الفهرس 
IntroductionOnly 14 pages are availabe for public view
 |  | from | 112 |  |  |
| | | from | 112 | | |
Abstract
One hundred samples of salted Mugil cephalus & Hydrocynus froskallii (50 of each) as wellas their brine solution were collected from different localities at Zagazig markets. The collected samples were transferred under aseptic condition to the laboratory and were subjected to the chemical and microbiological examinations. The results obtained are summarized as the following: 1- Chemical studies: 1-Moisture %: The moisture % in examined Mugil cephalus flesh was ranged from 50.5% to 68.6% with an average 60.5%. The minimum, maximum and mean of moisture % in examined flesh of. Hydrocynus froskallii was 51%, 64% and 55.5%, respectively. 2-Sodium chloride %: It is evidents from the results obtained during this investigations that the sodium chloride % in examined salted Mugil cephalus fish was 9.5% as a minimum, 18.5% as a maxiumwn and 14.7% as an average. The minimum, maximum and mean of sodium chloride % in brine. Solution of examined Mugil cephalus fish was 19%, 27% and 23.5 respectively. The sodium chloride % in examined salted flesh of Hydrocynus froskallii fish was ranged from 10.5 to 18.5% with a mean value 15.9%. (69)
The minimum, maximum and mean of sodium chloride % in examined brine solution of Hydrocynus froskallii was 18%, 28% and 22.8%
respectively. 3- The sodium chloride in water phase (C%): C% was ranged from 15% to 22% with 18.9% as a mean in examined salted flesh of Mugil cephalus. While that of of C% in examined salted Hydrocynus froskallii fish was 15.5%, 22.5% and 21% respectively.
II- Microbiological findings: 1- Total colony count: The total colony count was ranged from 15x106/g to 58x107/g with 55x106/g as a mean of. examined salted Mugil cephalus fish. The minimum, maximum and the mean of total colony count in examined brine solution of Mugil cephalus fish was 9x106/ml, 18x107/m1 and 43x106/m1 respectively. The total colony in examined salted Hydrocynus froskallii fish was 5x106/g as a minimum, 27x107/g as a miximum and 15x106/g as a mean. It was ranged from 3x106/m1 to 12x107/ml with 9.5x106/ml as an average in brine. Solution of examined salted Hydrocynus froskallii fish. 2- Streptococcus faecalis: The Streptococcus faecalis count in examined salted Mugil cephalus fish was ranged from 3x103/g to 4x104/g with 17x103/g as a mean value. SUML4RY (-10) In examined brine solution of Mugil cephalus fishes the mean value of Streptococcus faecalis was 9x103/ml.
The minimum, maximum and mean of Streptococcus faecalis in examined salted Hydrocynus froskallii was 4x103/g , 22x103/g and 11.5x103/g respectively. In examined brine solution of Hydrocynus froskallii fishes was ranged from 4x103/ml to 20x 103/m1 with an average 8.5x103/m1 . 3- Staphylococcus aureus counts: The Staphylococcus aureus counts in examined samples as follow: It was ranged from 4x103 to 5x104 with a mean 15x103 in salted Mugil cephalus. It was ranged from 2x103/m1 to 20x103/ml with a mean value 8.5x103/ml in brine solution of Mugil cephalus. The minimum, maximum and mean of Staphylococcus aureus was 2x103/g , 3x104/g and 13x103/g respectively of examined salted Hydrocynus froskallii fish. The mean value of Staphylococcus aureus in examined brine solution of Hydrocynus froskallii fish was 7.5x103/ml. 4- MPN of Coliforms: The mean value of most probable number of Coliform was 3000/g, 2250/ml, 2500/g and 2000/m1 in examined salted Mugil cephalus fish, its brine solution of Mugil cephalus, salted Hydrocynus froskallii and its brine solution, respectively. S7:1 AIARY
(7 ) 5-Isolated Enterobacteriaceae and Halophilles: Micrococci, Gram +ve bacilli, Proteus vulgaris, Proteus morgani, Proteus mirabilis, Proteus rettgeri, Klebsiella aerogenes, Citrobacter freundii and Enterobacter aerogenes could be isolated from the examined samples in a varying percentages. Public health importance and suggested measures for control have been discussed. 6-Total mould and Yeast count: In examined salted Mugil cephalus fish, brine of Mugil cephalus, salted Hydrocynus froskallii fish and brine solution of Hydrocynus froskallii. The mean of total mould and yeast count was 8x103/g , 6x103/ml, 5x103/g and 3x103/ml, respectively.