1
|
Liao Y, Chen F, Tang H, Dessie W, Qin Z. Combination of a Deep Eutectic Solvent and Macroporous Resin for Green Recovery of Iridoids, Chlorogenic Acid, and Flavonoids from Eucommia ulmoides Leaves. Molecules 2024; 29:737. [PMID: 38338480 PMCID: PMC10856201 DOI: 10.3390/molecules29030737] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2024] [Revised: 02/01/2024] [Accepted: 02/02/2024] [Indexed: 02/12/2024] Open
Abstract
To increase the effectiveness of using typical biomass waste as a resource, iridoids, chlorogenic acid, and flavonoids from the waste biomass of Eucommia ulmoides leaves (EULs) were extracted by deep eutectic solvents (DESs) in conjunction with macroporous resin. To optimize the extract conditions, the experiment of response surface was employed with the single-factor of DES composition molar ratio, liquid-solid ratio, water percentage, extraction temperature, and extraction time. The findings demonstrated that the theoretical simulated extraction yield of chlorogenic acid (CGA), geniposidic acid (GPA), aucubin (AU), geniposide (GP), rutin (RU), and isoquercetin (IQU) were 42.8, 137.2, 156.7, 5.4, 13.5, and 12.8 mg/g, respectively, under optimal conditions (hydrogen bond donor-hydrogen bond acceptor molar ratio of 1.96, liquid-solid ratio of 28.89 mL/g, water percentage of 38.44%, temperature of 317.36 K, and time of 55.59 min). Then, 12 resins were evaluated for their adsorption and desorption capabilities for the target components, and the HPD950 resin was found to operate at its optimum. Additionally, the HPD950 resin demonstrated significant sustainability and considerable potential in the recyclability test. Finally, the hypoglycemic in vitro, hypolipidemic in vitro, immunomodulatory, and anti-inflammatory effects of EUL extract were evaluated, and the correlation analysis of six active components with biological activity and physicochemical characteristics of DESs by heatmap were discussed. The findings of this study can offer a theoretical foundation for the extraction of valuable components by DESs from waste biomass, as well as specific utility benefits for the creation and development of natural products.
Collapse
Affiliation(s)
- Yunhui Liao
- College of Chemistry and Bioengineering, Hunan University of Science and Engineering, Yongzhou 425199, China; (Y.L.); (F.C.); (H.T.); (W.D.)
- Hunan Engineering Technology Research Center for Comprehensive Development and Utilization of Biomass Resources, College of Chemistry and Bioengineering, Hunan University of Science and Engineering, Yongzhou 425199, China
| | - Feng Chen
- College of Chemistry and Bioengineering, Hunan University of Science and Engineering, Yongzhou 425199, China; (Y.L.); (F.C.); (H.T.); (W.D.)
| | - Haishan Tang
- College of Chemistry and Bioengineering, Hunan University of Science and Engineering, Yongzhou 425199, China; (Y.L.); (F.C.); (H.T.); (W.D.)
- Hunan Provincial Key Laboratory for Comprehensive Utilization of Dominant Plant Resources in Southern Hunan, Yongzhou 425199, China
| | - Wubliker Dessie
- College of Chemistry and Bioengineering, Hunan University of Science and Engineering, Yongzhou 425199, China; (Y.L.); (F.C.); (H.T.); (W.D.)
- Hunan Engineering Technology Research Center for Comprehensive Development and Utilization of Biomass Resources, College of Chemistry and Bioengineering, Hunan University of Science and Engineering, Yongzhou 425199, China
| | - Zuodong Qin
- College of Chemistry and Bioengineering, Hunan University of Science and Engineering, Yongzhou 425199, China; (Y.L.); (F.C.); (H.T.); (W.D.)
- Hunan Engineering Technology Research Center for Comprehensive Development and Utilization of Biomass Resources, College of Chemistry and Bioengineering, Hunan University of Science and Engineering, Yongzhou 425199, China
| |
Collapse
|
2
|
Meng L, Chen Y, Zheng Z, Wang L, Xu Y, Li X, Xiao Z, Tang Z, Wang Z. Ultrasound-Assisted Extraction of Paeonol from Moutan Cortex: Purification and Component Identification of Extract. Molecules 2024; 29:622. [PMID: 38338367 PMCID: PMC10856641 DOI: 10.3390/molecules29030622] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2023] [Revised: 12/29/2023] [Accepted: 01/23/2024] [Indexed: 02/12/2024] Open
Abstract
Moutan Cortex (MC) is a traditional Chinese medicine that contains abundant medicinal components, such as paeonol, paeoniflorin, etc. Paeonol is the main active component of MC. In this study, paeonol was extracted from MC through an ultrasound-assisted extraction process, which is based on single-factor experiments and response surface methodology (RSM). Subsequently, eight macroporous resins of different properties were used to purify paeonol from MC. The main components of the purified extract were identified by ultra-performance liquid chromatography-quadrupole-time of flight-mass spectrometry (UPLC-Q-TOF-MS/MS). The results indicate the optimal parameters are as follows: liquid-to-material ratio 21:1 mL/g, ethanol concentration 62%, ultrasonic time 31 min, ultrasonic temperature 36 °C, ultrasonic power 420 W. Under these extraction conditions, the actual yield of paeonol was 14.01 mg/g. Among the eight tested macroporous resins, HPD-300 macroporous resin was verified to possess the highest adsorption and desorption qualities. The content of paeonol increased from 6.93% (crude extract) to 41.40% (purified extract) after the HPD-300 macroporous resin treatment. A total of five major phenolic compounds and two principal monoterpene glycosides were characterized by comparison with reference compounds. These findings will make a contribution to the isolation and utilization of the active components from MC.
Collapse
Affiliation(s)
- Ling Meng
- Key Laboratory of Food Processing Technology and Quality Control in Shandong Province, College of Food Science and Engineering, Shandong Agricultural University, Taian 271018, China
| | - Yan Chen
- Key Laboratory of Food Processing Technology and Quality Control in Shandong Province, College of Food Science and Engineering, Shandong Agricultural University, Taian 271018, China
| | - Zhenjia Zheng
- Key Laboratory of Food Processing Technology and Quality Control in Shandong Province, College of Food Science and Engineering, Shandong Agricultural University, Taian 271018, China
| | - Lei Wang
- Key Laboratory of Food Processing Technology and Quality Control in Shandong Province, College of Food Science and Engineering, Shandong Agricultural University, Taian 271018, China
| | - Yahui Xu
- Key Laboratory of Food Processing Technology and Quality Control in Shandong Province, College of Food Science and Engineering, Shandong Agricultural University, Taian 271018, China
| | - Xiujun Li
- Key Laboratory of Food Processing Technology and Quality Control in Shandong Province, College of Food Science and Engineering, Shandong Agricultural University, Taian 271018, China
| | - Zhijian Xiao
- Shandong Wake Fresh Food Technology Co., Ltd., Taian 271400, China
| | - Zheng Tang
- Shandong Wake Fresh Food Technology Co., Ltd., Taian 271400, China
| | - Zhaosheng Wang
- Key Laboratory of Food Processing Technology and Quality Control in Shandong Province, College of Food Science and Engineering, Shandong Agricultural University, Taian 271018, China
| |
Collapse
|
3
|
Zhang Y, Ma G, Wang S, Nian B, Hu Y. Study on the synthesis of pine sterol esters in solvent-free systems catalyzed by Candida rugosa lipase immobilized on hydrophobic macroporous resin. J Sci Food Agric 2023; 103:7849-7861. [PMID: 37467367 DOI: 10.1002/jsfa.12869] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Revised: 07/09/2023] [Accepted: 07/19/2023] [Indexed: 07/21/2023]
Abstract
BACKGROUND Pine sterol ester is a type of novel food source nutrient with great advantages in lowering blood cholesterol levels, inhibiting tumors, preventing prostate enlargement, and regulating immunity. Macroporous resins with large specific surface area, stable structures, and various functional groups (epoxy, amino, and octadecyl groups) have been selected for immobilization of Candida rugosa lipase (CRL) to improve its stability and efficiency in the synthesis of pine sterol esters. A solvent-free strategy using oleic acid (substrate) as an esterification reaction medium is an important alternative for avoiding the use of organic solvents. RESULTS The immobilization conditions of CRL immobilized on several types of commercial macroporous resins were optimized. Fortunately, by adsorption (hydrophobic interaction), a high immobilization efficiency of CRL was obtained using macroporous resins with hydrophobic octadecyl groups with an immobilization efficiency of 86.5%, enzyme loading of 138.5 mg g-1 and enzyme activity of 34.7 U g-1 . The results showed that a 95.1% yield could be obtained with a molar ratio of oleic acid to pine sterol of 5:1, an enzyme amount of 6.0 U g-1 (relative to pine sterol mass) at 50 °C for 48 h. CONCLUSION The hydrophobic macroporous resin (ECR8806M) with a large specific surface area and abundant functional groups was used to achieve efficient immobilization of CRL. CRL@ECR8806M is an efficient catalyst for the synthesis of phytosterol esters and has the potential for further large-scale applications. Therefore, this simple, green, and low-cost strategy for lipase immobilization provides new possibilities for the high-efficiency production of pine sterol esters and other food source nutrients. © 2023 Society of Chemical Industry.
