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INDUSTRIAL APPLICATION OF SENSORY EVALUATION Presentation Transcript:
1.INDUSTRIAL APPLICATION OF SENSORY EVALUATION
2.NEW PRODUCT DEVELOPMENT
Some new products are unique (novel)
Most new products are imitations or variations of some established standards
Product developers need information – sensory quality and relative acceptability of experimental prototype samples as input for marketability
3.SE OF NEW PRODUCT INVOLVES:
Characterisation of product prototype samples to determine uniqueness of product (different from established products)
Evaluation of experimental prototype samples to establish whether differences exist among them
Determination of whether the prototype samples meet the acceptability requirements established for the product (eg. Whether equal or better than the standard)
4.PRODUCT MATCHING
Duplicating a standard (a prototype, a competitor’s product, etc)
Objective: To verify that there is no difference between the standard and experimental product and that the two have equivalent acceptability
5.QUALITY CONTROL
QC procedures are used during production, distribution and marketing to ensure that the end product is as good as the standard
Representative samples are usually evaluated as follows:
Difference test – to determine whether sample is different from standard
Descriptive test – to determine how sample is different from standard
6.STORAGE STABILITY
Product stability during transportation, warehousing, retailing and during home storage is essential to consumer satisfaction
7.PROCEDURE OF DETERMINING PRODUCT SHELF LIFE
Obtain representative samples
Evaluate initially
Subject samples to controlled storage conditions for subsequent tests
Withdraw storage samples at specific time intervals and evaluate. Compare with control samples
Note: control samples must be of the same production lot or batch as the samples and must be held under conditions known to maintain original quality
8.SENSORY TEST INVOLVED
Difference tests – to determine whether storage samples differ from control samples
Descriptive tests – to characterise or quantify changes that may have occurred during storage
Acceptance tests – to determine relative acceptance of stored products
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