Superfoods Quality Control & Assurance 3 — Questions and Answers
Question 1: A superfood company discovers its chlorella tablets have elevated lead levels from a single harvest. Which corrective action best demonstrates a robust QC system?
- Quarantine the batch, trace the contamination source, and retest before release (Correct answer)
- Blend the contaminated batch with clean product to dilute lead levels
- Release the product with a disclaimer label
- Switch to a cheaper supplier without testing
Correct answer: Quarantine the batch, trace the contamination source, and retest before release
Quarantine and root-cause analysis followed by retesting is the proper CAPA (Corrective and Preventive Action) response in food quality systems.
Question 2: What is the primary purpose of an incoming raw material inspection (IQC) in a superfood manufacturing facility?
- To verify supplier materials meet specifications before production begins (Correct answer)
- To test finished products before shipping
- To train new employees on handling protocols
- To calibrate manufacturing equipment
Correct answer: To verify supplier materials meet specifications before production begins
Incoming Quality Control (IQC) prevents non-conforming raw materials from entering the production line, stopping contamination and quality issues at the earliest point.
Question 3: Freeze-dried acai powder is found to have poor solubility in water compared to specifications. Which quality parameter most likely failed?
- Particle size distribution (Correct answer)
- pH level
- Microbial count
- Heavy metal content
Correct answer: Particle size distribution
Particle size directly controls solubility and dispersibility of powders; oversized or clumped particles dissolve poorly and indicate a milling or drying process deviation.
Question 4: Under FDA regulations, superfood dietary supplements must be manufactured under which mandatory set of standards?
- Current Good Manufacturing Practices (cGMPs) — 21 CFR Part 111 (Correct answer)
- Generally Recognized as Safe (GRAS) guidelines only
- ISO 9001 quality management systems
- USDA Organic handling requirements
Correct answer: Current Good Manufacturing Practices (cGMPs) — 21 CFR Part 111
21 CFR Part 111 establishes cGMP requirements specifically for dietary supplements, covering facility, personnel, equipment, and production controls.
Question 5: A lot of maca root powder fails a yeast and mold count test (result: 10,000 CFU/g; limit: 1,000 CFU/g). What is the next appropriate step?
- Place the lot on hold and conduct a full microbial investigation (Correct answer)
- Ship the product to markets with less strict regulations
- Average the result with passing lots and release
- Increase the product's expiration date to allow natural die-off
Correct answer: Place the lot on hold and conduct a full microbial investigation
A batch that exceeds microbial limits must be quarantined, and the root cause must be identified before any disposition decision is made.
Question 6: Which superfood quality attribute is best assessed by a trained sensory panel rather than a chemical instrument?
- Off-flavor and aroma defects (Correct answer)
- Lead content in parts per billion
- Vitamin C concentration
- Total polyphenol count
Correct answer: Off-flavor and aroma defects
Sensory panels are uniquely suited to detect nuanced off-flavors, rancid odors, and unusual tastes that analytical instruments cannot fully replicate.
Question 7: What does the term 'identity testing' mean in the context of superfood ingredient QC?
- Confirming that the received material is actually the declared species or substance (Correct answer)
- Verifying that the product label matches the package design
- Checking that supplier invoices match purchase orders
- Ensuring the batch number is correctly assigned
Correct answer: Confirming that the received material is actually the declared species or substance
Identity testing uses methods like DNA barcoding, FTIR spectroscopy, or microscopy to confirm the botanical or chemical identity of an ingredient before use.
Superfoods Quality Control & Assurance 3
A superfood company discovers its chlorella tablets have elevated lead levels from a single harvest.
Which corrective action best demonstrates a robust QC system?