Improving the Accuracy of Electronic Moisture Meters for Runner-Type Peanuts

Lamb , M.C. and Butts , C.L. and Blankenship, P.D. (2013) Improving the Accuracy of Electronic Moisture Meters for Runner-Type Peanuts. Peanut Science, 40 (1). pp. 3-7.

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Runner-type peanut kernel moisture content (MC) is measured periodically during curing and post harvest processing with electronic moisture meters for marketing and quality control. MC is predicted for 250 g samples of kernels with a mathematical function from measurements of various physical properties. To examine the accuracy of the function used in the Dickey-john GAC2100 for measuring MC of runner-type peanuts, 421 samples were measured with the meter and compared to oven MC data subsequently determined using ASAE Standard S410.1. Peanut moisture content for the peanuts according to the meter averaged 19.1% with a SD of 15.4%. Oven moisture contents had a mean of 17.3% and a SD of 8.5%. Means were significantly different (P  =  0.001). A calibration equation was derived from capacitance, conductance, temperature, and test weight data provided by the meter and compared to oven MC data. Moisture contents calculated from the calibration equation had a 17.3% mean and an 8.5% SD equaling values for oven determined moisture contents. Results of the study indicate that the accuracy of the meter in predicting moisture content can be improved considerably utilizing currently collected data and the derived calibration equation developed

Item Type: Article
Author Affiliation: Research Food Technologist, Agricultural Engineer, and Agricultural Engineer (retired), USDA, ARS, Nat. Peanut Res. Lab., Dawson, GA 39842
Subjects: Postharvest Management
Plant Physiology and Biochemistry > Plant Physiology
Divisions: Groundnut
Depositing User: Mr B Krishnamurthy
Date Deposited: 23 Aug 2013 08:08
Last Modified: 23 Aug 2013 08:08
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