Abstract
The protein content of 21 varieties of potatoes grown under similar conditions was measured by Kjeldahl nitrogen determination and by the binding of the dye orange G. A linear relationship between nitrogen content and bound dye was found. The regression equation Y=.105+.091X was derived, where Y was the absorbance of bound dye and X was the % total protein (% N x 6.25). The correlation coefficient was +0.9827 and the standard error of estimate was 0.07%.
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Kaldy, M.S., Malewski, W. & Markakis, P. Estimation of potato protein content by dye binding. American Potato Journal 49, 177–181 (1972). https://doi.org/10.1007/BF02864736
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DOI: https://doi.org/10.1007/BF02864736