2016
DOI: 10.1016/j.foodchem.2016.05.052
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Identification and characterization of phenolic compounds in hydromethanolic extracts of sorghum wholegrains by LC-ESI-MSn

Abstract: Hydromethanolic extracts of brown, red, and white sorghum whole grains were analysed by LC-MS(n) in negative ESI mode within the range m/z 150-550amu. Besides the flavonoids already reported in sorghum, a number of flavonoids were also identified in the sorghum grain for the first time, including flavanones, flavonols and flavanonols, and flavan-3-ol derivatives. Various phenylpropane glycerides were also found in the sorghum grain, the majority of them are reported here for the first time, and a few of them w… Show more

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Cited by 172 publications
(125 citation statements)
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References 41 publications
(33 reference statements)
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“…Based on the previous literature, the main phenolic compounds in ESB were identified that 1,3-O-dicaffeoylglycerol ( Figure 6B), tricin ( Figure 6C) and 9-HODE ( Figure 6D) [16,19,20]. Among them, 9-HODE, which is the most abundant compound in ESB, is one of the metabolites of linoleic acid, and shows a whitening effect on irritated skin by inhibiting tyrosinase [41].…”
Section: Discussionmentioning
confidence: 97%
See 1 more Smart Citation
“…Based on the previous literature, the main phenolic compounds in ESB were identified that 1,3-O-dicaffeoylglycerol ( Figure 6B), tricin ( Figure 6C) and 9-HODE ( Figure 6D) [16,19,20]. Among them, 9-HODE, which is the most abundant compound in ESB, is one of the metabolites of linoleic acid, and shows a whitening effect on irritated skin by inhibiting tyrosinase [41].…”
Section: Discussionmentioning
confidence: 97%
“…Based on the fragments in previous literature, peak 2 was 1-O-caffeoylglycerol (m/z 253.07, 179.03, 161.02 and 135.04) [15]; peak 3, dicaffeoylglycerides (m/z 415.10, 253.07, 179.03 and 135.04) [16]; peak 4, 1,3-O-dicaffeoylglycerol (m/z 415.10, 253.07, 179.03, 161.02 and 135.04) [16]; peak 5, p-coumaroyl-caffeoylglycerol (m/z 399.10, 253.07, 179.03, 161.02 and 135.04) [17]; peak 6, feruloyl-caffeoylglycerol (m/z 429. 12, 253.07, 193.05, 161.02 and 134.03) [18]; peak 7, tricin (m/z 329.23, 314.04, 299.01 and 271.02) [19]; and peak 9, 9-hydroxyoctadecadienoic acid (9-HODE) (m/z 295.22, 277.21 and 171.10) [20], respectively. Among them, 1,3-O-dicaffeoylglycerol ( Figure 6B), tricin ( Figure 6C) and 9-HODE ( Figure 6D) were identified as major compounds.…”
Section: Uplc-ims-qtof/ms 2 Analysismentioning
confidence: 99%
“…The LC-MS spectra in Fig. 13 depicts high intense peak at 97, 57, and 41 m/z attributed to 1-hexene, propanal and acetonitrile molecular fragments respectively [40,41]. The higher molecular weight species with less intense peaks signal larger molecular fragment in the degraded dye solution.…”
Section: Photocatalytic Mechanism and Metabolite Identification By Lc-msmentioning
confidence: 96%
“…Low molecular weight species were found in the LC-MS analysis of degraded dye solution confirmed complete degradation of large polycyclic dye molecule into its smaller and less harmful forms. This high oxidation attributed to the generation of highly reactive species due to higher pH of the dye solution [40]. The LC-MS spectra in Fig.…”
Section: Photocatalytic Mechanism and Metabolite Identification By Lc-msmentioning
confidence: 97%
“…65 Three poorly known compounds were identified in the present work: 1-O-dihydrocaffeoylglycerol (m/z 255), 1,3-O-dicaffeoyglycerol (m/z 415) and 1,3-O-caffeoyldihydrocaffeoylglycerol (m/z 417), all of which belong to the class of the phenylpropane glycerides, which are glycerol esters of phenolic acids. These compounds were mentioned as being one of the sources of phenolic acids in sorghum grains in the work of Salazar-Lopez et al, 46 and identified in the studies of Kang et al 63 and Wu et al 66 with sorghum grains.…”
Section: (−)Ps-ms Fingerprintsmentioning
confidence: 99%