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