The antimicrobial activity of essential oils extracted from a variety of aromatic plants, often used in the Portuguese gastronomy was studied in vitro by the agar diffusion method. The essential oils of thyme, oregano, rosemary, verbena, basil, peppermint, pennyroyal and mint were tested against Gram-positive (Listeria monocytogenes, Clostridium perfringens, Bacillus cereus, Staphylococcus aure...

The role of sensory-affective bias and of two types of experience (simple exposure to an odor and exposure to an odor in association with conspecifics) in the establishment and maintenance of preference of rat pups for odorants was investigated. (a) Simple exposure of pups to a mildly aversive odorant (peppermint extract) from birth to 21 days of age was sufficient to establish a preference for...

Recent studies showed that self-other integration, as indexed by the joint Simon effect (JSE), can be modulated by biasing participants towards particular (integrative vs. exclusive) cognitive-control states. Interestingly, there is evidence suggesting that such control states can be induced by particular odors: stimulating odors (e.g., peppermint aroma) seem to induce a more focused, exclusive...

This paper aims to evaluate the impact of cetane improvers on combustion, performance and emission characteristics a compression ignition engine fueled with 20% peppermint bio-oil/diesel blend (P20). It is hypothesized that low viscosity boiling point oil could improve atomization fuel. However, usage restricted due its index. To this, Diethyl Ether (DEE) Di- tertiary Butyl Peroxide (DTBP) are ...

The essential oils of peppermint and spearmint are distinguished by the position of oxygenation on the constituent p-menthane monoterpenes. Peppermint produces monoterpenes bearing an oxygen at C3, whereas spearmint produces monoterpenes bearing an oxygen at C6. Branching of the monoterpene biosynthetic pathways in these species is determined by two distinct cytochrome P450s that catalyze the r...