Collapse
Affiliation(s)
- Yifei Zhang
- State Key Laboratory of Materials-Oriented Chemical Engineering, School of Pharmaceutical Sciences, Nanjing Tech University, Nanjing, 210009, China
| | - Guangzheng Ma
- State Key Laboratory of Materials-Oriented Chemical Engineering, School of Pharmaceutical Sciences, Nanjing Tech University, Nanjing, 210009, China
| | - Shushu Wang
- State Key Laboratory of Materials-Oriented Chemical Engineering, School of Pharmaceutical Sciences, Nanjing Tech University, Nanjing, 210009, China
| | - Binbin Nian
- State Key Laboratory of Materials-Oriented Chemical Engineering, School of Pharmaceutical Sciences, Nanjing Tech University, Nanjing, 210009, China
| | - Yi Hu
- State Key Laboratory of Materials-Oriented Chemical Engineering, School of Pharmaceutical Sciences, Nanjing Tech University, Nanjing, 210009, China
| |
Collapse
|
4
|
Zhu C, Fan Y, Wu H. The Selective Separation of Carnosic Acid and Rosmarinic Acid by Solid-Phase Extraction and Liquid-Liquid Extraction: A Comparative Study. Molecules 2023; 28:5493. [PMID: 37513364 PMCID: PMC10386460 DOI: 10.3390/molecules28145493] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2023] [Revised: 07/16/2023] [Accepted: 07/17/2023] [Indexed: 07/30/2023] Open
Abstract
Rosmarinus officinalis leaves (ROLs) are widely used in the food and cosmetics industries due to their high antioxidant activity and fascinating flavor properties. Carnosic acid (CA) and rosmarinic acid (RA) are regarded as the characteristic antioxidant components of ROLs, and the selective separation of CA and RA remains a significant challenge. In this work, the feasibility of achieving the selective separation of CA and RA from ROLs by solid-phase extraction (SPE) and liquid-liquid extraction (LLE) was studied and compared. The experiments suggested that SPE with CAD-40 macroporous resin as the adsorbent was a good choice for selectively isolating CA from the extracts of ROLs and could produce raw CA with purity levels as high as 76.5%. The LLE with ethyl acetate (EA) as the extraction solvent was more suitable for extracting RA from the diluted extracts of ROLs and could produce raw RA with a purity level of 56.3%. Compared with the reported column chromatography and LLE techniques, the developed SPE-LLE method not only exhibited higher extraction efficiency for CA and RA, but can also produce CA and RA with higher purity.
Collapse
Affiliation(s)
- Chunyan Zhu
- College of Chemistry and Chemical Engineering, Henan Polytechnic University, Jiaozuo 454003, China
| | - Yunchang Fan
- College of Chemistry and Chemical Engineering, Henan Polytechnic University, Jiaozuo 454003, China
| | - Hongwei Wu
- Department of Chemistry, Xinxiang Medical University, Xinxiang 453003, China
| |
Collapse
|
5
|
Chang G, Liu H, Cui J, Wang Z, Wang W, Hou J. Enrichment and qualitative analysis of flavonoid glycosides from the aerial parts of Glycyrrhiza uralensis Fisch. Nat Prod Res 2023:1-7. [PMID: 37431638 DOI: 10.1080/14786419.2023.2226296] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/12/2023]
Abstract
Our previous study found that the aerial parts of Chinese liquorice (Glycyrrhiza uralensis Fisch.) had pharmacological effects against chronic non-bacterial prostatitis in rats, however the pharmacologically active compounds remain unclear. Here, a method based on UPLC-Q-Exactive Orbitrap-MS was established to qualitatively analyse the flavonoid glycosides rich fraction extracted from the aerial part of G. uralensis Fisch., after pretreatment with n-butanol and enrichment using AB-8 macroporous resin. Using both positive and negative ion modes, 52 compounds were identified or tentatively characterised by comparison with standards and the literature: 40 flavonoids, 8 organic acids, 2 chromones, 1 coumarin, and 1 phenylethanoid glycoside. This study provides not only an approach to enrich flavonoid glycosides but also a methodology for quickly determining the relevant bioactive components in the aerial parts of G. uralensis Fisch.
Collapse
Affiliation(s)
- Guanhua Chang
- Beijing Wehand-Bio Pharmaceutical Company Limited, Beijing, China
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, China
| | - Haifan Liu
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, China
| | - Jie Cui
- Institute of Medicinal Plant Development, Peking Union Medical College & Chinese Academy of Medical Sciences, Beijing, China
| | - Zilong Wang
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing, China
| | - Wenquan Wang
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, China
- Institute of Medicinal Plant Development, Peking Union Medical College & Chinese Academy of Medical Sciences, Beijing, China
| | - Junling Hou
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, China
| |
Collapse
|
6
|
Han N, Chen X, Wang H, Wang N, Nian M, Wang D. Efficient preparation of hyperoside and quercitrin from Zanthoxylum bungeanum Maxim leaves using an integrated surfactant-based aqueous two-phase system, back-extraction and adsorption separation. Nat Prod Res 2023:1-13. [PMID: 37287217 DOI: 10.1080/14786419.2023.2219822] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Zanthoxylum bungeanum leaves (ZBL) are of great medicinal value for being rich in hyperoside and quercitrin. In this study, a novel, efficient and economical continuous process was established. First, aqueous two-phase system (ATPS) composed of Triton X-100/(NH4)2SO4 was employed to enrich hyperoside and quercitrin from ZBL extracts and the recoveries reached 98.53% and 99.12%. Then back-extraction with dichloromethane-water system was adopted to separate hyperoside and quercitrin from Triton X-100 micelles which were recycled and the recoveries reached 86.58% and 85.19%. Finally, S-8 macroporous resin was used for removing the salt introduced in ATPS and the final recoveries reached 82.38% and 81.81%, much higher than the total flavonoids recovery as 69.08%. Furthermore, scale-up experiment certified that the continuous process was feasible for industrial production. Efficiently and economically, this method achieved a great breakthrough in purity and provided a novel reference for further purification and phase-forming component recycle.
Collapse
Affiliation(s)
- Nuan Han
- College of Forestry, Northwest A & F University, Yangling, China
| | - Xiaoqi Chen
- College of Forestry, Northwest A & F University, Yangling, China
| | - Hong Wang
- College of Forestry, Northwest A & F University, Yangling, China
| | - Nana Wang
- College of Forestry, Northwest A & F University, Yangling, China
| | - Miaoxiang Nian
- College of Forestry, Northwest A & F University, Yangling, China
| | - Dongmei Wang
- College of Forestry, Northwest A & F University, Yangling, China
| |
Collapse
|
7
|
Zhou Y, Chen M, Huo X, Xu Q, Wu L, Wang L. Separation of Flavonoids and Purification of Chlorogenic Acid from Bamboo Leaves Extraction Residues by Combination of Macroporous Resin and High-Speed Counter-Current Chromatography. Molecules 2023; 28:molecules28114443. [PMID: 37298918 DOI: 10.3390/molecules28114443] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Revised: 05/16/2023] [Accepted: 05/19/2023] [Indexed: 06/12/2023] Open
Abstract
Flavonoids are major active small-molecule compounds in bamboo leaves, which can be easily obtained from the bamboo leaves extraction residues (BLER) after the polysaccharides extraction. Six macroporous resins with different properties were screened to prepare and enrich isoorientin (IOR), orientin (OR), vitexin (VI), and isovitexin (IVI) from BLER, and the XAD-7HP resin with the best adsorption and desorption performance was selected for further evaluation. Based on the static adsorption experiments, the experimental results showed that the adsorption isotherm fitted well with the Langmuir isotherm model, and the adsorption process was better explained by the pseudo-second-order kinetic model. After the dynamic trial of resin column chromatography, 20 bed volume (BV) of upload sample and 60% ethanol as eluting solvent was used in a lab scale-up separation, and the results demonstrated that the content of four flavonoids could be increased by 4.5-fold, with recoveries between 72.86 and 88.21%. In addition, chlorogenic acid (CA) with purity of 95.1% was obtained in water-eluted parts during dynamic resin separation and further purified by high-speed countercurrent chromatography (HSCCC). In conclusion, this rapid and efficient method can provide a reference to utilize BLER to produce high-value-added food and pharmaceutical products.
