Ingestion of winter savory extract has been reported to inhibit the decrease in peripheral body temperature in people who experience cold sensitivity. However, the active ingredients underlying this effect are not known. We sought to elucidate the effects of the volatile components of winter savory on body temperature. Carvacrol (the main volatile component and a transient receptor potential ch...

Several chemical changes in soil are associated with plant growth-promoting rhizobacteria (PGPR). Some bacterial strains directly regulate plant physiology by mimicking synthesis of plant hormones, whereas others increase mineral and nitrogen availability in the soil as a way to augment growth. Identification of bacterial chemical messengers that trigger growth promotion has been limited in par...

Liquids like gasoline comprise a mixture of hundreds of hydrocarbon components. Gas chromatography of these complex mixtures produces highly detailed chromatograms that are characteristic of a particular sample. Although many of the volatile components will be lost during the fire, sufficient less-volatile components may have been left in partially burned wood or other materials to enable the d...

hydro-distilled volatile oils from the flowers and leaves of eupatorium cannabinum l. which gathered in touchal on mountain alborz (tehran province) in iran were investigated mainly by a combination of gc and gc/ms. thirty-nine components were identified in the oils. the main constituents of the essential oils in flowers and leaves were germacrene d (27.3%, 37.1%), gemacrene b (12.4%, 11.7%) an...

Muskmelon (Cucumis melo L.) varieties differ in a range of physical and chemical attributes. Aroma is one of the most important factors determining fruit quality and consumer preference. Volatile esters, a major class of compounds contributing to the aroma of muskmelon fruit, are synthesized by alcohol acyl-transferases (AATs). We demonstrate here that volatile aldehydes are most abundant in un...