Use of high-performance liquid chromatography with diode array detection coupled to electrospray-Qq-time-of-flight mass spectrometry for the direct characterization of the phenolic fraction in organic commercial juices

HYDROXYCINNAMIC ACID DERIVATIVES AND FLAVONOL PROFILES OF MAQUI (Aristotelia chilensis) FRUITS

“…On the basis of these characteristics, this compound was tentatively assigned as 5-galloylquinic acid, the spectrum of which is congruent with the data presented by Clifford 21 . Peak 4 was assigned as protocatechuic-4-glucosidic acid based on the MS/MS data in which a pseudomolecular ion peak [M-H] -was observed at m/z 315, which is congruent with the data presented by Rodriguez-Medina 22 . The retention times and spectroscopic characteristics of these compounds are detailed in Table 1.…”

In vitro bioaccessibility and antioxidant activity of anthocyanins from mulberry (Morus atropurpurea Roxb.) following simulated gastro-intestinal digestion

“…4) increased in relative abundance after pancreatic digestion and the candidate anthocyanin breakdown products need to be further identified. Table 2 illustrated the proposed phenolic compounds based on their MS and fragmentation data, PDA spectra and support by previous work (Bouayed, Hoffmann, & Bohn, 2011;Rodríguez-Medina, Segura-Carretero, & Fernández-Gutiérrez, 2009;Wootton-Beard, Moran, & Ryan, 2011). Here, Fraction 1 is a purified mixture of the two cyanidin anthocyanins, which could be recognized containing no other phenolic compounds, therefore, the phenolic compounds produced after the gastrointestinal digestion could be regarded as the product of anthocyanin decomposition.…”

On the use of Ethephon as abscising agent in cv. Crimson Seedless table grape production: Combination of Fruit Detachment Force, Fruit Drop and metabolomics

“…MS data were assigned to metabolites on the basis of accurate mass, isotopic distribution and fragmentation pattern in both positive and negative ion modes. Assignments were confirmed after comparison with literature data (see for instance Cantos, Espín, & Tomás-Barberán, 2002;Cavaliere et al, 2008;Cejudo-Bastante, Pérez-Coello, & Hermosín-Gutiérrez, 2010;Flamini, 2013;Guerrero et al, 2009;Gómez-Romero, Segura-Carretero, & Fernández-Gutiérrez, 2010;Kajdžanoska, Gjamovski, & Stefova, 2010;Kneknopoulos, Skouroumounis, Hayasaka, & Taylor, 2011;Rodríguez-Medina, Segura-Carretero, & Fernández-Gutiérrez, 2009;Sonni et al, 2011;Stalmach, Edwards, Wightman, & Crozier, 2011;Stefova & Ivanova, 2011) and with on-line public metabolite databases (PubChem <http://pubchem. ncbi.nlm.nih.gov/>, Metlin <http://metlin.scripps.edu/> and Chemspider <http://www.chemspider.com>).…”