scholarly journals Ambient Ionization Mass Spectrometry Imaging by Desorption Electrospray Ionization (DESI)

2019 ◽  
Vol 67 (4) ◽  
pp. 112-116
Author(s):  
Akira Motoyama ◽  
Keishi Kihara
Keyword(s):  
Mass Spectrometry ◽  
Electrospray Ionization ◽  
Mass Spectrometry Imaging ◽  
Desorption Electrospray Ionization ◽  
Ambient Ionization ◽  
Ionization Mass Spectrometry ◽  
Ionization Mass ◽  
Ambient Ionization Mass Spectrometry

Adhesive film applications help to prepare strawberry fruit sections for desorption electrospray ionization-mass spectrometry imaging

2021 ◽  
Author(s):  
Hirofumi Enomoto
Keyword(s):  
Mass Spectrometry ◽  
Electrospray Ionization ◽  
Electrospray Ionization Mass Spectrometry ◽  
Mass Spectrometry Imaging ◽  
Desorption Electrospray Ionization ◽  
Biological Tissues ◽  
Ionization Mass Spectrometry ◽  
High Water Content ◽  
Ionization Mass ◽  
Adhesive Film

ABSTRACT Desorption electrospray ionization-mass spectrometry imaging (DESI-MSI) is a powerful tool to analyze the distribution of metabolites in biological tissues. Cryosectioning of biological tissues is usually required prior to DESI-MSI, but it can be difficult for tissues that are fragile, hard, and have a high-water content. The Kawamoto method uses transparent adhesive films to prepare cryosections; however, its application for plant tissues, such as strawberry tissues, in DESI-MSI has not been verified. In this study, strawberry cryosections maintained original structures were prepared using adhesive film. Subsequently, numerous peaks were detected for the sections using the positive and negative ion modes of DESI-MSI. Several primary and specialized metabolites, such as amino acids, sugars, organic acids, and flavonoids, were identified and visualized. These results suggest the use of adhesive films when cryosectioning could improve DESI-MSI analysis of the metabolites in strawberry fruits and various tissues of other plant species.

scholarly journals Peptide and Protein Assays Using Customizable Bio-Affinity Arrays Combined with Ambient Ionization Mass Spectrometry

2021 ◽  
Author(s):  
xuemeng zhang ◽  
Wei Wang ◽  
Richard N. Zare ◽  
Qianhao Min
Keyword(s):  
Mass Spectrometry ◽  
High Throughput ◽  
Desorption Electrospray Ionization ◽  
Ambient Ionization ◽  
Ionization Mass Spectrometry ◽  
Ionization Mass ◽  
Label Free ◽  
Ambient Ionization Mass Spectrometry ◽  
Desi Ms ◽  
Protein Assays

High-throughput identification and quantification of protein/peptide biomarkers from biofluids in a label-free manner is achieved by interfacing bio-affinity arrays (BAAs) with nano-electrospray desorption electrospray ionization mass spectrometry (nano-DESI-MS). A wide...

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