical sorting of mold-damaged wheat. Proceedings of SPIE. 6381:63810A.
OPTICAL PROPERTIES OF MOLD-DAMAGED FREE-FALLING SINGLE KERNEL WHEAT AT THE MILLISECOND LEVEL - (Abstract Only)
Delwiche, S.R. 2006. Optical properties of mold-damaged free-falling single kernel wheat at the millisecond level [abstract]. American Association of Cereal Chemists Meeting. Available: http://www.aaccnet.org/meetings/2006/abstracts/O-84.htm.
LEAST-SQUARES MEANS MULTIPLE COMPARISON TESTING OF REFERENCE VERSUS PREDICTED RESIDUALS FOR EVALUATION OF PARTIAL LEAST SQUARES (PLS) SPECTRAL CALIBRATIONS - (Peer Reviewed Journal)
Reeves III, J.B., Delwiche, S.R., Reeves, V.B. 2006. Least-squares means multiple comparison testing of reference versus predicted residuals for evaluation of partial least squares (pls) spectral calibrations. Near Infrared Spectroscopy Journal. 14:371-377.
MEASUREMENT OF INORGANIC PHOSPHORUS IN SOYBEANS WITH NEAR-INFRARED SPECTROSCOPY - (Peer Reviewed Journal)
Delwiche, S.R., Pordesimo, L.O., Scaboo, A.M., Pantalone, V.R. 2006. Measurement of inorganic phosphorus in soybeans with near-infrared spectroscopy. Journal of Agricultural and Food Chemistry. 54(19):6951-6956.
SINGLE KERNEL NEAR-INFRARED ANALYSIS OF TETRAPLOID (DURUM) WHEAT FOR CLASSIFICATION OF THE WAXY CONDITION - (Peer Reviewed Journal)
Delwiche, S.R., Graybosch, R.A., Hansen, L.E., Souza, E., Dowell, F. 2006. Single kernel near-infrared analysis of tetraploid (durum) wheat for classification of the waxy condition. Cereal Chemistry. 83(3):287-292.
TOWARD BICHROMATIC OPTICAL SORTING OF SCAB-DAMAGED WHEAT - (Abstract Only)
Delwiche, S.R., Pearson, T.C., Brabec, D.L. 2005. Toward bichromatic optical sorting of scab-damaged wheat. In: Proceedings of the 2005 National Fusarium Had Blight Forum, December 11-13, 2005, Milwaukee, WI. East Lansing, Michigan State University. p. 176.
HIGH-SPEED BICHROMATIC SORTING OF FUSARIUM-DAMAGED WHEAT KERNELS - (Abstract Only)
Delwiche, S.R., Pearson, T.C., Brabec, D.L. 2005. High-speed bichromatic sorting of fusarium-damaged wheat kernels. AACC Pacific Rim Conference Abstracts. Available: http://www.aaccnet.org/meetings/2005/abstracts/o-64.htm.
NEAR-INFRARED (NIR) RESEARCH AT THE BELTSVILLE AGRICULTURAL RESEARCH CENTER - (Popular Publication)
Reeves III, J.B., Delwiche, S.R., Daughtry, C.S., Luthria, D.L. 2005. Near-infrared (nir) research at the beltsville agricultural research center. NIR News. 1616:9-12, part 1 split into two issues. 1618, part 2. p. 12-13.
CHAPTER 32. CEREAL FOODS. - (Book / Chapter)
Delwiche, S.R. 2006. Chapter 32: Cereal Foods. In: Horowitz, W., Latimre, G.W., Official Methods of Analysis of AOAC International, 18th Edition. In: Horowitz, W., Latimer, G.W. Gaithersburg, MD. AOAC International. 32.1-32.61.
PREDICTION OF SDS SEDIMENTATION VOLUMES FOR WHEAT VIA FT-NIR AND FT-RAMAN SPECTROSCOPY - (Proceedings)
Himmelsbach, D.S., De Haseth, J.A., Delwiche, S.R. 2005. Prediction of SDS sedimentation volumes for wheat via FT-NIR and FT-Raman spectroscopy. Proceedings of the United States-Japan Cooperative Program in Natural Resources Food and Agriculture Panel. 34th Annual Meeting, Susono, Shizzoka, Japan. pp. 74-77.
