- Verschil test = checken of er een verschil geproefd wordt
- Triangel test
- Duo test
- Gepaarde vergelijking
- Rangordening
- Beschrijvende test = sensorisch profiel opstellen
- QDA (quantitative descriptive analysis)
Proeven = reversibele chemische reactie tussen niet-vluchtige opgeloste stoffen in speeksel, water of
olie en chemoreceptoren op/in tong, gehemelte en keel
Smaak = hetgene je met smaakpapillen kan proeven (bitter, zoet, zuur, zout & umami)
- Receptorcel vangt thv microcilli de stimuli op
- Signaaltransductie = transport van stimuli (extracellulair signaal) via cellulaire acties (vrijstellen
neurotransmitters) naar zenuwstelsel
- Directe passage via ionenkanalen = zout & zuur
- Binden & blokkeren ionenkanalen = zuur & bitter
- Membraanreceptoren die via 2e boodschappersysteem kanalen openen/sluiten =
zoet, bitter & umami
- Lading van de elementen veroorzaakt depolariatie (concentratie kan gemeten worden via
elektrische geleidbaarheid, pH, …)
- Prikkel wordt via neuronen doorgegeven naar centraal zenuwstelsel -> gustatieve regio
hersenen -> respons
ZOUT
- Influx van Na bij hoge extracellulaire Na-concentratie adhv diffusie
- Depolarisatie van membraan (lading veranderd)
- Ca-kanaal geactiveerd -> Ca2+ influx -> vrijstelling neurotransmitters
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