Detection of some pesticide residues in meat and fat tissues from rural egyptian area

One hundred and fifty random samples of local meat and fat of beef, buffaloe and mutton carcasses [50 samples of each] were examined for detection of pesticide residues qualitatively and quantitatively by using thin layer chromatography. Organochlorine pesticide residues were detected in meat and fat of examined carcasses with various levels but organophosphate pesticide residue could not be detected in any sample. The pesticide residues in examined samples were compared with the maximum residual levels of pesticide residues

Quality characteristics of marketed fish roe and caviar

Seventy random samples of fish roe and caviar [35 samples of each] were collected from different supermarkets in Cairo and Giza Governorates and subjected to microbiological and chemical exanimations. Microbiological examination revealed that the mean values of Aerobic bacterial count, Anaerobic bacterial count, coliforms count, Enterobacteriaceae count, Staphylococcus aureus count and Mould and Yeast count were 4.7x 10[2], 2.2x10[2], 3,49, l.5xl0[2] 0.08x10[2] and l.6x10[2] CFU/gm for fish roe and 2.9x10[2], 1x10[2], 1.09, 1.2x10[2], 0.006x10[2] and 0.8x10[2] CFU/gm for caviar, respectively. These mean values exceeded the permissible limits recommended by Egyptian Organization for Standardization and Quality Control [EOSQC, 1996]. The chemical examination revealed that the mean pH values of fish roe and caviar samples were 5.9 and 5.8 respectively, which were within the permissible limit recommended by EOSQC [1996]. The mean values of moisture% of fish roe and caviar samples were 42.55% and 50.1%, respectively. They were exceeded the permissible limit recommended by EOSQC [1996]. However, the mean values of sodium chloride of fish roe and caviar were 7.45% and 5.35% respectively which were within the permissible limit recommended by EOSQC [1996]. Moreover the mean values of lead, mercury and cadmium residues for fish roe were 0.105, 0.227 and 0.O7lppm, respectively. Lead residues were exceeded the permissible limits while mercury and cadmium residues were within the permissible limits recommended by EOSQC [1993]. In caviar samples, the mean values of lead, mercury and cadmium residues were 0.064, 0.162 and 0.052 ppm respectively, which were within the permissible limit recommended by EOSQC [1993]. It was found that 80% of the examined fish roe 85.7% of the examined Caviar were accepted. Therefore, the caviar samples were of higher quality than fish roe samples