نوع مقاله : مقاله پژوهشی
نویسندگان
1 دانش آموخته کارشناسی ارشد فرآوری محصولات شیلاتی، دانشکده منابع طبیعی، دانشگاه زابل، زابل، ایران.
2 دانشیار، گروه شیلات، دانشکده منابع طبیعی، دانشگاه زابل، زابل، ایران.
3 دانشیار، گروه شیلات، دانشکده منابع طبیعی، دانشگاه تهران، کرج، ایران.
چکیده
کلیدواژهها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
Due to the potentiality and rapid spoilage of edible aquatic, many technologies have been developed to increase their shelflife. In this research, the effect of modified atmosphere (40% carbon dioxide and 60% nitrogen), vacuum and air atmosphere packaging on the physical, chemical and microbiological changes of Oncorhynchus mykiss fillet during refrigerated storage (4°C) were studied. Chemical (total volatile base nitrogen (TVB-N) and thiobarbituric acid (TBA)), physical (pH, drip loss and colorimetry) and microbial parameters (total bacterial count (TVC) and psychrotrophic count (PTC)) were measured at 0, 3, 6, 9, 12, 15 and 18 days. The results showed that the fillets packed with modified atmosphere maintained the quality and pysical properties of fillets for 15 days. While the quality and pysical properties of control samples strongly decreased (P<0.05) after 6 days. The growth of microbil load of samples packed in modified atmosphere was slower than the two type of other packaging (P<0.05). Results showed the quality of samples packed in modified atmosphere is better than vacuum and air packaging at the end of storage.
کلیدواژهها [English]