Location: Peanut Research
Title: Application of Near Infrared Reflectance Spectroscopy on Determination of Moisture, Total oil and Protein Contents of In-shell Peanuts Authors
Submitted to: American Institute of Chemical Engineers
Publication Type: Proceedings
Publication Acceptance Date: July 20, 2009
Publication Date: November 10, 2009
Citation: Sundaram, J., Kandala, C., Holser, R.A., Windham, W.R., Butts, C.L. 2009. Application of Near Infrared Reflectance Spectroscopy on Determination of Moisture, Total oil and Protein Contents of In-shell Peanuts. American Institute of Chemical Engineers. Interpretive Summary: Not required.
Technical Abstract: Moisture, total oil and protein content of peanuts are important factors in peanut grading. A method that could rapidly and nondestructively measure these parameters for in-shell peanuts would be extremely useful. NIR reflectance spectroscopy was used to analyze the moisture, total oil and protein content of Virginia type in-shell peanuts. NIR absorbance spectra were collected in the wavelength range from 400 nm to 2500 nm using a Foss NIR instrument. Average values of moisture and total oil contents of all samples were determined by standard air-oven and Soxtec methods, respectively. Protein was measured using Leco Nitrogen analyser. Partial Least Squares analysis was done to develop empirical models for prediction. The best model was selected based on the coefficient of determination (R2), Standard Error of Prediction (SEP) and the ratio of SEP to standard deviation (RPD) values.