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Scientific Papers Series B Horticulture

Scientific Papers Series B Horticulture

Scientific Papers Series B Horticulture

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CONCLUSIONSThe accurate analysis of vitamin C and organicacids of apples by HPLC enables us to observethe quality changes during postharvest period.Vitamin C and organic acid content of themajority of cultivars changed as a function ofstorage time. Both cultivars had lost vitamin Ccontents at the end of the storage, but ‘Trotuse’showed a greater decrease than ‘Gurguiate’.These results showed that changes in vitamin Ccontents of apples are cultivar dependent. Onthe other hand, the consumer should take intoconsideration that the loss of vitamin Cincreases with storage time. During storage, thehighest share of total acids was exhibited bycitric acid. This acid decreased by 10 days ofcold storage in comparison to initial values.In future investigations, we propose that theobjective analytical determination of thesecritical components should be coupled withsubjective evaluation by a taste panel toprovide useful and meaningful informationabout quality changes of apples during thestorage.REFERENCESAdisa V. A., 1986. The influence of molds and somestorage factors on the ascorbic acid content of orangeand pineapple fruits. Food Chemistry 22, p. 139-146.Agar T., 1995. A sensitive method to determination of L-Ascorbic asid, dehydroascorbicasid and total vitaminC:microfluorometric method (in Turkish). CukurovaUniversity Journal of the Faculty of Agriculture 9 (1),p. 11-20.Asami D.K., Hong Y.J., Barrett D.M. and Mitchell A.E.,2003. Comparison of the total phenolic and ascorbicacid content of freeze-dried and air-driedmarionberry, strawberry, and corn grown usingconventional, organic, and sustainable agriculturalpractices. Journal of Agricultural and FoodChemistry 51, p. 1237-1241.Asif Ali M., Raza H., Azam M., Khan and Manzoor H.,2004. Effect of different periods of ambient storageon chemical composition of apple fruit. Int. J. Agri.Biol. 6 (2), p. 568-571.Du G., Li M., Ma F. and Liang D., 2009. Antioxidantcapacity and the relationship with polyphenol andvitamin C in Actinidia fruits. Food Chemistry 113, p.557-562.Holcroft D.M. and Kader A.A., 1999. Controlledatmosphere-induced changes in pH and organic acidmetabolism may affect color of stored strawberryfruit. Postharvest Biology and Technology 17, p. 19-32.Kader A.A., 1990. Quality and its maintenance inrelation to postharvest physiology of strawberry, Thestrawberry into the 21 st century, proceeding of thethird north American strawberry conference,Houston, Texas, p.145-152.Lee S.K. and Kader A.A, 2000. Preharvest andpostharvest factors influencing vitamin C content ofhorticultural crops. Postharvest Biology andTechnology 20, p. 207-220.Mitre I, Mitre V, Ardelean M, Sestras R, SestrasA, 2009. Evaluation of old apple cultivars grown incentral Transylvania, Romania. Not Bot HortiAgrobo 37 (1), p. 235-237.Pelayo C., Ebeler S.E., Kader A.A., 2003. Postharvestlife and flavor quality of three strawberry cultivarskept at 5°C in air or air + 20 kPa CO 2 . PostharvestBiology and Technology 27 (2), p. 171-183.Perez A.G., Sanz C., 2001. Effect ofhigh-oxygen andhigh-carbon-dioxide atmospheres on strawberryflavor and other quality traits. Journal of Agriculturaland Food Chemistry 49, p. 2370-2375.Sanz C., Perez A.G., Olias R., Olias J.M., 1999. Qualityof strawberries packed with perforatedpolypropylene. Journal of Food Science 64 (4), p.748-752.Schöpplein E., Krüger E., Rechner A., Hoberg E., 2002.Analytical and sensory qualities of strawberrycultivars. Acta <strong>Horticulture</strong> 567, p. 805-808.Simon J.A., 1992. Vitamin C and cardiovascular disease.Journal of the American College of Nutrition 11, p.107-125.212

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