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العنوان
Quality evaluation of the imported frozen fish’s consignment /
المؤلف
Harydi, Ayman Mohamed.
الموضوع
Frozen fish.
تاريخ النشر
2010 .
عدد الصفحات
197 p. :
اللغة
الإنجليزية
الدرجة
ماجستير
التخصص
Small Animals
تاريخ الإجازة
25/9/2010
مكان الإجازة
جامعة قناة السويس - كلية الطب البيطري - FOOD HYGIENE & CONTROLE
الفهرس
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Abstract

This study was conducted to evaluate the quality of the imported
frozen fish’s consignment to Egypt. A total. of 675 imported frozen fish
samples from different origins were. collected on arrival to Sokhna port,
Suez city - Egypt. Sensory, bacteriological, and chemical analysis were
then done according to the Egyptian Official Standards. The incidence of
sensory rejection was found to be (0.40, 1.48, 3.0, and 1:67%) in whole
shrimp, peeled shrimp, whole fish, and fish fillets, respectively. The mean
values of total aerobic count, Coliforms, and Staphylococcus aureus counts
were found to be (4.86, 1.41, and 2.45) in whole shrimp, (4.96, 1.68, and
2.77) in peeled shrimp, (5.06, 1.62, and 2.52) in whole fish, (5.42, 1.84,
and 2.68) in fish fillets, (4.40, 1.54, and 2.35) in sepia, (4.36, 1.45, and
2.32) in calamari, (2.64, <1, and <1) in crab, and (4.53, <1, and 2.37) log
CFU/g in lobster, respectively. The prevalence of Salmonella spp., E.coli,
Listeria monocytogenes, Vibrio parahaemolyticus were found to be (1.6,
4:4,1.2 and 5.2%) in whole shrimp, (3.7, 7.41,4.44 and 7.41%) in peeled
shrimp, (2.0,5.0,2.0 and 8.0%) in whole fish, (l0, 15,6.67 and 6.67%) in
fish fillets, and (1.67, 3.33, 0.0 and 1.67%) in sepia, respectively.
Meanwhile in calamari; Salmonella prevalence was found to be 4.0%. All
the samples tested were free from Shigella spp. The mean values of
trimethylamine were found to be (8.62, 8.18, 8.65, and 9.01) mg/l00gm in
whole fish, fish fillets, crab, and lobster samples, respectively. the mean
values of total volatile base nitrogen were (40, 38.8, 28.2,27.4,26.8,23.5,
35.2, and 38.7) mgllOOgm in whole shrimp, peeled shrimp, whole fish, fish
fillets, sepia, calamari, crab, and lobster samples, respectively. The mean
values of thiobarbituric acid were (0.38, 0.35, 0.43, 0.40, 0.34, and 0.38)
mg malondhide/kg in whole shrimp, peeled shrimp, whole fish, fish fillets,
crab, and lobster samples, respectively.