Headspace solid-phase microextraction gas chromatography–mass spectrometry analysis of Eupatorium odoratum extract as an oviposition repellent

Cui, Shufen; Tan, Cherie S.; Ouyang, Gangfeng; Jiang, Shihong; Pawliszyn, Janusz

doi:10.1016/j.jchromb.2009.05.022

Cited by 32 publications

(19 citation statements)

References 25 publications

(30 reference statements)

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“…This fiber was also chosen as the best for the collection of volatile mixtures of a similar type as those expected for G. lineatum [7][8][9][10], such as e.g. some plant volatiles [30,31], coleopteran insect secretions [32], and honey [16]. An extraction temperature of 25 • C was used, because this temperature is close to insect defense natural conditions.…”

Section: Sample Preparationmentioning

confidence: 99%

Profiling and characterization of volatile secretions from the European stink bug Graphosoma lineatum (Heteroptera: Pentatomidae) by two-dimensional gas chromatography/time-of-flight mass spectrometry

Šanda

Žáček

Streinz

et al. 2012

Journal of Chromatography B

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Section: Sample Preparationmentioning

confidence: 99%

Profiling and characterization of volatile secretions from the European stink bug Graphosoma lineatum (Heteroptera: Pentatomidae) by two-dimensional gas chromatography/time-of-flight mass spectrometry

Šanda

Žáček

Streinz

et al. 2012

Journal of Chromatography B

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“…Recently, solidphase microextraction (SPME) and purge-and-trap methods using various adsorbents have been widely used for the rapid extraction of volatile compounds from aromatic and medicinal plants. [16][17][18] SPME has been proven as a useful extraction method, with the advantages of rapidity and simplicity as well as no use of organic solvents. However, several parameters in SPME, such as the times and temperatures of adsorption and desorption process, kind of fibers, and sample amounts, should be optimized prior to sample analysis.…”

mentioning

confidence: 99%

Development of Fingerprints for Quality Control of Acorus species by Gas Chromatography/Mass Spectrometry

Yu¹,

Kim²,

Lee³

et al. 2011

Bulletin of the Korean Chemical Society

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An effective analytical method of gas chromatography/mass spectrometry (GC/MS) was developed for the rapid determination of essential oils in the crude extract of Acorus species (Acorus gramineus, Acorus tatarinowii, and Acorus calamus). Major phenypropanoids (β,α-asarone isomers, euasarone, and methyleugenol) and β-caryophyllene in Acorus species were used as marker compounds and determined for the quality control of herbal medicines. To extract marker compounds, various extraction techniques such as solvent immersion, mechanical shaking, and sonication were compared, and the greatest efficiency was observed with sonication extraction using petroleum ether. The dynamic range of the GC/MS method depended on the specific analyte; acceptable quantification was obtained between 10 and 2000 μg/mL for β-asarone, 10 and 500 μg/mL for α-asarone, 10 and 200 μg/mL for methyleugenol, and between 5 and 100 μg/mL for β-caryophyllene. The method was deemed satisfactory by inter-and intra-day validation and exhibited both high accuracy and precision, with a relative standard deviation < 10%. Overall limits of detection were approximately 0.34-0.83 μg/mL, with a standard deviation (σ)-to-calibration slope (s) ratio (σ/s) of 3. The limit of quantitation in our experiments was approximately 1.13-3.20 μg/mL at a σ/s of 10. On the basement of method validation, 20 samples of Acorus species collected from markets in Korea were monitored for the quality control. In addition, principal component analysis (PCA) and hierarchical cluster analysis (HCA) were performed on the analytical data of 20 different Acorus species samples in order to classify samples that were collected from different regions.

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“…In principle, the designation "volatile organic compounds" does not differentiate between highly or poorly volatile compounds. However, the majority of previous chemical analyses of human scent samples (Cui et al 2009;Curran et al 2010;Curran et al 2005;Kusano et al 2011;Pandey and Kim 2011) implicitly presumed that the highly (and perhaps also moderately) volatile compounds are the most important for human scent signatures. This assumption follows from the analytical chemistry methods that are typically used in these chemical scent analyses.…”

Section: Introductionmentioning

confidence: 99%

Multiplicity of human scent signature

Doležal

Furton

Lněničková

et al. 2019

Egypt J Forensic Sci

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Background: In this paper, the term "human scent signature" refers to a group of chemical compounds in a human scent trace that are in certain relative concentrations that make an unambiguous identification of persons possible. At the present time, the scent identification of persons is performed using specially trained canines. However, the scent identification mechanism as well as the molecular composition of the human scent signature is entirely unrecognized. Delimitations of the group of chemical compounds according to their volatilities that specially trained canines use for the scent identification of persons were initially the main aim of this study. Methods: Eleven volunteer scent samples were split into three groups of chemical compounds, i.e., into three disjointed scent fractions with different volatilities of the compounds via preparative gas chromatography. The human scent signatures were searched in these separated scent fractions using six specially trained canines (female German Shepherds). Results: The canines were able to identify individual persons successfully using different scent fractions. From this fact, it follows that one scent trace can contain more than only one group of scent compounds that can be used for scent identification by the trained canines. This observed phenomenon was named as "the multiplicity of the human scent signature" in this study. The scent identification line-up procedure provided the following results: The poorly volatile fraction resulted in an 85% success rate in the scent identification procedure. The middle fraction resulted in a 58% success rate, and the highly volatile fraction resulted in a 30% success rate. Conclusions: In this study, it was found that the human scent sample contains more than one group of scent compounds; according to which the trained canines are able to identify human individuals. It means that the human scent sample contains more than only one scent signature. The authors of this research believe that results of this study will open a broad discussion about the multiplicity of the human scent signature, primary scent molecules, optimal canine training, and in general, the scent identification method in many countries.

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Headspace solid-phase microextraction gas chromatography–mass spectrometry analysis of Eupatorium odoratum extract as an oviposition repellent

Cited by 32 publications

References 25 publications

Profiling and characterization of volatile secretions from the European stink bug Graphosoma lineatum (Heteroptera: Pentatomidae) by two-dimensional gas chromatography/time-of-flight mass spectrometry

Profiling and characterization of volatile secretions from the European stink bug Graphosoma lineatum (Heteroptera: Pentatomidae) by two-dimensional gas chromatography/time-of-flight mass spectrometry

Development of Fingerprints for Quality Control of Acorus species by Gas Chromatography/Mass Spectrometry

Multiplicity of human scent signature

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