Collapse
Affiliation(s)
- Yifeng Zhou
- School of Biological and Chemical Engineering, Zhejiang University of Science and Technology, Hangzhou 310023, China
| | - Meixu Chen
- School of Biological and Chemical Engineering, Zhejiang University of Science and Technology, Hangzhou 310023, China
| | - Xinyi Huo
- School of Biological and Chemical Engineering, Zhejiang University of Science and Technology, Hangzhou 310023, China
| | - Qilin Xu
- School of Biological and Chemical Engineering, Zhejiang University of Science and Technology, Hangzhou 310023, China
| | - Linlin Wu
- School of Biological and Chemical Engineering, Zhejiang University of Science and Technology, Hangzhou 310023, China
| | - Liling Wang
- Zhejiang Academy of Forestry, Hangzhou 310023, China
| |
Collapse
|
8
|
Li K, Li Z, Men L, Li J, Gong X. Deep Eutectic Solvent-Based Ultrasound-Assisted Strategy for Simultaneous Extraction of Five Macamides from Lepidium meyenii Walp and In Vitro Bioactivities. Foods 2023; 12. [PMID: 36673339 DOI: 10.3390/foods12020248] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Revised: 12/21/2022] [Accepted: 01/03/2023] [Indexed: 01/06/2023] Open
Abstract
This study aimed to develop an integrated approach of deep eutectic solvent-based ultrasound-assisted extraction (DES-UAE) to simultaneously extract five major bioactive macamides from the roots of Lepidium meyenii Walp. Ten different DESs containing choline chloride and selected hydrogen-bond donors were prepared and evaluated based on the extracted macamide content determination using high-performance liquid chromatography (HPLC). Choline chloride/1,6-hexanediol in a 1:2 molar ratio with 20% water exhibited the most promising extraction efficiencies under the optimized parameters verified using single-factor optimization as well as Box-Behnken design. Using the optimized DES-UAE method, the extraction efficiencies of the five macamides were up to 40.3% higher compared to those using the most favorable organic solvent petroleum ether and were also superior to those of the other extraction methods, such as heating and combination of heating and stirring. Furthermore, using the macroporous resin HPD-100, the recoveries of the five target macamides from the DES extraction reached 85.62-92.25%. The 20 μg/mL group of the five macamide extracts showed superior neuroprotective activity against PC12 cell injury than that of the positive drug nimodipine. The macamide extracts also showed higher NO inhibition in LPS-stimulated RAW264.7 cells. Thus, the developed approach was a green and potential alternative that can be used to extract bioactive macamide constituents from L. meyenii in the pharmaceutical and food industries.
Collapse
|
9
|
Zhang M, Yang B, Ye M, Chen J, Liu Y, Wang C. An Effective Chromatography Process for Simultaneous Purification and Separation of Total Lignans and Flavonoids from Valeriana amurensis. Molecules 2022; 27. [PMID: 36500691 DOI: 10.3390/molecules27238598] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/30/2022] [Revised: 11/25/2022] [Accepted: 12/05/2022] [Indexed: 12/12/2022]
Abstract
An effective chromatography process was developed and validated for simultaneous purification and separation of total lignans and flavonoids from Valeriana amurensis. The total lignans and flavonoids in Valeriana amurensis extract were prepurified with macroporous resin column chromatography, and the conditions were optimized as follows: 40 mg/mL Valeriana amurensis extract (2.0 g) solution was loaded onto an AB-8 resin column with a diameter-to-height ratio of 1:7, followed by adsorption for 6 h; then, the column was eluted successively with 5 BV water and 10% and 50% ethanol at a flow rate 2 BV/h. The obtained 50% ethanol fraction was further repurified and separated by polyamide resin column chromatography to obtain the total lignans and flavonoids, respectively. The chromatography conditions were optimized as follows: a 50% ethanol fraction (1.0 g) was mixed with 1.0 g polyamide resin and loaded onto a polyamide resin (60-100 mesh) column with a diameter-to-height ratio of 1:3; then, the column was eluted successively with 6 BV water and 40% and 80% ethanol at a flow rate of 4 BV/h. The total lignans and flavonoids were obtained from water and 80% ethanol fraction, respectively. The content and recovery of standard compounds in total lignans and flavonoids were analyzed with HPLC-PDA, and the feasibility of the process was confirmed.
Collapse
|
10
|
Li D, Xu XY, Yang Y, Wu N, Ma ZQ, Zuo F, Zhang N. Separation and purification of antioxidant peptides from purple speckled kidney bean by macroporous adsorption resin and analysis of amino acid composition. Front Nutr 2022; 9:1001456. [PMID: 36438729 PMCID: PMC9693755 DOI: 10.3389/fnut.2022.1001456] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2022] [Accepted: 09/06/2022] [Indexed: 08/02/2023] Open
Abstract
The protein hydrolysate of purple speckled kidney bean (PSKB) was used as the raw material in this study, and the antioxidant peptide of the PSKB protein hydrolysate was purified using macroporous resin. The XAD-7HP macroporous resin was selected as the best purification material, and the static adsorption-desorption of the purified PSKB antioxidant peptide was optimized. The optimum static adsorption and desorption conditions were as follows: the adsorption capacity reached 11.93 ± 0.11 mg/ml at pH 7 for 24 h, and the desorption capacity was 5.24 ± 0.04 mg/ml with 60% ethanol for 30 min. Under this condition, the amount of antioxidant peptide obtained by adsorption-desorption was the highest. The optimum process conditions were as follows: the appropriate flow rate was 1 ml/min, and the optimal injection volume was 40 ml. The adsorption amount at this time can reach 12.19 ± 0.15 mg/ml. The components with an elution time of 10-30 min were separated using the reversed-phase high-performance liquid chromatography (RP-HPLC) technique to obtain three main components, namely, RP1, RP2, and RP3. The DPPH free radical scavenging ability reached 56.26 ± 0.56, 66.42 ± 0.56, and 78.57 ± 0.56%, respectively, which were 36.65, 46.34 ± 0.56, and 54.39 ± 0.56% higher than those before purification. The amino acid sequences of the three components were identified as Phe-Leu-Val-Asp-Arg-Ile, Phe-Leu-Val-Ala-Pro-Asp-Asp, and Lys-Asp-Arg-Val-Ile-Ser-Glu-Leu.
Collapse
Affiliation(s)
- Dan Li
- School of Food Science, Heilongjiang Bayi Agriculture University, Daqing, China
- National Cereal Engineering Technology Research Center, Heilongjiang Bayi Agriculture University, Daqing, China
| | - Xin-yu Xu
- National Cereal Engineering Technology Research Center, Heilongjiang Bayi Agriculture University, Daqing, China
- School of Food Engineering, Harbin University of Commerce, Harbin, China
| | - Yang Yang
- School of Food Engineering, Harbin University of Commerce, Harbin, China
| | - Na Wu
- School of Food Engineering, Harbin University of Commerce, Harbin, China
| | - Zhan-qian Ma
- School of Food Engineering, Harbin University of Commerce, Harbin, China
| | - Feng Zuo
- School of Food Science, Heilongjiang Bayi Agriculture University, Daqing, China
- National Cereal Engineering Technology Research Center, Heilongjiang Bayi Agriculture University, Daqing, China
| | - Na Zhang
- School of Food Engineering, Harbin University of Commerce, Harbin, China
| |
Collapse
|
11
|
Li YY, Feng JL, Li Z, Zang XY, Yang XW. Separation and Enrichment of Alkaloids from Coptidis Rhizoma and Euodiae Fructus by Macroporous Resin and Evaluation of the Effect on Bile Reflux Gastritis Rats. Molecules 2022; 27:724. [PMID: 35163988 DOI: 10.3390/molecules27030724] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Revised: 01/14/2022] [Accepted: 01/15/2022] [Indexed: 11/17/2022]
Abstract
The Zuojin Pill consists of Coptidis Rhizoma (CR) and Euodiae Fructus (EF). It has been a classic prescription for the treatment of gastrointestinal diseases in China since ancient times. Alkaloids are considered to be its main pharmacologically active substances. The authors of the present study investigated the feasibility of preparing high purity total alkaloids (TAs) from CR and EF extracts separately and evaluated the effect for the treatment of bile reflux gastritis (BRG). Coptis chinensis Franch. and Evodia rutaecarpa (Juss.) Benth. were used in the study. An optimized method for the enrichment and purification of TAs with macroporous resin was established. Furthermore, qualitative analysis by using ultra-high performance liquid chromatography coupled with electrospray ionization and quadrupole-time of flight mass spectrometry (UHPLC–ESI–QTOF-MS) was explored to identify the components of purified TAs. Thirty-one compounds, thirty alkaloids and one phenolic compound, were identified or tentatively assigned by comparison with reference standards or literature data. A method of ultra-high performance liquid chromatography coupled with diode array detector (UHPLC–DAD) for quantitative analysis was also developed. The contents of nine alkaloids were determined. Moreover, a rat model of BRG was used to investigate the therapeutic effect of the combination of purified TAs from CR and EF. Gastric pathologic examination suggested that the alkaloids’ combination could markedly attenuate the pathological changes of gastric mucosa.