LEAST-SQUARES MEANS MULTIPLE COMPARISON TESTING OF ACTUAL VERSUS PREDICTED RESIDUALS FOR EVALUATION OF PARTIAL LEAST SQUARES (PLS) SPECTRAL CALIBRATIONS - (Abstract Only)
Reeves III, J.B., Delwiche, S.R., Palmquist, D.E., Reeves, V.B. 2005. Least-squares means multiple comparison testing of actual versus predicted residuals for evaluation of partial least squares (pls) spectral calibrations [abstract].
HIGH-SPEED OPTICAL SORTING OF SOFT WHEAT FOR REDUCTION OF DEOXYNIVALENOL - (Peer Reviewed Journal)
Delwiche, S.R., Pearson, T.C., Brabec,, D.L. 2005. High-speed optical sorting of soft wheat for reduction of deoxynivalenol. Plant Disease Journal. 89(11):1214-1219.
UP AND COMING METHODS AND INSTRUMENTATION FOR END-USE WHEAT QUALITY MEASUREMENTS - (Proceedings)
Delwiche, S. R. 2005. Up and Coming Methods and Instrumentation for End-Use Wheat Quality Measurements. In: Chung, O.K., Lookhart, G.L., editors. Standing on the Shoulders of Giants-What We Have Learned and Where We Are Going. Proceedings of Third Int'l. Wheat Quality Conference. May 22-26,2005, Manhattan Kansas, p. 283-289.
WAVELENGTH SELECTION FOR MONOCHROMATIC AND BICHROMATIC SORTING OF FUSARIUM-DAMAGED WHEAT - (Peer Reviewed Journal)
Delwiche, S.R., Gaines, C.S. 2005. Wavelength selection for monochromatic and bichromatic sorting of fusarium-damaged wheat. Applied Engineering in Agriculture. 21(4):681-688.
PARTIAL LEAST SQUARES REGRESSION OF SPECTRAL DATA, WITH VALIDATION, USING SAS MACRO LANGUAGE - (Other)
Delwiche, S.R. 2005. Partial least squares regression of spectral data, with validation, using SAS macro language. NIR Publications Website (SAS Section) http://www.nirpubications.om/software/index.html.
HIGH-SPEED OPTICAL SORTING OF SOFT RED WINTER WHEAT FOR REMOVAL OF FUSARIUM-DAMAGED KERNELS - (Proceedings)
Delwiche, S.R., Pearson, T.C., Gaines, C.S. 2004. High-speed optical sorting of soft red winter wheat for removal of Fusarium-damaged kernels. Second International Symposium on Fusarium Head Blight Proceedings. Dec. 11-15, 2004, Orlando, Florida. p. 397.
COLLABORATIVE STUDIES FOR CEREALS ANALYSIS - (Trade Journal)
Delwiche, S.R., Palmquist, D.E., Lynch, J. M. 2005. Collaborative Studies for Cereals Analysis. Cereal Foods World. 50:9-17.
OPTICAL RECOGNITION OF SCAB-DAMAGED WHEAT - (Abstract Only)
Delwiche, S.R., Pearson, T.C. 2004. Optical recognition of scab-damaged wheat. AACC Annual Meeting Abstracts. Available: http://www.aaccnet.org/meetings/2004/abstracts/a04ma47.htm.
THE EFFECT OF SPECTRAL PRETREATMENTS ON THE PLS MODELING OF AGRICULTURAL PRODUCTS - (Peer Reviewed Journal)
Delwiche, S.R., Reeves III, J.B. 2004. The effect of spectral pretreatments on the pls modeling of agricultural products. Near Infrared Spectroscopy Journal. 12:177-182.
USING SAS FOR PLS CALIBRATIONS OF SPECTROSCOPIC DATA - (Popular Publication)
Reeves III, J.B., Delwiche, S.R. 2004. Using the Statistical Analysis System for partial least squares calibrations of spectroscopic data. NIR news (Near Infrared Reflectance News). 15(3):10-13.
DETECTION OF SCAB DAMAGED HARD RED SPRING WHEAT KERNELS BY NEAR-INFRARED REFLECTANCE - (Peer Reviewed Journal)
Delwiche, S.R., Hareland, G.A. 2004. Detection of scab damaged hard red spring wheat kernels by near-infrared reflectance. Cereal Chemistry. Vol.81(5):643-649.
