Characterization of essential oils from Myrtaceae species using ATR-IR vibrational spectroscopy coupled to chemometrics

Farag, N.; El-Ahmady, Sherweit H.; Abdelrahman, Enas H.; Naumann, Annette; Schulz, Hartwig; Azzam, Shadia M; El-Kashoury, El-Sayeda A.

doi:10.1016/j.indcrop.2018.07.066

Cited by 39 publications

(27 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…On the other hand, a broadband centered on 3,437 cm -1 is observed in the ECEO spectrum, referring to the O-H stretching modes of its alcoholic components, such as citronellol, isopulegol and neo-isopulegol [5] . These components are the main constituints of ECEO, as reported in the literature [42,43] . The strong-intensity narrow band observed in 1727 cm -1 and the medium-intensity band observed in 1454 cm -1 for ECEO can be attributed, respectively, to the stretching of C=O and bending of C-H citronellal stretching mode [42] .…”

Section: Antimicrobial Activity Of Ne Formulationsmentioning

confidence: 76%

Polymeric nanoemulsions enriched with Eucalyptus citriodora essential oil

et al. 2020

View full text Add to dashboard Cite

Eucalyptus citriodora oil has a well-known antimicrobial activity, however, its volatility limits its therapeutic applicability. Oil-in-water chitosan-based nanoemulsions have been prepared using a high-energy method in variable conditions in order to produce a stable formulation with an effective antimicrobial action. Physical-chemical characterizations and antimicrobial activity were performed. Results showed that the nanoemulsions with stability over 60 days and encapsulation efficiency higher than 90% were the ones with higher surfactant content. An optimal formulation was produced with the longer chain surfactant, which impacted in a particle size of 489.2±0.25nm and encapsulation efficiency of 92.5±0.17%. This formulation showed sustained release over 72h according to zero order kinetics, where the drug diffusion is lower than the respective dissolution release rate. The bactericidal action of the tested formulations showed an expressive inhibition rate against S. typhimurium (73%), with potential for an effective release system for antimicrobial control.

show abstract

Section: Antimicrobial Activity Of Ne Formulationsmentioning

confidence: 76%

Polymeric nanoemulsions enriched with Eucalyptus citriodora essential oil

et al. 2020

View full text Add to dashboard Cite

show abstract

“…Spectroscopy techniques as fast and easy handling technologies are nowadays widely applied directly on plant material for qualitative and semi-quantitative characterization. Different studies describe the application of NIRS, IRS, and Raman for differentiation of chemotypes and prediction of EO composition in various medicinal and aromatic plants ( Seidler-Lozykowska et al., 2010 ; Gudi et al., 2014 ; Farag et al., 2018 ). For Z. multiflora the presented quantification models are not accurate for exact determination at current state, since, e.g., for linalool, samples are very inhomogeneous distributed over the investigated range of concentration.…”

Section: Discussionmentioning

confidence: 99%

Variation of Secondary Metabolite Profile of Zataria multiflora Boiss. Populations Linked to Geographic, Climatic, and Edaphic Factors

et al. 2020

Self Cite

View full text Add to dashboard Cite

Geographic location and connected environmental and edaphic factors like temperature, rainfall, soil type, and composition influence the presence and the total content of specific plant compounds as well as the presence of a certain chemotype. This study evaluated whether geographic, edaphic, and climatic information can be utilized to predict the presence of specific compounds from medicinal or aromatic plants. Furthermore, we tested rapid analytical methods based on near infrared spectroscopy (NIR) coupled with gas chromatography/flame ionization (GC/FID) and gas chromatography/mass spectrometry (GC/MS) analytical methods for characterization and classification metabolite profiling of Zataria multiflora Boiss. populations. Z. multiflora is an aromatic, perennial plant with interesting pharmacological and biological properties. It is widely dispersed in Iran as well as in Pakistan and Afghanistan. Here, we studied the effect of environmental factors on essential oil (EO) content and the composition and distribution of chemotypes. Our results indicate that this species grows predominantly in areas rich in calcium, iron, potassium, and aluminum, with mean rainfall of 40.46 to 302.72 mm•year −1 and mean annual temperature of 14.90°C to 28.80°C. EO content ranged from 2.75% to 5.89%. Carvacrol (10.56-73.31%), thymol (3.51-48.12%), linalool (0.90-55.38%), and pcymene (1.66-13.96%) were the major constituents, which classified 14 populations into three chemotypes. Corresponding to the phytochemical cluster analysis, the hierarchical cluster analysis (HCA) based on NIR data also recognized the carvacrol, thymol, and linalool chemotypes. Hence, NIR has the potential to be applied as a useful tool to determine rapidly the chemotypes of Z. multiflora and similar herbs. EO and EO constituent content correlated with different geographic location, climate, and edaphic factors. The structural equation models (SEMs) approach revealed direct effects of soil factors (texture, phosphor, pH) and mostly indirect effects of latitude and altitude directly

show abstract

“…Conventionally, high (ultra) performance liquid chromatography coupled with diode array detector or mass spectrometry is the common tool for analyzing of chemical composition and for determination of EUL's relative content (Niu et al, 2016;Li et al, 2017;Yan et al, 2018). Essential oil and their chemical constituent can be examined through gas chromatography linked with flame ionization or mass spectrometry (Farag et al, 2018;Kfoury et al, 2018). However, these methods normally require deleterious and dangerous reagents, such as methanol and acetonitrile.…”

Section: Introductionmentioning

confidence: 99%

Geographic Authentication of Eucommia ulmoides Leaves Using Multivariate Analysis and Preliminary Study on the Compositional Response to Environment

Wang

Tang

et al. 2020

Front. Plant Sci.

View full text Add to dashboard Cite

To explore the influences of different cultivated areas on the chemical profiles of Eucommia ulmoides leaves (EUL) and rapidly authenticate its geographical origins, 187 samples from 13 provinces in China were systematically investigated using three data fusion strategies (low, mid, and high level) combined with two discrimination model algorithms (partial least squares discrimination analysis; random forest, RF). RF models constructed by high-level data fusion with different modes of different spectral data (Fourier transform near-infrared spectrum and attenuated total reflection Fourier transform mid-infrared spectrum) were most suitable for identifying EULs from different geographical origins. The accuracy rates of calibration and validation set were 92.86% and 93.44%, respectively. In addition, climate parameters were systematically investigated the cluster difference in our study. Some interesting and novel information could be found from the clustering tree diagram of hierarchical cluster analysis. The Xinjiang Autonomous Region (Region 5) located in the high latitude area was the only region in the middle temperate zone of all sample collection areas in which the samples belonged to an individual class no matter their distance in the tree diagram. The samples were from a relatively high elevation in the Shennongjia Forest District in Hubei Province (>1200 m), which is the main difference from the samples from Xiangyang City (78 m). Thus, the sample clusters from region 9 are different from the sample clusters from other regions. The results would provide a reference for further research to those samples from the special cluster.

show abstract

Characterization of essential oils from Myrtaceae species using ATR-IR vibrational spectroscopy coupled to chemometrics

Cited by 39 publications

References 29 publications

Polymeric nanoemulsions enriched with Eucalyptus citriodora essential oil

Polymeric nanoemulsions enriched with Eucalyptus citriodora essential oil

Variation of Secondary Metabolite Profile of Zataria multiflora Boiss. Populations Linked to Geographic, Climatic, and Edaphic Factors

Geographic Authentication of Eucommia ulmoides Leaves Using Multivariate Analysis and Preliminary Study on the Compositional Response to Environment

Contact Info

Product

Resources

About