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Food Microbiology

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Food Microbiology

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Parties jouées 6 %Précision 93 Temps moyen 28:46

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Food Microbiology
 

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Food MicrobiologyVersion en ligne

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par Archangelo Louise Frane
1

invented the canning process for food preservation .

2

Steam sterilization or is the process that utilizes higher process temperatures and shorter processing times to improve the quality and safety of canned foods .

3

In terms of intrinsic parameters of microorganisms , have the widest pH tolerance .

4

Clostridium botulinum is considered as the leading pathogen of concern in - canned foods .

5

is the ratio of water vapor pressure of the food substrate to the vapor pressure of pure water at a certain temperature .

6

is a bacteria of concern because it can grow and produce enterotoxins at aw > 0 . 8 6

7

The intrinsic parameter defines as the tendency of a substance to donate or accept electrons is called

8

Bacteria thrive fastest at temperatures ranging from 4°C to 60°C which is known as the

9

Ground and whole poultry must be cooked at °F / . °C to ensure safety .

10

A food system with aw = 0 . 70 will absorb moisture and encourage spoilage when stored in environments with RH higher than

11

are antimicrobial peptides produced by bacteria to inhibit or kill closely related strains , often used as natural food preservatives .

12

/ Barrier Technology / Combination Preservation involves the use of multiple hurdles or barriers to inhibit microbial growth and extend the shelf life of food product s

13

refers to the undesirable changes that occur in food as a result of the growth of microorganisms .

14

and are primary bacteria found in the feathers of chickens .

15

The surface of a meat sample was found to have red , pink , and orange discolorations . This is most probably caused by a psychotropic bacterium named

16

Black spots in meat and poultry signifies fungal spoilage caused by

17

Thamnidium , Mucor , and Rhizopus causes a white , cottony , or fuzzy mold growth on the surface of meat stored at temperatures near or below freezing . This is known as

18

Sweet curdling in milk can be caused by and

19

Coliforms , particularly and , and Alcaligenes can cause ropiness in milk .

20

A temperature - time combination of 250°F for 3 minutes is employed to ensure commercial sterility of low - acid foods . This is called

21

differentiate bacterial species into two major groups based on the structure of their cell walls .

22

The primary stain in Gram staining is while the secondary stain is

23

is the mordant in Gram staining and is the decolorize r

24

In endospore staining , heat is the while water is the .

25

Catalase - positive bacteria are generally while catalase negative are .

26

Oxidase test is a microbiological test used to identify the presence of the enzyme

27

IMVIC stands for , , - ,

28

The IMVIC result for . is + + - -

29

E . coli exhibits a result for gas and result for acid in carbohydrate fermentation test .

30

Localization around the original point of inoculation signifies a result for motility tes t

31

The method employs the use of a statistical table to estimate the amount of microorganisms in a sampl e

32

involves the binding of a specific enzyme - linked antibody to a microorganism or microbial product in a food sample while utilizes fluorescent - labeled antibodies for the same purpose .

33

is a rapid technique used for detection and amplification of specific DNA sequence while is employed for accurate identification of microorganisms based on their DNA sequence .

34

Fungi
1 . A . and A . are primary aflatoxin - producing Aspergillus
2 . The mold used for the production of blue cheese is .
3 . is a toxin produced by Penicillium expansum and can primarily be found in rotting apple and apple products
4 . The only species of Rhodotorula that causes infections in humans is .
5 . is a film - forming yeast associated with spoilage of fermented product such as pickles
6 . The in DRBC agar is an antibiotic that inhibits bacterial growth while restricts fast - spreading fungi for better enumeration

35

Gram ( + ) Bacteria
1 . is a lactic acid bacteria that is used for meat fermentation but is a spoilage organism in beer and wine
L . . is a homofermentative Lactobacillus that is crucial for fast acidification in yogurt and cheese production
3 . The culture medium that is used for the enumeration of LABs is ( De Man , Rogosa , and Sharpe ) Agar
4 . Propionibactrium spp . are used in the production of
5 . The type of toxin that S . aureus could produce is which can cause food poisoning
6 . is a pathogenic bacteria that can survive in refrigerated temperatures and often found in raw , unpasteurized , and refrigerated ready - to - eat foods
7 . Bacillus cereus can produce enterotoxins which causes two types of syndromes : and
8 . is used as a surrogate for Clostridium botulinum when conducting thermal studies in food because it is non - pathogenic and has high heat resistanc e

36

Gram ( - ) Bacteria
1 . is a gram - negative spore - former which causes sulfide spoilage in low acid canned food
2 . are gram - negative enteric bacteria which are used as indicators of fecal contamination in food
3 . The IMVIC test result for Escherichia coli is - + - -
4 . Salmonella enterica subsp . is responsible for 99% of all human infections
5 . causes enteric typhoid fever and systemic infection
6 . In testing for E . coli broth is used for presumptive test , broth is used for confirmatory test , and streaking in is employed for completed test
7 . is used for vinegar production
8 . The leading cause of foodborne illnesses worldwide is .
9 . causes gastroenteritis related to seafood s

37

Parasites and Viruses
1 . causes abdominal pain , fever , severe diarrhea , and vomiting that is more chronic than bacillary dysentery
2 . Taenia is know as the beef tapeworm while Taenia is known as the pork tapeworm .
3 . is an intestinal roundworm and is most prevalent in regions where pork or wild game is consumed raw or undercooked
4 . are viruses which follows the fecal - oral route of transmission and causes viral gastroenteritis
5 . causes traveler's diarrhea and commonly affects infant and childre n

38

In the Philippines , the leading microbiological cause of foodborne illnesses is . While the leading chemical / toxin - based cause is

39

are natural plant toxins found in cassava , seeds of fruits like apples , and bamboo shoots .

40

are chemical antimicrobials that are used to kill or eliminate microorganisms on surfaces or equipment in the food industry .

41

is a naturally - occurring antimicrobial which is used to inhibit the growth of microorganisms that require high levels of iron .

42

Oregano contains an antimicrobial compound , , which inhibit E . coli , Salmonella , L . monocytogenes , S . aureus , ? . cereus , some yeasts , and molds .

43

are live microorganisms , typically bacteria or yeasts , that are beneficial to human health when consumed in adequate amounts .

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