The use of multiple preservation methods to control microorganisms in food products is known as:[Fill in the blank]

Question

BlackTom AI · Accepted Answer

Hurdle technology combines several preservation factors (hurdles) so microorganisms face multiple simultaneous stresses that prevent growth or cause death. Relevant knowledge points: common hurdles include temperature control (heat or cold), reduced water activity (drying, salt, sugar), lowered pH (acidification), antimicrobial preservatives, modified atmosphere, and processing steps (thermal, high-pressure, irradiation). The concept relies on additive or synergistic effects so that each individual hurdle can be milder than when used alone, yet together they achieve safe shelf life and quality.

Step-by-step reasoning:
1. Identify the key phrase in the question: “use of multiple preservation methods.” The phrase “multiple” points to a strategy of combining methods rather than a single technique.
2. Match that phrase to known food‑preservation terminology. “Hurdle technology” is the established term for intentionally combining preservation methods (hurdles) to control microorganisms.
3. Evaluate other options: “Storage technology” describes storage systems but not specifically combining preservation methods; “Modified‑atmosphere technology” is one specific preservation method (altering gas composition), not a multi‑method strategy; “Preservation technology” is a generic label that does not emphasize the deliberate combination of multiple stresses.
4. Conclude that “Hurdle technology” is the precise term matching the question’s description.

Why the correct answer is correct:
Hurdle technology specifically defines the practice of applying several preservation factors together (e.g., mild heat treatment + low pH + refrigeration + added preservative) so microbes must overcome multiple obstacles. This is exactly “the use of multiple preservation methods to control microorganisms.”

Why the other options are incorrect (briefly):
- B. Storage technology: too general and implies storage conditions rather than a combined preservation strategy.
- C. Modified‑atmosphere technology: a single, specific method (changing O2/CO2/N2), not multiple methods.
- D. Preservation technology: generic term; does not capture the deliberate multi‑hurdle approach.

Conclusion: The correct answer is A. Hurdle technology, which matches the provided answer.

The use of multiple preservation methods to control microorganisms in food products is known as:[Fill in the blank]Single choice

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