Food Fermentation; Fermented Food Products and Beverages
Time Left
--:--:--
A-
A+
Switch Full Screen
Question No. 1
Marks
+1
-0
Time
0:00
☰
What is the definition of fermentation in food processing?
A.
Hydrolysis of fats using enzymes
B.
Oxidation of proteins using oxygen
C.
Conversion of carbohydrates to alcohol or organic acids using microorganisms without oxidizing agents
D.
Dehydration of sugars using heat
Question No. 2
Marks
+1
-0
Time
0:00
☰
Which types of microorganisms are primarily involved in food fermentation processes?
A.
Yeasts, lactic acid bacteria (LAB), and molds
B.
Only pathogenic bacteria
C.
Only viruses
D.
Only protozoa
Question No. 3
Marks
+1
-0
Time
0:00
☰
What are the primary purposes of fermentation in food production?
A.
Only for color enhancement
B.
Only for taste improvement
C.
Only for increasing shelf life
D.
Food preservation, enhancement of nutritional properties, and production of bioactive compounds
Question No. 4
Marks
+1
-0
Time
0:00
☰
Which factors significantly influence the fermentation process and characteristics of the final product?
A.
Only temperature
B.
Type of microorganisms, substrate composition, pH, time, and temperature
C.
Only time
D.
Only pH
Question No. 5
Marks
+1
-0
Time
0:00
☰
Which group of bacteria is most commonly used in food fermentation for producing organic acids?
A.
Sulfur-reducing bacteria
B.
Coliform bacteria
C.
Pathogenic bacteria
D.
Lactic acid bacteria (LAB)
Question No. 6
Marks
+1
-0
Time
0:00
☰
How does fermentation enhance the nutritional properties of foods?
A.
Reduced mineral content
B.
Increased toxin production
C.
Enhanced bioavailability of nutrients, increased antioxidant activity, and production of vitamins
D.
Decreased nutritional value
Question No. 7
Marks
+1
-0
Time
0:00
☰
What is the role of acetic acid bacteria (AAB) in food fermentation ecosystems?
A.
They only produce alcohol
B.
They work completely independently
C.
Acetic acid bacteria interact with yeasts and LAB to produce diverse metabolites
D.
They inhibit all other microorganisms
Question No. 8
Marks
+1
-0
Time
0:00
☰
What characteristics of fermented foods extend beyond their probiotic properties?
A.
Only color changes
B.
Complex biochemical transformations, enhanced nutrient bioavailability, and production of bioactive metabolites
C.
Only live microbe content
D.
Only texture modification
Question No. 9
Marks
+1
-0
Time
0:00
☰
Which microorganisms are the major bacteria used in yogurt production?
A.
Clostridium botulinum
B.
Salmonella
and
E. coli
C.
Bacillus cereus
D.
Lactobacillus
and
Bifidobacterium
Question No. 10
Marks
+1
-0
Time
0:00
☰
What is the unique microbial composition of kefir that distinguishes it from yogurt?
A.
Aspergillus
and
Penicillium
B.
Lactococcus
,
Saccharomyces
, and
Acetobacter
C.
Only
Lactobacillus
D.
Only
Saccharomyces
Question No. 11
Marks
+1
-0
Time
0:00
☰
Which microorganisms are primarily responsible for kimchi fermentation?
A.
Lactobacillus plantarum
and
Leuconostoc
species
B.
Aspergillus niger
C.
Bacillus subtilis
D.
Saccharomyces cerevisiae
Question No. 12
Marks
+1
-0
Time
0:00
☰
Which fungus is used in the fermentation of tempeh, a traditional Indonesian fermented soybean product?
A.
Saccharomyces cerevisiae
B.
Rhizopus oligosporus
C.
Lactobacillus
D.
Acetobacter aceti
Question No. 13
Marks
+1
-0
Time
0:00
☰
What microorganism is responsible for producing natto, the Japanese fermented soybean product?
A.
Aspergillus oryzae
B.
Bacillus subtilis
C.
Penicillium roqueforti
D.
Lactobacillus acidophilus
Question No. 14
Marks
+1
-0
Time
0:00
☰
Which microorganisms are involved in the fermentation of miso paste?
A.
Only
Lactobacillus
B.
Bacillus cereus
C.
Clostridium
species
D.
Aspergillus oryzae
and
Tetragenococcus
Question No. 15
Marks
+1
-0
Time
0:00
☰
What are the dominant bacterial genera in sauerkraut fermentation?
A.
Leuconostoc
and
Lactobacillus
B.
Bacillus subtilis
C.
Aspergillus niger
D.
