behaviour model are used in screening program in former model plant extract or enriched fraction is applied on the tongue of anaesthetized gerbil and electrophysiological response record from chorda typhani nerve in this assay about25samples can be investicated in individual animal this study is further supplemented by conditioned taste dislike assay using gerbils that are trained to avoid sucrouse althoug combination of these two models is not ideal for evaluation of human sweet taste about60-70% of pure compound tested in gerbil respond correctly
Thus it is neccessary to consider these aspects while exporing the ethnobotanical information to avoid subsequent failure in screening program third approach is chemotaxonomic tracing but several times in given genus taste may ranges from sweet bitter astringent and probability of success is low fourth approach is random screening by organoleptic tasting especially used for undocumented swwet plants this approach is costly and difficult and needs to investigate each plant from about 2,40000 angiosperm species and behaviour model are used in screening program in former model plant extract or enriched fraction is applied on the tongue of anaesthetized gerbil and electrophysiological response record from chorda typhani nerve in this assay about25samples can be investicated in individual animal this study is further supplemented by conditioned taste dislike assay using gerbils that are trained to avoid sucrouse althoug combination of these two models is not ideal for evaluation of human sweet taste about60-70% of pure compound tested in gerbil respond correctly