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Related Concept Videos

Mass Spectrometry: Complex Analysis01:21

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Mass spectrometry is an important technique for the identification of pure compounds. However, it has some limitations for the analysis of complex mixtures, often due to excessive fragmentation making the spectrum too complicated to decipher. Mass spectrometry can be combined with suitable separation methods in sequence, forming hyphenated methods, which are useful in the analysis of complex mixtures.
GC–MS is a powerful hyphenated method commonly used in forensics and environmental...
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Mass spectrometry is a powerful characterization technique that can identify and separate a wide variety of compounds ranging from chemical to biological entities, based on their mass-to-charge ratio (m/z). The instruments that allow this detection, known as mass spectrometers, have three components: an ion source, a mass analyzer, and a detector. These spectrometers differ based on the nature of their ion source and analyzers.Matrix-assisted laser desorption ionization (MALDI) is a commonly...
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Related Experiment Video

Updated: Jan 15, 2026

Leaf Spray Mass Spectrometry: A Rapid Ambient Ionization Technique to Directly Assess Metabolites from Plant Tissues
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Mass Spectrometry-Based Methods for Plant Metabolite Profiling.

Ashwani Punia1,2, Satyakam1,2, Rajiv Kumar3,4

  • 1Biotechnology Division, CSIR-Institute of Himalayan Bioresource Technology (IHBT), Palampur, HP, India.

Methods in Molecular Biology (Clifton, N.J.)
|October 6, 2025
PubMed
Summary
This summary is machine-generated.

Plants accumulate specialized metabolites like flavonoids and phenolics to cope with cold stress. This chapter details plant metabolite profiling, covering extraction and identification methods for understanding stress resilience.

Keywords:
Cold stressGC-MSLC-MSMetabolitesMetabolomics

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Area of Science:

  • Plant Science
  • Biochemistry
  • Metabolomics

Background:

  • Cold and freezing are significant abiotic stresses impacting plant growth and survival.
  • Plants synthesize specialized metabolites, including flavonoids, phenolics, alkaloids, saponins, and tannins, for acclimatization and defense.
  • Understanding plant metabolite accumulation is crucial for assessing stress impact and resilience.

Purpose of the Study:

  • To provide a concise overview of plant metabolite profiling techniques.
  • To highlight the importance of sample preparation in metabolomics.
  • To review various extraction and analytical methods for metabolite identification and quantification.

Main Methods:

  • Discussion of sample harvesting, drying, and metabolite extraction procedures.
  • Review of liquid solvent extraction for non-volatile compounds (alkaloids, saponins, tannins).
  • Overview of advanced extraction methods for volatile compounds (headspace analysis, SPME) and analytical techniques (LC-MS, GC-MS).

Main Results:

  • Sample preparation is identified as a critical step influencing the accuracy of metabolomic results.
  • Different extraction methods are suitable for various classes of plant metabolites.
  • LC-MS and GC-MS are presented as key analytical platforms for comprehensive metabolite profiling.

Conclusions:

  • Accurate plant metabolite profiling requires careful consideration of sample preparation and appropriate extraction techniques.
  • Advanced analytical methods enable detailed identification and quantification of diverse metabolites.
  • Metabolite profiling is essential for studying plant responses to environmental stresses like cold.