Candida albicans
Question No. 16
Marks
+1
-0
Time
0:00
☰
What is the complex microbial composition of kombucha?
A.
Only
Aspergillus
B.
Only
Saccharomyces cerevisiae
C.
Yeasts (
Brettanomyces
,
Saccharomyces
) and bacteria (
Komagataeibacter
,
Acetobacter
,
Lactobacillus
)
D.
Only
Lactobacillus
Question No. 17
Marks
+1
-0
Time
0:00
☰
According to recent research on Yangjiang douchi (fermented black beans), which bacteria predominate during fermentation?
A.
Only
Lactobacillus
B.
Unclassified
Staphylococcus
,
Staphylococcus kloosii
, and
Bacillus velezensis
C.
Only
Aspergillus niger
D.
Only
E. coli
Question No. 18
Marks
+1
-0
Time
0:00
☰
Which
Lactobacillus
species increase in abundance during sour bamboo shoot fermentation?
A.
Staphylococcus aureus
B.
Clostridium perfringens
C.
Lactobacillus acetotolerans
and
Lactobacillus fermentum
D.
Bacillus cereus
Question No. 19
Marks
+1
-0
Time
0:00
☰
Which bacterial genera are involved in the fermentation of pickled vegetables?
A.
Aspergillus
and
Penicillium
B.
Only
Salmonella
C.
Lactobacillus
,
Pediococcus
, and
Enterococcus
D.
Only
Clostridium
Question No. 20
Marks
+1
-0
Time
0:00
☰
What is tempeh?
A.
A fermented vegetable from Korea
B.
A fermented fish product from Japan
C.
A fermented soybean product from Indonesia
D.
A fermented milk product from Russia
Question No. 21
Marks
+1
-0
Time
0:00
☰
What are the three main short-chain fatty acids (SCFAs) produced during fermentation?
A.
Acetate, propionate, and butyrate
B.
Methane, hydrogen, and nitrogen
C.
Glucose, fructose, and sucrose
D.
Ammonia, urea, and creatinine
Question No. 22
Marks
+1
-0
Time
0:00
☰
What are bacteriocins in the context of fermented foods?
A.
Antimicrobial peptides produced by LAB that inhibit pathogen growth
B.
Proteins from food matrices
C.
Carbohydrates produced during fermentation
D.
Lipids synthesized by yeasts
Question No. 23
Marks
+1
-0
Time
0:00
☰
Which are examples of bacteriocins produced during fermentation?
A.
Amylase and lipase
B.
Nisin and plantaricin
C.
Cholesterol and triglycerides
D.
Glucose and fructose
Question No. 24
Marks
+1
-0
Time
0:00
☰
What are exopolysaccharides (EPS) produced during fermentation?
A.
Amino acids
B.
Simple sugars
C.
High-molecular-weight polysaccharides with prebiotic and immunomodulatory properties
D.
Fatty acids
Question No. 25
Marks
+1
-0
Time
0:00
☰
Which bioactive peptides with antihypertensive properties are produced during fermentation?
A.
Val-Pro-Pro (VPP) and Ile-Pro-Pro (IPP)
B.
DNA and RNA
C.
Glucose-6-phosphate
D.
ATP and ADP
Question No. 26
Marks
+1
-0
Time
0:00
☰
What types of organic acids are produced during fermentation processes?
A.
Nitric and phosphoric acids
B.
Lactic, acetic, gluconic, and glucuronic acids
C.
Hydrochloric and sulfuric acids
D.
Only citric acid
Question No. 27
Marks
+1
-0
Time
0:00
☰
What unique compound is produced by
Bacillus subtilis
during natto fermentation?
A.
Glycogen
B.
Chitin
C.
Polyglutamic acid
D.
Cellulose
Question No. 28
Marks
+1
-0
Time
0:00
☰
Which enzyme with fibrinolytic activity is produced during natto fermentation?
A.
Nattokinase
B.
Pepsin
C.
Amylase
D.
Trypsin
Question No. 29
Marks
+1
-0
Time
0:00
☰
Which vitamins are significantly increased during fermentation processes?
A.
Only vitamin A
B.
Vitamin B complex and vitamin K
C.
Only vitamin E
D.
Only vitamin C
Question No. 30
Marks
+1
-0
Time
0:00
☰
What are the key metabolites produced during kombucha fermentation?
A.
Only carbon dioxide
B.
Only alcohol
C.
Glucuronic acid, polyphenols, and organic acids
D.
Only sugar
Question No. 31
Marks
+1
-0
Time
0:00
☰
What are the primary health benefits of consuming yogurt?
