Plant Metabolomics: Evaluation of Different Extraction Parameters for Nontargeted UPLC-ESI-QTOF-Mass Spectrometry at the Example of White <i>Asparagus officinalis</i>

Creydt, Marina; Arndt, Maike; Hudzik, Daria; Fischer, Markus

doi:10.1021/acs.jafc.8b06037

Cited by 36 publications

(18 citation statements)

References 51 publications

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“…The extraction procedure is a critical step in performing nontargeted analyzes to achieve the best possible and reproducible analyte coverage and should therefore be carefully planned. For this reason, numerous studies have been published in the last few years for the different omics technologies [28][29][30]. Usually all processes have in common that a cell disruption is carried out first.…”

Section: Sample Extractionmentioning

confidence: 99%

“…Added to this is the variability with regard to the columns used when coupling with chromatographic methods. According to our own experience, it makes sense to develop a method for the detection of overly polar as well as overly nonpolar compounds, as well as a simple extraction procedure for water‐ and fat‐rich foods [30]. We were also able to show with asparagus (water‐rich) and hazelnuts (fat‐rich) that the lipid profile in particular is most meaningful when it comes to proof of origin [7, 8].…”

Section: Establishment In Routine Analyticsmentioning

confidence: 99%

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Food authentication in real life: How to link nontargeted approaches with routine analytics?

Creydt¹,

Fischer²

2020

Electrophoresis

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In times of increasing globalization and the resulting complexity of trade flows, securing food quality is an increasing challenge. The development of analytical methods for checking the integrity and, thus, the safety of food is one of the central questions for actors from science, politics, and industry. Targeted methods, for the detection of a few selected analytes, still play the most important role in routine analysis. In the past 5 years, nontargeted methods that do not aim at individual analytes but on analyte profiles that are as comprehensive as possible have increasingly come into focus. Instead of investigating individual chemical structures, data patterns are collected, evaluated and, depending on the problem, fed into databases that can be used for further nontargeted approaches. Alternatively, individual markers can be extracted and transferred to targeted methods. Such an approach requires (i) the availability of authentic reference material, (ii) the corresponding highresolution laboratory infrastructure, and (iii) extensive expertise in processing and storing very large amounts of data. Probably due to the requirements mentioned above, only a few methods have really established themselves in routine analysis. This review article focuses on the establishment of nontargeted methods in routine laboratories. Challenges are summarized and possible solutions are presented.

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Section: Sample Extractionmentioning

confidence: 99%

Section: Establishment In Routine Analyticsmentioning

confidence: 99%

Food authentication in real life: How to link nontargeted approaches with routine analytics?

Creydt¹,

Fischer²

2020

Electrophoresis

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“…As all four QC samples were based on the same sample material, differences in the obtained total ion chromatograms (TICs) and peak areas could solely arise from the metabolite-dependent extractability of the selected method. The long-term extract stability was not investigated as it had been proven for the present extraction procedures already [9].…”

Section: Resultsmentioning

confidence: 99%

“…A recent study investigated lipophilic extraction procedures for plant matrices with low fat, low protein, and high water contents such as Asparagus officinalis , determining the Bligh and Dyer method as the most suitable method for such matrices [9]. In contrast to this recent study, the comparison of four well-known extraction procedures for the enrichment of lipids in potato tubers resulted in the selection of the Folch method, which exhibited a comparatively high number of detected features with high sums of peak areas and heights.…”

Section: Discussionmentioning

confidence: 99%

“…Therefore, a workflow has to be established that separates the major constituents of potato tubers, while substances of interest are enriched. In this context, five biphasic extraction systems, some of which were recently tested for matrices with low fat and high water contents, such as asparagus in a metabolomic approach [9], were compared regarding their number of detected mass features and their sum of all peak areas and heights in a non-targeted approach. Furthermore, relative peak areas of various galacto- and glucocerebrosides, phosphatidylcholines and -ethanolamines, di- and triglycerides, acylated steryl glucosides, and further potato metabolites, representing a wide range of lipids, were analyzed in a targeted approach.…”

Section: Introductionmentioning

confidence: 99%

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Polar Lipids in Starch-Rich Commodities to be Analyzed with LC-MS-Based Metabolomics—Optimization of Ionization Parameters and High-Throughput Extraction Protocols

2019

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Metabolomics-based approaches are still receiving growing attention with regard to food authenticity testing. Such studies require enormous sample numbers with negligible experimental or analytical variations to obtain statistically reliable results. In this context, an extraction protocol in line with optimized ionization parameters was developed in consideration of potential starch-derived matrix effects focusing on the polar lipids of potatoes. Therefore, well-known extractions (Bligh and Dyer, Folch, Matyash, and a n-hexane-based procedure) were compared in a non-targeted and a targeted approach regarding the extractability of their lipids such as phosphatidylcholines, phosphatidylethanolamines, galacto- and glucocerebrosides, di- and triglycerides, and acylated steryl glucosides. The selected Folch method was also scrutinized in view of its ability to remove the matrix’s starch and consequently improved by substituting trichlormethane with ethyl acetate as a “greener” Folch approach. Moreover, the challenge of starch-derived contamination and imminent ion suppression in the electrospray ionization source (ESI) was addressed by an optimization of ionization parameters varying desolvation settings, removing injection peaks, and increasing the angles and distances of the ESI-device. Long-term stability tests over five days were performed successfully with a combination of appropriate extraction and decreased desolvation settings during ionization. In conclusion, the present methodology provided the basis for on-going large-scale metabolomic studies with respect to the botanical origin of potatoes using UPLC-IMS-QToF (ultra-high performance liquid chromatography ion mobility spectroscopy quadrupole-time of flight mass spectrometer).

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Study on changes in pigment composition during the blooming period of safflower based on plant metabolomics and semi‐quantitative analysis

Zhang

Tang

et al. 2021

J of Separation Science

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Red and yellow pigments are the major ingredients of safflower, often used to color food and cosmetics. Carthamin was the main component of red pigment and hydroxysafflor yellow A and anhydrosafflower yellow B were representative components of yellow pigment. Plant metabolomics and semi‐quantitative analysis were used to analyze the changes of pigment composition during the blooming period, especially these characteristic components. Carthamin, hydroxysafflor yellow A, anhydrosafflower yellow B, and other components were screened out as differential metabolites based on plant metabolomics. Then semi‐quantitative analysis was used to quantify these three representative components of pigments. Experimental results showed that the content of pigments has dynamic changes along with flowering, in the early blooming period, yellow pigment accumulated much and red pigment was low in content. In the middle period, the accumulation rate of the yellow pigment slowed down and content was stabilized. In the next step, the content of yellow pigments gradually decreased, and the content of red pigments gradually increased. Later, the level of yellow pigment decreased significantly, and the accumulation rate of red pigment increased significantly. Last, the appearance color of safflower was red, with yellow parts barely visible, and accumulation of red pigment was the highest and of the yellow pigment was the lowest in content.

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Plant Metabolomics: Evaluation of Different Extraction Parameters for Nontargeted UPLC-ESI-QTOF-Mass Spectrometry at the Example of White Asparagus officinalis

Cited by 36 publications

References 51 publications

Food authentication in real life: How to link nontargeted approaches with routine analytics?

Food authentication in real life: How to link nontargeted approaches with routine analytics?

Polar Lipids in Starch-Rich Commodities to be Analyzed with LC-MS-Based Metabolomics—Optimization of Ionization Parameters and High-Throughput Extraction Protocols

Study on changes in pigment composition during the blooming period of safflower based on plant metabolomics and semi‐quantitative analysis

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