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The content of sugars (glucose, fructose, sucrose, sorbitol) and organic acids (citric, malic, fumaric, tartaric) was analysed with HPLC (High Performance Liquid Chromatography) in pear fruits of 18 European (Pyrus communis L.) and 4 Asian (Pyrus serotina Rehd.) cultivars. The cultivars differed in the content of different sugars and organic acids. Fructose varied in the European pear cultivars from 23.7 g kg &1 in cv. ‚Conference™ to 66.1 g kg &1 in cv. ‚Clapp Favorite™ and in the Asian cultivars from 27.9 g kg &1 in cv. ‚Shinseiki™ to 45.7 g kg &1 in cv. ‚Koshui™. Sorbitol varied in the European pear cultivars from 12.5 g kg &1 in cv. ‚Conference™ to 24.9 g kg &1 in cv. ‚Beurré Bosc™ and in the Asian cultivars from 5.0 g kg &1 in cv ‚Shinseiki™ to 19.0 g kg &1 in cv. ‚Kumoi™. The Asian pear cultivars contained more total sugars than the European ones. The early cultivars of pears contained more than 1.0 g kg &1 of citric acid and the late ones less than 1.0 g kg &1 . The cvs. ‚Williams Bon Chrétien™, ‚Early Morettini™, ‚Princess Mariane™, ‚Koshui™ and ‚Hoshui™ contained more citric than malic acid. In the cvs. ‚Concorde™, ‚Conference™ and ‚Beurré Alexandre Lucas™ no citric acid was traced. The content of tartaric acid was traced only in cv. ‚Hardy™.

  • Arfaioli, P. & Bosetto, M. (1993): Time changes of free organic acid contents in seven Italian pear (Pyrus communis) varieties with different ripening times. Agr. Med., 123, 224-230.

    'Time changes of free organic acid contents in seven Italian pear (Pyrus communis) varieties with different ripening times. ' () 123 Agr. Med. : 224 -230.

    • Search Google Scholar
  • Behboudian, M. H. & Lawes, G. S. (1994): Fruit quality in 'Nijisseiki' Asian pear under deficit irrigation: physical attributes, sugar and mineral content, and development of flesh spot decay. New Zealand J. Crop. Hortic. Sci, 22, 393-400.

    'Fruit quality in 'Nijisseiki' Asian pear under deficit irrigation: physical attributes, sugar and mineral content, and development of flesh spot decay. ' () 22 New Zealand J. Crop. Hortic. Sci : 393 -400.

    • Search Google Scholar
  • Beleski, R. L. (1982): Sugar alcohols -in: Loewous, F. A. & Tanner, W. (Eds) Encyclopaedia of plant physiology. New Series, Vol. 13A, New York, Springer Verlag, pp. 158-192.

    Encyclopaedia of plant physiology. New Series , () 158 -192.

  • Bosetto, M. & Afraioli, P. (1992): Time changes of free sugar and polyol content in seven Italian pear (Pyrus communis) varieties with different ripening periods. Agr. Med., 122, 59-65.

    'Time changes of free sugar and polyol content in seven Italian pear (Pyrus communis) varieties with different ripening periods. ' () 122 Agr. Med. : 59 -65.

    • Search Google Scholar
  • Brooks, S. J., Moore, J. N. & Murphy, J. B. (1993): Quantitative and qualitative changes in sugar content of peach genotypes [Prunus persica (L.) Batsch.] J. Amer. Soc. Hort. Sci, 118, 97-100.

    'Quantitative and qualitative changes in sugar content of peach genotypes [Prunus persica (L.) Batsch.] ' () 118 J. Amer. Soc. Hort. Sci : 97 -100.

    • Search Google Scholar
  • Caspari, H. W., Behboudian, M. H., Chalmers, D. J., Clothier, B. E. & Lenz, F. (1996): Fruit characteristics of Hosui' Asian pears after deficit irrigation. HortScience, 31, 162.

    'Fruit characteristics of Hosui' Asian pears after deficit irrigation. ' () 31 HortScience : 162.

    • Search Google Scholar
  • Dolenc, K. & Štampar, F. (1998): Determining the quality of different cherry cultivars using the HPLC method. Acta Horticulturae, 468, 705-712.

    'Determining the quality of different cherry cultivars using the HPLC method. ' () 468 Acta Horticulturae : 705 -712.

    • Search Google Scholar
  • Fourie, P. C, Hansmann, C. F. & Oberholzer, H. M. (1991): Sugar content of fresh apples and pears in South Africa. J. agric. Fd Chem., 39, 1938-1939.

    'Sugar content of fresh apples and pears in South Africa. ' () 39 J. agric. Fd Chem. : 1938 -1939.

    • Search Google Scholar
  • Meheriuk, H., Lane, W. D. & Hall, J. W. (1987): Influence of cultivar on nectar sugar content in several species of tree fruits. HortScience, 22, 448-450.

    'Influence of cultivar on nectar sugar content in several species of tree fruits. ' () 22 HortScience : 448 -450.

    • Search Google Scholar
  • Morvai, M. & Molnár-Perl, I. (1992): Simultaneous gas chromatographic quantitation of sugars and acids in citrus fruits, pears, bananas, apples and tomatoes. Chromatographia, 34, 502-504.

