Salmonella Senftenberg is a pathogen agent causative of foodborne disease and it is considered the most heat-resistant serovar within this genus. Food industries use heat treatment and chemical antimicrobials in order to eliminate this microorganism in food, but consumers prefer natural antimicrobials as essential oils and their components. This study evaluates the combined effect of thermal tr...

Sampling of monoterpenes from air on the Tenax porous polymer may introduce analytical errors owing to oxidation and acid rearrangements on the adsorbent. Particularly terpenes which react rapidly with ozone, e.g. myrcene and limonene, are partially lost when sampling air with high photooxidant levels. On acidified adsorption cartridges, a-pinene and ~-pinene may be converted to camphene, limon...

The essential oils from four samples of Teucrium lusitanicum and one sample of Teucrium algarbiensis, grown in Algarve (southern Portugal) were analyzed by gas chromatography (GC) and gas chromatography-mass spectroscopy (GC-MS). Seventy-one volatile compounds were identified. Major compounds of T. algarbiensis oil were alpha-pinene (8.3%), sabinene (7.2%), beta-pinene (10.2%), limonene (11.8%)...

The straightforward functionalization of sterically demanding α,α-disubstituted double bonds β-pinene, (-)-limonene and terpenoids has been achieved via cross metathesis with internal olefins. reactions are catalyzed by second generation ruthenium catalysts in dimethyl carbonate as green solvent or under neat conditions. This transformation provides a clean process for the access to functionali...

Renewable natural and synthetic basic substances can be used to produce biodegradable polymers. Several methods of the polymerization terpene limonene have been evaluated. The evaluated are radical polymerization, cationic thiol-ene polymerization. free-radical with azobisisobutyronitrile (AIBN) as an initiator was carried out. out using AlCl3 a catalyst. copolymerization mercaptoethanol, 2-mer...

Abstract Background (−)-Limonene, one of cyclic monoterpenes, is an important renewable compound used widely as a key building block for the synthesis new biologically active molecules and fine chemicals. (−)-Perillamine, derived from (−)-limonene, highly useful synthon constructing more complicated functionally relevant Aim We aimed to report sustainable efficient method regiospecific C–H amin...

dracocephalum kotschyi (lamiaceae), as one of the remarkable aromatic plants, widely grows and also is cultivated in various temperate regions of iran. there are diverse reports about the composition of the oil of this plant representing limonene derivatives as its major compounds. there is no report on cloning of mono- or sesquiterpene synthases from this plant. in the present study, the aroma...

Limonene is ionized by circularly polarized 420 nm femtosecond laser pulses. Ion mass and photoelectron energy spectra identify the dominant (2 + 1) multiphoton ionization mechanism, aided by TDDFT calculations of the Rydberg excitations. Photoelectron circular dichroism measurements on pure enantiomers reveal a chiral asymmetry of ±4 %.