Direct olive oil analysis by mass spectrometry: A comparison of different ambient ionization methods

Lara-Ortega, Felipe J.; Beneito‐Cambra, Miriam; Robles-Molina, José; García-Reyes, Juan F.; Gilbert-López, Bienvenida; Molina‐Díaz, Antonio

doi:10.1016/j.talanta.2017.12.027

Cited by 40 publications

(23 citation statements)

References 52 publications

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“…In contrast to Crete, less complex secoiridoids, missing the phenylethanoid group, were identified with the exception of aldehydic form of ligstroside aglycon (42). Interestingly, high abundance of oleocanthal (32) was found in some specific samples (Lakonia subarea) even if it is not a statistically significant marker of Peloponnese EVOOs. In these cases, maybe other parameters, such as altitude, are responsible for these high levels.…”

Section: Geographical Originmentioning

confidence: 88%

“…Specifically, aldehydic form of oleuropein aglycon (44) is present in almost all samples from Crete, revealing the highest relative levels among all groups (VIP = 14.02). Also its derivatives, i.e., hydroxylated aldehydic form of oleuropein aglycon (47), hydroxylated decarboxymethyl oleuropein aglycon (39), oleacein (38), and oleocanthal (32), are characteristic secoiridoid markers of Crete (Figure 3). Other compounds strongly correlated are triterpenic acids [maslinic acid (57), oleanolic acid (56)] and long chain fatty acids [lignoceric acid (43), montanic acid (55), gondoic acid (34), arachidic acid (35)].…”

Section: Geographical Originmentioning

confidence: 99%

“…On the other hand, in organic practices we did not identify many biophenols as marker compounds. However, in a considerable number of samples characteristic secoiridoids and more specifically the relatively more polar were identified in higher levels in comparison to conventional practice, i.e., oleacein (38), oleocanthal (32), aldehydic form of ligstroside aglycon (42), and its derivatives as well as some aldehydic form of oleuropein aglycon derivatives (Figure 7). This observation initially seems in contrast with most of available studies reporting that organic practice produces higher biophenols levels, however measured as TPC values (47,50,71,72).…”

Section: Cultivation Practicementioning

confidence: 99%

“…For biophenols ( Figure 8B) the observed pattern is different, and the discrimination between the two groups was much better as well as the validation scores. In specific, hydroxytyrosol (6), tyrosol (3), hydroxytyrosol acetate (9), tyrosol acetate (7), and the secoiridoids oleacein (38), oleocanthal (32), and FIGURE 9 | Box-plots representing intensities of statistical significant compounds grouped according to their chemical class: triterpenic acids, flavonoids, lignans, elenolic derivatives phenyl alcohols, and oleocanthal (32) from secoiridoids class. Box-plots are presented according to production procedure system: two phase (blue) and three phase (green).…”

Section: Production Proceduresmentioning

confidence: 99%

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Olive Oil Quality and Authenticity Assessment Aspects Employing FIA-MRMS and LC-Orbitrap MS Metabolomic Approaches

