الفهرس 
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Abstract
Our work was concerned with the quality assurance and quality control of both milk and dairy utensils by detection, isolation and identification of moulds and yeasts. One hundred random samples, fifty each of dairy utensil rinses and farm bulk milk were obtained from different sources and examined mycologically for presence of mould and yeast contamination Moulds and yeasts were found to be present in 96 % and 58 %, respectively of examined rinse samples with maximum, minimum and mean count for mould / ml rinse solution were 6 x 105, 0.2 x 102 and 1.98 x 104 ± 1.2 x 104, respectively. The maximum yeast count / ml rinse solution
was 1.5 x 105, the minimum was 0.1 x 102 and the mean was 4.41 x 103 ± 2.98 x 103. Moulds and yeasts were found to be present in 94 % and 58 % respectively of examined milk samples with maximum, minimum and mean count for mould /
ml. milk were 3 x 105, 0.1 x 102 and 1.68 x 104 ± 0.67 x 104, respectively. The maximum yeast count / ml. milk was 1.8 x 103, the minimum was 0.2 x 102 and the mean was 4.58 x 102 ± 2.08 x 102. The genera Aspergillus, Penicillium, Geotrichum, Mucor, Rhizopus and Cladosporium could be isolated from both dairy utensil rinse samples and milk samples at varying percentages ranging from 2 - 78 %, while Acremonium proved to be exist in 2 % of examined milk samples only. Alternaria and Ulocladium exist in 6 % and 2 % of examined rinse samples, respectively. Aspergillus niger A. fumigatus, A. flavus and A. versicolour could be isolated from both rinse and milk samples at percentages of 76 %, 44 %, 52 % and 2 % of examined rinse samples, respectively. It found at 78 %, 46 %, 18 % and 10 % of examined milk samples, respectively. A. candidus isolated at 2 % of examined rinse samples only. A. ochracious and A. terreus were isolated only from milk samples at 12 % and 4 %, respectively. Penicillium citrinum, P. funiclosum and P. chrysogenum could be isolated from both rinse and milk samples at percentage of 10 % , 10 % and 2 % of examined rinse samples, respectively and 6 % , 12 % and 4 % of examined milk samples, respectively. P. regulosum and P. oxalicum were isolated only from milk samples at 6 % and 8 %, respectively. Geotrichum candidum, Mucor, Rhizopus and Cladosporium were isolated at 16 % , 20 % , 16 % and 4 % of examined rinse samples and 20 %, 12 %, 6 % and 14 % of examined milk samples, respectively. The genera Candida, Torulopsis, Saccharomyces, Rhodotorula, Cryptococcus and Endomycopsis could be isolated from both rinse and milk samples at varying percentages ranging from 2 - 20 %.