Journal of Essential Oil Research最新文献

{"title":"QSPR models for predicting the Kovats retention indices of synthetic ester derivatives based on pyrethrin essential oil","authors":"Mostafa Sadeghi, Esmat Mohammadinasab, Tahereh Momeni Isfahani","doi":"10.1080/10412905.2023.2265376","DOIUrl":"https://doi.org/10.1080/10412905.2023.2265376","url":null,"abstract":"ABSTRACTIn this study, the chromatographic characteristics of 100 different pyrethroids including ester derivatives of cyclopropanecarboxylic acids were analyzed by measuring their logarithmic kovats retention index (log KRI) using a quantitative structure-retention relationship (QSRR). The log KRI of the studied pyrethroids were modeled by genetic algorithm-structure retention relationships (GA-QSRR) based on linear and nonlinear regression models. The descriptors such as HNar, H0v, and H5p, which express the GETAWAY (geometry, topology, and atom-weights assembly) compound descriptors, have a reasonable correlation with the log KRI. We assessed the predictive strength of the BP-ANN model and demonstrated the potential of the model using various statistical parameters. The statistical parameters such as Q2F1, Q2F2, Q2F3, AAD, RMSE and CCC were used to evaluate the predictive ability of the BP-ANN model. In predicting the log KRI of pyrethroids, the results indicated that the BP-ANN model is more reliable and accurate than the BW-MLR model. KEYWORDS: BP-ANNBW-MLRQSPRKovats retention indexpyrethrin essential oil Disclosure statementNo potential conflict of interest was reported by the authors.","PeriodicalId":15782,"journal":{"name":"Journal of Essential Oil Research","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134991516","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Evaluation of thymol effect on antimicrobial susceptibility and biofilm production in clinical <i>Enterobacter spp</i> . producing <i>ESBLs</i> and <i>KPC</i> enzymes","authors":"Shabnam Khanialiakbari, Rasoul Yousefimashouf, Mohammad Taheri","doi":"10.1080/10412905.2023.2276102","DOIUrl":"https://doi.org/10.1080/10412905.2023.2276102","url":null,"abstract":"ABSTRACTBackground Multidrug-resistant Enterobacter strains that harbour Klebsiella pneumoniae carbapenemase and Extended Spectrum β-Lactamases genes are a therapeutic challenge in hospitals that have made infection control and antibiotic therapy difficult and use of natural compounds such as thymol is interesting in the treatment of infections.Methods Sixty-seven Enterobacter spp. isolates were obtained from patients admitted to hospitals in Hamadan and Tehran. Antimicrobial susceptibility, ESBLs and KPC genes detection and biofilm production of isolates were measured.Findings The results showed that the highest and lowest antibiotic resistance were related to ceftazidime (82.1%) and tigecycline (3%), respectively. Also, 79.1% of the isolates were MDR. The highest presence of genes was related to TEM (100%), SHV (82%), CTX-M (77%) and KPC (8.96%) genes. The MIC and MBIC of thymol were obtained 8-31 μg/ml and16-62 μg/ml, respectively.Conclusion Use of thymol, as an aid in antibiotic therapy is recommended.KEYWORDS: Thymolantimicrobial susceptibilitybiofilm productionenterobacterbeta lactamase AcknowledgmentsThe authors are thankful to the Research and Technology of Hamadan University of Medical Sciences, Hamadan, Iran for their financial support.Disclosure statementNo potential conflict of interest was reported by the author(s).Authors’ contributionsR. Y and M. T designed the study. Sh. Kh, and M. T contributed to the experimental studies and drafted the work. Sh. Kh, and M. T contributed to the sample collections. All authors read and approved the final manuscript.Ethical approvalThis study was approved by the Ethics Committee of Hamadan University of Medical Sciences, Hamadan, Iran (Ethical approval No. IR.UMSHA.REC.1399.283).Additional informationFundingThis study was funded by Hamadan University of Medical Sciences, Hamadan, Iran (Grant No. 9910307582).","PeriodicalId":15782,"journal":{"name":"Journal of Essential Oil Research","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135192066","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Evaluation of antimicrobial and antioxidant activity of <i>Carum copticum</i> L. essential oil encapsulated in electrospun cellulose acetate nanofibers","authors":"Parisa Ebadi, Maryam Azizkhani","doi":"10.1080/10412905.2023.2270547","DOIUrl":"https://doi.org/10.1080/10412905.2023.2270547","url":null,"abstract":"ABSTRACTThe objective of this research was to nanoencapsulate ajwain (Carum copticum L.) essential oil (EO) in cellulose acetate (CA) using the electrospinning technique and evaluate its antioxidant and antimicrobial