Application of Matrix-Assisted Laser Desorption/Ionization Mass Spectrometry Imaging for Evaluating the Quality of Fish Fillets

Consumption of fish is rapidly increasing worldwide. It is important to evaluate fish fillet quality because fish undergoes physical and chemical changes during frozen storage. Fish fillets exhibit formaldehyde (FA) accumulation from the decomposition of trimethylamine N-oxide. FA is a powerful prot...

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Main Authors: Mizuki Morisasa, Keisuke Kimura, Motoki Sumida, Saya Fukumoto, Tadashi Tamura, Riko Takeuchi, Tsukasa Mori, Naoko Goto-Inoue
Format: Article
Language:English
Published: MDPI AG 2020-04-01
Series:Foods
Subjects:
Online Access:https://www.mdpi.com/2304-8158/9/4/402
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author Mizuki Morisasa
Keisuke Kimura
Motoki Sumida
Saya Fukumoto
Tadashi Tamura
Riko Takeuchi
Tsukasa Mori
Naoko Goto-Inoue
author_facet Mizuki Morisasa
Keisuke Kimura
Motoki Sumida
Saya Fukumoto
Tadashi Tamura
Riko Takeuchi
Tsukasa Mori
Naoko Goto-Inoue
author_sort Mizuki Morisasa
collection DOAJ
description Consumption of fish is rapidly increasing worldwide. It is important to evaluate fish fillet quality because fish undergoes physical and chemical changes during frozen storage. Fish fillets exhibit formaldehyde (FA) accumulation from the decomposition of trimethylamine N-oxide. FA is a powerful protein denaturant; thus, it is important to avoid FA buildup during fish processing to preserve fish quality, especially texture. To determine where FA accumulates, in order to maintain the quality of fish fillets, we performed matrix-assisted laser desorption/ionization mass spectrometry imaging, aiming to identify muscle-derived peptides, which reflect conditions such as denaturation and/or aggregation. We used frozen sections from which lipophilic molecules were washed out and detected various peptide peaks. Furthermore, we tried to identify indices to represent fish fillet softening by protease treatment. We could detect characteristic peaks owing to FA and protease treatment; the findings were consistent with the results of texture profiles showing fish fillet’s real solidity. These molecules might thus serve as effective markers to evaluate fish fillet quality.
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spelling doaj.art-1c617fd2691046d6be7e20d8fb1a75772023-11-19T20:19:41ZengMDPI AGFoods2304-81582020-04-019440210.3390/foods9040402Application of Matrix-Assisted Laser Desorption/Ionization Mass Spectrometry Imaging for Evaluating the Quality of Fish FilletsMizuki Morisasa0Keisuke Kimura1Motoki Sumida2Saya Fukumoto3Tadashi Tamura4Riko Takeuchi5Tsukasa Mori6Naoko Goto-Inoue7Department of Marine Science and Resources, College of Bioresource Sciences, Nihon University, 1866 Kameino, Fujisawa, Kanagawa 252-0880, JapanDepartment of Marine Science and Resources, College of Bioresource Sciences, Nihon University, 1866 Kameino, Fujisawa, Kanagawa 252-0880, JapanCentral Research Institute, Maruha Nichiro Corporation, 16-2, Wadai, Tsukuba, Ibaraki 300-4295, JapanCentral Research Institute, Maruha Nichiro Corporation, 16-2, Wadai, Tsukuba, Ibaraki 300-4295, JapanCentral Research Institute, Maruha Nichiro Corporation, 16-2, Wadai, Tsukuba, Ibaraki 300-4295, JapanCentral Research Institute, Maruha Nichiro Corporation, 16-2, Wadai, Tsukuba, Ibaraki 300-4295, JapanDepartment of Marine Science and Resources, College of Bioresource Sciences, Nihon University, 1866 Kameino, Fujisawa, Kanagawa 252-0880, JapanDepartment of Marine Science and Resources, College of Bioresource Sciences, Nihon University, 1866 Kameino, Fujisawa, Kanagawa 252-0880, JapanConsumption of fish is rapidly increasing worldwide. It is important to evaluate fish fillet quality because fish undergoes physical and chemical changes during frozen storage. Fish fillets exhibit formaldehyde (FA) accumulation from the decomposition of trimethylamine N-oxide. FA is a powerful protein denaturant; thus, it is important to avoid FA buildup during fish processing to preserve fish quality, especially texture. To determine where FA accumulates, in order to maintain the quality of fish fillets, we performed matrix-assisted laser desorption/ionization mass spectrometry imaging, aiming to identify muscle-derived peptides, which reflect conditions such as denaturation and/or aggregation. We used frozen sections from which lipophilic molecules were washed out and detected various peptide peaks. Furthermore, we tried to identify indices to represent fish fillet softening by protease treatment. We could detect characteristic peaks owing to FA and protease treatment; the findings were consistent with the results of texture profiles showing fish fillet’s real solidity. These molecules might thus serve as effective markers to evaluate fish fillet quality.https://www.mdpi.com/2304-8158/9/4/402matrix-assisted laser desorption/ionizationmass spectrometry imagingformaldehydeproteasepeptide
spellingShingle Mizuki Morisasa
Keisuke Kimura
Motoki Sumida
Saya Fukumoto
Tadashi Tamura
Riko Takeuchi
Tsukasa Mori
Naoko Goto-Inoue
Application of Matrix-Assisted Laser Desorption/Ionization Mass Spectrometry Imaging for Evaluating the Quality of Fish Fillets
Foods
matrix-assisted laser desorption/ionization
mass spectrometry imaging
formaldehyde
protease
peptide
title Application of Matrix-Assisted Laser Desorption/Ionization Mass Spectrometry Imaging for Evaluating the Quality of Fish Fillets
title_full Application of Matrix-Assisted Laser Desorption/Ionization Mass Spectrometry Imaging for Evaluating the Quality of Fish Fillets
title_fullStr Application of Matrix-Assisted Laser Desorption/Ionization Mass Spectrometry Imaging for Evaluating the Quality of Fish Fillets
title_full_unstemmed Application of Matrix-Assisted Laser Desorption/Ionization Mass Spectrometry Imaging for Evaluating the Quality of Fish Fillets
title_short Application of Matrix-Assisted Laser Desorption/Ionization Mass Spectrometry Imaging for Evaluating the Quality of Fish Fillets
title_sort application of matrix assisted laser desorption ionization mass spectrometry imaging for evaluating the quality of fish fillets
topic matrix-assisted laser desorption/ionization
mass spectrometry imaging
formaldehyde
protease
peptide
url https://www.mdpi.com/2304-8158/9/4/402
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