Ultrasound-assisted adsorption/desorption of jujube peel flavonoids using macroporous resins

2021 ◽  
pp. 130800
Author(s):  
Dongbei Shen ◽  
Faiza Labreche ◽  
Caie Wu ◽  
Gongjian Fan ◽  
Tingting Li ◽  
...  
Keyword(s):  
Macroporous Resins ◽  
Ultrasound Assisted ◽  
Adsorption Desorption

Modeling of the Adsorption/Desorption Characteristics and Properties of Anthocyanins from Extruded Red Cabbage Juice by Macroporous Adsorbent Resin

2019 ◽  
Vol 15 (1-2) ◽  
Author(s):  
Pingjing Zhang ◽  
Liping Wang ◽  
Sheng Fang
Keyword(s):  
Adsorption Process ◽  
Fixed Bed ◽  
Order Kinetic ◽  
Adsorption And Desorption ◽  
Red Cabbage ◽  
Macroporous Resins ◽  
Freeze Dried ◽  
Order Kinetic Model ◽  
Color Density ◽  
Adsorption Desorption

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.

scholarly journals Simultaneous Purification and Separation of Syringoside and Oleuropein from Syringa oblata Lindl. Extract Using Macroporous Resin

2019 ◽  
Vol 2019 ◽  
pp. 1-10
Author(s):  
Guoliang Li ◽  
Hongxiu Yan ◽  
Xiangping Liu
Keyword(s):  
Optimal Parameters ◽  
Macroporous Resin ◽  
Adsorption Experiment ◽  
Adsorption Performance ◽  
Macroporous Resins ◽  
Initial Extract ◽  
Langmuir Isotherm Model ◽  
Potential Basis ◽  
Adsorption Desorption ◽  
Separation Parameters

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.

scholarly journals Determination of Suitable Macroporous Resins and Desorbents for Carnosol and Carnosic Acid from Deep Eutectic Solvent Sage (Salvia officinalis) Extract with Assessment of Antiradical and Antibacterial Activity

Antioxidants ◽  
2021 ◽  
Vol 10 (4) ◽  
pp. 556
Author(s):  
Martina Jakovljević Kovač ◽  
Valentina Pavić ◽  
Anastazija Huđ ◽  
Ines Cindrić ◽  
Maja Molnar
Keyword(s):  
Antibacterial Activity ◽  
Large Scale ◽  
Deep Eutectic Solvent ◽  
Deep Eutectic Solvents ◽  
Salvia Officinalis ◽  
Carnosic Acid ◽  
Whole Process ◽  
Optimal Separation ◽  
Macroporous Resins ◽  
Adsorption Desorption

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.

scholarly journals Nitrogen-modified nanoporous activated carbon from eucalyptus leaves for ultrasound-assisted removal of basic dyes using derivative spectrophotometric method

2018 ◽  
Vol 83 (5) ◽  
pp. 651-668 ◽  
Author(s):  
Aisan Khaligh ◽  
Zavvar Mousavi ◽  
Alimorad Rashidi ◽  
Hamid Shirkhanloo
Keyword(s):  
Activated Carbon ◽  
Spectrophotometric Method ◽  
High Performance ◽  
Chemical Activation ◽  
Micropore Volume ◽  
Bet Surface Area ◽  
Eucalyptus Leaves ◽  
Ultrasound Assisted ◽  
Adsorption Desorption ◽  
Nanoporous Activated Carbon

The nanoporous activated carbon (AC) was prepared from the eucalyptus leaves via chemical activation with KOH, then treated with nitric acid/ /urea (NOAC) and finally used as a new adsorbent for simultaneous ultrasound- assisted removal of basic red 46 (BR46) and basic yellow 13 (BY13) dyes from binary aqueous solutions. The NOAC nano-adsorbent was characterized with SEM, TEM, Raman, BET, FTIR, CHN, pHpzc and Boehm titration analysis. Both of the AC and NOAC samples had superior BET surface area of 2222 and 1572 m2 g-1 with average micropore volume of 0.81 and 0.50 cm3 g-1, respectively. First order derivative spectrophotometric method was used for analysis of BY13 in binary mixtures. Small amount of the adsorbent (30 mg) was capable to remove high percentage of dyes (>99 %) in a very short time (8 min). The adsorption of dyes follows the Langmuir isotherm and the pseudo- -second-order kinetics. The adsorption capacities of NOAC for single solutions of BR46 and BY13 were 1111 and 1250 mg g-1 as well as for binary solutions were 769 and 909 mg g-1, respectively. The adsorption thermodynamics were also explored. Exhausted NOAC was regenerated using HCl (2 M) and reused for five adsorption-desorption cycles with high performance.

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 ◽  
...  
Keyword(s):  
Anion Exchange ◽  
Macroporous Resins ◽  
Ms Analysis ◽  
Adsorption Desorption ◽  
Analysis And Study

Ultrasound assisted adsorption and desorption of blueberry anthocyanins using macroporous resins

2018 ◽  
Vol 48 ◽  
pp. 311-320 ◽  
Author(s):  
Yue Wu ◽  
Yongbin Han ◽  
Yang Tao ◽  
Siqi Fan ◽  
Dinh-Toi Chu ◽  
...  
Keyword(s):  
Adsorption And Desorption ◽  
Macroporous Resins ◽  
Ultrasound Assisted

scholarly journals Preparative Purification of Liriodendrin fromSargentodoxa cuneataby Macroporous Resin

2015 ◽  
Vol 2015 ◽  
pp. 1-9 ◽  
Author(s):  
Di-Hua Li ◽  
Yan Wang ◽  
Yuan-Shan Lv ◽  
Jun-Hong Liu ◽  
Lei Yang ◽  
...  
Keyword(s):  
Crystallization Process ◽  
Separation Process ◽  
Order Kinetic ◽  
Macroporous Resin ◽  
Macroporous Resins ◽  
Order Kinetic Model ◽  
Glass Column ◽  
Langmuir Isotherm Model ◽  
Pseudo Second Order ◽  
Adsorption Desorption

The preparative purification of liriodendrin fromSargentodoxa cuneatausing macroporous resin combined with crystallization process was evaluated. The properties of adsorption/desorption of liriodendrin on eight macroporous resins were investigated systematically. X-5 resin was selected as the most suitable medium for liriodendrin purification. The adsorption of liriodendrin on X-5 resin fitted well with the pseudo-second-order kinetic model and Langmuir isotherm model. Dynamic adsorption/desorption tests were performed using a glass column packed with X-5 resin to optimize the separation process of liriodendrin. After one treatment with X-5 resin, the content of liriodendrin in the product was increased 48.73-fold, from 0.85% to 41.42%, with a recovery yield of 88.9%. 97.48% liriodendrin was obtained by further crystallization and determined by HPLC. The purified product possessed strong antioxidant activity. In conclusion, purification of liriodendrin might expend its further pharmacological researches and further applications in pharmacy.

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