    'Simultaneous gas chromatographic quantitation of sugars and acids in citrus fruits, pears, bananas, apples and tomatoes. ' () 34 Chromatographia : 502 -504.

    • Search Google Scholar
  • Dolenc-šturm, K., štampar, F. & Usenik, V. (1999): Evaluating of some quality parameters of different apricot cultivars using the HPLC method. Acta Alimentaria, 28, 297-309.

    'Evaluating of some quality parameters of different apricot cultivars using the HPLC method. ' () 28 Acta Alimentaria : 297 -309.

    • Search Google Scholar
  • Doyon, G., Gaudreau, G., ST.-Gelais, D., Beaulieu, Y. & Randall, C. J. (1991): Simultaneous HPLC determination of organic acids, sugars and alcohols. Can. Inst. Sci. Technol. J., 24, 87-94.

    'Simultaneous HPLC determination of organic acids, sugars and alcohols. ' () 24 Can. Inst. Sci. Technol. J. : 87 -94.

    • Search Google Scholar
  • Negriz, C. & Yildiz, H. (1997): Research on chemical composition of some varieties of European plums (Prunus domestica) adapted to the Aegean district of Turkey. J. agric. Fd Chem., 45, 2820-2823.

    'Research on chemical composition of some varieties of European plums (Prunus domestica) adapted to the Aegean district of Turkey. ' () 45 J. agric. Fd Chem. : 2820 -2823.

    • Search Google Scholar
  • Pérez, A. G., Olías, R., Espada, J., Olías, J. M. & Sanz, C. (1997): Rapid determination of sugars. Non volatile acids, and ascorbic acid in strawberry and other fruits. J. agric. Fd Chem., 45, 3545-3549.

    'Rapid determination of sugars. Non volatile acids, and ascorbic acid in strawberry and other fruits. ' () 45 J. agric. Fd Chem. : 3545 -3549.

    • Search Google Scholar
  • Richmond, M. L., Brando, S. C. C, Gray, J. I., Markakis, P. & Stine, C. M. (1981): Analysis of simple sugars and sorbitol in fruit by high performance chromatography. J. agric. Fd Chem., 29, 4-7.

    'Analysis of simple sugars and sorbitol in fruit by high performance chromatography. ' () 29 J. agric. Fd Chem. : 4 -7.

    • Search Google Scholar
  • Roemer, K. (1989): Das Zuckermuster verschiedener Obstarten. Erwerbsobstbau, 31, 211-216.

    'Das Zuckermuster verschiedener Obstarten. ' () 31 Erwerbsobstbau : 211 -216.

  • Selli, R. & Sansavini, S. (1995): Sugar, acid and pectin content in relation to ripening and quality of peach and nectarine fruits. Acta Horticulturae, 379, 345-356.

    'Sugar, acid and pectin content in relation to ripening and quality of peach and nectarine fruits. ' () 379 Acta Horticulturae : 345 -356.

    • Search Google Scholar
  • Snedecor, G. W. & Cochran, W. G. (1971): Statistical methods. Iowa, The Iowa State University Press, pp. 258-298.

    Statistical methods , () 258 -298.

  • Truswell, A. S. (1988): The other carbohydrates-sugars. Fd Technol. Aust., 40, 268.

    'The other carbohydrates-sugars. ' () 40 Fd Technol. Aust. : 268.

  • Voi, A. L., Impembo, M., Fasanaro, G. & Castaldo, D. (1995): Chemical characterisation of apricot puree. J. Fd Composition Anal., 8, 78-85.

    'Chemical characterisation of apricot puree. ' () 8 J. Fd Composition Anal. : 78 -85.

  • Yamaki, S. (1983): Biochemical changes of cell wall elements with fruit development and ripening, and the harvesting period in Japanese pear fruit (Pyrus serotina Rehder var. culta Rehder). J. agric. Res. Q., 77, 34-40.

    'Biochemical changes of cell wall elements with fruit development and ripening, and the harvesting period in Japanese pear fruit (Pyrus serotina Rehder var. culta Rehder). ' () 77 J. agric. Res. Q. : 34 -40.

    • Search Google Scholar
  • Genard, M., Souty, M., Reich, M. & Laurent, R. (1996): Modelling the carbon use for sugar accumulation and synthesis in peach fruit. Acta Horticulturae, 416, 121-128.

    'Modelling the carbon use for sugar accumulation and synthesis in peach fruit. ' () 416 Acta Horticulturae : 121 -128.

    • Search Google Scholar
  • Hudina, M. & Šktampar, F. (1998): Saisonale Veränderungen von Zucker und organischen Säuern bei Birnen (Pyrus communis L.) cv. 'Williams Christbirne'. Krankenheitsresistenz und Pflanzenschutz. Voraussetzung für die Qualitatsproduktion, XXXIII Vortragstagung, 23.-24. März 1998, Dresden, pp. 191-196.

    'Saisonale Veränderungen von Zucker und organischen Säuern bei Birnen (Pyrus communis L.) cv. 'Williams Christbirne' ' , , .

    • Search Google Scholar
  • Kawamata, S. (1977): Studies on sugar component of fruits by gas-liquid chromatography. Bull. Tokyo Agric. Exp. Sta., 10, 53-67.

    'Studies on sugar component of fruits by gas-liquid chromatography. ' () 10 Bull. Tokyo Agric. Exp. Sta. : 53 -67.

    • Search Google Scholar