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Sensory Testing (Senses (People use combination of senses to decide which…
Sensory Testing
Senses
People use combination of senses to decide which food is appetising, good food should appeal to the senses: sight,smell. taste, touch
Taste: enjoyable taste, method of cooking, freshness of ingredients, choice of herbs, seasoning and flavour combinations all affect overall taste.
Sight: food looks appealing, colourful, looks fresh, attractively presented
Touch: vegetables to be crunchy, rice and pasta firm,cereals with a little crunch.
Smell: helps us taste food, can make us want to eat it, how it's cooked and flavour affect the aromas given off.
Preference test
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Paired preference test: people given two slightly different foods e.g. 2 cookies on with margarine one with butter and the taster chooses their favourite
Hedonic Rating test: people rate various foods using a scale e.g. 1-5 or hate/love. Generally given different foods to rate.
Discrimination test
Triangle test: 3 products tasted, 2 are the same and one has a tweaked recipe- taste must identify which differs from others.
A not A test, one product is tasted first,taster must taste two more products and identify which of the two is identical to the first.
Triangle tests are more reliable results as there's less chance of guessing the right answer in triangle tests.
Grading test
Rating test: tasted and testers rate characteristics e.g. spice, sweetness of the food using a scale e.g. 0-5 or smiley to sad face
Ranking test: foods are tasted and testers put foods in order from lowest to highest 1-4 for a certain characteristic and ranks for each food are totalled at the end.
Profiling test: average rating for each characteristic is worked out to create a profile of the food. Displayed visually e.g. star diagram
Human Taste
Tongues are covered in thousands of taste buds which detect 5 different things- salt, sweet, sour, bitter and umami ( savoury )
Taste buds in conjunction with olfactory receptors in the nose which detect smell to identify flavour of food
Fair and unbiased
Chosen enough tasters for panel e.g.10. Not be told what each sample is, blind test. Work on their own so not influenced by others and given clear instructions of what they need to do. Small samples given to stop them filling up final samples and should be allowed to drink water between samples to wash taste away. Carried out in clean,hygienic conditions, quiet area and similar testing areas with same lighting. When finished manufacturers use results to make changes and improve products.