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