Food Quality (2)-Shelf Life

Food Quality (2)-Shelf Life - Food Quality and...

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(cont) “Food quality” is the sum of many factors Many, but not all, of these factors can be objectively measured All foods deteriorate over time by one or more definable mechanisms What is important is the rate of deterioration Food Quality and Deterioration (con’t)
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Stability of Foods Shelf Life Time required for a given food to deteriorate to an unacceptable condition, under specific conditions of initial quality, packaging, processing and storage Food Quality & Deterioration (cont)
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Quality Value Time MAQ Shelf Life Slope = Δ Q / Δ T MAQ: Minimum Acceptable Quality
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Shelf Life Time required for a given food to deteriorate to an unacceptable condition (the “MAQ”) Questions: Unacceptable to whom? What quality factor(s) are appropriate to use as MAQ? How is the MAQ parameter, and its value, determined?  
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Regulatory entities  (e.g maximum cfu/ml milk) Just Noticeable Difference (JND) Sensory panels               Expert (trained) vs. Consumer panels  Customer complaints
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Food Quality (2)-Shelf Life - Food Quality and...

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