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How to ferment native fruits for food preservation
Contributed by: Kay
  • 1. What is the primary purpose of fermenting fruits?
A) Preservation
B) Increasing Fiber
C) Sweetening
D) Color Enhancement
  • 2. Which microorganism is primarily responsible for fruit fermentation?
A) Lactic Acid Bacteria
B) Yeast (in certain cases)
C) Mold
D) Virus
  • 3. What is the role of salt in fruit fermentation?
A) Inhibits undesirable bacteria
B) Speeds up fermentation
C) Adds sweetness
D) Neutralizes acids
  • 4. What is the ideal temperature range for most fruit fermentations?
A) 80-90°F (27-32°C)
B) 32-40°F (0-4°C)
C) 100-110°F (38-43°C)
D) 60-75°F (15-24°C)
  • 5. What type of container is best for fruit fermentation?
A) Aluminum
B) Glass or food-grade plastic
C) Copper
D) Unlined ceramic
  • 6. Why is it important to keep fruits submerged during fermentation?
A) To prevent nutrient loss
B) To increase acidity
C) To speed up fermentation
D) To prevent mold growth
  • 7. What is the role of an airlock in fruit fermentation?
A) To add oxygen to the fermentation
B) To filter out bacteria
C) To allow gases to escape while preventing oxygen entry
D) To keep the temperature constant
  • 8. What does 'inoculation' mean in the context of fermentation?
A) Adding starter cultures
B) Adding spices
C) Adding sugar
D) Adding salt
  • 9. What is a 'brine' in fermentation?
A) A solution of sugar and water
B) A solution of vinegar and water
C) A solution of salt and water
D) A solution of lemon juice and water
  • 10. Which of these is a potential sign of spoilage during fermentation?
A) Sediment formation
B) Bubbling
C) Mold growth
D) Cloudiness
  • 11. What is the purpose of 'burping' a fermentation jar?
A) To stir the contents
B) To release built-up gases
C) To add more oxygen
D) To check the temperature
  • 12. Which fruit is commonly fermented into sauerkraut-like product?
A) Apple
B) Mango
C) Banana
D) Orange
  • 13. What is the benefit of using whey in fruit fermentation?
A) Adds color
B) Adds beneficial bacteria
C) Adds sweetness
D) Adds fiber
  • 14. What is a common ratio of salt to water for a basic fruit fermentation brine?
A) No salt needed
B) 2-5% salt
C) 0.5% salt
D) 10-15% salt
  • 15. Which native fruit is suitable for pickling through lacto-fermentation?
A) Ripe Mango
B) Ripe Banana
C) Green Papaya
D) Avocado
  • 16. How does fermentation affect the vitamin content of fruits?
A) Only affects water-soluble vitamins
B) Can increase certain vitamins
C) Has no effect on vitamins
D) Always decreases vitamin content
  • 17. What is the role of sugar in fruit fermentation?
A) Provides food for microorganisms
B) Adds structure to the product
C) Neutralizes acids
D) Inhibits microbial growth
  • 18. What is the 'bloom' on some fruits, and should it be removed before fermentation?
A) A type of mold, remove it.
B) Added preservative, remove it.
C) A natural wax coating, leave it on.
D) A pesticide residue, remove it.
  • 19. What type of salt should be avoided in fermentation?
A) Iodized salt
B) Pickling salt
C) Kosher salt
D) Sea salt
  • 20. What is a sign that fermentation is complete?
A) Reduced bubbling
B) Formation of more mold
C) Brighter color
D) Increased bubbling
  • 21. Can you ferment overripe fruits?
A) Only if cooked first
B) Yes, but monitor closely for spoilage
C) Yes, they always ferment faster
D) No, they are always unsuitable
  • 22. What is the role of spices like ginger or chili in fruit fermentation?
A) Speed up fermentation
B) Preserve color
C) Add flavor and antimicrobial properties
D) Neutralize acidity
  • 23. What is the 'lacto' in 'lacto-fermentation' referring to?
A) Lactobacillus bacteria
B) Lactic acid
C) Milk products
D) Lactose sugar
  • 24. Why is it important to use clean equipment in fruit fermentation?
A) To improve flavor
B) To prevent contamination
C) To speed up fermentation
D) To increase acidity
  • 25. How long does fruit fermentation typically take?
A) 1-2 days
B) A few hours
C) Months to years
D) Several days to weeks
  • 26. What happens to the pH level of fruit during fermentation?
A) It fluctuates randomly
B) It stays the same
C) It increases (becomes more alkaline)
D) It decreases (becomes more acidic)
  • 27. How should fermented fruits be stored after fermentation?
A) At room temperature
B) In a warm place
C) Refrigerated
D) Frozen
  • 28. What is a common fruit that can be fermented into a vinegar?
A) Apple
B) Mango
C) Coconut
D) Banana
  • 29. What does it mean to 'backslop' in fermentation?
A) Reversing the fermentation process
B) Using some of a previous batch to start a new one
C) Filtering the ferment
D) Adding sugar after fermentation
  • 30. What is the main reason for weighting the fruits down with a weight during fermentation?
A) To slow down the fermentation process.
B) To prevent the jar from cracking.
C) To speed up the fermentation process.
D) To keep the fruit submerged under the brine
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