Νίκου

Witt

Stathopoulos

et al. 2020

Front. Public Health

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Edible vegetable oils comprise integral components of humans' daily diet during the lifetime. Therefore, they constitute a central part of dietary-exposome, which among other factors regulates human health. In particular, the regular consumption of olive oil (OO) has been largely accepted as a healthy dietary pattern. Responsible for its recognition as a superior edible oil is its exceptional aroma and flavor. Its unique composition is characterized by high levels of monounsaturated fatty acids and the presence of minor constituents with important biological properties, such as the so-called OO polyphenols. Being a high added value product, OO suffers from extensive fraud and adulteration phenomena. However, its great chemical complexity, variability, and the plethora of parameters affecting OO composition hamper significantly the selection of the absolute criteria defining quality and authenticity, and a reliable and robust methodology is still unavailable. In the current study, Flow Injection Analysis-Magnetic Resonance Mass Spectrometry (FIA-MRMS) was investigated under a metabolic profiling concept for the analysis of Greek Extra Virgin Olive Oils (EVOO). More than 200 monovarietal (Koroneiki) EVOO samples were collected from the main Greek OO producing regions and investigated. Both intact oil and the corresponding polyphenols were analyzed in fast analysis time of 2 and 8 min, respectively. In parallel, an LC-Orbitrap MS platform was used to verify the efficiency of the method as well as a tool to increase the identification confidence of the proposed markers. Based on the results, with FIA-MRMS, comparable and improved projection and prediction models were generated in comparison to those of the more established LC-MS methodology. With FIA-MRMS more statistically significant compounds and chemical classes were identified as quality and authenticity markers, associated with specific parameters, i.e. geographical region, cultivation practice, and production procedure. Furthermore, it was possible to monitor both lipophilic and hydrophilic compounds with a single analysis. To our knowledge, this approach is among the few studies in which two FT-MS platforms combining LC and FIA methods were integrated to provide solutions to quality control aspects of OO. Moreover, both lipophilic and hydrophilic components are analyzed together, providing a holistic quality control workflow for OO.

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Section: Geographical Originmentioning

confidence: 88%

Section: Geographical Originmentioning

confidence: 99%

Section: Cultivation Practicementioning

confidence: 99%

Section: Production Proceduresmentioning

confidence: 99%

See 2 more Smart Citations

Olive Oil Quality and Authenticity Assessment Aspects Employing FIA-MRMS and LC-Orbitrap MS Metabolomic Approaches

Νίκου

Witt

Stathopoulos

et al. 2020

Front. Public Health

View full text Add to dashboard Cite

show abstract

“…Perfumes have been analyzed in a similar manner to adulterants in alcohol (Guo et al, ). Foodstuffs such as olive oil have been characterized using PS MS with enhanced ionization efficiency by doping the sample with silver nitrate (Lara‐Ortega et al, ).…”

Section: Direct Analysis Of Molecules In Native Statementioning

confidence: 99%

Emerging trends in paper spray mass spectrometry: Microsampling, storage, direct analysis, and applications

Frey

Damon

Badu‐Tawiah

2019

Mass Spectrometry Reviews

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Recent advancements in the sensitivity of chemical instrumentation have led to increased interest in the use of microsamples for translational and biomedical research. Paper substrates are by far the most widely used media for biofluid collection, and mass spectrometry is the preferred method of analysis of the resultant dried blood spot (DBS) samples. Although there have been a variety of review papers published on DBS, there has been no attempt to unify the century old DBS methodology with modern applications utilizing modified paper and paper‐based microfluidics for sampling, storage, processing, and analysis. This critical review will discuss how mass spectrometry has expanded the utility of paper substrates from sample collection and storage, to direct complex mixture analysis to on‐surface reaction monitoring.

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Plasma‐based ambient mass spectrometry: Recent progress and applications

Yue

Zhao

et al. 2021

Mass Spectrometry Reviews

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Ambient mass spectrometry (AMS) has grown as a group of advanced analytical techniques that allow for the direct sampling and ionization of the analytes in different statuses from their native environment without or with minimum sample pretreatments. As a significant category of AMS, plasma-based AMS has gained a -• , CO 3 -• , NO 2 -• , and the most abundant species is O 2 -• (Cody & Dane, 2013). A review by Gross (Gross, 2014) explained the ionization mechanism in greater detail, and the typical ions generated in the DART source are shown in Table 2. Another

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Direct olive oil analysis by mass spectrometry: A comparison of different ambient ionization methods

Cited by 40 publications

References 52 publications

Olive Oil Quality and Authenticity Assessment Aspects Employing FIA-MRMS and LC-Orbitrap MS Metabolomic Approaches

Olive Oil Quality and Authenticity Assessment Aspects Employing FIA-MRMS and LC-Orbitrap MS Metabolomic Approaches

Emerging trends in paper spray mass spectrometry: Microsampling, storage, direct analysis, and applications

Plasma‐based ambient mass spectrometry: Recent progress and applications

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