Li, Bin; Ge, Junyue; Liu, Wei; Hu, Dejun; Li, Ping published the artcile< Unveiling spatial metabolome of Paeonia suffruticosa and Paeonia lactiflora roots using MALDI MS imaging>, Name: (9Z,12Z)-Methyl octadeca-9,12-dienoate, the main research area is metabolome Paeonia root MALDI mass spectrometry; Moutan Cortex; Paeoniae Radix Alba; mass spectrometry imaging; monoterpenes; spatial distribution; tannins.
Summary : Paeonia suffruticosa (PS) and Paeonia lactiflora (PL) belong to the only genus in the family Paeoniaceae. Comparative anal. of the spatial metabolomes of PS and PL has rarely been performed. In this work, combined with multiple matrixes and dual-polarity detection, high mass resolution matrix-assisted laser desorption/ionization MS imaging (MALDI MSI) and MALDI tandem MSI were performed on the root sections of the two Paeonia species. The spatial distributions of many metabolites including monoterpene and paeonol glycosides, tannins, flavonoids, saccharides and lipids were systematically characterized. The ambiguous tissue distribution of the two isomers paeoniflorin and albiflorin were distinguished by tandem MSI using lithium salt doped 2,5-dihydroxybenzoate matrix. In addition, the major intermediates involved in the biosynthetic pathway of gallotannins were successfully localized and visualized in the root sections. High-mass resolution MALDI full-scan MSI provides comprehensive and accurate spatial distribution of metabolites. The anal. power of the technique was further tested in the tandem MSI of two isomers. The ion images of individual metabolites provide chem. and microscopic characteristics beyond morphol. identification, and the detailed spatiochem. information could not only improve our understanding of the biosynthetic pathway of hydrolyzable tannins, but also ensure the safety and effectiveness of their medicinal use.
New Phytologist published new progress about Gallotannins Role: ANT (Analyte), BSU (Biological Study, Unclassified), PUR (Purification or Recovery), THU (Therapeutic Use), ANST (Analytical Study), BIOL (Biological Study), PREP (Preparation), USES (Uses). 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Name: (9Z,12Z)-Methyl octadeca-9,12-dienoate.
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