Summary
Two German cultivars differing in blackspot susceptibility were grown in pots in 1998 and 1999 under control and water stress conditions. Blackspot susceptibility of the tubers was defined as oxidative potential. The effect of free tyrosine, cysteine, phenylalanine, chlorogenic and ascorbic acid on the oxidative potential was analyzed. A high concentration of ascorbic acid led to a decrease in the oxidative potential after harvesting in 1998. No correlation was found between oxidative potential and free tyrosine, phenylalanine or cysteine, respectively. Chlorogenic acid content increased during storage and gave a significant correlation with discoloration, showing that it can have an effect on the oxidative potential of the tuber greater than previously thought. Supplementing freeze-dried potato samples with pure chlorogenic acid increased the oxidative potential. Oxidative potential seems to depend on a series of chemical compounds, and their content is affected by factors including annual variations, cultivar, water availability and storage.
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References
Anonymous, 1999a. Standards methods of the International Association for Cereal Science and Technology. ICC Standard 110/1. ICC-Vienna, Austria.
Anonymous, 1999b. Standards methods of the International Association for Cereal Science and Technology, ICC Standard 123. ICC-Vienna, Austria.
Anonymous, 2000. Bundessortenamt. Beschreibende Sortenliste. Kartoffeln. Landbuch-Verlag, ISSN 14 30-97.
Belknap, W.R., T.M. Rickey & D.R. Rockhold, 1990. Blackspot bruise dependent changes in enzyme activity and gene expression in LEMHI russet potato.American Potato Journal 67: 253–265.
Brown, C.R., M. McNabnay & B. Dean, 1999. Genetic characterization of reduced melanin formation in tuber tissue ofSolanum hjertingii and hybrids with cultivated diploids.American Journal of Potato Research 76: 37–43.
Burton, W.G., 1989. The distribution and composition of the dry matter in potato tuber. In: The Potato. Longman Group UK, pp. 293–309.
Cohen, S.A. & D.P. Michaud, 1993. Synthesis of a fluorescent derivatizing reagent, 6-aminoquinolyl-n-hydroxysuccinimidyl carbamate, and its application for the analysis of hydrolysate amino acids via high performance liquid chromatography.Analytical Biochemistry 211: 279–287.
Dao, L. & M. Friedman, 1992. Chlorogenic acid content of fresh and processed potatoes determined by ultraviolet spectrophotometry.Journal of Agricultural and Food Chemistry 40: 2152–2156.
Dean, B.B., N. Jakowiack & S.H. Munck, 1992. Tyrosine synthesis in potato tuber tissue from blackspot susceptible and resistant genotypes.Potato Research 35: 49–55.
Dean, B.B., N. Jakowiak, M. Nagle, J. Pavek & D. Corsini, 1993. Blackspot pigment development of resistant and susceptibleSolanum tuberosum L. Genotypes at harvest and during storage measured by three methods of evaluation.American Potato Journal 70: 201–217.
Delgado, E. & E. Pawelzik, 1999. Effect of water stress on the quality and storability of potato tubers differing in blackspot susceptibility. Dahlia Greidinger International Symposium, Nutrient Management under Salinity and Water Stress. Technion-Israel Institute of Technology, Haifa, Israel, pp. 173–182.
Griffiths, D.W., H. Bain & M.F.B. Dale, 1992. Development of a rapid colorimetric method for determination of chlorogenic acid in freeze-dried potato tubers.Journal of the Science of Food and Agriculture 92: 41–48.
Hasegawa, S., R.M. Johnson & W.A. Gould, 1966. Effect of cold storage on chlorogenic acid content of potatoes.Journal of Agricultural and Food Chemistry 14: 165–168.
Kiattisak, D., K. Richard & A. Owusu, 1999. A comparative study of polyphenoloxidase from taro (Colocasia esculenta) and potato (Solanum tuberosum var. Romano).Food Chemistry 64: 351–359.
Libbert, E., 1993. Lehrbuch der Pflanzenphysiologie. Gustav Fischer, Jena, pp. 34–36.
Matheis, G., 1987. Polyphenol oxidase and enzymatic browning of potatoes (Solanum tuberosum). II. Enzymatic browning and potato constituents.Chemie, Mikrobiologie, Technologie der Lebensmittel 11: 33–41.
Matheis, G. & H.D. Belitz, 1977. Untersuchungen zur enzymatischen Bräunung bei Kartoffeln (Solanum tuberosum).Zeitschrift für Lebensmittel-Untersuchung und-Forschung 163: 186–190.
McNabnay, M., B.B. Dean, R.W. Bajema & G.M. Hyde, 1999. The effect of potassium deficiency on chemical, biochemical and physical factors commonly associated with blackspot development on potato tubers.American Journal of Potato Research 75: 53–60.
Molema, G.J., 1999. Mechanical force and subcutaneous tissue discoloration in potato. IMAG, Wageningen, The Netherlands, pp. 1–11.
Mondy, N.I., B.P. Klein & L.I. Smith, 1960. The effect of maturity and storage on phenolic content, enzymatic activity and discoloration of potatoes.Food Research 25: 693–705.
Mulder, E.G., 1949. Mineral nutrition in relation to the biochemistry and physiology of potatoes.Plant and Soil 11: 59–121.
Müller, K., 1975. Veränderung wertgebender Inhaltsstoffe in der Kartoffelpflanze und-Knolle. Schriftenreihe der Fördergemeinschaft der Kartoffelwirtschaft e.V., Heft 17. Verlag Th. Mann, Hildesheim.
Sabba, R.P. & B.B. Dean, 1996. Effect of cold storage on proteinase and chorismate mutase activities inSolanum tuberosum L. Genotypes differing in blackspot susceptibility.American Potato Journal 73: 113–122.
Smith, O., 1977. Potatoes: production, storing, processing. Avi Publishing Co., Inc., Wastport, Connecticut, USA.
Stark, J.C., D.L. Corsini, P.J. Hurley & R.B. Dwelle, 1985. Biochemical characteristics of potato clones differing in blackspot susceptibility.American Potato Journal 62: 657–666.
Stevens, L.H. & E. Davelaar, 1996. Isolation and characterization of blackspot pigments from potato tubers.Phytochemistry 42: 941–947.
Stevens, L.H. & E. Davelaar, 1997. Biochemical potential of potato tubers to synthesize blackspot pigments in relation to their actual blackspot susceptibility.Journal of Agricultural and Food Chemistry 45: 4221–4226.
Vertregt, N., 1968. Relationship between blackspot and composition of the potato tuber.European Potato Journal 11: 34–44.
Weber, L. & B. Putz, 1999. Vitamin C content in Potatoes. 14th triennial Conference of European Association for Potato Research. Abstracts of Conference Papers, Posters and Demonstrations, Sorrento, Italy. Assesorato Agricoltura Regione Campania, pp. 230–213.
Winiger, F.A. & J.W. Ludwig, 1974. Methoden der Qualitätsbeurteilung bei Kartoffeln für den menschlichen Konsum.Potato Research 17: 434–465.
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Delgado, E., Sulaiman, M.I. & Pawelzik, E. Importance of chlorogenic acid on the oxidative potential of potato tubers of two German cultivars. Potato Res 44, 207–218 (2001). https://doi.org/10.1007/BF02410107
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DOI: https://doi.org/10.1007/BF02410107