Visualization of Asparaptine in Asparagus (Asparagus officinalis) Using MALDI-IMS

Asparaptine, an inhibitor of angiotensin-converting enzyme (ACE), is a newly discovered compound in asparagus. Asparaptine is a conjugate of arginine and asparagusic acid; this compound is suggested to be effective for preventing high blood pressure. For this reason, asparaptine has attracted remark...

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Bibliographic Details
Published inAnalytical Sciences Vol. 34; no. 9; pp. 997 - 1001
Main Authors MIYOSHI, Kohei, ENOMOTO, Yosuke, FUKUSAKI, Eiichiro, SHIMMA, Shuichi
Format Journal Article
LanguageEnglish
Published Singapore The Japan Society for Analytical Chemistry 10.09.2018
Springer Nature Singapore
Japan Science and Technology Agency
Subjects
Analytical Chemistry
Angiotensin
Arginine
Asparagus
Asparagus officinalis
asparaptine
Blood pressure
Chemistry
Hypertension
Imaging mass spectrometry
Ionization
Ions
Localization
MALDI
Mass spectrometry
Mass spectroscopy
Peptidyl-dipeptidase A
plant
Vegetables
Imaging mass spectrometry
asparagus
MALDI
plant
asparaptine
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Summary:Asparaptine, an inhibitor of angiotensin-converting enzyme (ACE), is a newly discovered compound in asparagus. Asparaptine is a conjugate of arginine and asparagusic acid; this compound is suggested to be effective for preventing high blood pressure. For this reason, asparaptine has attracted remarkable attention in recent years, and it was therefore necessary to carry out further research. No studies to date have investigated the localization of asparaptine in asparagus. In this study, the localization of asparaptine in asparagus was clarified using matrix-assisted laser desorption/ionization imaging mass spectrometry (MALDI-IMS), a powerful method to visualize molecules.
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ISSN:0910-6340
1348-2246
DOI:10.2116/analsci.18SCP03