Search results for "Tea tree"

showing 3 items of 3 documents

Fast authentication of tea tree oil through spectroscopy

2018

Two new procedures, based on infrared spectroscopy in the near infrared (NIR) and mid infrared (MIR), have been developed for the authentication of tea tree oil (TTO) commercial samples. Infrared measurements were made on untreated samples by transmission NIR and attenuated total reflectance (ATR) followed by partial least square discriminant analysis (PLS-DA). These methods offer a fast and low cost alternative to enantiomeric two-dimensional gas chromatography coupled to mass detection usually employed to discriminate between authentic and non-authentic samples. In these studies, a set of 267 samples, including authentic and non-authentic labelled tea tree oil samples, were used to build …

ChromatographyChemistryInfrared010401 analytical chemistryNear-infrared spectroscopyTea tree oilInfrared spectroscopy02 engineering and technology021001 nanoscience & nanotechnologyLinear discriminant analysis01 natural sciences0104 chemical sciencesAnalytical ChemistryAttenuated total reflectionmedicineGas chromatography0210 nano-technologySpectroscopymedicine.drugTalanta
researchProduct

Effectiveness of the Influence of Selected Essential Oils on the Growth of Parasitic Fusarium Isolated from Wheat Kernels from Central Europe

2021

The aim of the study was to determine the effectiveness of selected seven commercial essential oils (EsO) (grapefruit, lemongrass, tea tree (TTO), thyme, verbena, cajeput, and Litsea cubeba) on isolates of common Central European parasitic fungal species of Fusarium obtained from infected wheat kernels, and to evaluate the oils as potential natural fungicides. The study was conducted in 2 stages. At each stage, the fungicidal activity of EsO (with concentrations of 0.025

FusariumAntifungal AgentsPharmaceutical ScienceOrganic chemistryMicrobial Sensitivity TestsCitralArticle<i>Fusarium</i> isolates from the German and Polish populationAnalytical ChemistryFusarium isolates from the German and Polish populationchemistry.chemical_compoundQD241-441FusariumDrug DiscoveryOils VolatilePhysical and Theoretical Chemistryessential oilsMyceliumTriticumTea treeThyme oilbiologyPlant ExtractsLitsea cubebafood and beveragesbiology.organism_classificationFungicideEuropeHorticulturechemistryChemistry (miscellaneous)Verbenathe mycelial growth rate indexMolecular MedicineEdible GrainMolecules
researchProduct

Determination of tea tree oil terpenes by headspace gas chromatography mass spectrometry

2016

An alternative procedure was developed for determining quality control of terpenes in tea tree oil commercial samples. The method is based on static headspace gas chromatography mass spectrometry measurements. Absolute limits of detection ranged from 1 ng for p-cymene to 71 ng for terpinen-4-ol. The accuracy of the developed methodology was evaluated by comparing the obtained eucalyptol and terpinen-4-ol concentrations with those provided for a certified sample and by comparing the developed procedure with literature tea tree oil analysis methodology. In the same way, spiked commercial samples provided recovery values ranging between 94% and 100% for all the target analytes with relative st…

Detection limitAnalyteChromatography010405 organic chemistryChemistryGeneral Chemical Engineering010401 analytical chemistryRelative standard deviationGeneral EngineeringTea tree oilMass spectrometry01 natural sciences0104 chemical sciencesAnalytical ChemistryTerpenechemistry.chemical_compoundEucalyptolmedicineGas chromatographymedicine.drugAnalytical Methods
researchProduct