Tuesday, November 22, 2011

LIST OF MICROORGANISMS INVOLVED IN FOOD CONTAMINATION:

LIST OF MICROORGANISMS INVOLVED IN FOOD CONTAMINATION:

Generally, food having more amount of nutritional compound. So, most microorganisms use our food as a source of nutrients for their own growth. The growth of microorganisms on food causes decay of the food.

Bacteria,Viruses,Fungi (Yeast and Mould),Algae and Protozoa are come under the category of microorganisms. However bacteria and fungi are important in the contamination of foods.

Bacteria:

Bacteria are unicellular, prokaryotic microorganisms. Size of bacteria are 0.5 to 1.0 mm in diameter.

Important Bacterial Genus in food contamination:

1) Acetobacter

2) Aeromonas

3) Bacillus

4) Alcaligens

5) Alteromonas

6) Campylobacter

7) Clostridium

8) Corynebacterium

9) Brevibacterium

10) Desulfotomaculum

11) Enterobacter

12) Erwinia

13) Escherichia

14) Lactobacillus

15) Halobacterium

16) Gluconobacterium

17) Klebsiella

18) Microbacterium

19) Micrococcus

20) Leuconostoc

21) Listeria

22) Propionibacterium

23) Photobacterium

24) Pediococcus

25) Mycobacterium

26) Proteus

27) Staphylococcus

28) Sporosarcina

29) Sporolactobacillus

30) Salmonella

31) Shigella

32) Pseudomonas

33) Yrsinia

34) Vibrio

35) Streptomyces

36) Streptococcus.

Note: Every Above genus having many species. Example, the Genus Escherichia having 7 species includins Eschericha coli, Eschericha albertii and the genus Salmonella having 28 species including Salmonella typhi and salmonella enterica etc.,


Important Fungi ( Mould) Genus in Food Contamination:


1) Mucour

2) Rhizopus

3) Absidia

4) Aspergillus

5) Penicillium

6) Trichothecium

7) Geotrichum

8) Neurospora

9) Botrytis

10) Trichoderma

11) Pullularia

12) cladosporium

13) Helminthosporium

14) Fusarium

Important Fungi (Yeast) Genus in Food Contamination:

1) Saccharomyces

2) Pichia

3) Candida