Collapse
|
12
|
Le TT, Framboisier X, Aymes A, Ropars A, Frippiat JP, Kapel R. Identification and Capture of Phenolic Compounds from a Rapeseed Meal Protein Isolate Production Process By-Product by Macroporous Resin and Valorization Their Antioxidant Properties. Molecules 2021; 26:molecules26195853. [PMID: 34641397 PMCID: PMC8512146 DOI: 10.3390/molecules26195853] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Revised: 09/18/2021] [Accepted: 09/23/2021] [Indexed: 11/24/2022] Open
Abstract
In this study, phenolic compounds from an aqueous protein by-product from rapeseed meal (RSM) were identified by HPLC-DAD and HPLC-ESI-MS, including sinapine, sinapic acid, sinapoyl glucose, and 1,2-di-sinapoyl gentibiose. The main phenolic compound in this by-product was sinapine. We also performed acid hydrolysis to convert sinapine, and sinapic acid derivatives present in the permeate, to sinapic acid. The adsorption of phenolic compounds was investigated using five macroporous resins, including XAD4, XAD7, XAD16, XAD1180, and HP20. Among them, XAD16 showed the highest total phenolic contents adsorption capacities. The adsorption behavior of phenolic compounds was described by pseudo-second-order and Langmuir models. Moreover, thermodynamics tests demonstrated that the adsorption process of phenolic compounds was exothermic and spontaneous. The highest desorption ratio was obtained with 30% (v/v) and 70% (v/v) ethanol for sinapine and sinapic acid, respectively, with a desorption ratio of 63.19 ± 0.03% and 94.68 ± 0.013%. DPPH and ABTS tests revealed that the antioxidant activity of the hydrolyzed fraction was higher than the non-hydrolyzed fraction and higher than the one of vitamin C. Antioxidant tests demonstrated that these phenolic compounds could be used as natural antioxidants, which can be applied in the food industry.
Collapse
Affiliation(s)
- Tuong Thi Le
- Laboratoire Réactions et Génie des Procédés, Université de Lorraine, Unité Mixte de Recherche CNRS/Ministère (UMR) 7274, LRGP, F-54500 Vandœuvre-lès-Nancy, France; (T.T.L.); (X.F.); (A.A.)
- Stress, Immunity, Pathogens Laboratory, SIMPA UR7300, Université de Lorraine, F-54000 Nancy, France;
| | - Xavier Framboisier
- Laboratoire Réactions et Génie des Procédés, Université de Lorraine, Unité Mixte de Recherche CNRS/Ministère (UMR) 7274, LRGP, F-54500 Vandœuvre-lès-Nancy, France; (T.T.L.); (X.F.); (A.A.)
| | - Arnaud Aymes
- Laboratoire Réactions et Génie des Procédés, Université de Lorraine, Unité Mixte de Recherche CNRS/Ministère (UMR) 7274, LRGP, F-54500 Vandœuvre-lès-Nancy, France; (T.T.L.); (X.F.); (A.A.)
| | - Armelle Ropars
- Stress, Immunity, Pathogens Laboratory, SIMPA UR7300, Université de Lorraine, F-54000 Nancy, France;
| | - Jean-Pol Frippiat
- Stress, Immunity, Pathogens Laboratory, SIMPA UR7300, Université de Lorraine, F-54000 Nancy, France;
- Correspondence: (J.-P.F.); (R.K.)
| | - Romain Kapel
- Laboratoire Réactions et Génie des Procédés, Université de Lorraine, Unité Mixte de Recherche CNRS/Ministère (UMR) 7274, LRGP, F-54500 Vandœuvre-lès-Nancy, France; (T.T.L.); (X.F.); (A.A.)
- Correspondence: (J.-P.F.); (R.K.)
| |
Collapse
|
13
|
Du Y, Huang P, Jin W, Li C, Yang J, Wan H, He Y. Optimization of Extraction or Purification Process of Multiple Components from Natural Products: Entropy Weight Method Combined with Plackett-Burman Design and Central Composite Design. Molecules 2021; 26:molecules26185572. [PMID: 34577043 PMCID: PMC8469851 DOI: 10.3390/molecules26185572] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2021] [Revised: 09/04/2021] [Accepted: 09/10/2021] [Indexed: 11/16/2022] Open
Abstract
In this paper, the optimization of the extraction/purification process of multiple components was performed by the entropy weight method (EWM) combined with Plackett-Burman design (PBD) and central composite design (CCD). We took the macroporous resin purification of Astragalus saponins as an example to discuss the practicability of this method. Firstly, the weight of each component was given by EWM and the sum of the product between the componential content and its weight was defined as the comprehensive score, which was taken as the evaluation index. Then, the single factor method was adopted for determining the value range of each factor. PBD was applied for screening the significant factors. Important variables were further optimized by CCD to determine the optimal process parameters. After the combination of EWM, PBD and CCD, the resulting optimal purification conditions were as follows: pH value of 6.0, the extraction solvent concentration of 0.15 g/mL, and the ethanol volume fraction of 75%. Under the optimal conditions, the practical comprehensive score of recoveries of saponins was close to the predicted value (n = 3). Therefore, the present study provided a convenient and efficient method for extraction and purification optimization technology of multiple components from natural products.
Collapse
Affiliation(s)
- Yu Du
- School of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou 310053, China; (Y.D.); (P.H.); (W.J.)
| | - Pengcheng Huang
- School of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou 310053, China; (Y.D.); (P.H.); (W.J.)
| | - Weifeng Jin
- School of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou 310053, China; (Y.D.); (P.H.); (W.J.)
| | - Chang Li
- School of Life Sciences, Zhejiang Chinese Medical University, Hangzhou 310053, China;
| | - Jiehong Yang
- School of Basic Medicine Sciences, Zhejiang Chinese Medical University, Hangzhou 310053, China;
| | - Haitong Wan
- School of Life Sciences, Zhejiang Chinese Medical University, Hangzhou 310053, China;
- Correspondence: (H.W.); (Y.H.)
| | - Yu He
- School of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou 310053, China; (Y.D.); (P.H.); (W.J.)
- Correspondence: (H.W.); (Y.H.)
| |
Collapse
|
14
|
Sun J, Su X, Zhang Z, Hu D, Hou G, Zhao F, Sun J, Cong W, Wang C, Li H. Separation of three chromones from Saposhnikovia divaricata using macroporous resins followed by preparative high-performance liquid chromatography. J Sep Sci 2021; 44:3287-3294. [PMID: 34240798 DOI: 10.1002/jssc.202100345] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2021] [Revised: 06/08/2021] [Accepted: 07/04/2021] [Indexed: 11/11/2022]
Abstract
Prim-O-glucosylcimifugin, cimifugin, and 5-O-methylvisamminoside are three major chromone derivatives of Saposhnikovia divaricata that have many pharmacological activities, such as anti-inflammatory and antitumor activities. In the present work, an effective method for the simultaneous separation of prim-O-glucosylcimifugin, cimifugin, and 5-O-methylvisamminoside with high purities was established using HPD-300 resin coupled with preparative high-performance liquid chromatography. The adsorption kinetics curves of the three compounds on the HPD-300 resin were studied and found to fit well according to the pseudo-second-order equation. The adsorption isotherm results indicated that the adsorption process of the three compounds was exothermic. After a one-run treatment with the resin, the contents of prim-O-glucosylcimifugin, cimifugin, and 5-O-methylvisamminoside increased from 0.29, 0.06, and 0.37% to 13.07, 2.83, and 16.91% with recovery yields of 76.38, 78.25, and 76.73%, respectively. Finally, the purities of the three compounds were found to reach more than 95% after further separation using preparative high-performance liquid chromatography. The method developed in this study was effective and could simultaneously separate three chromones from Saposhnikovia divaricate. The experimental results also showed that the HPD-300 resin is suitable for the separation of chromone derivatives.
