Abstract
Tree cultivars (Jupiter, Sejnov, and Elit) of walnut (Juglans regia L.) were collected during the 2004 harvest from Cacak, Central Serbia. The chemical composition, including moisture, total oil content, crude protein, ash, and carbohydrates, was determined. Afterwards, two techniques of oil extraction were implemented: cold pressing extraction and organic solvent extraction. Iodine value, saponification value, acid value, and peroxide value of obtained walnut oils were analyzed. The fatty acid composition of the walnut oils was determined using gas chromatography with flame ionization detector. The oleic acid content of the oils ranged from 15.9–23.7% of the total acids, while linoleic acid content ranged from 57.2–65.1% and the linolenic acid from 9.1–13.6%. The process of oil extraction had no significant effect on content and composition of fatty acids.
Similar content being viewed by others
References
K. Laskowski and A. Kulikowska, Akad. Med., Lublin, Pol. Roczniki Pastwowego Zakladu Higieny, 18, 483 (1967).
R. B. N. Prasad: Walnuts and pecans, In: Encyclopaedia of Food Science, Food Technology and Nutrition, Academic Press, London (1994), 4828.
C. Greve, G. McGranahan, J. Hasey, R. Snyder, K. Kelly, D. Goldhamerer, and J. Labavitch, J. Soc. Hort. Sci., 117, 518 (1992).
J. M. Garcia, I. T. Agar, and J. Streif, Turk. J. Agric. Forestry, 18, 195 (1994).
C. Crews, P. Hough, J. Godward, P. Brereton, M. Lees, S. Guiet, and W. Winkelmann, J. Agric. Food Chem., 53, 4835 (2005).
G. P. Savage, P. C. Dutta, and D. L. McNeil, J. Am. Oil Chem. Soc., 76, 1059 (1999).
J. Sabate, G. E. Fraser, K. Burke, S. F. M. Knutsen, H. Bennett, and K. D. Lindsted, N. Engl. J. Med., 328, 603 (1993).
M. Abbey, M. Noaks, G. B. Belling, and P. J. Nestel, Am. J. Clin. Nutr., 59, 995 (1994).
C. R. Harper and T. A. Jacobson, Arch. Intern. Med., 161, 2185 (2001).
G. P. Savage, Plant Foods Hum. Nutr., 56, 75 (2001).
J. S. Amaral, S. Casal, J. A. Pereira, R. M. Seabra, and B. P. P. Oliveira, J. Agric. Food Chem., 51, 7698 (2003).
Y. Shijie, W. Caire, K. Xiaohong, D. Junmin, and H. Juping, Shipin Gongye Keji., 23, 33 (2002).
S. Ruggeri, M. Cappelloni, L. Gambelli, S. Nicoli, and E. Carnovale, Ital. J. Food Sci., 10, 243 (1998).
L. Zwarts, G. P. Savage, and D. L. McNeil, Int. J. Food Sci. Nutr., 50, 189 (1999).
M. A. Koyuncu, T. Yarilgac, A. Kazankaya, F. Koyuncu, M. Kucuk, and S. M. Sen, Acta Hortic., 544, 557 (2001).
Official Methods of Analysis, AOAC (17th ed.), Arlington, Virginia, 2000, Vol II, Ch. 40.
N. R. Grosso, V. Nepote, and C. A. Guzman, J. Agric. Food Chem., 48, 806 (2000).
Official Methods of Analysis, AOAC (16th ed.), Arlington, Virginia, 1995, Vol II, Ch. 41.
L. D. Metcalfe and A. A. Schmitz, Annal. Chem., 33, 363 (1961).
International standard ISO 5508-1978 (E), ISO 5508-1979 (E).
Author information
Authors and Affiliations
Additional information
Published in Khimiya Prirodnykh Soedinenii, No. 2, pp. 118–120, March–April, 2008.
Rights and permissions
About this article
Cite this article
Rabrenovic, B., Picuric-Jovanovic, K. & Sobajic, S. Physicochemical properties and fatty acid composition of Juglans regia cultivars grown in Serbia. Chem Nat Compd 44, 151–154 (2008). https://doi.org/10.1007/s10600-008-9000-8
Received:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10600-008-9000-8