Afn 304: Food Microbiology And Parasitology Question Paper
Afn 304: Food Microbiology And Parasitology
Course:Bachelor Of Science In Food, Nutrition And Dietetics
Institution: South Eastern Kenya University question papers
Exam Year:2013
THIRD YEAR EXAMINATION FOR THE DEGREE OF BACHELOR OF SCIENCE(FOOD,NUTRITION AND DIETETICS)
10th September 2013 Time: 2 HOURS
ANSWER ALL THE QUESTIONS
1.Microbial analysis is an important aspect of food quality control:
(a)Explain the meaning of indicator microorganisms and give two examples. (2mks)
(b)Explain the criteria used in choice of an indicator micro organism. (8mks)
(c)Name five methods used for laboratory sterilization giving an example of application in each case. (5mks)
(d)Explain briefly the use of MPN technique in microbial analysis. (5mks)
2.Microbial growth in foods is determined by several factors.Explain how the following factors would affect the growth characteristics:
(a)Factors related to the interaction of the micro organisms. (8mks)
(b)Factors related to the food product. (12mks)
3.(a)Differentiate between food infections and food intoxications giving two examples of microorganisms in each case. (2mks)
(b)Explain how the following food pathogens occur in food,the associate health concerns and control measures:
(i)Clostridium botulinum (4mks)
(ii)Aspergillus flavus (4mks)
(iii)Lister monocytogenes (4mks)
(iv)Staphylococcus aureus (4mks)
(v)Bacillus anthracis (4mks)
(vi)Coxiella burnettii (4mks)
(vii)Taenia solium (4mks)
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