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Scientia Horticulturae
Wodner, M., Department of Olei- and Viticulture, Volcani Center, Bet Dagan, Israel
Lavee, S., Department of Olei- and Viticulture, Volcani Center, Bet Dagan, Israel
Epstein, E., Department of Olei- and Viticulture, Volcani Center, Bet Dagan, Israel
The amounts of glucose, fructose and mannitol, the main sugars in olive fruits, were determined in 'Kadesh', 'Uovo di Piccione' and 'Manzanillo' which have 8, 15 and 20% oil, respectively, at full black maturation. The sugars were separated by high-pressure liquid chromatography and characterized by ultraviolet detection after derivatization with nitrobenzoate. The total amount of sugar in 'Kadesh' was more than double that in the two other cultivars. A parallel rise in oil and sugar levels was noticed at the beginning of the fruit ripening period of 'Kadesh', while the sugar level of the other cultivars decreased during most of that period. Glucose was the predominant sugar in all cultivars, followed by fructose and mannitol. The relative amounts of mannitol were only 2% in 'Kadesh' and 10% in 'Manzanillo' and 'Uovo de Piccione'. It is suggested that mannitol levels and oil accumulation are related. © 1988.
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Identification and seasonal changes of glucose, fructose and mannitol in relation to oil accumulation during fruit development in Olea europaea (L.)
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Wodner, M., Department of Olei- and Viticulture, Volcani Center, Bet Dagan, Israel
Lavee, S., Department of Olei- and Viticulture, Volcani Center, Bet Dagan, Israel
Epstein, E., Department of Olei- and Viticulture, Volcani Center, Bet Dagan, Israel
Identification and seasonal changes of glucose, fructose and mannitol in relation to oil accumulation during fruit development in Olea europaea (L.)
The amounts of glucose, fructose and mannitol, the main sugars in olive fruits, were determined in 'Kadesh', 'Uovo di Piccione' and 'Manzanillo' which have 8, 15 and 20% oil, respectively, at full black maturation. The sugars were separated by high-pressure liquid chromatography and characterized by ultraviolet detection after derivatization with nitrobenzoate. The total amount of sugar in 'Kadesh' was more than double that in the two other cultivars. A parallel rise in oil and sugar levels was noticed at the beginning of the fruit ripening period of 'Kadesh', while the sugar level of the other cultivars decreased during most of that period. Glucose was the predominant sugar in all cultivars, followed by fructose and mannitol. The relative amounts of mannitol were only 2% in 'Kadesh' and 10% in 'Manzanillo' and 'Uovo de Piccione'. It is suggested that mannitol levels and oil accumulation are related. © 1988.
Scientific Publication
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