Response times provide essential subthreshold perceptual data that extend beyond accuracy alone. Behavioral reaction times (RTs) were used to characterize rats' ability to detect individual odorants in a series of complimentary binary odorant mixture ratios. We employed an automated, liquid-dilution olfactometer to train Fischer 344 rats (N = 8) on an odor identification task using nonreinforce...

Odor mixture perception can be configural (the mixture is qualitatively different from the components) or elemental (the components are recognizable). Some have argued that configural properties are dependent on chemical similarity and possible overlap at the receptor level. The authors show that a binary mixture in which both components activate the same receptor (17) has a configural odor, wh...

Twenty-two experienced panelists rated odor intensity of aqueous solutions of citral, octen-1-ol-3, and hexanal. The panel assessed unmixed components and mixtures (9 binary and 4 ternary). In sensory sessions dedicated to mixtures (n = 6), evaluation was focused on one target odor, presented at a fixed concentration. All components had lower odor intensity on mixed presentations. In many cases...

Optimization of bifunctional Ni catalysts was performed to enhance the catalytic performance in one-pot synthesis commercially valuable menthol from citral. The effect nickel precursors (nitrate, chloride, acetate, and sulfate) addition bentonite clay investigated citral transformations a batch reactor at 70 °C 10 bar hydrogen, demonstrating higher activity for Ni-H-β-38-bentonite composite der...

Introduction: The presence of microbes in our environment is always a permanent public health problem. In this context, research on natural treatment, less expensive and accessible to fight these microbial germs would be beneficial. Methods: During work, molecules thiosemicarbazones due their numerous biological activities were hemi-synthesized situ the essential oil Cymbopogon citratus order e...