Product Development
What the exam tests
Product Development tests the stage-gate process from concept to launch: consumer insight, formulation, sensory, shelf-life, scale-up, and regulatory fit. Questions favor practical decisions over definitions.
Core rules
- Stage-gate: discovery, scoping, business case, development, testing, and launch, with go/kill gates and defined deliverables.
- Voice of customer and QFD translate needs into technical specs; design of experiments tests multiple factors efficiently.
- Sensory methods: discriminative (triangle, duo-trio), descriptive (QDA), hedonic (9-point liking), and JAR scales for optimization.
- Shelf-life uses accelerated testing (Arrhenius/Q10) plus real-time confirmation; water activity, pH, oxygen, and light are key.
- Scale-up changes heat transfer, mixing, shear, and fill accuracy; a pilot plant is not commercial production.
- Labeling and claims must be checked before launch, not after.
Worked example
A team tests three sodium levels (300, 400, and 500 mg per serving) in a soup. The 9-point hedonic scores are 5.8, 6.4, and 6.5; JAR shows 300 mg is too low for 45% of consumers. The team selects 400 mg because it is within the liking range, meets a 25% sodium-reduction target versus the 530 mg benchmark, and passes cost and labeling review. The reasoning: optimize against consumer liking and the business target, not the single highest score.
Traps
Using preference tests to claim sensory equivalence. Treating accelerated shelf-life as final proof. Ignoring cost of goods and line capability. Launching before allergen and nutrition-panel review. Confusing a prototype with a commercially manufacturable product.