Grasas y Aceites, Vol 58, No 4 (2007)

Effect of gamma radiation on microbiological and oil properties of black cumin (Nigella sativa L.)


https://doi.org/10.3989/gya.2007.v58.i4.444

Muhammet Arici
Department of Food Engineering, Faculty of Agriculture, Namik Kemal University, Turkey

Ferya Arslan Colak
Directorate of District-Cerkezkoy, Ministry of Agriculture and Rural Affair, Turkey

Ümit Gecgel
Department of Food Engineering, Faculty of Agriculture, Namik Kemal University, Turkey

Abstract


Black cumin samples obtained from the market have been irradiated under 2.5 kGy, 6 kGy, 8 kGy, and 10 kGy doses, respectively. Along with the increase in the dose of irradiation, both the free fatty acid and peroxide values of the samples increased, whereas oil contents, iodine numbers, refraction index and Rancimat values decreased. In the composition of fatty acids, while the percentages of unsaturated fatty acids decreased; trans fatty acid levels increased. Microbial count of the samples decreased as the dose of irradiation increased. It has been observed that total bacterial count as well as total count of yeast and mould reduced to the undetectable limit.

Keywords


Black cumin; Fatty acid composition; Irradiation; Nigella sativa L; Physicochemical and microbiological properties

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References


Akgul A. 1989. Antimicrobial activity of black cumin (Nigella sativa L.) essential oil. Gazi Universitesi Eczacilik Fakultesi Dergisi 6, 63-68.

Al-Jassir MS. 1992. Chemical composition and microflora of black cumin (Nigella sativa L.) seeds growing in Saudi Arabia. Food Chemistry 45, 239-242. doi:10.1016/0308-8146(92)90153-S

AOAC 1990. Official Methods of Analysis of the Association of Official Analytical Chemists, 15th ed AOAC, Virginia.

Babayan VK, Koottungal D, Halaby GA. 1978. Proximote analysis, fatty acid and amino acid composition of Nigella. sativa L seeds. Journal of Food Science 43, 1314-1319. doi:10.1111/j.1365-2621.1978.tb15297.x

Baumgart J. 1993. Mikrobiologische Untersuchung von Lebensmitteln, Behr’s Verlag, Hamburg. Hampson JW, Fox JB, Lakritz L, Thayer DW. 1996. Effect of low dose gamma radiation on lipids in five different meats. Meat Science 42, 271-276.

Hanafy MSM, Hatem ME. 1991. Studies on the antimicrobial activity of Nigella sativa seed (black cumin). Journal of Ethnopharmacology 34, 275-278. doi:10.1016/0378-8741(91)90047-H

IUPAC 1987. Standard Methods for the Analysis of Oils, Fats and Derivatives International Union Pure and Applied Chemistry Division Commission on Oils, Fats and Derivatives, 7th ed, Blackwell Jevent Publishers, Oxford.

Läubli MV, Bruttel PA, Schalch E. 1988. A modern method of determining the oxidative stability of fats and oils. Food Marketing and Technology March 16-18.

Loaharanu P. 1990. Role of irradiation to facilitate international trade in pepper. 15th Peppertech and 2nd Pepperxim meet Convened by the Int Pepper Community (IPC) London, 21-25 May.

Nergiz C, Ötles S. 1993. Chemical composition of Nigella sativa L. seeds. Food Chemistry 48, 259-261. doi:10.1016/0308-8146(93)90137-5

Pearson AM, Gray JI, Wolzak AM, Horenstein NA. 1983. Safety implications of oxidized lipids in muscle foods. Food Technology July, 121-129.

Riaz M, Syed M, Chaudhary FM. 1996. Chemistry of the medicinal plants of the genus Nigella. Hamdard Medicus 39, 40-45.

Siddiqui AA, Sharma PKR. 1996. Clinical importance of. Nigella sativa L. a review. Hamdard Medicus 39, 38-42.

Sorenson S. 1989. Heat sterilization of spices. First meet. Pepper Exporters Importers Traders Grinders organized by the Int Pepper community, Bali, Indonesia, 1-2 June.

Takruri HRH, Dameh MAF. 1998. Study of the nutritional value of black cumin seeds (Nigella sativa L.). Journal of the Science of Food and Agriculture 76, 404-410. doi:10.1002/(SICI)1097-0010(199803)76:3<404::AID-JSFA964>3.0.CO;2-L

Üstün G, Kent L, Çekin N, Civelekoglu H. 1990. Investigation of the technological properties of Nigella sativa (Black Cumin) seed oil. J.A.O.C.S. 67, 958-960.

Wen HW, Chung HP, Chou FI, Lin I, Hsieh PC. 2006. Effect of gamma irradiation on microbial decontamination, and chemical and sensory characteristic of lycium fruit. Radiation Physics and Chemistry 75, 596-603. doi:10.1016/j.radphyschem.2005.12.031

Wills PA. 1983. Radiation microbiology in food preservation. In: Proc. Natl. Symp. Ionizing Energy Treatment of Foods, Sydney, Australia, 5-6 Oct 1982, pp 19-26.

Worthen DR, Ghosheh OA, Crooks PA. 1998. The in vitro anti-tumor activity of some crude and purified components of blackseed, Nigella sativa L. Anticancer Research 18, 1527-1532.




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