Comprehensive Two‐Dimensional Gas Chromatography Combined with Mass Spectrometry

Tranchida, Peter Q.; Mondello, Luigi; Poynter, Samuel; Shellie, Robert A.

doi:10.1002/9781118003466.ch6

Cited by 4 publications

(1 citation statement)

References 254 publications

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“…Hyphenated techniques are used to combine the separation ability of GC with the identification ability of other techniques, most importantly mass spectrometry (MS). The specific coupling of GC×GC with MS methods has been reviewed recently 11…”

Section: Introductionmentioning

confidence: 99%

Essential‐Oil Analysis of Irradiated Spices by Using Comprehensive Two‐Dimensional Gas Chromatography

et al. 2014

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Four different spices were packaged either under 100 % nitrogen or using ambient air, and then gamma‐irradiated at different doses. The essential oils of the original spices and of those irradiated were obtained by hydrodistillation. Changes to the essential‐oil compositions due to irradiation and effects of packaging were detected and compared by using comprehensive two‐dimensional gas chromatography (GC×GC). The use of GC×GC provided better separation and more reliable results. It enabled ready detection of some peaks that coeluted with other peaks in the first‐dimension column (1D). Differences in detected peaks were observed after irradiation of samples packaged under ambient air, with additional peak(s) noted. Two peaks appeared after irradiation of aerobically packaged rosemary, black pepper and thyme, and one peak increased in relative abundance in the samples. No changes in these three peaks were noted after irradiation of samples packaged under 100 % N2. These three essential‐oil components were identified by using GC×GC quadrupole time‐of‐flight mass spectrometry (Q‐TOFMS). The changes after irradiation were mainly due to packaging type, and no effect of the irradiation dose was observed in the study.

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Section: Introductionmentioning

confidence: 99%

Essential‐Oil Analysis of Irradiated Spices by Using Comprehensive Two‐Dimensional Gas Chromatography

et al. 2014

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Analytical Strategies for Multipurpose Studies of a Plant Volatile Fraction

Cagliero¹,

Sgorbini²,

Cordero³

et al. 2014

Encyclopedia of Analytical Chemistry

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This chapter is a critical overview on the recent strategy to study the composition of the plant volatile fraction. With the introduction of metabolomics, this fraction has strongly regained interest, being an important biosensor diagnostic of plant metabolism and changes. In the first part of this chapter, the concepts and the practical aspects of profiling and fingerprinting are discussed when applied to study the plant volatile fraction. In particular, methods and technologies to obtain a representative volatile profiling are discussed in detail with the aim to define an effective combination of the three main steps of an analytical procedure (i.e., sample preparation, analysis, and data elaboration) to obtain reliable and high throughput results. In particular, essential oils and headspace sampling, GC techniques (conventional GC , fast GC , enantioselective GC , heart‐cut 2DGC , and GCxGC ) and MS detection with different analyzers, and supervised and unsupervised statistical methods are discussed in this respect. The same approach is used to discuss fingerprinting, that is mainly focused on nonseparative methods and in particular on headspace‐mass spectrometry ( HS‐MS ). The second part deals with the evolution of screening and exhaustive study of the plant volatile fraction in view of the recent scientific and technological achievements: these two approaches and their meaning in the present context are discussed and a general and indicative procedure to apply is given.

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Advances in the Analysis of Volatile Isoprenoid Metabolites

Wüst

2014

Biotechnology of Isoprenoids

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The advances in the analysis of volatile isoprenoid metabolites from sample preparation to separation and detection over the past 3 years are discussed in this overview. Novel headspace sampling techniques like the so-called high concentration capacity techniques are compared with the classical liquid extraction and distillation methods. The advantages of multidimensional separation techniques in the analysis of complex samples are outlined and commercially available dedicated heart-cutting and comprehensive GC systems are described.

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Comprehensive Two‐Dimensional Gas Chromatography Combined with Mass Spectrometry

Cited by 4 publications

References 254 publications

Essential‐Oil Analysis of Irradiated Spices by Using Comprehensive Two‐Dimensional Gas Chromatography

Essential‐Oil Analysis of Irradiated Spices by Using Comprehensive Two‐Dimensional Gas Chromatography

Analytical Strategies for Multipurpose Studies of a Plant Volatile Fraction

Advances in the Analysis of Volatile Isoprenoid Metabolites

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