HPLC–MS/MS Analysis and Study on the Adsorption/Desorption Characteristics of Ginsenosides on Anion-Exchange Macroporous Resins

2021 ◽  
Vol 84 (5) ◽  
pp. 441-453
Author(s):  
Siming Wang ◽  
Rui Zou ◽  
Fajie Wu ◽  
Shuai Bian ◽  
Yu Xin ◽  
...  
2019 ◽  
Vol 15 (1-2) ◽  
Author(s):  
Pingjing Zhang ◽  
Liping Wang ◽  
Sheng Fang

AbstractThe adsorption/desorption characteristics, modeling and properties of anthocyanins from extruded red cabbage juice by macroporous resins were investigated. The static adsorption and desorption capacities of red cabbage anthocyanins on five macroporous resins were measured and compared. The X-5 resin showed the best capacities and was selected for the adsorption kinetics, isotherms and elution studies. The pseudo-second-order kinetic model and Langmuir isotherm model were used to describe the adsorption process and mechanism. Dynamic adsorption and desorption tests were performed on a fixed-bed column, and the loading and eluent conditions were optimized. The purity of anthocyanins in freeze-dried purified powder by the resin adsorption process is 21.3 ± 0.9 wt % and shows better stability in the air than the unpurified one. Finally, the antioxidant activity and color properties including color density, color intensity, color tonality and degradation index of the purified powders were measured.


2017 ◽  
Vol 217 ◽  
pp. 461-468 ◽  
Author(s):  
Yingying Shi ◽  
Tingting Liu ◽  
Yun Han ◽  
Xiufang Zhu ◽  
Xiaojuan Zhao ◽  
...  

2016 ◽  
Vol 846 ◽  
pp. 440-447
Author(s):  
Sheikh Ahmad Izaddin Sheikh Mohd Ghazali ◽  
Siti Halimah Sarijo ◽  
Mohd Zobir Hussein

The intercalation of herbicide, 3,4-dicholorophenoxyacetic acid (3,4D), into zinc-aluminium-layered double hydroxide (LDH) for the formation of a new nanocomposite ZADX, was accomplished via anion exchange method. Due to the intercalation of 3,4D with LDH interlayer domain, basal spacing expanded from 8.9Å in the ZAL to 17.7-19.0 Å in the ZADX. The percentage loading of 3,4D in the ZADX is 51.4 % (w/w). The FTIR spectra of the nanocomposite shows resemblance peaks of the 3,4D and Zn-Al-layered double hydroxide indicating the inclusion of 3,4D into the layered double hydroxide. Surface area of the resulting nanocomposite increased from 1.3 to 7.14 m2g-1 with the nitrogen adsorption-desorption of type IV.


2019 ◽  
Vol 2019 ◽  
pp. 1-10
Author(s):  
Guoliang Li ◽  
Hongxiu Yan ◽  
Xiangping Liu

This study developed an efficient method to simultaneously separate and purify syringoside and oleuropein from Syringa oblata Lindl. extract using macroporous resins. The adsorption and desorption property of 11 resins were systematically evaluated. Based on the adsorption performance, HPD-100B resin was selected for the separation of syringoside and oleuropein. The HPD-100B resin fitted well to the Langmuir isotherm model (R2 > 0.97), as ascertained by the results of the static adsorption experiment. Kinetic and dynamic adsorption/desorption experiments were conducted using the HPD-100B resin to optimize the separation parameters of syringoside and oleuropein. On the optimal parameters, syringoside and oleuropein were obtained from the 20% and 40% ethanol eluates, respectively. In addition, the adsorption effluent (15–60 BV) contained a large amount of syringoside with less impurities; therefore, this part was also collected for further syringoside separation and enrichment of syringoside. By only one cycle treatment, the syringoside and oleuropein contents in the final products increased by 7.1-fold and 8.2-fold, respectively, compared to the initial extract. The method developed in this study provides a potential basis for the industrial-scale enrichment and separation of syringoside and oleuropein from S. oblata extract.


Antioxidants ◽  
2021 ◽  
Vol 10 (4) ◽  
pp. 556
Author(s):  
Martina Jakovljević Kovač ◽  
Valentina Pavić ◽  
Anastazija Huđ ◽  
Ines Cindrić ◽  
Maja Molnar

In this study, for the first time, the adsorption/desorption characteristics of carnosic acid and carnosol from deep eutectic solvent extract of Salvia officinalis on five macroporous resins (HP20, XAD7HP, XAD16N, HP21, HP2MG) were evaluated. The high adsorption and medium desorption capacities of carnosic acid and carnosol as well as antibacterial and antiradical activity from the extract obtained with choline chloride:lactic acid (1:2) on XAD7HP resin indicated that resin was appropriate. To get the optimal separation process, the influence of factors such as adsorption/desorption time and volume of desorbent was further investigated. The results showed that the extract with high antiradical and antibacterial activity was obtained via adsorption and desorption on XAD7HP resin. The extraction efficiencies of the deep eutectic solvents (DESs) recycled once, twice, and thrice were 97.64% (±0.03%), 93.10% (±0.66%), and 88.94% (±1.15%), respectively, for carnosic acid, and 96.63% (±0.04%), 94.38% (±0.27%), and 91.19% (±0.36%), respectively, for carnosol, relative to the initial solvent efficiency. Based on that, this method is a promising basis for the large-scale preparation of extracts from Salvia officinalis with further application in the pharmaceutical or food industry, especially for maintaining the “green” character of the whole process to obtain the appropriate extract.


The Analyst ◽  
2006 ◽  
Vol 131 (6) ◽  
pp. 724 ◽  
Author(s):  
Martin J. Nash ◽  
John E. Maskall ◽  
Steve J. Hill

2013 ◽  
Vol 22 (1) ◽  
pp. 55-63
Author(s):  
Jong Hyuk Jeon ◽  
Young Hun Kim ◽  
In Sung Hwang ◽  
Jin Young Lee ◽  
Joon Soo Kim ◽  
...  

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