Summary
Palatability and composition of potatoes grown in soil treated with pentachloronitrobenzene (PCNB) at 30 and 50 lbs per acre were studied. Potatoes were investigated as received and after storage at various times and temperatures
There was evidence in some cases of off-flavors, off-odors, and colors resulting from PCNB treatment at 50 lbs per acre. However, differences were not consistently detected by most of the panel members. Adverse effects of PCNB usually appeared to diminish with storage of the potatoes. PCNB treatment at 30 lbs per acre appeared to have no adverse affect on palatability of the potatoes. When technical PCNB (Terraclor) was added directly to potatoes at 0.2 or 2.0 ppm active PCNB, it appeared to cause off-flavors.
PCNB-treatment did not appear to have significant effects on tyrosinase, total phenols, starch, total solids, specific graviy, pH, titratable acids, citric acid, malic acid or ascorbic acids. PCNB residues ranging from 0.12 to 0.17 ppm were found in potatoes grown in soil treated with PCNB at 50 lbs per acre.
Resumen
Se han investigado la palatabilidad y la composición de papas crecidas en un suelo tratado con pentachloronitrobenzene (PCNB) a 30 y 50 lbs por acre. Las papas fueron investigadas cuando fueron recibidas y después de almacenamiento durante vario tiempo a varias temperaturas.
Hubo evidencia en algunos casos de algunas modoficaciones de sabor, olor, y color debidas al tratamiento por PCNB a 50 lbs por acre. Sinembargo, las diferencias no fueron consistentemente descubiertas por la mayoria de expertos jueces. Los efectos adversos del PCNB disminuyeron, al parecer, con el almacenamiento de las papas. El tratamiento con PCNB aparentemente no tuvo efectos significantes sobre la tirosinasa, los fenoles totales, el almidón, los sólidos totales, el peso especifico, el pH, los ácidos titrables, el ácido citrico, el ácido málico, o ácido ascórbico. Residuos de PCNB en cantidades de 0.12 a 0.17 ppm fueron encontrados en papas crecidas en suelo tratado con PCNB a 50 lbs por acre.
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An erratum to this article is available at http://dx.doi.org/10.1007/BF02863031.
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Sweeney, J.P., Chapman, V.J. & Hepner, P.A. Effect of pentachloronitrobenzene on quality of potatoes. American Potato Journal 45, 383–390 (1968). https://doi.org/10.1007/BF02849717
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DOI: https://doi.org/10.1007/BF02849717