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Influence of high-temperature exposure on sugar content and chipping quality of potatoes

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An Erratum to this article was published on 01 January 1968

Summary

Kennebec and White Rose potatoes harvested at different dates were exposed for 2 or 4 days to temperatures above 25 C, then transferred to 20 C. Increase in concentration of total sugars was stimulated by exposure to high temperature, but diminished during holding at lower temperature. Reducing sugars were not affected similarly. High total sugar concentration enhanced darkening of chips. Light-colored chips were obtained from tubers transferred to 20 C after exposure to high temperature, provided tubers had a low reducing sugar concentration.

Resumen

Papas Kennebec y White Rose cosechadas en fechas diferentes fueron expuestas durante 2 0 4 días a temperaturas mayores de 25 C y después transferidas a 20 C. Incremento en concentración de azúcares totales fué estimulado a causa de la alta temperatura pero disminuyó durante la preservación a la temperatura más baja. Azúcares reductores no fueron afectados de una manera similar. Una total alta concentración de azúcares dió papas fritas más obscuras. Papas fritas de color más ligero fueron obtenidas de tubérculos transferidos a 20 C después de haber sido expuestos a temperaturas más altas, cuando estos tubérculos contenían una baja concentración de azúcares reductores.

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Former Graduate Assistant

Private communication from Mr. William B. Corrin, Agronomist, Granny Goose Foods, Oakland, California.

An erratum to this article is available at http://dx.doi.org/10.1007/BF02863031.

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Timm, H., Yamaguchi, M., Clegg, M.D. et al. Influence of high-temperature exposure on sugar content and chipping quality of potatoes. American Potato Journal 45, 359–365 (1968). https://doi.org/10.1007/BF02849713

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