Determination of the Levels of Selected Trace HeaMetals and Fat Content in Commercially Available Milk Brands in Addis Ababa City, Ethiopia.
| dc.contributor.advisor | Yohannes, Weldegebriel (PhD) | |
| dc.contributor.author | Mihretu, Teshale | |
| dc.date.accessioned | 2019-10-07T07:37:57Z | |
| dc.date.accessioned | 2023-11-09T16:18:34Z | |
| dc.date.available | 2019-10-07T07:37:57Z | |
| dc.date.available | 2023-11-09T16:18:34Z | |
| dc.date.issued | 2018-04-02 | |
| dc.description.abstract | Six different pasteurized milk brands were analyzed for their trace heavy metals concentration and fat content. The concentration of heavy metals such as Zn, Cu, Cr, Cd, Pb and Ni was determined by using flame atomic absorption spectrophotometer. The elements Cu, Cr, Cd, Pb and Ni were not detected in all milk brands under the study. The concentration of zinc in Etete, Family, Harme, Shola, Holland and Mama milk brands were found to be 3.31± 0.671, 3.31± 0.408, 2.12 ± 0.692, 2.26 ± 0.224, 2.42 ± 0.731 and 1.93 ± 0.382 in μg/g, respectively. There is no significant difference at 95% confidence interval (p > 0.05) in the mean concentrations of zinc among the milk brands. The results obtained for the detected element in the present study were also compared with European Food Safety Authority maximum permissible limit to check whether it is below or above the set limit and were found below the allowed recommended limit. The validity of the digestion process was checked by recovery test. The percentage recovery of zinc was found to be 98.87% which is found in the acceptable range. The fat content of each milk brand was determined and found to be 2.4%, 2.8%, 2.8%, 2.8%, 2.6% and 3% in Etete, Family, Shola, Harme, Holland and Mama, respectively. The fat content of the different milk brands were found to be in the order of Mama > Family = Shola = Harme >Holland > Etete. The analysis of variance result showed that no significant difference was observed in the mean amount of fat content among all milk brands. | en_US |
| dc.identifier.uri | http://etd.aau.edu.et/handle/12345678/19318 | |
| dc.language.iso | en | en_US |
| dc.publisher | Addis Ababa University | en_US |
| dc.subject | Heavy Metals | en_US |
| dc.subject | Pasteurized Milk | en_US |
| dc.subject | Acid Digestion | en_US |
| dc.subject | Faas | en_US |
| dc.subject | Fat Content | en_US |
| dc.title | Determination of the Levels of Selected Trace HeaMetals and Fat Content in Commercially Available Milk Brands in Addis Ababa City, Ethiopia. | en_US |
| dc.type | Thesis | en_US |