DETECTION OF SCAB-DAMAGED WHEAT KERNELS BY NEAR-INFRARED REFLECTANCE - (Abstract Only)
Delwiche, S.R., Hareland, G.A. 2003. Detection of scab-damaged wheat kernels by near-infrared reflectance. Proceedings of the 2003 National Fusarium Head Blight Forum (S.M. Canty, J. Lewis, and R.W. Ward, eds.), Dec. 13-15, 2003, Bloomington, MN. East Lansing: Michigan State University, p. 186.
SAS MACRO LANGUAGE PROGRAM FOR PARTIAL LEAST SQUARES REGRESSION OF SPECTRAL DATA - (Peer Reviewed Journal)
Delwiche, S.R., Reeves III, J.B. 2004. SAS macro language program for partial least squares regression of spectral data [computer program]. Available: Journal of Near Infrared Spectroscopy software archive at http://www.nirpublications.com/software/index.html.
SAS PROGRAM FOR SPECTRAL PRE-TREATMENTS AND SAS PLS ANALYSIS - (Peer Reviewed Journal)
Reeves III, J.B., Delwiche, S.R. 2003. Statistical Analysis System program for spectral pre-treatments and partial least squares analysis [computer program]. Available: Journal of Near Infrared Spectroscopy software archive at http://www.nirpublications.com/software/index.html.
SAS PARTIAL LEAST SQUARES REGRESSION FOR ANALYSIS OF SPECTROSCOPIC DATA - (Peer Reviewed Journal)
Reeves III, J.B., Delwiche, S.R. 2004. Statistical Analysis System partial least squares regression for analysis of spectroscopic data. Near Infrared Spectroscopy Journal. 11(3):415-431.
PRACTICAL STATISTICS FOR COLLABORATIVE STUDIES - (Abstract Only)
Delwiche, S.R. 2003. Practical statistics for collaborative studies [abstract]. American Association of Cereal Chemists Meetings. p. 102.
PROTEIN CONTENT AND QUALITY OF WHEAT BY NEAR INFRARED REFLECTANCE: AN EXAMINATION OF PRETREATMENTS FOR PLS REGRESSION. APPLIED SPECTROSCOPY. 2003. V.56(12). P.1517-1527. - (Peer Reviewed Journal)
Delwiche, S.R., Graybosch, R.A. 2003. Protein content and quality of wheat by near infrared reflectance: an examination of spectral pretreatments for PLS regression. Journal of Applied Spectroscopy. 57(12):1517-1527.
CLASSIFICATION OF SCAB- AND OTHER MOLD-DAMAGED WHEAT KERNELS BY NEAR-INFRARED REFLECTANCE SPECTROSCOPY - (Peer Reviewed Journal)
DELWICHE, S.R. CLASSIFICATION OF SCAB- AND OTHER MOLD-DAMAGED WHEAT KERNELS BY NEAR-INFRARED REFLECTANCE SPECTROSCOPY. TRANSACTIONS OF THE AMERICAN SOCIETY OF AGRICULTURAL ENGINEERS. 2003.
A LOCALIZATION APPROACH TO THE NIR MEASUREMENT OF APPARENT AMYLOSE CONTENT OF GROUND WHEAT - (Peer Reviewed Journal)
WESLEY, I.J., OSBORNE, B.O., ANDERSSEN, R.S., DELWICHE, S.R., GRAYBOSCH, R.A. CHEMOMETRIC LOCALIZATION APPROACH TO NIR MEASUREMENT OF APPARENT AMYLOSE CONTENT OF GROUND WHEAT. CEREAL CHEMISTRY. 2003.
ENVIRONMENTAL EFFECTS ON DEVELOPING WHEAT AS SENSED BY NEAR-INFRARED REFLECTANCE OF MATURE GRAINS - (Peer Reviewed Journal)
DELWICHE, S.R., GRAYBOSCH, R.A., NELSON, L.A., HRUSCHKA, W.R. ENVIRONMENTAL EFFECTS ON DEVELOPING WHEAT AS SENSED BY NEAR-INFRARED REFLECTANCE OF MATURE GRAINS. CEREAL CHEMISTRY. 2002.
HYDROLYSIS OF WHEAT STARCH AND ITS EFFECT ON THE FALLING NUMBER PROCEDURE: MATHEMATICAL MODEL - (Peer Reviewed Journal)
CHANG, S., DELWICHE, S.R., WANG, N.S. HYDROLYSIS OF WHEAT STARCH AND ITS EFFECT ON THE FALLING NUMBER PROCEDURE: MATHEMATICAL MODEL. BIOTECHNOLOGY AND BIOENGINEERING. 2002.