activity. The main components of ajwain EO were thymol, p-cymene, and γ- terpinene. A zeta potential of −40.11, −37.85, −35.50, and −31.74 mV was found for nanofibers of pure CA, CA/EO 1%, 2.5%, and 5%, respectively. According to SEM images, CA electrospun nanofiber loaded with different concentrations of ajwain EO had nano-scale size and uniform morphology. The antibacterial activity enhanced with higher concentrations of EO, and it was higher for nanoencapsulated EO at the same concentration. The fibers loaded with EO were effective against the microbial strains according to the following decreasing order: E. coli > S. enteritidis > S. dysenteriae > L. monocytogenes > S. aureus. Results of the antioxidant assays showed that the ABTS and DPPH scavenging capacity and reduction potential of Fe3+ of free and nanoencapsulated EO were as follows: CA/EO 5% = CA/EO 2.5% > EO 5% > CA/EO 1% > EO 2.5% > EO 1%. Antioxidant and antibacterial activities of all EO-loaded CA nanofibers were higher than free EO.KEYWORDS: Ajwaincellulose acetateelectrospinningessential oilnanoencapsulation Disclosure statementThe authors declare that they do not have any conflict of interest.Additional informationFundingThis work was supported by a research grant from the Amol University of Special Modern Technologies, Amol, Iran.","PeriodicalId":15782,"journal":{"name":"Journal of Essential Oil Research","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136033355","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The essential oil from leaves of <i>Mauria heterophylla</i> Kunth (Anacardiaceae): chemical and enantioselective analyses","authors":"Katherine Vivanco, José Vinicio Montesinos, Nixon Cumbicus, Omar Malagón, Gianluca Gilardoni","doi":"10.1080/10412905.2023.2266430","DOIUrl":"https://doi.org/10.1080/10412905.2023.2266430","url":null,"abstract":"ABSTRACTThe first chemical and enantioselective analyses of the essential oil from the leaves of Mauria heterophylla Kunth were carried out. The dry plant materialproduced an essential oil with a 0.09 ± 0.05% yield by weight. The volatile fraction was submitted to GC-MS (qualitative) and GC-FID (quantitative) analyses, on two different stationary phases. A total of forty-four constituents were detected and quantified with at least one column, corresponding to about 85.5% of the whole oil mass. Limonene (15.2%), (E)-β-caryophyllene (11.1%), α-phellandrene (10.9%), germacrene D (6.6%), α-pinene (6.4%), myrcene (3.9%), β-phellandrene (2.8%), bicyclogermacrene (2.8%), (E)-β-farnesene (2.2%) and δ-cadinene (1.2%) were major components. Furthermore, the study was complemented with the enantioselective analysis of eleven common chiral terpenes, carried out on two β-cyclodextrin-based chiral selectors. Among the chiral metabolites, (1R,4S)-(+)-camphene, (1R,5R)-(+)-β-pinene, (S)-(+)-α-phellandrene and (S)-(+)-β-phellandrene were enantiomerically pure, whereas α-pinene, sabinene, limonene, linalool, terpinen-4-ol, α-terpineol and germacrene D were present as scalemic mixtures.KEYWORDS: Mauria heterophyllagas chromatographymass spectrometryenantiomersβ-cyclodextrinEcuador Disclosure statementNo potential conflict of interest was reported by the author(s).","PeriodicalId":15782,"journal":{"name":"Journal of Essential Oil Research","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135198801","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"In-vitro antimicrobial activity of essential oils of Tasmania","authors":"Strub Daniel Jan","doi":"10.1080/10412905.2023.2252416","DOIUrl":"https://doi.org/10.1080/10412905.2023.2252416","url":null,"abstract":"ABSTRACT Thirteen commercial Tasmanian essential oils were evaluated for their antimicrobial activity against 14 human pathogens and cosmetic contaminants including Enterococcus hirae, Kocuria rhizophila, Staphylococcus epidermidis, Propionibacterium acnes, Staphylococcus aureus, Escherichia coli, Klebsiella aerogenes, Klebsiella pneumoniae, Pluralibacter gergoviae, Pseudomonas fluorescens, Burkholderia cepacia, Pseudomonas putida, Aspergillus brasiliensis, and Aspergillus fumigatus. The antimicrobial activities of various essential oils were evaluated using the AlamarBlue Cell Viability Assay, covering a testing concentration range from 3.125 to 800 µg/mL. Essential oils were deemed active if their minimum inhibitory concentration (MIC) value was less than or equal to 800 µg/mL. The essential oils of Rosemary (Rosmarinus officinalis ct. α-pinene), Parsley Herb (Petroselinum crispum), and Bitter Fennels (Foeniculum vulgare) demonstrated significant growth inhibitory effects on one microorganism (P. fluorescens) within an MIC value of ≤ 800 µg/mL. Big Badja Gum (Eucalyptus badjensis), Blue