Collapse
Affiliation(s)
- Jiajia Sun
- School of Pharmacy, the Key Laboratory of Prescription Effect and Clinical valuation of State Administration of Traditional Chinese Medicine of China, Binzhou Medical University, Yantai, P. R. China
| | - Xiangyi Su
- School of Pharmacy, the Key Laboratory of Prescription Effect and Clinical valuation of State Administration of Traditional Chinese Medicine of China, Binzhou Medical University, Yantai, P. R. China
| | - Zhe Zhang
- School of Pharmacy, the Key Laboratory of Prescription Effect and Clinical valuation of State Administration of Traditional Chinese Medicine of China, Binzhou Medical University, Yantai, P. R. China
| | - Dexiang Hu
- School of Pharmacy, the Key Laboratory of Prescription Effect and Clinical valuation of State Administration of Traditional Chinese Medicine of China, Binzhou Medical University, Yantai, P. R. China
| | - Guige Hou
- School of Pharmacy, the Key Laboratory of Prescription Effect and Clinical valuation of State Administration of Traditional Chinese Medicine of China, Binzhou Medical University, Yantai, P. R. China
| | - Feng Zhao
- School of Pharmacy, the Key Laboratory of Prescription Effect and Clinical valuation of State Administration of Traditional Chinese Medicine of China, Binzhou Medical University, Yantai, P. R. China
| | - Jufeng Sun
- School of Pharmacy, the Key Laboratory of Prescription Effect and Clinical valuation of State Administration of Traditional Chinese Medicine of China, Binzhou Medical University, Yantai, P. R. China
| | - Wei Cong
- School of Pharmacy, the Key Laboratory of Prescription Effect and Clinical valuation of State Administration of Traditional Chinese Medicine of China, Binzhou Medical University, Yantai, P. R. China
| | - Chunhua Wang
- School of Pharmacy, the Key Laboratory of Prescription Effect and Clinical valuation of State Administration of Traditional Chinese Medicine of China, Binzhou Medical University, Yantai, P. R. China
| | - Hongjuan Li
- School of Pharmacy, the Key Laboratory of Prescription Effect and Clinical valuation of State Administration of Traditional Chinese Medicine of China, Binzhou Medical University, Yantai, P. R. China
| |
Collapse
|
15
|
Wang X, Su J, Chu X, Zhang X, Kan Q, Liu R, Fu X. Adsorption and Desorption Characteristics of Total Flavonoids from Acanthopanax senticosus on Macroporous Adsorption Resins. Molecules 2021; 26:4162. [PMID: 34299437 DOI: 10.3390/molecules26144162] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2021] [Revised: 07/04/2021] [Accepted: 07/05/2021] [Indexed: 11/24/2022] Open
Abstract
We examined the application of six different resins with the aim of selecting a macroporous resin suitable for purifying Acanthopanax senticosus total flavonoids (ASTFs) from Acanthopanax senticosus crude extract (EAS) by comparing their adsorption/desorption capacities, which led to the selection of HPD-600. Research on the adsorption mechanism showed that the adsorption process had pseudo-second-order kinetics and fit the Freundlich adsorption model. Moreover, the analysis of thermodynamic parameters indicated that the adsorption process is spontaneous and endothermic. The optimal conditions for purification of ASTFs were determined as sample pH of 3, 60% ethanol concentration, and 3 BV·h−1 flow rate, for both adsorption and desorption, using volumes of 2.5 and 4 BV, respectively. The application of macroporous resin HPD-600 to enrich ASTFs resulted in an increase in the purity of total flavonoids, from 28.79% to 50.57%. Additionally, the antioxidant capacity of ASTFs was higher than that of EAS, but both were lower than that of L-ascorbic acid. The changes in ASTFs compositions were determined using ultra-performance liquid chromatography–tandem mass spectrometry (UHPLC–MS/MS), with the results illustrating that the levels of seven major flavonoids of ASTFs were increased compared to that in the crude extract.
Collapse
|
16
|
Zhang M, Ma W, Wang C, Yang X, Lou Y, Xia X, Xu H. Optimization of Enzyme-Assisted Extraction and Purification of Flavonoids from Pinus koraiensis Nut-Coated Film and Antioxidant Activity Evaluation. Molecules 2021; 26:1950. [PMID: 33808428 DOI: 10.3390/molecules26071950] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2021] [Revised: 03/20/2021] [Accepted: 03/25/2021] [Indexed: 11/16/2022] Open
Abstract
Pinus koraiensis nut-coated film is a kind of by-product of nut processing, which has been shown to contain flavonoids, polyphenols, and other substances that can be used to produce natural antioxidant extracts. In this study, response surface methodology (RSM) was used to optimize the extraction process of flavonoids of P. koraiensis nut-coated film (PNF), and macroporous resin HPD600 was used to purify PNF (P-PNF). Its antioxidant activity was examined by DPPH (1,1-diphenyl-2-picrylhydrazyl) radical scavenging capacity, oxygen free radical absorption capacity (ORAC), total oxygen radical capture (TRAP), and iron ion reduction capacity. Under the ideal extraction conditions comprising a cellulase dosage of 90 U/g, a material/liquid ratio of 1:20 (g/mL), and an extraction time of 2 h, the PNF yield was 3.37%. Purification conditions were sample concentration of 2.0 mg/mL, pH of 5, water washing volume of 3 bed volume (BV), eluent ethanol concentration of 50%, and volume of 2 BV. The P-PNF recovery was 84.32%, and purity increased from 33.80% to 61.70%. Additionally, P-PNF showed increased antioxidant activity compared to PNF. Cumulatively, this study obtained the optimal values for the process parameters in order to achieve the maximum rates of extraction of PNF for economically optimal production at an industrial scale.
Collapse
|
17
|
Zhang S, Gong X, Qu H. A simple and effective method for the preparation of high-purity shikimic acid from chromatography wash effluent of Ginkgo biloba leaf extract by macroporous resin considering the effect of varying feed solution compositions. J Pharm Pharmacol 2021; 73:447-459. [PMID: 33793829 DOI: 10.1093/jpp/rgaa013] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Accepted: 10/03/2020] [Indexed: 11/12/2022]
Abstract
OBJECTIVES The present study investigated the feasibility of preparing high-purity shikimic acid (SA) from the chromatography wash effluent of Ginkgo biloba leaf extract by macroporous resin. METHODS First, static/dynamic adsorption and desorption were conducted to screen out the optimal resin. Second, the key parameters of the chromatographic process were optimised with face-centred central composite design (CCD). Third, wash effluent indices were measured, different batches of wash effluent were used to prepare SA under the optimised parameters, and the effect of varying feed solution compositions on final products was investigated. KEY FINDINGS It was found that the final purity and recovery rate of SA prepared with ADS-21 resin were not lower than 70 and 60%, respectively, when the purity of SA in the wash effluent was higher than 21.4%. The quality of the final product can be predicted based on the properties of wash effluent. CONCLUSIONS The proposed method could not only provide a simple, green and promising approach for the large-scale purification of SA from wash effluent but also be used to develop process intermediate quality standards for other natural products.
Collapse
Affiliation(s)
- Sijie Zhang
- Pharmaceutical Informatics Institute, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, China
| | - Xingchu Gong
- Pharmaceutical Informatics Institute, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, China
| | | |
Collapse
|
18
|
Abstract
This experiment treated perilla seeds with different concentrations of NaCl solution to enrich and purify their rosmarinic acid (RosA). The results showed that low concentrations of salt (0-20 mmol/L) promoted seed germination, while high concentrations (> 20 mmol/L) inhibited germination. When the salt concentration was 20 mmol/L, the germination rate was the highest. The content of RosA in germinated perilla seeds was 3.5 mg/g, which was 3.5 times as much as that in the seeds without germination. The RosA was purified using NK-109 macroporous resin and its adsorption kinetics, isotherms and thermodynamics were determined. The adsorption kinetics showed that the adsorption behavior of RosA in NK-109 resin conformed to the pseudo-second-order kinetic model. The model for RosA in the NK-109 resin exhibited Langmuir adsorption based on a spontaneous exothermic process according to its adsorption thermodynamics, which included both physical and chemical adsorption. The optimized process conditions were as follows: the loading concentration of 0.04 mg/mL, loading volume of 40 mL, 70% methanol as the eluent with the volume of 60 mL, and the purity of RosA was 42.1%.
Collapse
Affiliation(s)
- Jin-Hua Zhang
- College of Life Science, Shanxi University
- Shanxi Key Laboratory for Research and Development of Regional Plants, Shanxi University
| | - Min Zhang
- College of Life Science, Shanxi University
| | - Bao-Qing Bai
- College of Life Science, Shanxi University
- Shanxi Key Laboratory for Research and Development of Regional Plants, Shanxi University
| | | | - San-Hong Fan
- College of Life Science, Shanxi University
- Shanxi Key Laboratory for Research and Development of Regional Plants, Shanxi University
| |
Collapse
|
19
|
Wen S, Sun Y, Liu R, Chen L, Wang J, Peng S, Ma C, Yuan Y, Gong W, Wang N. Supramolecularly Poly(amidoxime)-Loaded Macroporous Resin for Fast Uranium Recovery from Seawater and Uranium-Containing Wastewater. ACS Appl Mater Interfaces 2021; 13:3246-3258. [PMID: 33406816 DOI: 10.1021/acsami.0c21046] [Citation(s) in RCA: 51] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Uranium is an extremely abundant resource in seawater that could supply nuclear fuel for over the long-term, but it is tremendously difficult to extract. Here, a new supramolecular poly(amidoxime) (PAO)-loaded macroporous resin (PLMR) adsorbent has been explored for highly efficient uranium adsorption. Through simply immersing the macroporous resin in the PAO solution, PAOs can be firmly loaded on the surface of the nanopores mainly by hydrophobic interaction, to achieve the as-prepared PLMR. Unlike existing amidoxime-based adsorbents containing many inner minimally effective PAOs, almost all the PAOs of PLMR have high uranium adsorption efficiency because they can form a PAO-layer on the nanopores with molecular-level thickness and ultrahigh specific surface area. As a result, this PLMR has highly efficient uranium adsorbing performance. The uranium adsorption capacity of the PLMR was 157 mg/g (the UPAO in the PLMR was 1039 mg/g), in 32 ppm uranium-spiked seawater for 120 h. Additionally, uranium in 1.0 L 100 ppb U-spiked both water and seawater can be removed quickly and the recovery efficiency can reach 91.1 ± 1.7% and 86.5 ± 1.9%, respectively, after being filtered by a column filled with 200 mg PLMR at 300 mL/min for 24 h. More importantly, after filtering 200 T natural seawater with 200 g PLMR for only 10 days, the uranium-uptake amount of the PLMR reached 2.14 ± 0.21 mg/g, and its average uranium adsorption speed reached 0.214 mg/(g·day) which is very fast among reported amidoxime-based adsorbents. This new adsorbent has great potential to quickly and massively recover uranium from seawater and uranium-containing wastewater. Most importantly, this work will provide a simple but general strategy to greatly enhance the uranium adsorption efficiency of amidoxime-functionalized adsorbents with ultrahigh specific surface area via supramolecular interaction, and even inspire the exploration of other adsorbents.
