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Food Microbiology > Pgs. 8-11 > Flashcards

Pgs. 8-11 Flashcards

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1
Q

-Strict Aerobe
-Psychrotrophic
-spoil refrigerated fresh meats
-calcoaceticus

A

Acinetobacter

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2
Q
  • coccobacilli
  • Psychotropic and no growth at 35 C (5 to 20 optimal)
  • spoil fish, red meats and poultry products
A

Psychrobacter

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3
Q
  • coccobacilli
  • Mesophilic (optimum 37 C)
  • animal disease causing (cows, sheep, pigs)
  • also human pathogens
  • brucellosis
A

Brucella

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4
Q
  • flagellum
  • mesophilic
  • Found in intestinal tract of humans, animals, birds
  • unpasteurized milk and undercooked poultry meat
A

Campylobacter

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5
Q
  • Rods
  • Mesophilic
  • Intestinal track of humans, animals, birds
  • coliform (indicator organism)
  • ferundii
A

Citrobacter

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6
Q
  • Mesophilic
  • Found in intestinal track of humans, warm blooded animals, birds, environment
  • many strains are non pathogenic
  • some are pathogenic to man and animals
  • coliform; indicator organism
  • Escherichia Coli
A
  • Escherichia
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7
Q
  • Mesophilic
  • found in intestinal track of humans, animals and birds
  • coliform
  • enterobacter aerogenes
A

enterobacter

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8
Q
  • capsulated rods
  • Mesophilic
  • intestinal track of humans, animals, birds, soil water and grains
    -klebsiella pneumoniae
A

Klebsiella

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9
Q
  • Mesophilic
  • intestinal tract of humans, animals, birds and the environment
  • cause spoilage if refrigerated meats and vegetable products
  • Hafnia alvei
A

Hafnia

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10
Q
  • 2000 serovars; human pathogens
  • found in intestinal track if humans, animals, birds, and insects
  • major cause of foodborne disease
  • S. enteritidis, S. typhimurium
A

Salmonella

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11
Q
  • 2000 serovars; human pathogens
  • found in intestinal track if humans, animals, birds, and insects
  • major cause of foodborne disease
  • S. enteritidis, S. typhimurium
A

Salmonella

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12
Q
  • Mesophilic
  • in intestinal track of humans and primates
  • associated with foodborne disease
  • shigella dysenteriae
A

Shigella

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13
Q
  • Mesophilic, some are psychrotropic
  • found in intestinal track of humans and animals, and in the environment
  • many involved in food spoilage
  • proteus vulgaris
A

Proteus

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14
Q
  • psychrotropic (can grow at 1 C)
  • found in intestinal track of animals
  • associated with foodborne disease
  • Yersinia enterocolitica
A

Yersinia

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15
Q
  • form pink or red colonies on agar media
  • occur in the environment
  • some can grow at refrigerator temperatures
  • food spoilage organism
  • Serratia liquefaciens; Serratia marcesens
A

Serratia

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16
Q
  • Mesophilic
  • some species need NaCl for growth
  • some species are human pathogens
  • V. cholerae, V. parahemolyticus, V. vulnificus
  • some cause food spoilage - V. alginolyticus
A

Vibrio

17
Q
  • pyschrotrophic
  • found in intestinal tract of fish
  • some are fish pathogens
  • foodborne pathogens
  • Aeromonas hydrophilia
A

Aeromonas

18
Q
  • Mesophilic
  • found in surface water, soil, fresh water fish and aquatic animals
  • more prevalent during warmer seasons
  • foodborne pathogen
  • Plesiomonas shigelloides
A

Plesiomonas

19
Q
  • small gram-negative bacteria
  • parasites; multiply only in living cells
  • transmitted by lice, fleas, ticks & mites
A

Rickettsias

20
Q
  • small gram-negative rods
  • Mesophilic (optimum 32-35 C)
  • more heat resistant than many pathogenic bacteria
  • destroyed by pasteurized (62.8 C, 30 min)
  • coxiella burnetti (infection in cattle)
A

Coxiella

21
Q

GRAM-POSITIVE COCCI
- aerobic
- Mesophilic
- found in skin of mammals
- some produce yellow colonies
- can cause food spoilage
- micrococcus luteus

A

Micrococcus

22
Q
  • usually in clusters (grape-like)
  • facultative anaerobes
  • can grow in 10% NaCl
  • found on skin of humans, animals and birds
  • S. aureus frequently involved
  • S. carnosus - used to produce fermented sausages
A

Staphylococcus

23
Q
  • spherical
  • facultative anaerobes
  • some are present as commensals in human respiratory tract
  • streptococcus pyogenes
  • streptococcus thermophilus
    Produces lactic acid
    Dairy fermentation
    Can grow at 50 C
A

Streptococcus

24
Q
  • facultative anaerobes
  • Mesophilic
  • found in intestinal track
  • indicator organism
  • can cause food spoilage
  • enterococcus faecalis
A

Enterococcus

Food Microbiology (8 decks)

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