Sanitary evaluation of frozen dessert sold at local markets

Abstract

One hundred samples of ice cream were collected randomly from Alexandria province. All samples were subjected to sanitary evaluation, chemical analysis and microbiological examination. Results revealed that the mean values of total bacterial count in examined packed ice cream samples with flavour of (choccolate, stawberry and vanilla) were (3.6x104 ± 4.8x103), (5.7 x 105 ± 4.5 x 104) and (1.5x 104 ± 6.6.×103) respectively. While in Street vended mix ice cream the mean value of total bacterial count were 1.3x106 ± 1.3x105. Results also revealed that percent of total psychotropic bacterial count of examined samples of packed ice cream with different flavour (chocolate, strawberry and vanilla) were 100% for all examined types of ice cream samples respectively, while the mean values ± SEM were (1.9 x 103 ± 5.3 x 102); (5.1 x 104 ± 3.1 x 104) and (6.9 x 103 ± 1.3 x 103) respectively. All unpacked ice cream street vended Mix were positive for psychotropic Microorganisms with a mean values of (1.3 x 105± 2.4 x 104). Results also revealed that 20 (80%) of examined unpacked street vended ice cream Mix were contaminated with coliform organisms, with a mean value of (3.1 x 104 ± 1.1 x 104). While the mean values of coliform/gm were (1.2x103 ±1.1x102) and (6.8x103 ± 2.5x103) and (9.5x102 ± 1.37x102) of packed ice cream with different flavours (chocolate, strawberry and vanilla), respectively. The mean value of Staphylococcus aureus were 3.0 x 103 ± 1.3 x 102, 1.3 x 104 ± 4.5 x 103 and 2.3 x 103 ± 6.1 x 102 , respectively, in examined packed ice cream samples. The mean value of Staphylococcus aureus in unpacked street vended ice cream was 2.6 x 103± 5.1 x 102. Also the results revealed that the incidence of Enterococcus organisms in examined samples of packed ice cream flavored vanilla was 5 (20%). The mean value of Enterococcus organisms/g was 4.1 x 102 ± 1.9 x102 in examined strawberry ice cream samples. On the other hand 12 (48%) of examined unpacked street vended ice cream Mix samples were contaminated with enterococci organisms with mean value of 1.8 x 103 ± 6.9 x 102.