scholarly journals HPLC/MS-MS Identification of Oak Quercus aegilops Root Tannins

2021 ◽  
Vol 2021 ◽  
pp. 1-10
Author(s):  
Ayed S. Amr ◽  
Mousa N. Ahmad ◽  
Jalal A. Zahra ◽  
Mai A. Abdullah
Keyword(s):  
Ellagic Acid ◽  
Acid Ester ◽  
Polyphenolic Compounds ◽  
Root Bark ◽  
Biological Functions ◽  
Plant Kingdom ◽  
Esi Ms ◽  
Oak Tree ◽  
Common Oak ◽  
Ms Search

Tannins are natural polyphenolic compounds widely distributed in the plant kingdom in the leaves, bark, fruits, and other parts. They have various biological functions in humans and animals and are used mainly in the pharmaceutical and cosmetic industries. The aim of this work was to isolate, extract, purify, and identify the tannins from the root bark of a common oak tree (Quercus aegilops L.) in Jordan and around the Mediterranean. The results showed that at least one form of ellagitannin (ellagic acid ester), quercitrin, afzelechin, valoneic acid, trigalloyl glucose, and catechin was identified in addition to two unidentified compounds. Results of this work can help in developing an ESI MS/MS search library for the constituents of the tannins of oak (Quercus aegilops L.) root bark.

Investigation of ellagic acid sourcing as a dietary supplement by UFLC-PDA-ESI-MS/MS

2019 ◽  
Author(s):  
A Girme ◽  
G Saste ◽  
S Pawar ◽  
R Singh ◽  
L Hingorani
Keyword(s):  
Dietary Supplement ◽  
Ellagic Acid ◽  
Esi Ms

New Camptothecin and Ellagic Acid Analogues from the Root Bark ofCamptotheca acuminata

Planta Medica ◽  
2004 ◽  
Vol 70 (12) ◽  
pp. 1216-1221 ◽  
Author(s):  
Zhizhen Zhang ◽  
Shiyou Li ◽  
Shanmin Zhang ◽  
Chun Liang ◽  
David Gorenstein ◽  
...  
Keyword(s):  
Ellagic Acid ◽  
Root Bark

Solid state fermentation of pomegranate husk: Recovery of ellagic acid by SEC and identification of ellagitannins by HPLC/ESI/MS

2018 ◽  
Vol 22 ◽  
pp. 99-104 ◽  
Author(s):  
Leonardo Sepúlveda ◽  
Jorge E. Wong-Paz ◽  
Juan Buenrostro-Figueroa ◽  
Juan A. Ascacio-Valdés ◽  
Antonio Aguilera-Carbó ◽  
...  
Keyword(s):  
Solid State ◽  
Solid State Fermentation ◽  
Ellagic Acid ◽  
Esi Ms ◽  
Pomegranate Husk

scholarly journals Characterization of Polyphenolic Compounds in Unripe Chinotto (Citrus myrtifolia) Fruit by HPLC/PDA/ESI/MS-MS

2011 ◽  
Vol 6 (12) ◽  
pp. 1934578X1100601 ◽  
Author(s):  
Monica Scordino ◽  
Leonardo Sabatino ◽  
Adalgisa Belligno ◽  
Giacomo Gagliano
Keyword(s):  
Soft Drink ◽  
Polyphenolic Compounds ◽  
Relative Distribution ◽  
Lower Content ◽  
Esi Ms ◽  
Negative Mode ◽  
Polymethoxylated Flavones ◽  
Unripe Fruits

The flavonoid and furocoumarin composition was investigated of peel and pulp tissues of unripe fruits of Citrus myrtifolia Rafinesque, an ingredient of the popular soft drink “chinotto”. Compound separation and identification was made using an HPLC-PDA detector coupled to ESI/MS/MS in positive and negative mode. Eighteen compounds (3-hydroxy-3-methylglutaryl-, C- and O-glycosyl flavonoids, furocoumarins and polymethoxylated flavones) were identified and quantified. Data indicated that the overall amount of flavonoids and furocoumarins in peel was higher than in the pulp, even though their relative distribution did not significantly change, apart from a different distribution of flavones and a lower content of naringin in the peel.

scholarly journals Identification of Ellagic Acid Derivatives from Stem Bark of Syzygium Guineense (Myrtaceae)