A.
Improved lactose digestion and enhanced gut barrier integrity
B.
Increased fat content
C.
Only taste improvement
D.
Reduced protein quality
Question No. 32
Marks
+1
-0
Time
0:00
☰
What health-relevant effects are associated with kimchi consumption?
A.
Only calorie reduction
B.
Anti-inflammatory effects, immune modulation, and improved fiber digestion
C.
Increased cholesterol
D.
Only sodium reduction
Question No. 33
Marks
+1
-0
Time
0:00
☰
What are the health benefits of consuming kefir?
A.
Only taste enhancement
B.
Only hydration
C.
Boosts immunity, modulates microbiota, supports digestion
D.
Only provides calories
Question No. 34
Marks
+1
-0
Time
0:00
☰
What health-promoting properties does kombucha provide?
A.
Only sugar reduction
B.
Only taste improvement
C.
Detoxification, antioxidant activity, antimicrobial effects, gut microbiota modulation
D.
Only caffeine content
Question No. 35
Marks
+1
-0
Time
0:00
☰
What are the health benefits associated with miso consumption?
A.
Only sodium content
B.
Only taste enhancement
C.
Antioxidant properties and cardiovascular health support
D.
Increased blood pressure
Question No. 36
Marks
+1
-0
Time
0:00
☰
What are the overall health benefits of consuming fermented foods?
A.
Only weight gain
B.
Only providing empty calories
C.
Only increasing cholesterol
D.
Improving digestion and lowering risk for type 2 diabetes and heart disease
Question No. 37
Marks
+1
-0
Time
0:00
☰
How does fermentation affect dietary fiber in foods like sauerkraut and kimchi?
A.
Enhanced dietary fiber bioavailability and nutrient accessibility
B.
Reduced nutritional value
C.
Decreased mineral content
D.
Increased antinutritional factors
Question No. 38
Marks
+1
-0
Time
0:00
☰
How does fermentation in sourdough bread production affect mineral bioavailability?
A.
Increased phytic acid
B.
No effect on minerals
C.
Reduction of phytic acid, enhancing mineral bioavailability
D.
Decreased mineral content
Question No. 39
Marks
+1
-0
Time
0:00
☰
What prebiotic benefits do fermented soybean products like tempeh and natto provide?
A.
Increased toxins
B.
Decreased nutritional value
C.
Reduced protein quality
D.
Increased levels of bioactive oligosaccharides that foster beneficial gut microbes
Question No. 40
Marks
+1
-0
Time
0:00
☰
What makes fermented foods naturally synbiotic?
A.
Neither probiotics nor prebiotics
B.
Only probiotics
C.
Only prebiotics
D.
Simultaneous presence of probiotics (live microbes) and prebiotics (substrates)
Question No. 41
Marks
+1
-0
Time
0:00
☰
What are the optimum conditions for aerobic solid-state fermentation of sprayed corn bran according to recent research?
A.
48 hours, 25°C, 50% moisture, 10% inoculum
B.
24 hours, 20°C, 30% moisture, 5% inoculum
C.
96 hours, 45°C, 80% moisture, 30% inoculum
D.
72 hours, 36°C, 65% moisture, and 20% inoculum
Question No. 42
Marks
+1
-0
Time
0:00
☰
What factors influence microbial interactions during food fermentation?
A.
Strain type, nutritional conditions, ecological niches, and fermentation duration
B.
Only time
C.
Only pH
D.
Only temperature
Question No. 43
Marks
+1
-0
Time
0:00
☰
What fermentation stages are used in two-stage solid-state fermentation for improving feed nutritional value?
A.
Only aerobic stage
B.
Both aerobic and anaerobic stages
C.
Only anaerobic stage
D.
No fermentation stages
Question No. 44
Marks
+1
-0
Time
0:00
☰
Which types of beer contain active cultures of live probiotic yeast?
A.
All commercial beers
B.
Only wheat beers
C.
Only lager beers
D.
Traditional Belgian beers like Hoegaarden and Westmalle Tripel
Question No. 45
Marks
+1
-0
Time
0:00
☰
What changes occur in chemical characteristics during pre-fermentation treatment of lamtoro seed for mlanding tempeh production?
A.
Only moisture increases
B.
Increased moisture, protein, and fat; decreased ash, carbohydrate, and antinutritional compounds
C.
No changes occur
D.
Only protein decreases
Question No. 46
Marks
+1
-0
Time
0:00
☰
How do microorganism populations change during pre-fermentation treatment in mlanding tempeh production?
A.
No microbial changes occur
B.
All microbes decrease
C.
