How to ferment native fruits for food preservation
  • 1. What is the primary purpose of fermenting fruits?
A) Sweetening
B) Increasing Fiber
C) Preservation
D) Color Enhancement
  • 2. Which microorganism is primarily responsible for fruit fermentation?
A) Yeast (in certain cases)
B) Lactic Acid Bacteria
C) Virus
D) Mold
  • 3. What is the role of salt in fruit fermentation?
A) Inhibits undesirable bacteria
B) Speeds up fermentation
C) Neutralizes acids
D) Adds sweetness
  • 4. What is the ideal temperature range for most fruit fermentations?
A) 32-40°F (0-4°C)
B) 60-75°F (15-24°C)
C) 100-110°F (38-43°C)
D) 80-90°F (27-32°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 prevent mold growth
C) To speed up fermentation
D) To increase acidity
  • 7. What is the role of an airlock in fruit fermentation?
A) To keep the temperature constant
B) To add oxygen to the fermentation
C) To filter out bacteria
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 starter cultures
C) Adding salt
D) Adding spices
  • 9. What is a 'brine' in fermentation?
A) A solution of salt and water
B) A solution of sugar and water
C) A solution of vinegar and water
D) A solution of lemon juice and water
  • 10. Which of these is a potential sign of spoilage during fermentation?
A) Bubbling
B) Mold growth
C) Cloudiness
D) Sediment formation
  • 11. What is the purpose of 'burping' a fermentation jar?
A) To add more oxygen
B) To stir the contents
C) To release built-up gases
D) To check the temperature
  • 12. Which fruit is commonly fermented into sauerkraut-like product?
A) Orange
B) Banana
C) Apple
D) Mango
  • 13. What is the benefit of using whey in fruit fermentation?
A) Adds color
B) Adds beneficial bacteria
C) Adds fiber
D) Adds sweetness
  • 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) 0.5% salt
D) 2-5% salt
  • 15. Which native fruit is suitable for pickling through lacto-fermentation?
A) Ripe Mango
B) Green Papaya
C) Ripe Banana
D) Avocado
  • 16. How does fermentation affect the vitamin content of fruits?
A) Can increase certain vitamins
B) Always decreases vitamin content
C) Only affects water-soluble vitamins
D) Has no effect on vitamins
  • 17. What is the role of sugar in fruit fermentation?
A) Adds structure to the product
B) Provides food for microorganisms
C) Inhibits microbial growth
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) Pickling salt
B) Sea salt
C) Iodized salt
D) Kosher salt
  • 20. What is a sign that fermentation is complete?
A) Brighter color
B) Reduced bubbling
C) Increased bubbling
D) Formation of more mold
  • 21. Can you ferment overripe fruits?
A) No, they are always unsuitable
B) Only if cooked first
C) Yes, they always ferment faster
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) Add flavor and antimicrobial properties
D) Neutralize acidity
  • 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 prevent contamination
B) To improve flavor
C) To increase acidity
D) To speed up fermentation
  • 25. How long does fruit fermentation typically take?
A) Months to years
B) A few hours
C) 1-2 days
D) Several days to weeks
  • 26. What happens to the pH level of fruit during fermentation?
A) It stays the same
B) It fluctuates randomly
C) It increases (becomes more alkaline)
D) It decreases (becomes more acidic)
  • 27. How should fermented fruits be stored after fermentation?
A) In a warm place
B) At room temperature
C) Refrigerated
D) Frozen
  • 28. What is a common fruit that can be fermented into a vinegar?
A) Banana
B) Mango
C) Apple
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) Reversing the fermentation process
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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