scholarly journals Adsorption and Desorption Properties of Total Flavonoids from Oil Palm (Elaeis guineensis Jacq.) Mature Leaf on Macroporous Adsorption Resins

Molecules ◽  
2020 ◽  
Vol 25 (4) ◽  
pp. 778 ◽  
Author(s):  
Che Zain ◽  
Lee ◽  
Teo ◽  
Shaari

Three different macroporous resins (XAD7HP, DAX-8, and XAD4) were evaluated for their adsorption and desorption properties in preparing flavonoid-enriched oil palm (Elaeis guineensis Jacq.) leaf extract. The influences of initial concentration, solution pH, contact time, and desorption solvent (ethanol) concentration were determined by static sorption/desorption methods. The optimal condition for adsorption of flavonoids was achieved when the solution of the extract was adjusted to pH 7, reaching equilibrium after 1440 min at 298 K. The adsorption process was well described by a pseudo-second-order kinetics model, while the adsorption isotherm data fitted well with a Freundlich model. The adsorption by each resin was via an exothermic and physical adsorption process. Based on the static experiment results, XAD7HP was found to be the most appropriate adsorbent, while 80% ethanol was the best solvent for desorbent. Further evaluation of its dynamic adsorption and desorption characteristics on a packed glass column showed that XAD7HP could enrich the OPL total flavonoid content by a 3.57-fold increment. Moreover, UHPLC–UV/PDA and UHPLC–MS/MS analysis revealed that apigenin and luteolin derivatives were selectively adsorbed by XAD7HP. Additionally, both the crude OPL extract and the flavonoid-enriched fraction have good DPPH and NO free radical scavenging activities. Multiple interactions between the flavonoids and cross-linked polymeric XAD7HP resin through van der Waals forces and hydrogen bonding described the sorption processes. Therefore, by utilizing this method, the flavonoid-enriched fraction from crude OPL extract could be used as a potential bioactive ingredient in nutraceutical and pharmaceutical applications at minimum cost with optimum efficiency.

Molecules ◽  
2020 ◽  
Vol 25 (23) ◽  
pp. 5636
Author(s):  
Mohamad Shazeli Che Zain ◽  
Soo Yee Lee ◽  
Nadiah Mad Nasir ◽  
Sharida Fakurazi ◽  
Khozirah Shaari

Oil palm (Elaeis guineensis Jacq.) leaflets (OPLs) are one of the major agricultural by-products generated from the massive cultivation of Malaysian palm oil. This biomass is also reported to be of potential value based on its health-improving effects. By employing proton nuclear magnetic resonance (1H-NMR) spectroscopy combined with multivariate data analysis (MVDA), the metabolite profile of OPLs was characterized and correlated with their antioxidant and wound healing properties. Principal component analysis (PCA) classified four varieties of extracts, prepared using solvents ranging from polar to medium polarity, into three distinct clusters. Cumulatively, six flavonoids, eight organic acids, four carbohydrates, and an amine were identified from the solvent extracts. The more polar extracts, such as, the ethyl acetate-methanol, absolute methanol, and methanol-water, were richer in phytochemicals. Based on partial least square (PLS) analysis, the constituents in these extracts, such as (+)-catechin, (−)-epicatechin, orientin, isoorientin, vitexin, and isovitexin, were strongly correlated with the measured antioxidant activities, comprising ferric reducing antioxidant power (FRAP), 2,2-diphenyl-1-picrylhydrazyl (DPPH), and nitric oxide (NO) free radical scavenging activities, as well as with cell proliferation and migration activities. This study has provided crucial evidence on the importance of these natural antioxidant compounds on the wound healing properties of OPL.


Plant Omics ◽  
2017 ◽  
Vol 10 (05) ◽  
pp. 247-251 ◽  
Author(s):  
Yurnaliza ◽  
◽  
Rizkita Rachmi Esyanti ◽  
Agus Susanto ◽  
I Nyoman Pugeg Aryantha ◽  
...  

Bragantia ◽  
2018 ◽  
Vol 77 (4) ◽  
pp. 546-556
Author(s):  
Christian Camilo Castañeda Cardona ◽  
Yacenia Morillo Coronado ◽  
Ana Cruz Morillo Conronado ◽  
Iván Ochoa

2001 ◽  
Vol 103 (8) ◽  
pp. 1302-1310 ◽  
Author(s):  
K. A. Rance ◽  
S. Mayes ◽  
Z. Price ◽  
P. L. Jack ◽  
R. H. V. Corley

2016 ◽  
Vol 15 (50) ◽  
pp. 2767-2775 ◽  
Author(s):  
Roseli Correa Thais ◽  
Yoshimitsu Motoike Sérgio ◽  
Paula de Souza Andrade Ana ◽  
Morra Coser Sara ◽  
Queiroz Vanessa ◽  
...  

2016 ◽  
Vol 15 (34) ◽  
pp. 1841-1845 ◽  
Author(s):  
Constant LIKENG-LI-NGUE Benoit ◽  
Martin BELL Joseph ◽  
Franck NGANDO-EBONGUE Georges ◽  
Ntsefong NTSOMBOH Godswill ◽  
Bille NGALLE Hermine

2018 ◽  
Vol 67 (1) ◽  
pp. 170-178 ◽  
Author(s):  
Gabriel Chaves ◽  
Gustavo Adolfo Ligarreto- Moreno ◽  
Daniel Gerardo Cayon-Salinas

El objetivo de este estudio fue realizar un análisis comparativo de las características físicas y químicas de racimos de genotipos de Elaeis oleifera y de sus híbridos interespecíficos OxG con Elaeis guineensis, determinando los componentes y el potencial del aceite del racimo, y la calidad de los aceites, analizando el contenido de ácidos grasos, vitamina E y carotenos. En el estudio se utilizaron racimos provenientes de inflorescencias sin polinización asistida con la presencia perimetral de E. guineensis. Se utilizó un diseño experimental completamente al azar con tres unidades experimentales, cada una conformada por tres racimos. Los mayores cuajados del fruto se encontraron en el genotipo de E. oleifera Sinú (76,53 %) y el híbrido OxG II (72,64 %). Los potenciales de extracción de aceite fueron superiores en los materiales híbridos OxG destacándose el II (20,82 %). Las palmas E. oleifera presentaron mejores perfiles de ácidos grasos, destacándose los materiales del genotipo Sinú (79,1 % de ácidos grasos insaturados) y los del híbrido II (70,2 %). Para el contenido de vitamina E se confirmó la alta calidad del aceite de los materiales de E. oleifera, sobresaliendo el genotipo Coarí (1.006,7 ppm) y el híbrido II (1.549,6 ppm); el material del genotipo Sinú registró el mayor contenido de carotenos totales (1.524,7 ppm).


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