Volatile organic compounds in truffle (Tuber magnatum Pico): comparison of samples from different regions of Italy and from different seasons

Vita, Federico; Taiti, Cosimo; Pompeiano, Antonio; Bazihizina, Nadia; Lucarotti, Valentina; Mancuso, Stefano; Alpi, Amedeo

doi:10.1038/srep12629

Cited by 65 publications

(68 citation statements)

References 67 publications

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“…Other studies investigated the cow genetic parameters in relation with cheese flavour and the influence of dairy system and individual cow characteristics on the volatile fingerprint of cheeses . Other selected recent examples concern the distinction of species of chili peppers, the geographical origin of truffle and the impact of seasonal variations, the distinction between Mediterranean landraces and modern varieties of durum wheat or the ripening of mangoes . Whatever the MS‐based e‐nose (direct injection MS) technique is used, even with PTR‐ToF‐MS, complementary HS‐GC‐MS is often necessary to confirm identities of ions that built the classification, except when significant available literature on the composition of the products in VOCs can be used for this purpose.…”

Section: Introductionmentioning

confidence: 99%

Volatile compounds profiling by using proton transfer reaction‐time of flight‐mass spectrometry (PTR‐ToF‐MS). The case study of dark chocolates organoleptic differences

et al. 2019

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Direct‐injection mass spectrometry (DIMS) techniques have evolved into powerful methods to analyse volatile organic compounds (VOCs) without the need of chromatographic separation. Combined to chemometrics, they have been used in many domains to solve sample categorization issues based on volatilome determination. In this paper, different DIMS methods that have largely outperformed conventional electronic noses (e‐noses) in classification tasks are briefly reviewed, with an emphasis on food‐related applications. A particular attention is paid to proton transfer reaction mass spectrometry (PTR‐MS), and many results obtained using the powerful PTR‐time of flight‐MS (PTR‐ToF‐MS) instrument are reviewed. Data analysis and feature selection issues are also summarized and discussed. As a case study, a challenging problem of classification of dark chocolates that has been previously assessed by sensory evaluation in four distinct categories is presented. The VOC profiles of a set of 206 chocolate samples classified in the four sensory categories were analysed by PTR‐ToF‐MS. A supervised multivariate data analysis based on partial least squares regression‐discriminant analysis allowed the construction of a classification model that showed excellent prediction capability: 97% of a test set of 62 samples were correctly predicted in the sensory categories. Tentative identification of ions aided characterisation of chocolate classes. Variable selection using dedicated methods pinpointed some volatile compounds important for the discrimination of the chocolates. Among them, the CovSel method was used for the first time on PTR‐MS data resulting in a selection of 10 features that allowed a good prediction to be achieved. Finally, challenges and future needs in the field are discussed.

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Section: Introductionmentioning

confidence: 99%

Volatile compounds profiling by using proton transfer reaction‐time of flight‐mass spectrometry (PTR‐ToF‐MS). The case study of dark chocolates organoleptic differences

et al. 2019

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“…PTR-TOF-MS, used to characterize these emissions, is a useful analytical technique largely applied in order to provide an overview of the mass spectra of volatile compounds emitted by different materials (Vita et al 2015, Soukoulis et al 2013, Han et al 2010. A detailed description of the PTR-TOF-MS tool is discussed by Blake et al (2009).…”

Section: Introductionmentioning

confidence: 99%

Characterization of VOC emission profile of different wood species during moisture cycles

Sassoli¹,

Taiti²,

Nissim³

et al. 2017

iForest

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This study addresses the characterization of volatile organic compounds (VOCs) emitted by samples of 13 different wood species, belonging to both softwoods and hardwoods groups, regularly measured at different intervals of time, after the first measurement on green wood. The same wood specimens were subjected to several cycles of water desorption and adsorption, assuming that moisture variation might play a role in both the formation and emission of VOCs. Proton Transfer Reaction-Time of Flight-Mass Spectrometry (PTR-TOF-MS) was used as a tool to characterize the emission of VOCs. Coupled with a multivariate class-modelling approach, this tool was able to discriminate between groups (softwood and hardwood) and in some cases between different species. However, results showed that the discriminant capacity of VOCs emission to separate species and families rapidly decreases after the first cycles of moisture variation in wood. The green wood was characterized by a richness of volatile compounds, whereas, after only the first dry cycle, wood emitted a more restricted group of compounds. We hypothesized that most of these VOCs might have originated from structural changes and degradation processes that involve the main polymers (particularly hemicellulose) constituting the cell wall of wooden cells. The results obtained are in agreement with the physical and chemical modification processes that characterize wood ageing.

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“…In this study, extraction was performed using the hydrodistillation method with water as the solvent. A commercial PTR‐MS 8000 (Ionicon Analytik, Innsbruck, Austria) instrument, which is useful for achieving the whole mass spectra from several matrices, was used to assess the volatile profile for the collection of different essential oil samples. The advantages and disadvantages of this tool, as well as the details of its operation are reported in Blake et al and Taiti et al The analysis was carried out following a similar methodology previously reported by Taiti et al Briefly, a glass vial (15 ml) containing 2 µl of oil sample was placed in a glass jar (3/4 L) and covered with glass lid fitted with two holes.…”

Section: Methodsmentioning

confidence: 99%

Correlation between VOC fingerprinting and antimicrobial activity of several essential oils extracted by plant resins against A. tumefaciens and P. savastanoi

Caparrotta

Comparini

Marone

et al. 2019

Flavour & Fragrance J

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The present work aimed to assess the antimicrobial activity of twelve essential oils extracted from plant resins of trees that grow in several tropical and subtropical regions of the world. Eleven essential oils were extracted from resins of plant belonging to the Burseraceae family (the genera Boswellia, Commiphora, Canarium and Bursera); the remaining oil was extracted from a resinous plant belonging to the Fabaceae family (genus Hymenea). The extraction was carried out using a conventional distillation method. The volatile organic compounds (VOCs) of each essential oil were analyzed with PTR‐ToF‐MS (proton transfer reaction time‐of‐flight mass spectrometry) and the antimicrobial activity was evaluated against the phytopathogens Agrobacterium tumefaciens and Pseudomonas savastanoi pv. savastanoi. The essential oils obtained from Boswellia papyrifera, B. dalzielii, B. frereana and B. rivae were the most abundant in terms of signal intensity and VOC number in comparison with the other analyzed essential oils. Furthermore, B. neglecta shared a common volatile profile with the Canarium species, as was demonstrated previously in the literature. Greater bacterial growth inhibition of A. tumefaciens was detected with the essential oils extracted from plants belonging to Boswellia species while less action was observed against P. savastanoi. Finally, a positive correlation was found between terpenes and terpenoid compounds and bacterial growth inhibition, suggesting these essential oils as a new source of bioactive compounds for the prevention, protection and treatment of plant diseases.

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Volatile organic compounds in truffle (Tuber magnatum Pico): comparison of samples from different regions of Italy and from different seasons

Cited by 65 publications

References 67 publications

Volatile compounds profiling by using proton transfer reaction‐time of flight‐mass spectrometry (PTR‐ToF‐MS). The case study of dark chocolates organoleptic differences

Volatile compounds profiling by using proton transfer reaction‐time of flight‐mass spectrometry (PTR‐ToF‐MS). The case study of dark chocolates organoleptic differences

Characterization of VOC emission profile of different wood species during moisture cycles

Correlation between VOC fingerprinting and antimicrobial activity of several essential oils extracted by plant resins against A. tumefaciens and P. savastanoi

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