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Sensory Analysis Testing - Coggle Diagram
Sensory Analysis Testing
scientific discipline used to measure, analyse and interpret reactions to the characteristics of food, as perceived by our sense of sight, sound, smell, taste and touch
organoleptic properties are sensory properties of food that are detected by the sense organs eg: appearance, flavour, texture, aroma, mouthfeel, and aftertaste
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PREFERENCE TESTS
purpose - to find out which food product is preferred, or if a food product is acceptable
types - paired preference tests, hedonic rating scale, and preference ranking test
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IMPLEMENTATION OF TESTS
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- give instructions to testers
- testers taste samples in order given and cleanse palate between samples
- testers record their responses on scoresheets
- responses are collated onto record sheets
- codes are revealed, and test results
are calculated and presented
NECESSARY CONDITIONS
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timing - mid-morning, neither too full nor too hungry
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containers - same size and shape,
clear or white
food samples - uniform shape, colour, and amount
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coding of samples - shapes, letters,
three-digit numbers
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PAIRED PREFERENCE TESTS
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two different samples of a product are given eg: full-fat and low-fat biscuit. tester is instructed to taste both and identify which they prefer
HEDONIC RATING SCALE
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one or more samples of a food product are given. the tester is instructed to taste the sample and rate how much they like / dislike it on the accompanying verbal / pictorial scale
PREFERENCE RANKING TEST
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two or more samples of a product given. tester is instructed to taste the samples and rank preference in first, second, third place
DIFFERENCE TESTS
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types - simple difference paired comparison test, directional paired comparison test, triangle test
DESCRIPTIVE RATING TEST
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one sample of food given. tester is instructed to rate the sample for pre-selected attributes eg: sweetness
DESCRIPTIVE RANKING TEST
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two or more samples of food product given. tester is instructed to rank samples by preference according to a particular characteristic eg: in order of saltiest
TRIANGLE TEST
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three samples given. two of three samples are identical. tester is instructed to taste samples and identify which is different
DIRECTIONAL
aim - to determine which of the samples has a greater degree of intensity in terms of particular characteristic
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SIMPLE DIFFERENCE
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two samples given. tester is instructed to taste samples and identify if both are the same or if one is different