Malays. Appl. Biol. (1997) 26(2): 69-75
EFFECT OF GAMMA IRRADIATION IN COMBINATION WITH PACKAGING ON THE SENSORY
QUALITIES OF CHILLED CHICKEN MEAT
LATIFAH AMIN1* and NORIMAH YUSOFF2
1Matriculation Centre, Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Selangor, Malaysia
2 Malaysian Institute for Nuclear Technology Research,Kompleks Puspati 43000 Kajang, Selangor, Malaysia
ABSTRACT
Dark chicken meat (drumsticks) was gamma irradiated at 0"C and stored at 0" - 5"C up to 25 days. Samples wen withdrawn at intervals for sensory evaluation using 7-points Hedonic Scale by 10 trained panelists. A dose of 3 kGy was sufficient to prolong the shelf-lite of chilled drumsticks. Vacuum packaging besides irradiation at 0°C prevented the development of 'irradiation odor' and 'flavour'. Sensory evaluations of different attributes (appearance, odor, off-odor, flavour, off-flavour, juiciness, tenderness and overall acceptance) of the raw and cooked chicken meat showed that PE-packed unirradiated samples lasted for 3 days compared to the irradiated ones which were acceptable up to 13-21 days. Or the other hand the vacuum-packed irradiated chicken meat had a longer shelf-life of more than 25 days compared to the vacuum-packed, unirradiated samples which lasted about 6-9 days.
ABSTRAK
Daging ayam jenis gelap (bahagian paha) telah disinar gama pada suhu 0"C dan disimpan pada suhu 0"-5"C selama 25 hari. Sampel-sampel diambil pada masa tertentu untuk penilaian sensori oleh 10 ahli panel terlatih menggunakan kaedah 7-Skala Hedonik. Dos sebanyak 3 kGy didapati mencukupi untuk memanjangkan tempoh penyimpanan daging ayam sejuk-dingin. Kombinasi pembungkusan secara vakum dan penyinaran pada 0"C dapat menghindarkan masalah bau dan rasa sinaran. Ujian sensori ke atas atribut-atribut yang berlainan (rupa, bau, bau-asing, rasa, rasa-asing, kejusian, kelembutan dan penerimaan secara keseluruhan) daging ayam mentah dan yang telah dimasak menunjukkan bahawa daging ayam tak tersinar yang dibungkus dengan plastik PE hanya dapat bertahan selama 3 hari berbanding dengan daging ayam dibungkus PE dan tersinar yang masih diterima sehingga 13-21 hari. Ayam tersinar yang dibungkus dengan plastik vakum mempunyai tempoh penyimpanan melebihi 25 hari berbanding sampel kawalan yang bertahan selama 6 - 9 hari.
Key words: Chilled chicken meat, gamma irradiation, sensory qualities and packaging
REFERRENCES
ASTM Committee E-18, 1981. Guidelines for the selection and training of sensory panel member, STP 758. American Society For Testing and Materials, Philadelphia, Pa.
Basker, D., Klinger, Y.M., Lapidot, N. and Eisenberg, E.M. 1985. Effect of radiation pasteurization of chicken carcasses on the taste quality of the cooked meat. In: Food Irradiation Processing, IAEA, Vienna: 233-234.
Boisseau, P. 1994. Irradiation and the food industry in France. Food Technology, 48: 138-140.
El-Wakeil, F.A., EI-Magoli, Salwa, B.M.Salama and Nadia, A.M. Salama, 1978. Effect of radurization on the chemical, microbiological and organoleptic characteristic of poultry meat. In: Food Preservation by Irradiation 1, IAEA, Vienna, pp. 467.
Farkas, J., 1987. Decontamination including parasite control of dried, chilled and frozen foods by irradiation. Acta Alimentaria, 16 (4): 351-384.
FDA. 1990. Irradiation in the production, processing and handling of food. Food and Drug Administration Federal Regulation, 55 (85): 18537-18544.
IAEA, 1985. Food irradiation processing. Proceedings of IAEA/FAO Symposium, Washington.
Josephson, E.S., Brynjolfsson, A., Wierbicki, E., Rowly, D.B., Merrit, C. Jr., Baker.R.W., Killoran, J.J., Thomas and Miriam, H. 1973. Radappertization of meat, meat products and poultry. Proceeding Radiation Preservation of Food Symposium, Bombay, 1972, IAEA, Vienna, pp. 471.
Josephson, E.S., Bryjolfsson, A.and Wierbicki, E.1975. Use of ionising radiation for preservation of food and feed products. In: Radiation Research Biomedical, Chemical and Physical Perpectives. Academic Press, New York. pp. 96-117.
Kahan, R.S., and Howker, J.J. 1978. Low dose irradiation of fresh non-frozen chicken and other preservation methods for shelf-life extension and for improving its public-health quality. In Food Preservation by Irradiation 2, IAEA, Vienna: 221-242.
Kramer, A and Ditman, L.P. 1956. A simplified variables taste oanel method for detecting flavour changes in vegetables treated with pesticides. Food Technology, 10: 155-159.
Mercuri, A.J., Kotula, A.W. and Sanders, D.H. 1967. Low-dose ionising irradiation of tray-packed cut-up fryer chickens. Food Technology, 21: 95-98.
Proudford, R.W. 1985. Ionising energy treatment of poultry. In: Proceedings of IAEA Regional Workshop on Commercialization on Ionising Energy Treatment of Food, Wills, P., Loahararu, P and Toner, B. ( Eds. ). Lucas Heights, New South Wales, Australia: Lect. 17.
Raica, N., Jr. and Baker, R.W. 1973. The wholesomeness testing of radappertized, enzyme-inactivated beef. Proceeding Radiation Preservation of Food Symposium. Bombay, 1972, IAEA. Vienna, pp. 703.
Singh, S. 1988. Post-irradiation Chemical Analyses of Poultry: A Review. Whitshell Nuclear Research Establishment, Pinawa, Manitoba.
Thayer, D.W. and Boyd, G. 1991. Effect of ionising radiation dose, temperature and atmosphere on the survival of Salmonella typhimurium in sterile, mechanically deboned chicken meat. Poultry Science, 70: 381-388.
Thayer, D.W. 1994. Wholesomeness of irradiated foods. Food Technology, 5:132-135.
WHO, 1981. Wholesomeness of irradiated food. Report of a Joint FAO/IAEA/WHO Expert Committee. WHO Tech. Rept. Series 659. World Health Organization. Geneva.