Collapse
Affiliation(s)
- Shunxi Wen
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou 570228, P. R. China
| | - Ye Sun
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou 570228, P. R. China
| | - Rongrong Liu
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou 570228, P. R. China
| | - Lin Chen
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou 570228, P. R. China
| | - Jiawen Wang
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou 570228, P. R. China
| | - Shuyi Peng
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou 570228, P. R. China
| | - Chunxin Ma
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou 570228, P. R. China
| | - Yihui Yuan
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou 570228, P. R. China
| | - Weitao Gong
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, P. R. China
| | - Ning Wang
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou 570228, P. R. China
| |
Collapse
|
20
|
Liu HY, Jin H, Zeng LM, Yang XY, Xin AY, Qin B. [Optimization of the fermentation conditions of Bacillus nematodes and screening of macroporous adsorption resin]. Ying Yong Sheng Tai Xue Bao 2020; 31:2287-2292. [PMID: 32715693 DOI: 10.13287/j.1001-9332.202007.036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Bacillus sp. SMrs28, metabolites from which had significant nematicidal activity, was isolated from the rhizosphere soil of Stellera chamaejasme. To determine the optimal fermentation conditions of the strain and the resin type of preliminary purified active ingredient, fermentation conditions were optimized by single factor experiment, while the macroporous resin types were screened in a static adsorption experiment. The results showed that the optimal fermentation conditions of SMrs28 strain were as follows: glucose and yeast powder were the best carbon source and nitrogen source, fermentation for 48 h, inoculum volume of 10%, temperature at 28 ℃,a rotation speed of 180 r·min-1, liquid volume of 30 mL in 150 mL triangular flask, and with an initial pH of 7.2. The static adsorption experiments showed that the adsorption and desorption of active ingre-dients in the fermentation broth by the macroporous adsorption resin D101 was significantly better than that of XAD-4, HP20 and AB-8, with the nematicidal activity of the desorption liquid being significantly improved. The nematicidal activity of fermentation broth was significantly improved by the optimization of fermentation conditions and the screening of optimal macroporous adsorption resins. These results laid a foundation for the further isolation and purification of active ingredients from SMrs28 strain, and provided theoretical basis for the development and utilization of microbial nematicides.
Collapse
Affiliation(s)
- Hao-Yue Liu
- Chinese Academy of Sciences Key Laboratory of Chemistry of Northwestern Plant Resources/Key Laboratory for Natural Medicines of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Hui Jin
- Chinese Academy of Sciences Key Laboratory of Chemistry of Northwestern Plant Resources/Key Laboratory for Natural Medicines of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - Li-Ming Zeng
- Chinese Academy of Sciences Key Laboratory of Chemistry of Northwestern Plant Resources/Key Laboratory for Natural Medicines of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - Xiao-Yan Yang
- Chinese Academy of Sciences Key Laboratory of Chemistry of Northwestern Plant Resources/Key Laboratory for Natural Medicines of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - Ai-Yi Xin
- Chinese Academy of Sciences Key Laboratory of Chemistry of Northwestern Plant Resources/Key Laboratory for Natural Medicines of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Bo Qin
- Chinese Academy of Sciences Key Laboratory of Chemistry of Northwestern Plant Resources/Key Laboratory for Natural Medicines of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| |
Collapse
|
21
|
Duan S, Huang Q, Shen X, Hu J, Yi X, Li Z, Ding B. Deproteinization of four macroporous resins for rapeseed meal polysaccharides. Food Sci Nutr 2020; 8:322-331. [PMID: 31993158 PMCID: PMC6977430 DOI: 10.1002/fsn3.1309] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2018] [Revised: 10/04/2019] [Accepted: 10/05/2019] [Indexed: 01/04/2023] Open
Abstract
In this study, the adsorption/desorption characteristics of rapeseed meal polysaccharides extract on four resins (HP-20, D3520, XAD-16, and AB-8) were evaluated. The results indicated that HP-20 resin had the best purification effect. Based on static adsorption test, the kinetics and isotherms of the four resins for protein and polysaccharide were investigated. The adsorption test showed that the pseudo-second-order kinetics model and the Freundlich isotherm model were more suitable for explanation of the adsorption process for protein and polysaccharide. Static desorption test showed that the highest protein desorption ratios of HP-20, D3520, and AB-8 resins could be obtained with 60% ethanol solution as eluate, and the highest protein desorption ratios of XAD-16 resin could be obtained with 40% ethanol solution as eluate. Dynamic adsorption/desorption tests of HP-20 resin showed that the deproteinization ratio was 91% and the polysaccharide recovery ratio was 62% when the treatment amount was 1.5 BV. Compared with three traditional methods, HP-20 resin adsorption method that the deproteinization ratio was 82% was more potent than the three traditional methods for purifying polysaccharides from rapeseed meal. In addition, UV/vis spectroscopy showed that most of the protein was absorbed by resins, and FT-IR spectroscopy indicated that the purity of the polysaccharide after purification was improved. Rapeseed meal polysaccharides could be effectively deproteinized using HP-20 resin, and it was suitable for purifying polysaccharides from rapeseed meal.
Collapse
Affiliation(s)
| | - Qian Huang
- College of Life ScienceYangtze UniversityJingzhouChina
| | - Xiaoqian Shen
- College of Life ScienceYangtze UniversityJingzhouChina
| | - Jie Hu
- College of Life ScienceYangtze UniversityJingzhouChina
| | - Xiangzhou Yi
- College of Life ScienceYangtze UniversityJingzhouChina
| | - Zhenshun Li
- College of Life ScienceYangtze UniversityJingzhouChina
- Jingchu Food Research & Development CentreYangtze UniversityJingzhouChina
| | - Baomiao Ding
- College of Life ScienceYangtze UniversityJingzhouChina
- Jingchu Food Research & Development CentreYangtze UniversityJingzhouChina
| |
Collapse
|
22
|
Hu J, Lv H, Hou M, Wang G, Lee YW, Shi J, Gu Z, Xu J. Preparative isolation and purification of B-type fumonisins by using macroporous resin column and high-speed countercurrent chromatography. Food Addit Contam Part A Chem Anal Control Expo Risk Assess 2019; 37:143-152. [PMID: 31647745 DOI: 10.1080/19440049.2019.1678768] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
B-type fumonisins (FBs) are water-soluble mycotoxins produced by Fusarium species, which are mainly found in maize products and threaten food safety. Toxicological studies and quantitative determinations of fumonisins require large amounts of pure toxins, and their high prices limit progress in FBs research. In this study, we used a macroporous resin column combined with high-speed countercurrent chromatography to separate large quantities of FBs. A fermented rice culture was extracted with 75% methanol. The dynamic adsorption capacity of FBs on XAD-2 resin was 27.5 mg/g resin at 25°C, pH 4.0, and then the FBs were desorbed with 60% methanol. The crude FBs were further purified using a biphasic system consisting of n-heptane/n-butanol/methanol/water (2:4:1:4, v/v/v/v). The method yielded 1.55 g of FB1 and 0.55 g of FB3 with purities of 96.8% and 95.6%, respectively, from 1 kg of rice culture, and the final overall yield of FBs was 74.8%.
