Laser Desorption Ionization-Mass Spectrometry with Graphite Carbon Black Nanoparticles for Simultaneous Detection of Taste- And Odor-Active Compounds

Mitsuru Tanaka, Keishiro Arima, Tomotaka Takeshita, Yuri Kunitake, Naoto Ohno, Miho Imamura, Toshiro Matsui

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)

Abstract

There is no analytical system to directly and simultaneously detect taste- and odor-active compounds. Graphite carbon black (GCB) nanoparticles, a chemical adsorbent for a variety of compounds, including gaseous molecules, which consists of nanoparticles made from multilayered sheets of sp2-conjugated atomic carbon, have the characteristics required for a surface-assisted laser desorption ionization-mass spectrometry (SALDI-MS) material. Thus, in this study, GCB-LDI-MS was developed for the simultaneous detection of taste- and odor-active compounds. The proposed GCB-LDI-MS successfully detected volatile compounds, including ethyl esters, alcohols, fatty acids, and aldehydes with up to 16 carbons (maximum carbon number of the tested compounds), which could not be detected by conventional matrix-assisted-LDI-MS. Moreover, a series of taste-active compounds (e.g., amino acids and sugars) and various volatile compounds (e.g., ethyl esters, aldehydes, alcohols, fatty acids, and lactones) as a mixture in liquid samples were also detected by the present GCB-LDI-MS. Thus, the proposed simple and rapid detection technique can digitize the analysis of flavor compounds, which provides an analytical concept for flavor scanning to evaluate the palatability of food products.

Original languageEnglish
Pages (from-to)2187-2194
Number of pages8
JournalACS Applied Nano Materials
Volume5
Issue number2
DOIs
Publication statusPublished - Feb 25 2022

All Science Journal Classification (ASJC) codes

  • General Materials Science

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