Applications of Sensory Evaluation

Instrumental tests o difficult to integrate all

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Unformatted text preview: roducts and “in spec” products • standard protocol for sample handling and evaluation • independent judgements – no discussion • used for fish inspection in Canada (canned fish) • advantages: o easy o for simple products with few variables • disadvantages: o does not provide direction for fixing problem o difficult to relate to instrumental tests o difficult to integrate all characteristics for quality and still provide an indication of individual problems Rating for Overall Degree of Difference • compared to a standard or control product • need a constant “gold standard” • used for products where there is a single sensory characteristic or few characteristics which will vary • panellists must be: o trained with references o shown samples that represent each point on the scale • scale must have a cutoff for unacceptable products • a blind control must be evaluated during every test session o establishes baseline • disadvantages: o doesn’t provide any diagnostic information o attributes must be weighted as to importance in the quality attribute Quality Ratings • trained or expert judges • must have a mental standard...
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