Gum (Eucalyptus globulus), Peppermint (Mentha piperita), and Lavender (Lavandula angustifolia) essential oils inhibited the growth of two different microorganisms. Southern Rosalina (Melaleuca ericifolia), Parsley Seed (Petroselinum crispum), Smoky Tea Tree (Leptospermum glaucescens), and Kunzea (Kunzea ambigua) essential oils exhibited an MIC value of less than or equal to 800 µg/mL against 4, 5, 6, and 8 microorganisms respectively. Notably, Coastal Tea Tree (Leptospermum laevigatum) essential oil displayed the most profound antimicrobial activity, inhibiting 11 out of 15 microbial strains within an MIC range of 50–800 µg/mL. The results of the gas chromatography analysis showed that the coastal tea tree essential oil was composed primarily of monoterpenes, with smaller amounts of sesquiterpenes and their oxygenated derivatives. 35 Compounds were identified, representing 95.50% of the compounds in the coastal tea tree essential oil. The main constituents of this essential oil were α-pinene (34.83%), followed by α- and β-eudesmols (10.21% total), and limonene (9.56%).","PeriodicalId":15782,"journal":{"name":"Journal of Essential Oil Research","volume":null,"pages":null},"PeriodicalIF":3.0,"publicationDate":"2023-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76966831","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Anatomical investigation, essential oil composition and antimicrobial activity of Salvia aytachii species from Turkey","authors":"G. Yılmaz, Gözde Öztürk, B. Demirci","doi":"10.1080/10412905.2023.2247392","DOIUrl":"https://doi.org/10.1080/10412905.2023.2247392","url":null,"abstract":"ABSTRACT Salvia aytachii Vural & Adıgüzel species belong to the Lamiaceae family. It is an endemic plant and is locally known as ‘Ay Şalbası’. Salvia species are generally known as adaçayı in Anatolia. It has a wide variety of traditional uses concerning the digestive system. In this study, cross-sections were taken from the leaves and stem to determine the anatomical features of S. aytachii. The characteristic elements were determined with the help of a microscope. Chemical components of the essential oil were determined by Gas Chromatography–Flame Ionization Detector (GC-FID) and Gas Chromatography-Mass Spectrometry (GC-MS) systems. A total of 79 compounds corresponding to 91.1% of S. aytachii essential oil were determined. Major compounds were identified as camphor (20.3%), 1,8-cineole (20.0%), camphene (6.0%), myrcene (5.6%), valeranone (5.5%,) borneol (5.0%) and α-pinene (4.3%). To evaluate in vitro antimicrobial activity of the essential oil, broth microdilution method was used against Staphylococcus aureus ATCC 6538, Escherichia coli NRRL B-3008, Bacillus cereus NRRL B-3711, Bacillus subtilis NRRL B-4378 and Candida albicans ATCC 90,028. The results were found to be significant in terms of antimicrobial efficacy.","PeriodicalId":15782,"journal":{"name":"Journal of Essential Oil Research","volume":null,"pages":null},"PeriodicalIF":3.0,"publicationDate":"2023-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83595732","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Continual misidentification of 5-oxolinalool as 2-methylnon-2-en-4-one in essential oils","authors":"Vidak N. Raičević, N. Radulović","doi":"10.1080/10412905.2023.2247401","DOIUrl":"https://doi.org/10.1080/10412905.2023.2247401","url":null,"abstract":"ABSTRACT When employing GC and GC-MS, constituents of essential oils are most frequently identified by comparing retention indices and mass spectra with those reported in the literature or analytical libraries. While this allows for a rapid analysis, incorrect data can lead to a constituent being repeatedly misidentified. This was demonstrated in this work for 5-oxolinalool (6-hydroxy-2,6-dimethylocta-2,7-dien-4-one), an oxygenated monoterpene that was often erroneously identified as 2-methylnon-2-en-4-one. After encountering an unknown constituent of the essential oil of Sambucus nigra L. (Viburnaceae) flowers, we sought to acquire relevant analytical data on both compounds. Even though their mass spectra were rather similar (with 2-methylnon-2-en-4-one missing the peak at m/z 71), their retention indices were found to be significantly different. It follows that a revision of all prior identifications of 2-methylnon-2-en-4-one as an essential-oil constituent is needed.","PeriodicalId":15782,"journal":{"name":"Journal of Essential Oil Research","volume":null,"pages":null},"PeriodicalIF":3.0,"publicationDate":"2023-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82910763","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Chemical constituents, antioxidant and antibacterial activities of essential oils of Ochna afzelii (R. Br. ex