Only pathogenic bacteria increase
D.
Yeast and lactic acid bacteria populations increase
Question No. 47
Marks
+1
-0
Time
0:00
☰
What are the main volatile compounds that increase during sour bamboo shoot fermentation?
A.
Acetic acid, propionic acid, and isoamyl alcohol
B.
Only methane
C.
Only carbon dioxide
D.
Only water
Question No. 48
Marks
+1
-0
Time
0:00
☰
How many volatile compound types were identified during sour bamboo shoot fermentation?
A.
Twenty-three esters, nineteen alcohols, eight ketones, six aldehydes
B.
Only ketones
C.
Only esters
D.
Only alcohols
Question No. 49
Marks
+1
-0
Time
0:00
☰
What is the detection time for viable microorganisms using Cas13a-Csm6 tandem nuclease probe in fermentation?
A.
3 days with microscopy
B.
24 hours with multiple steps
C.
1 week with culture
D.
30 minutes without nucleic acid preamplification
Question No. 50
Marks
+1
-0
Time
0:00
☰
How much does the Cas13a-Csm6 tandem system improve sensitivity for bacterial profiling compared to Cas13 alone?
A.
2-fold improvement
B.
Same sensitivity as Cas13 alone
C.
16-fold improvement compared to Cas13 alone
D.
No improvement
Question No. 51
Marks
+1
-0
Time
0:00
☰
What is the detection limit of the Cas13a-Csm6 tandem nuclease probe for viable bacteria during fermentation?
A.
0.01% of viable bacteria
B.
10% of viable bacteria
C.
50% of viable bacteria
D.
1% of viable
Lactobacillus
and
Bacillus
Question No. 52
Marks
+1
-0
Time
0:00
☰
What analytical techniques are used to characterize aroma compounds and microbial diversity in fermented foods?
A.
Only pH measurement
B.
Gas Chromatography-Mass Spectrometry/Olfactometry (GC-MS/O) and Illumina MiSeq sequencing
C.
Only taste testing
D.
Only visual inspection
Question No. 53
Marks
+1
-0
Time
0:00
☰
What technique was applied to analyze volatile compounds during sour bamboo shoot fermentation?
A.
Only pH meter
B.
Only spectrophotometer
C.
Gas Chromatography-Ion Mobility Spectrometry
D.
Only thermometer
Question No. 54
Marks
+1
-0
Time
0:00
☰
What statistical method is used to investigate correlation between microorganisms and volatile compounds in fermentation?
A.
Only standard deviation
B.
Two-way Orthogonal Partial Least Squares (O2PLS)
C.
Only correlation coefficient
D.
Simple linear regression
Question No. 55
Marks
+1
-0
Time
0:00
☰
According to EFSA's Qualified Presumption of Safety (QPS) evaluation, what is the status of
Enterococcus faecium
and
Escherichia coli
?
A.
They are excluded from QPS evaluation due to safety concerns
B.
They are always considered safe
C.
They have automatic QPS status
D.
They require no evaluation
Question No. 56
Marks
+1
-0
Time
0:00
☰
Which microorganism was granted QPS status in 2024 based on its close relatedness to other lactic acid bacteria?
A.
Salmonella enterica
B.
Lacticaseibacillus huelsenbergensis
C.
Clostridium perfringens
D.
Bacillus cereus
Question No. 57
Marks
+1
-0
Time
0:00
☰
What was the conversion rate of urea during two-stage solid-state fermentation of sprayed corn bran?
A.
90%
B.
75%
C.
20%
D.
54.8%
Question No. 58
Marks
+1
-0
Time
0:00
☰
How much did proline and arginine content increase during two-stage solid-state fermentation of sprayed corn bran?
A.
64% and 130% respectively
B.
No increase
C.
5% and 10% respectively
D.
10% and 20% respectively
Question No. 59
Marks
+1
-0
Time
0:00
☰
What is precision fermentation in the context of next-generation food production?
A.
Chemical synthesis without microbes
B.
Only natural fermentation
C.
An advanced biotechnological process using genetically engineered microorganisms
D.
Traditional spontaneous fermentation
Question No. 60
Marks
+1
-0
Time
0:00
☰
How many aroma-active compounds were detected during Yangjiang douchi fermentation?
A.
10 compounds
B.
100 compounds
C.
5 compounds
D.
78 aroma-active compounds throughout the process
Submit Test
Mark for Review & Next
Clear Response
‹ Prev
Save & Next ›
📋 Submit Test?
0
Answered
0
Skipped
60
Total
You
cannot
change answers after submission.
Cancel
Submit