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