Collapse
Affiliation(s)
- Junqiang Hu
- College of Food Science and Technology/College of Life Science, Nanjing Agricultural University, Nanjing, Jiangsu, P. R. China.,Jiangsu Key Laboratory for Food Quality and Safety-State Key Laboratory Cultivation Base, Ministry of Science and Technology/Key Laboratory for Control Technology and Standard for Agro-product Safety and Quality, Ministry of Agriculture and Rural Affairs/Key Laboratory for Agro-product Safety Risk Evaluation (Nanjing), Ministry of Agriculture and Rural Affairs/Collaborative Innovation Center for Modern Grain Circulation and Safety/Institute of Food Safety and Nutrition, Jiangsu Academy of Agricultural Sciences, Nanjing, Jiangsu, P. R. China
| | - Hui Lv
- College of Food Science and Technology/College of Life Science, Nanjing Agricultural University, Nanjing, Jiangsu, P. R. China.,Jiangsu Key Laboratory for Food Quality and Safety-State Key Laboratory Cultivation Base, Ministry of Science and Technology/Key Laboratory for Control Technology and Standard for Agro-product Safety and Quality, Ministry of Agriculture and Rural Affairs/Key Laboratory for Agro-product Safety Risk Evaluation (Nanjing), Ministry of Agriculture and Rural Affairs/Collaborative Innovation Center for Modern Grain Circulation and Safety/Institute of Food Safety and Nutrition, Jiangsu Academy of Agricultural Sciences, Nanjing, Jiangsu, P. R. China
| | - Mingxuan Hou
- College of Food Science and Technology/College of Life Science, Nanjing Agricultural University, Nanjing, Jiangsu, P. R. China.,Jiangsu Key Laboratory for Food Quality and Safety-State Key Laboratory Cultivation Base, Ministry of Science and Technology/Key Laboratory for Control Technology and Standard for Agro-product Safety and Quality, Ministry of Agriculture and Rural Affairs/Key Laboratory for Agro-product Safety Risk Evaluation (Nanjing), Ministry of Agriculture and Rural Affairs/Collaborative Innovation Center for Modern Grain Circulation and Safety/Institute of Food Safety and Nutrition, Jiangsu Academy of Agricultural Sciences, Nanjing, Jiangsu, P. R. China
| | - Gang Wang
- Jiangsu Key Laboratory for Food Quality and Safety-State Key Laboratory Cultivation Base, Ministry of Science and Technology/Key Laboratory for Control Technology and Standard for Agro-product Safety and Quality, Ministry of Agriculture and Rural Affairs/Key Laboratory for Agro-product Safety Risk Evaluation (Nanjing), Ministry of Agriculture and Rural Affairs/Collaborative Innovation Center for Modern Grain Circulation and Safety/Institute of Food Safety and Nutrition, Jiangsu Academy of Agricultural Sciences, Nanjing, Jiangsu, P. R. China
| | - Yin-Won Lee
- Jiangsu Key Laboratory for Food Quality and Safety-State Key Laboratory Cultivation Base, Ministry of Science and Technology/Key Laboratory for Control Technology and Standard for Agro-product Safety and Quality, Ministry of Agriculture and Rural Affairs/Key Laboratory for Agro-product Safety Risk Evaluation (Nanjing), Ministry of Agriculture and Rural Affairs/Collaborative Innovation Center for Modern Grain Circulation and Safety/Institute of Food Safety and Nutrition, Jiangsu Academy of Agricultural Sciences, Nanjing, Jiangsu, P. R. China
| | - Jianrong Shi
- College of Food Science and Technology/College of Life Science, Nanjing Agricultural University, Nanjing, Jiangsu, P. R. China.,School of Food and Biological Engineering, Jiangsu University, Zhenjiang, Jiangsu, P. R. China
| | - Zhenxin Gu
- College of Food Science and Technology/College of Life Science, Nanjing Agricultural University, Nanjing, Jiangsu, P. R. China
| | - Jianhong Xu
- College of Food Science and Technology/College of Life Science, Nanjing Agricultural University, Nanjing, Jiangsu, P. R. China.,School of Food and Biological Engineering, Jiangsu University, Zhenjiang, Jiangsu, P. R. China
| |
Collapse
|
23
|
Yang X, Shen C, Li H, Wang N, Ma J, Wang S, Zhao J, Chen J, Yang L, Chen T, Li Y. Combined chromatographic strategy based on macroporous resin, high-speed counter-current chromatography and preparative HPLC for systematic separation of seven antioxidants from the fruit of Terminalia billerica. J Sep Sci 2019; 42:3191-3199. [PMID: 31444948 DOI: 10.1002/jssc.201900356] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2019] [Revised: 08/11/2019] [Accepted: 08/20/2019] [Indexed: 01/24/2023]
Abstract
In the present study, combined chromatographic strategy based on macroporous resin, high-speed counter-current chromatography and preparative high-performance liquid chromatography for systematic separation of antioxidants from crude samples guided by high-performance liquid chromatography with 1,1-diphenyl-2-picrylhydrazyl has been successfully established. Based on this strategy, seven antioxidants including isorugosin A, β -1,2,3,6-tetragalloyl-D-glucose, chebulinic acid, 1,2,3,4,6-penta-O-galloyl-β -D-glucose, chebulagic acid, ethyl gallate, and gallic acid were obtained from the fruit of Terminalia billerica. First, high-performance liquid chromatography with 1,1-diphenyl-2-picrylhydrazyl experiment showed the presence of seven main antioxidants in the crude extract of the fruit of Terminalia billerica. Then, a macroporous resin column chromatography method was developed for the enrichment of these seven antioxidants. Finally, an efficient method based on high-speed counter-current chromatography and preparative high-performance liquid chromatography was developed for the separation of these antioxidants. In the selection of solvent systems, it was found that acetic acid could be a good regulator for modifying the partition coefficient values of tannins. The present study provides a reference for systematic separation of antioxidants from crude samples. Considering the general existence of antioxidants in crude samples, this combined chromatographic strategy might lead to broader application prospects.
Collapse
Affiliation(s)
- Xue Yang
- Qinghai Key Laboratory of Qinghai-Tibet Plateau Biological Resources, Northwest Institute of Plateau Biology, Chinese Academy of Science, Xining, P. R. China.,Savaid Medical School, University of the Chinese Academy of Sciences, Beijing, P. R. China
| | - Cheng Shen
- Qinghai Key Laboratory of Qinghai-Tibet Plateau Biological Resources, Northwest Institute of Plateau Biology, Chinese Academy of Science, Xining, P. R. China.,Savaid Medical School, University of the Chinese Academy of Sciences, Beijing, P. R. China
| | - Hongmei Li
- Qinghai Key Laboratory of Qinghai-Tibet Plateau Biological Resources, Northwest Institute of Plateau Biology, Chinese Academy of Science, Xining, P. R. China.,Savaid Medical School, University of the Chinese Academy of Sciences, Beijing, P. R. China
| | - Nana Wang
- Qinghai Key Laboratory of Qinghai-Tibet Plateau Biological Resources, Northwest Institute of Plateau Biology, Chinese Academy of Science, Xining, P. R. China.,Savaid Medical School, University of the Chinese Academy of Sciences, Beijing, P. R. China
| | - Jialin Ma
- Qinghai Key Laboratory of Qinghai-Tibet Plateau Biological Resources, Northwest Institute of Plateau Biology, Chinese Academy of Science, Xining, P. R. China
| | - Shuo Wang
- Qinghai Key Laboratory of Qinghai-Tibet Plateau Biological Resources, Northwest Institute of Plateau Biology, Chinese Academy of Science, Xining, P. R. China
| | - Jingyang Zhao
- Qinghai Key Laboratory of Qinghai-Tibet Plateau Biological Resources, Northwest Institute of Plateau Biology, Chinese Academy of Science, Xining, P. R. China
| | - Jilin Chen
- Qinghai Key Laboratory of Qinghai-Tibet Plateau Biological Resources, Northwest Institute of Plateau Biology, Chinese Academy of Science, Xining, P. R. China
| | - Li Yang
- Qinghai Key Laboratory of Qinghai-Tibet Plateau Biological Resources, Northwest Institute of Plateau Biology, Chinese Academy of Science, Xining, P. R. China
| | - Tao Chen
- Qinghai Key Laboratory of Qinghai-Tibet Plateau Biological Resources, Northwest Institute of Plateau Biology, Chinese Academy of Science, Xining, P. R. China
| | - Yulin Li
- Qinghai Key Laboratory of Qinghai-Tibet Plateau Biological Resources, Northwest Institute of Plateau Biology, Chinese Academy of Science, Xining, P. R. China
| |
Collapse
|
24
|
Hou M, Hu W, Xiu Z, Jiang A, Men L, Hao K, Sun X, Cao D. Preparative Purification of Total Flavonoids from Sophora tonkinensis Gagnep. by Macroporous Resin Column Chromatography and Comparative Analysis of Flavonoid Profiles by HPLC-PAD. Molecules 2019; 24:E3200. [PMID: 31484401 DOI: 10.3390/molecules24173200] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2019] [Revised: 08/30/2019] [Accepted: 08/31/2019] [Indexed: 11/25/2022] Open
Abstract
For the full development and utilization of Sophora tonkinensis Gagnep., this study was primarily intended to established a simple and efficient approach for the preparative purification of total flavonoids from S. tonkinensis by macroporous resin column chromatography (MRCC). The adsorption and desorption characteristics of the total flavonoids on ten macroporous resins were first studied, and AB-8 resin was chosen as the most suitable, and the adsorption data were best fitted to the pseudo-second-order kinetics model and Langmuir isotherm model. Furthermore, the technological parameters for the purification of the total flavonoids were optimized using column chromatography. After a sample one-step purification procedure, the content of the total flavonoids increased by about 4.76-fold from 12.14% to 57.82%, with a recovery yield of 84.93%. In addition, the comparative analysis of the flavonoid extracts before and after purification was performed by high-performance liquid chromatography coupled with photodiode-array detection (HPLC-PAD). The results showed that the contents of six major flavonoids in the purified product were all higher than before the purification. Therefore, the AB-8 MRCC established in this work was a promising method for the industrial-scale purification of the total flavonoids from S. tonkinensis.
