Lub tshuab ntawm kev ua ntawm cov khoom qab zib yog feem ntau raws li lawv lub peev xwm los khi rau cov qab zib receptors rau tib neeg saj cov buds. Thaum sweetener molecules khi rau cov receptors no, lawv ua rau cov tshuaj tiv thaiv biochemical uas kawg xa cov "qab zib" teeb liab rau lub hlwb. Vim yog cov qauv sib txawv ntawm cov khoom qab zib sib txawv, cov yam ntxwv thiab lub zog ntawm lawv cov kev khi rau cov qab zib cov khoom plig tseem sib txawv, ua rau muaj kev sib txawv ntawm cov khoom qab zib. Nws yog ib qho tseem ceeb kom nco ntsoov tias thaum cov khoom qab zib tuaj yeem mimic cov tsos ntawm sucrose, lawv lub cev metabolic pathways thiab lub cev sib txawv txawv ntawm cov ntawm sucrose.
