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