NEAR-INFRARED ANALYSIS OF SINGLE KERNEL WHEAT - (Trade Journal)
CHARACTERIZATION OF ENVIRONMENTAL STRESS IN HARVESTED WHEAT BY NIR - (Abstract Only)
Delwiche, S. R., Graybosch, R.A. 2001. Characterization of environmental stress in harvested wheat by NIR. 2001 AACC Annual Meeting, 10/14-10/18/2001, Charlotte, N.C. URL: http://www.aaccnet.org/meetings/2001/abstracts/a01ma211.htm.
SINGLE KERNEL WHEAT NIR ANALYSIS - (Proceedings)
DELWICHE, S.R., DOWELL, F.E. SINGLE KERNEL WHEAT NIR ANALYSIS. INTERNATIONAL WHEAT QUALITY CONFERENCE. 2003.
APPLICATIONS IN ANALYSIS OF SMALL GRAIN CROPS: WHEAT, BARLEY, AND RICE - (Book / Chapter)
Delwiche, S.R. 2004. Applications in analysis of small grain crops: wheat, barley, and rice. Chapter 11. p. 269-320. In: Roberts, C.A., Workman Jr., J., and Reeves III, J.B., editors. Near-infrared spectroscopy in agriculture. Agron. Monogr. 44. ASA. CSSA, and SSSA, Madison, WI. 822 p.
IDENTIFICATION OF WAXY WHEAT BY NEAR-INFRARED REFLECTANCE SPECTROSCOPY - (Peer Reviewed Journal)
HYPERSPECTRAL IMAGING FOR DETECTION OF SCAB IN WHEAT - (Proceedings)
RAPID PREDICTION OF WHEAT ENDOSPERM COMPRESSIVE STRENGTH PROPERTIES USING THE SINGLE-KERNEL CHARACTERIZATION SYSTEM - (Peer Reviewed Journal)
MOISTURE DIFFUSION COEFFICIENTS OF SINGLE WHEAT KERNELS WITH ASSUMED SIMPLIFIED GEOMETRIES: ANALYTICAL APPROACH - (Peer Reviewed Journal)
WHEAT ENDOSPERM COMPRESSIVE STRENGTH PROPERTIES AS AFFECTED BY MOISTURE CONTENT - (Peer Reviewed Journal)
PROTEIN CONTENT OF BULK WHEAT FROM NEAR-INFRARED RREFLECTANCE SPECTRA OF INDIVIDUAL KERNELS - (Peer Reviewed Journal)
MID-INFRARED VERSUS NEAR-INFRARED DIFFUSE REFLECTANCE SPECTROSCOPY FOR QUANTITATIVE AND QUALITATIVE ANALYSIS OF AGRICULTURAL PRODUCTS - (Review Article)
USE OF NEAR-INFRARED SPECTROSCOPY TO CLASSIFY WHEAT BY THE NUMBER OF ACTIVE STARCH SYNTHASE (WAXY) GENES - (Proceedings)
MOISTURE DIFFUSION MODEL FOR A SINGLE WHEAT KERNEL DURING THE MOISTURE TEMPERING PROCESS - (Peer Reviewed Journal)
IDENTIFICATION OF WHEAT LINES POSSESSING THE 1BL.1RS OR 1AL.1RS WHEAT-RYE TRANSLOCATION BY NEAR-INFRARED REFLECTANCE SPECTROSCOPY - (Peer Reviewed Journal)
USE OF NEAR-INFRARED REFLECTANCE SPECTROSCOPY TO DISTINGUISH WHEATS WITH THE 1AL.1RS OR 1BL.1RS WHEAT-RYE TRANSLOCATION - (Proceedings)
DETERMINATION OF PROTEIN IN GROUND WHEAT SAMPLES BY MID-INFRARED DIFFUSE REFLECTANCE SPECTROSCOPY - (Peer Reviewed Journal)
COMPARISON OF MID-VERSUS NEAR-INFRARED DIFFUSE REFLECTANCE SPECTROSCOPY FOR THE DETERMINATION OF PROTEIN IN GROUND WHEAT SAMPLES - (Abstract Only)
PROGRESS IN PREDICTING RICE MILLING YIELD USING NEAR-INFRARED TECHNOLOGY - (Proceedings)
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