Lesson reader
Food Science, Preparation, and Product Quality
I.A.1 · Unit 6 of 9about 2 min · 1 objective
Unit 6 of 9
Choose the sensory test by the decision
Distinguish discrimination, descriptive, and affective tests and select the panel and controls that fit the decision.
Measure what people perceive
Sensory evaluation controls context so appearance, aroma, flavor, texture, and aftertaste can be interpreted. Discrimination tests ask whether products differ. Descriptive analysis uses trained panelists and defined attributes to characterize how they differ. Affective tests ask whether target consumers like or prefer a product. Randomize coded samples, balance serving order, standardize portion, temperature, lighting, instructions, and palate cleansing, and avoid cueing panelists. A triangle test identifies the odd sample among three; it does not measure liking. Consumer acceptance cannot be inferred from a trained panel's descriptive score, and a statistically detectable difference may be too small to matter operationally.
Lesson sourcesLesson-level sources
These references apply to the lesson as a whole.
- FDA Food Code 2022
- USDA FSIS Safe Temperature Chart
- Virginia Tech Water Activity Guidance
- Texas A&M Food Chemistry Course Materials
- Professional Baking
- IFT Emulsions: When Oil and Water Do Mix
- IFT Sensory Evaluation Techniques
- FDA Food Additives and GRAS Ingredients
- FDA How GMOs Are Regulated in the United States
Unit outline9
- Food structure determines process control
- Start with the food system, continued
- Scale formulas and control protein setting
- Structure and formulation determine food performance
- Ingredient functions guide preparation choices
- Choose the sensory test by the decision
- Safety and shelf life require matched controls
- Evaluate each food process by its evidence
- Solve product failures without weakening safety
Learning objectives6
- Explain how water, carbohydrate, protein, fat, acids, gases, and dispersed phases determine food structure, stability, and ingredient function.
- Predict how preparation methods change fruits, vegetables, sugars, grains, dairy, eggs, meats, seafood, poultry, alternatives, fats, oils, and beverages.
- Differentiate batters, doughs, and biological, chemical, mechanical, and steam leavening and select controls for desired product quality.
- Select food safety, processing, preservation, and packaging controls that address the relevant biological, chemical, and physical hazards.
- Design and interpret sensory evaluation while balancing nutrient retention, safety, yield, and consumer acceptance.
- Evaluate functional foods, food additives, biotechnology, and genetic engineering by function, evidence, safety, and regulatory context.