Oliv.)","authors":"Edith N. Ibeh, M. Adeyemi, O. Olaoluwa, O. M. Taiwo, G. Flamini","doi":"10.1080/10412905.2023.2243952","DOIUrl":"https://doi.org/10.1080/10412905.2023.2243952","url":null,"abstract":"ABSTRACT      Essential oils (EOs) from Ochna afzelii leaves, stems and roots were extracted and characterised by hydrodistillation and Gas Chromatogragphy-Mass Spectrometry (GC/MS) techniques, respectively. Antioxidant activity was evaluated by 2,2-diphenyl-1-picrylhydrazyl (DPPH*) method while antibacterial activity was determined using agar well diffusion and broth microdilution methods. Leaf, stem, and root oils afforded thirteen, ten and seven compounds, respectively, which were characterized by a high percentage of oxygenated sesquiterpenes and sesquiterpene hydrocarbons. The major compound in O. afzelii leaf and root EOs was β-Atlantol, while the O. afzelii stem EO had (E)-β-ionone as its major compound. The leaf oil displayed highest antioxidant activity (IC50 = 238.14 µL/mL). All the EOs showed antibacterial activities against Escherichia coli, Pseudomonas aeruginosa, Salmonella typhi, and Streptococcus pneumoniae, with the zones of inhibition and MIC values ranging from 12.0–18.0 mm and 2.5–10 µL/mL, respectively. O. afzelii has a mild antioxidant effect, but can be a potential source of natural antibacterial agents.","PeriodicalId":15782,"journal":{"name":"Journal of Essential Oil Research","volume":null,"pages":null},"PeriodicalIF":3.0,"publicationDate":"2023-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77597818","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The effect of exposure to Mentha suaveolens Ehrh. essential oil on the electroencephalographic activity according to gender difference","authors":"E. Napoli, Minju Kim, K. Sowndhararajan, G. Ruberto, Songmun Kim","doi":"10.1080/10412905.2023.2240798","DOIUrl":"https://doi.org/10.1080/10412905.2023.2240798","url":null,"abstract":"ABSTRACT Mentha suaveolens Ehrh. is an aromatic herb, traditionally used in the Mediterranean areas. Our objective was to evaluate the effect of inhalation of a commercial essential oil of M. suaveolens on human electroencephalographic (EEG) activity according to gender differences by measuring EEG power spectrum changes in healthy participants. Piperitenone oxide (55.60%) was the most abundant component in the essential oil. Our findings indicated that the inhalation of M. suaveolens essential oil produced different EEG power spectrum changes as well as affected different brain regions between genders.    It could be concluded that the inhalation of M. suaveolens essential oil significantly changed the EEG wave activity according to gender and these changes may cause some alterations in the psychophysiological functions of humans. Hence, M. suaveolens essential oil may be utilized in aromatherapy for improving the psychophysiological functions of humans.","PeriodicalId":15782,"journal":{"name":"Journal of Essential Oil Research","volume":null,"pages":null},"PeriodicalIF":3.0,"publicationDate":"2023-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80577453","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Some quality and essential oil classifications of Turkish aniseed (Pimpinella anisum L.)","authors":"Ayşe Betül Avcı, M. Göre, B. Öztürk","doi":"10.1080/10412905.2023.2240802","DOIUrl":"https://doi.org/10.1080/10412905.2023.2240802","url":null,"abstract":"ABSTRACT For industries that use aniseed as a raw material, essential oil content and aroma composition are critical factors. Anise fruits were collected from 15 locations to determine these criteria. The essential oil procured by hydrodistillation was analysed by gas chromatography (GC) and gas chromatography–mass spectrometry (GC – MS). The locations were divided into five classes according to the cluster analysis of essential oil components. The most important components that made up the classes were estragole (2.33%), trans–anethole (93.90%), cis-anethole (0.21%), carvone (0.097%), p-anisaldehyde (0.651%), longifolene (1.35%), carvacrol (0.06%) and α-himachalane (0.12%). The rate of essential oil varied between 0.33-3.01% in the locations. Trans–anethole is the main component of the essential oil, while their rates changed according to the populations (90.8–96.6%). Location has a significant (p ≤ 0.05) effect on the essential oil, fruit width, fruit length and a thousand fruit weight; furthermore, it is positively related.","PeriodicalId":15782,"journal":{"name":"Journal of Essential Oil Research","volume":null,"pages":null},"PeriodicalIF":3.0,"publicationDate":"2023-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83802257","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}