Isolation of Curcuminoids by Flash Chromatography and Quantification by UPLC-MS/MS Q-TOF

Planta Medica ◽  
2011 ◽  
Vol 77 (05) ◽  
Author(s):  
N Ahmad ◽  
FJ Ahmad ◽  
S Ahmad ◽  
Z Iqbal ◽  
M Shamim ◽  
...  
Keyword(s):  
Molecules ◽  
2021 ◽  
Vol 26 (13) ◽  
pp. 3785
Author(s):  
Sleman Kadan ◽  
Sarit Melamed ◽  
Shoshana Benvalid ◽  
Zipora Tietel ◽  
Yoel Sasson ◽  
...  

Type 2 diabetes (T2D) is a chronic metabolic disease, which could affect the daily life of patients and increase their risk of developing other diseases. Synthetic anti-diabetic drugs usually show severe side effects. In the last few decades, plant-derived drugs have been intensively studied, particularly because of a rapid development of the instruments used in analytical chemistry. We tested the efficacy of Gundelia tournefortii L. (GT) in increasing the translocation of glucose transporter-4 (GLUT4) to the myocyte plasma membrane (PM), as a main strategy to manage T2D. In this study, GT methanol extract was sub-fractionated into 10 samples using flash chromatography. The toxicity of the fractions on L6 muscle cells, stably expressing GLUTmyc, was evaluated using the MTT assay. The efficacy with which GLUT4 was attached to the L6 PM was evaluated at non-toxic concentrations. Fraction 6 was the most effective, as it stimulated GLUT4 translocation in the absence and presence of insulin, 3.5 and 5.2 times (at 250 μg/mL), respectively. Fraction 1 and 3 showed no significant effects on GLUT4 translocation, while other fractions increased GLUT4 translocation up to 2.0 times. Gas chromatography–mass spectrometry of silylated fractions revealed 98 distinct compounds. Among those compounds, 25 were considered anti-diabetic and glucose disposal agents. These findings suggest that GT methanol sub-fractions exert an anti-diabetic effect by modulating GLUT4 translocation in L6 muscle cells, and indicate the potential of GT extracts as novel therapeutic agents for T2D.


2007 ◽  
Vol 387 (5) ◽  
pp. 1855-1861 ◽  
Author(s):  
Audrey Lottmann ◽  
Emilie Cadé ◽  
Majdi Lahd Geagea ◽  
Olivier Delhomme ◽  
Catherine Grand ◽  
...  

2015 ◽  
Vol 4 (2) ◽  
pp. 205
Author(s):  
Indarto Indarto

Artocarpus plant  dadah  Miq.  is one of the species of Artocarpus of the Moraceae family that belongs to a rare plant in nature. This plant is known as the main source of phenolic derivative compound that is flavone compound  in  or  tri-oxygenated and terisoprenilasi in C-3 position ,  and also known as the main source of phenolic compound derived flavonoids, aryl-benzofuran, stilbenoid and xanthane flavonoida, which have biological activity as promoters antitumor, antibacterial, antifungal, antiimflamatori, antikanker and others. This study aimed to isolate and identify the phenolic compounds contained in plant  A .  dadah obtained from the village of Purwoasri, North Metro District, Metro City, Lampung Province. Research stages include collection and sample preparation and extraction, isolation, and purification of compounds using KCV method, flash chromatography  , KKG, and TLC, while the identification of compounds is performed using ultraviolet-visible (UV-VIS) and infrared (IR) spectroscopy. In the present study, three compounds were isolated, one of which was estimated to be flavonoid compounds based on UV-VIS and IR spectra data which also had high activity against murine leukemia P-388 cells with IC 50  3.1 μg / mL. Based on the IR spectral data for the other two compounds there is a -OH uptake in the region of 3200-3500 cm -1, C = C aromatic uptake in the area of 1600-1400 cm -1 , so it is estimated that both compounds are phenolic group compounds.Tumbuhan Artocarpus dadah Miq.merupakan salah satu spesies Artocarpus dari famili Moraceae yang termasuk tumbuhan langka di alam. Tumbuhan ini dikenal sebagai sumber utama senyawa turunan fenolik yaitu senyawa flavon di atau tri-oksigenasi dan terisoprenilasi pada posisi C-3, dan juga dikenal sebagai sumber utama senyawa fenolik turunan flavonoid, aril-benzofuran, stilbenoid dan santon turunan flavonoida, yang memiliki aktivitas biologi sebagai promotor antitumor, antibakteri, antifungal, antiimflamatori, antikanker dan lain-lain.Penelitian ini bertujuan untuk mengisolasi dan mengidentifikasi senyawa fenolik yang terkandung dalam tumbuhan A. dadah yang diperoleh dari desa Purwoasri, Kecamatan Metro Utara, Kota Metro, Provinsi Lampung.Tahapan penelitian yang dilakukan meliputi pengumpulan dan persiapan sampel kemudian ekstraksi, isolasi, dan pemurnian senyawa menggunakan metode KCV, kromatografi flash, KKG, dan KLT, sedangkan identifikasi senyawa dilakukan menggunakan spektroskopi ultraungu-tampak (UV-VIS) dan inframerah (IR). Pada penelitian ini telah berhasil diisolasi tiga senyawa, yang salah satunya diperkirakan senyawa flavonoid berdasarkan data spektrum UV-VIS dan IR yang juga memiliki aktivitas tinggi terhadap sel murine leukemia P-388 dengan IC50 3,1 μg/mL. Berdasarkan data spektrum IR untuk dua senyawa yang lain terdapat serapan –OH pada daerah 3200-3500 cm-1, serapan C=C aromatik di daerah 1600-1400 cm-1, sehingga diperkirakan kedua senyawa tersebut merupakan senyawa golongan fenolik.


2019 ◽  
Vol 3 (1) ◽  
pp. 72-76 ◽  
Author(s):  
Hüseyin Akşit ◽  
Mehmet Keçeci ◽  
İbrahim Demirtaş ◽  
Nusret Genç

Antioxidants ◽  
2018 ◽  
Vol 7 (12) ◽  
pp. 175 ◽  
Author(s):  
Mohammad Hossain ◽  
Justine Lebelle ◽  
Rares Birsan ◽  
Dilip Rai

The present study extensively fractionated crude red onion extract in order to identify the polyphenols which contributed most in the total antioxidant capacity of the onion extract using a flash chromatography system. The flash separations produced 70 fractions which were tested for their total phenol content, total flavonoid content, and antioxidant capacities as measured by 2,2-diphenyl-1-picrylhydrazyl (DPPH) and ferric reducing antioxidant power (FRAP) assays. Out of these 70 fractions, four fractions which were representatives of the four major peaks of the flash chromatograms, were further analysed for their constituent polyphenols using liquid chromatography tandem mass spectrometry (LC-MS/MS). The main contributor of onion antioxidant capacity is quercetin glycoside followed by quercetin aglycone although quercetin aglycone had higher antioxidant capacity than its glycosidic counterparts. High abundance of quercetin glycosides such as quercetin-3,4′-diglucoside and quercetin-4′-glucoside had compensated for their relatively low antioxidant capacities. A Higher degree of glycosylation resulted in lower antioxidant capacity. The fractionation approach also contributed in enrichment of the onion antioxidant polyphenols. A >9 folds enrichment was possible by discarding the early fractions (fractions 1–15) which contained the main bulk of the extracts, predominantly sugars.


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