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Microbio > Unit 4: Chapter 40 > Flashcards

Unit 4: Chapter 40 Flashcards

1
Q

Microbial growth is controlled by

A

intristic factors

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2
Q

intristic factors

A

factors related to food itself which is hard to manipulate

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3
Q

Carbohydrate rich food show spoilage by

A

fungi

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4
Q

____ produce enzymes to dehydrate carbohydrates in skin and then for ____ to colonize food

A

molds, bacteria

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5
Q

Molds in carbohydrate rich food

A

produce enzymes to degrade carbohydrates in skin

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6
Q

Bacteria in carbohydrate rich food

A

Used to colonize food

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7
Q

Food contains ___ and _____ that support bacterial growth

A

proteins, fats

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7
Q

Putrefaction

A

anaerobic breakdown of proteins by bacteria which yields bad smell

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8
Q

Unpasterurized milk spoilage

A

Acid production followed by growth of acid tolerant organisms

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9
Q

What is responsible for making milk clear?

A

Proteins and fat which coagulate

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10
Q

Low pH favors

A

yeast (unicellular fungi)

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11
Q

High pH favors

A

bacteria

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12
Q

Griding of food impact

A

increases surface area and distribute microbes to help with growth

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13
Q

E. coli: 0157: H7

A

pathogenic E. Coli
comes from undercooked hamburger patty and beef
has toxin shiga LIKE toxin!

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14
Q

E. coli: 0157: H7 has what type of toxin

A

shiga like toxin

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15
Q

Zoonotic Diseases

A

Transmission from animal to human

16
Q

Food intoxication

A
  • no organism ingested
  • poison/ toxin entry from food
  • produces symptoms shortly
    Ex. S Aureus
17
Q

S. Aureus

A

pathogenic
Entertoxin
Superantigen (exotoxin)

18
Q

Food Borne infection

A

ingestion of pathogen which makes symtpoms take longer

Ex. Listeriosis

19
Q

Fungus dervied toxins include

A

aflatoxins and fumosins

20
Q

Aflatoxins

A

cacrinogens produced in fungus contaminated grains and nut productions

21
Q

Aflatoxins are produced from what

A

aspergillus has very flat ring structure which causes frameshift mutation

22
Q

Fumonisins

A

produced in fungus infected corn

Microbio (18 decks)

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