The changes of biochemical content in seabuckthorn (Hippophae rhamnoides L.) during ripening
2008
Viskelis, P., Lithuanian Inst. of Horticulture, Babtai, Kaunas distr. (Lithuania) | Lanauskas, J., Lithuanian Inst. of Horticulture, Babtai, Kaunas distr. (Lithuania) | Seglina, D., Latvia State Inst. of Fruit-Growing, Dobele (Latvia) | Ruisa, S., Latvia State Inst. of Fruit-Growing, Dobele (Latvia)
Seabuckthorn fruits are a valuable raw material for the production of biologically active food products. Their content of vitamins, minerals and phenolic compounds depends on harvesting time. The cultivars studied in Lithuania were introduced from the Botanical Garden of Moscow State University. The plantation was established on sandy loam soil in 1998 in Kaunas district, Lithuania. The aim of the study was to determine the changes of physical and chemical parameters during the growing season (3rd decade of July – 3rd decade of September, 2006). It was found that the firmness of seabuckthorn fruits decreased from 43-63 N m-2 to 20-27 N mE-2. The highest content of sugars was found in the cultivar ‘Trofimovskaya’ at the end of the 3rd decade 5.8%), while the lowest content was in the cultivar ‘Botanicheskaya’ (4.1%). The content of total acids decreased from 2.7-2.9% to 1.1-1.4%. The highest content of vitamin C was found in the cultivar ‘Trofimovskaya’ whiles the lowest content was found in the cultivar ‘Avgustinka’. The highest content of total carotenoids was found in the cultivar ‘Trofimovskaya’ (24.9%), and the lowest in the cultivar ‘Botanicheskaya’ (13 mg 100gE-1). Therefore, we conclude that the optimal harvesting time of seabuckthorn fruits in Lithuania Kaunas district is in the 1st decade of September.
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