How to ferment native fruits for food preservation
  • 1. What is the primary purpose of fermenting fruits?
A) Preservation
B) Color Enhancement
C) Increasing Fiber
D) Sweetening
  • 2. Which microorganism is primarily responsible for fruit fermentation?
A) Lactic Acid Bacteria
B) Mold
C) Virus
D) Yeast (in certain cases)
  • 3. What is the role of salt in fruit fermentation?
A) Speeds up fermentation
B) Adds sweetness
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) 80-90°F (27-32°C)
C) 60-75°F (15-24°C)
D) 32-40°F (0-4°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 increase acidity
C) To prevent nutrient loss
D) To prevent mold growth
  • 7. What is the role of an airlock in fruit fermentation?
A) To keep the temperature constant
B) To allow gases to escape while preventing oxygen entry
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 spices
C) Adding sugar
D) Adding salt
  • 9. What is a 'brine' in fermentation?
A) A solution of sugar and water
B) A solution of salt and water
C) A solution of lemon juice and water
D) A solution of vinegar 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 check the temperature
B) To stir the contents
C) To add more oxygen
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 beneficial bacteria
B) Adds sweetness
C) Adds color
D) Adds fiber
  • 14. What is a common ratio of salt to water for a basic fruit fermentation brine?
A) 2-5% salt
B) No salt needed
C) 0.5% salt
D) 10-15% salt
  • 15. Which native fruit is suitable for pickling through lacto-fermentation?
A) Avocado
B) Green Papaya
C) Ripe Banana
D) Ripe Mango
  • 16. How does fermentation affect the vitamin content of fruits?
A) Can increase certain vitamins
B) Has no effect on vitamins
C) Always decreases vitamin content
D) Only affects water-soluble vitamins
  • 17. What is the role of sugar in fruit fermentation?
A) Provides food for microorganisms
B) Neutralizes acids
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) A type of mold, remove it.
B) A natural wax coating, leave it on.
C) A pesticide residue, remove it.
D) Added preservative, remove it.
  • 19. What type of salt should be avoided in fermentation?
A) Pickling salt
B) Kosher salt
C) Sea salt
D) Iodized 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) Yes, they always ferment faster
B) No, they are always unsuitable
C) Yes, but monitor closely for spoilage
D) Only if cooked first
  • 22. What is the role of spices like ginger or chili in fruit fermentation?
A) Neutralize acidity
B) Preserve color
C) Speed up fermentation
D) Add flavor and antimicrobial properties
  • 23. What is the 'lacto' in 'lacto-fermentation' referring to?
A) Lactic acid
B) Milk products
C) Lactose sugar
D) Lactobacillus bacteria
  • 24. Why is it important to use clean equipment in fruit fermentation?
A) To improve flavor
B) To speed up fermentation
C) To prevent contamination
D) To increase acidity
  • 25. How long does fruit fermentation typically take?
A) 1-2 days
B) Months to years
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) At room temperature
D) In a warm place
  • 28. What is a common fruit that can be fermented into a vinegar?
A) Mango
B) Apple
C) Coconut
D) Banana
  • 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 speed up the fermentation process.
B) To slow down the fermentation process.
C) To prevent the jar from cracking.
D) To keep the fruit submerged under the brine
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