CFS Cheat Sheet 2026

The 30 highest-yield CFS facts, distilled from real exam questions. Print it, save it as a PDF, or study it here — free, no sign-up.

1. The 'first in, first out' (FIFO) inventory principle in food packaging operations is most important for: → Ensuring older products are sold before newer ones to prevent shelf life expiration
2. What does the Q10 value represent in accelerated shelf life testing? → The ratio of reaction rates for a 10°C temperature increase
3. How does pasteurization help in food safety? → By increasing the temperature to destroy harmful microorganisms
4. Enzymatic browning in cut fruits and vegetables is primarily catalyzed by which enzyme? → Polyphenol oxidase (PPO)
5. In food emulsions, which type of molecule acts as an emulsifier by possessing both hydrophilic and hydrophobic regions? → Amphiphilic molecules (e.g., lecithin)
6. What type of packaging incorporates agents that actively interact with the food or its headspace environment? → Active packaging
7. Which functional property of proteins is defined as the ability to form a stable network that traps water and fat during heating? → Gelation
8. What is the importance of the five senses in food marketing? → To enhance product appeal through sensory marketing
9. Salmonella is most commonly associated with which type of food vehicle in the United States? → Poultry, eggs, and egg products
10. What is the significance of food processing in food science? → It makes food safer, convenient, and longer-lasting
11. Hurdle technology in food preservation refers to which approach? → Combining multiple mild preservation factors that collectively inhibit microbial growth
12. Which group of bacteria forms heat-resistant endospores that survive standard pasteurization and pose a risk in canned and retorted foods? → Clostridium and Bacillus species
13. Water activity (a_w) of 0.85 is most closely associated with which type of food preservation concern? → Staphylococcus aureus growth becoming possible
14. Mesophilic bacteria, including most foodborne pathogens, have an optimal growth temperature range of approximately: → 30–45°C (86–113°F)
15. Why is temperature control critical in food safety? → To prevent bacteria growth
16. What is the purpose of packaging in food processing? → To protect and preserve food quality
17. Why is water an essential component of food science? → It is essential for cooking, digestion, and nutrient transport
18. What is the primary role of dietary fiber in the body? → It helps with digestion and lowers cholesterol
19. What is the primary purpose of sensory evaluation in food science? → To assess and improve food quality based on sensory perception
20. What temperature control principle is most critical in cleaning and sanitizing? → Maintain proper temperatures throughout receiving, storage, preparation, and service
21. The Maillard reaction in food processing involves a reaction between which two types of compounds? → Reducing sugars and amino acids
22. What information is required on a Nutrition Facts label per FDA regulations? → Serving size, calories, nutrients, percent daily values, and ingredient list
23. Trans fatty acids in food arise primarily from which industrial process? → Partial hydrogenation of unsaturated vegetable oils
24. Migration of substances from food-contact packaging materials into food is regulated in the United States primarily under: → FDA regulations under 21 CFR
25. How does dehydration preserve food? → By removing moisture to prevent microbial growth
26. What is the importance of proper storage in food safety? → To prevent spoilage and maintain food safety
27. How does the body store excess nutrients from food? → Excess nutrients are stored as glycogen or fat
28. What temperature control principle is most critical in allergen management? → Maintain proper temperatures throughout receiving, storage, preparation, and service
29. Why is the Hazard Analysis Critical Control Point (HACCP) system used in food safety? → To identify and control food safety hazards
30. What role does lecithin play when used as a food additive in chocolate manufacturing? → Emulsifier to reduce viscosity and improve flow