2007 ◽  
Vol 2 (3) ◽  
pp. 1934578X0700200
Author(s):  
Jules Desire Djoukeng ◽  
Eliane Abou-Mansour ◽  
Leon Azefack Tapondjou ◽  
David Lontsi ◽  
Raffaele Tabacchi
Keyword(s):  
Ellagic Acid ◽  
Radical Scavenging ◽  
2D Nmr ◽  
Stem Bark ◽  
Dpph Assay ◽  
Spectrometric Data ◽  
Esi Ms ◽  
Syzygium Guineense ◽  
Fragmentation Patterns

An LC-DAD-ESI-MSn technique was developed to investigate crude extracts of the stem bark of S. guineense for phenolic compounds. Ellagic acids were detected on the basis of their UV absorption spectra and ESI-MS fragmentation patterns. Six ellagic acid conjugates in the complex extract of S. guineense were identified. With the aim to confirm the structures, further purification of the extract afforded the known 3-O-ellagic acid-4′-O-α-rhampyranonosides (3), two new ellagic acid rhamnopyranosides, 3-O-methylellagic acid-4′-O-α-2″-O-acetylrhamnopyranoside (4) and 3-O-methylellagic acid-4′-O-α-3″-O-acetylrhamnopyranoside (6). The structures were identified on the basis of 1D- and 2D- NMR, IR, and UV spectroscopic and mass spectrometric data. The HMBC and NOESY data of these compounds were most useful for determination of their structures. Radical scavenging activities were evaluated in the 1,1-diphenyl-2-picrylhydrazyl (DPPH) assay. Compounds 3, 4 and 6, with IC50 values of 6.1 ± 0.5, 5.8 ± 0.4, and 6.2 ± 0.4 μM, respectively were as active as ellagic acid (1) (IC50 = 4.9 ± 0.3 μM) and more active than catechin (IC50=10.8 ± 0.3 μM).

scholarly journals Cytotoxic Prenylated Polyphenolic Compounds from Maackia amurensis Root Bark

2017 ◽  
Vol 12 (7) ◽  
pp. 1934578X1701200
Author(s):  
Marina V. Veselova ◽  
Sergey A. Fedoreyev ◽  
Darya V. Tarbeeva ◽  
Nadezda I. Kulesh ◽  
Anatoliy I. Kalinovskiy ◽  
...  
Keyword(s):  
Cytotoxic Activity ◽  
Cell Lines ◽  
Hela Cells ◽  
Human Cancer ◽  
Polyphenolic Compounds ◽  
Root Bark ◽  
Human Cancer Cell ◽  
Human Cancer Cell Lines ◽  
Maackia Amurensis ◽  
New Compounds

Two new prenylated flavanones, isomaackiaflavanone A (1), isomaackiaflavanone B (2) and a new prenylated stilbene maackiastilbene (3), along with five known flavanones were isolated from the root bark of Maackia amurensis using repeated column chromatography on silica gel, Sephadex LH-20 and octadecyl silica (ODS-A) sorbents. The structures of the new compounds were elucidated by HPLC–PDA–MS, HR-ESI-MS, 1H, 13C, 1H–1H COSY, HSQC, ROESY and HMBC NMR analyses. The cytotoxicity of compounds 1–2, 4–8 against two human cancer cell lines HeLa and SK-MEL-5 was tested using the MTS method. Compounds 4, 6 and 8 showed the strongest cytotoxic activity among the compounds tested with IC50 values of 6.5, 8.8 and 7.7 μM, against SK-MEL-5 cells and 8.2, 18.8 and 12 μM against HeLa cells, respectively.

Isolation, purification and identification of ellagic acid derivatives, catechins, and procyanidins from the root bark of Anisophyllea dichostyla R. Br.

2007 ◽  
Vol 45 (3) ◽  
pp. 472-485 ◽  
Author(s):  
F. Khallouki ◽  
R. Haubner ◽  
W.E. Hull ◽  
G. Erben ◽  
B. Spiegelhalder ◽  
...  
Keyword(s):  
Ellagic Acid ◽  
Root Bark ◽  
Ellagic Acid Derivatives

The inhibition of human glutathione S-transferases activity by plant polyphenolic compounds ellagic acid and curcumin

2007 ◽  
Vol 45 (2) ◽  
pp. 286-295 ◽  
Author(s):  
Rose Hayeshi ◽  
Isaac Mutingwende ◽  
William Mavengere ◽  
Vimbai Masiyanise ◽  
Stanley Mukanganyama
Keyword(s):  
Ellagic Acid ◽  
Polyphenolic Compounds ◽  
Glutathione S Transferases
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