Collapse
|
25
|
Li H, Shi J, Li Y, Wang C, Hou G, Cong W, Zhao F. Purification of spinosin from Ziziphi Spinosae Semen using macroporous resins followed by preparative high-performance liquid chromatography. J Sep Sci 2019; 42:3134-3140. [PMID: 31364279 DOI: 10.1002/jssc.201900433] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2019] [Revised: 07/23/2019] [Accepted: 07/26/2019] [Indexed: 01/30/2023]
Abstract
As a well-known traditional Chinese medicine, Ziziphi Spinosae Semen has been used for treating anxiety and insomnia for a long time. Spinosin, the main active C-glycoside flavonoid in Ziziphi Spinosae Semen, has attracted much attention because of its many pharmacological activities including strong hypnotic effects, anxiolytic-like effects, and so on. In the present work, high-purity spinosin was separated from Ziziphi Spinosae Semen using the HPD-300 resin followed by preparative high-performance liquid chromatography. The adsorption kinetics curve of spinosin on the HPD-300 resin was studied and fitted well by the pseudo-second-order equation. The adsorption isotherms were also constructed and low temperature favored the adsorption reaction. The separation parameters were optimized using dynamic adsorption and desorption tests. After a one-run treatment with HPD-300 resin, the concentration of spinosin increased 11.8-fold from 0.99 to 11.7% with a recovery yield of 80.4%. Furthermore, the purity of spinosin could surpass above 98% after separation by preparative high-performance liquid chromatography and recrystallization with a recovery yield of 72.6%. The developed method was effective and suitable for the large-scale preparation of spinosin. Moreover, it was confirmed that HPD-300 resin could enable good selection for the enrichment of flavonoids from different plants.
Collapse
Affiliation(s)
- Hongjuan Li
- School of Pharmacy, the Key Laboratory of Prescription Effect and Clinical valuation of State Administration of Traditional Chinese Medicine of China, Binzhou Medical University, Yantai, P. R. China
| | - Jiling Shi
- School of Pharmacy, the Key Laboratory of Prescription Effect and Clinical valuation of State Administration of Traditional Chinese Medicine of China, Binzhou Medical University, Yantai, P. R. China
| | - Yuanyuan Li
- School of Pharmacy, the Key Laboratory of Prescription Effect and Clinical valuation of State Administration of Traditional Chinese Medicine of China, Binzhou Medical University, Yantai, P. R. China
| | - Chunhua Wang
- School of Pharmacy, the Key Laboratory of Prescription Effect and Clinical valuation of State Administration of Traditional Chinese Medicine of China, Binzhou Medical University, Yantai, P. R. China
| | - Guige Hou
- School of Pharmacy, the Key Laboratory of Prescription Effect and Clinical valuation of State Administration of Traditional Chinese Medicine of China, Binzhou Medical University, Yantai, P. R. China
| | - Wei Cong
- School of Pharmacy, the Key Laboratory of Prescription Effect and Clinical valuation of State Administration of Traditional Chinese Medicine of China, Binzhou Medical University, Yantai, P. R. China
| | - Feng Zhao
- School of Pharmacy, the Key Laboratory of Prescription Effect and Clinical valuation of State Administration of Traditional Chinese Medicine of China, Binzhou Medical University, Yantai, P. R. China
| |
Collapse
|
26
|
Wang X, Wang S, Huang S, Zhang L, Ge Z, Sun L, Zong W. Purification of Polyphenols from Distiller's Grains by Macroporous Resin and Analysis of the Polyphenolic Components. Molecules 2019; 24:E1284. [PMID: 30986967 DOI: 10.3390/molecules24071284] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2019] [Revised: 03/22/2019] [Accepted: 03/30/2019] [Indexed: 11/16/2022] Open
Abstract
We aimed to purify polyphenols from distiller’s grain extract using macroporous resins and to identify its polyphenolic components. The influence of operational parameters on purification efficiency was investigated. The polyphenolic composition was analyzed by ultra-performance liquid chromatography tandem mass spectrometry (UPLC-MS/MS) and then quantified by UPLC-MS using authenticated standards. The results showed that the optimal purifying conditions were D101 resin with a dosage of 3 g, four hours adsorption, three hours desorption time, and 60% ethanol as the eluent, producing the highest purification rate of 51%. The purified distiller’s grain extract exhibited stronger antioxidant activity than the unpurified extracts, which was assessed using DPPH and ABTS methods (IC50 DPPH = 34.03 and 16.21 μg/mL, respectively; IC50 ABTS = 20.31 and 5.73 μg/mL, respectively). UPLC-MS results indicated that (−)-epicatechin is the major compound found in distiller’s grain extract which was quantified as 562.7 μg/g extract, followed by ferulic acid (518.2 μg/g), p-hydroxybenzoic acid (417.7 μg/g), caffeic acid (217.1 μg/g), syringic acid (158.0 μg/g) and quercetin (147.8 μg/g). Two compounds, vanillic acid (66.5 μg/g) and gallic acid (41.4 μg/g), were found in lower concentrations. The findings of this study suggest that purification of polyphenolic compounds from distiller’s grain by macroporous resins is feasible, providing a new and effective method for the secondary use of distiller’s grain resources.
Collapse
|
27
|
Zhang L, Zheng D, Zhang Q. Purification of total flavonoids from Rhizoma Smilacis Glabrae through cyclodextrin-assisted extraction and resin adsorption. Food Sci Nutr 2019; 7:449-456. [PMID: 30847122 PMCID: PMC6392876 DOI: 10.1002/fsn3.809] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2018] [Revised: 08/27/2018] [Accepted: 08/28/2018] [Indexed: 12/16/2022] Open
Abstract
Flavonoids are the main bioactive components responded for the health promoting effects of Rhizoma Smilacis Glabrae (RSG), an herbal material used in many functional food of China. An eco-friendly method with β-cyclodextrin (β-CD)-assisted extraction and resin adsorption/desorption was developed for total flavonoids purification from RSG. Because of complexes formation between flavonoids and β-CD, aqueous solution was used for extraction instead of ethanol. The CD-assisted extraction was optimized through defining optimal CD species, concentration, extraction temperature, and time. The adsorption property of eight macroporous resins on astilbin was compared by adsorption kinetics and capacity. All resins could reach the adsorption equilibrium within 2 hr. Further analyzed by Langmuir and Freundlich models, H103 resin with the best adsorption capacity was selected. The desorption property of different ethanol-water solution was compared. Results showed that by using 75% ethanol, astilbin could be well desorbed from the resin with the recovery of 96.3%. Because of complexes formation, the presence of β-CD would slightly decrease the adsorption rate and capacity of H103 with concentration dependent. In dynamic adsorption, decreasing the flow rate could minish the effects of β-CD. The developed method was successfully used for total flavonoids purified from RSG. The yield of purified product was 8.78%, with astilbin and total flavonoids content of 363.8 and 505.7 mg/g, respectively. The purity was 1.74 times increased with the recovery of 94.38% compared with the extract obtained directly through 50% ethanol extraction.
Collapse
Affiliation(s)
- Li Zhang
- Jiangxi Key Laboratory of Natural Product and Functional FoodCollege of Food Science and EngineeringJiangxi Agricultural UniversityNanchangChina
| | - Dan Zheng
- Jiangxi Key Laboratory of Natural Product and Functional FoodCollege of Food Science and EngineeringJiangxi Agricultural UniversityNanchangChina
| | - Qing‐Feng Zhang
- Jiangxi Key Laboratory of Natural Product and Functional FoodCollege of Food Science and EngineeringJiangxi Agricultural UniversityNanchangChina
| |
Collapse
|
28
|
Yang X, Wei M, Tian H, Liu T, Yang L. Enrichment and Purification of Aucubin from Eucommia ulmoides Ionic Liquid Extract Using Macroporous Resins. Materials (Basel) 2018; 11:ma11091758. [PMID: 30231478 PMCID: PMC6163283 DOI: 10.3390/ma11091758] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/17/2018] [Revised: 09/09/2018] [Accepted: 09/14/2018] [Indexed: 12/12/2022]
Abstract
Aiming to address the shortcomings of high-concentration ethanol or methanol extraction solutions that need to be diluted and concentrated prior to use in conventional macroporous resin adsorption approaches, an efficient approach for enrichment and purification of aucubin from the ionic liquid extraction solution of samaras of Eucommia ulmoides was proposed. Among the nine kinds of macroporous resins investigated, the HPD850 resin was found to be the most suitable. Equilibrium adsorption tests were investigated and found to be better fitted by the Langmuir isotherm model. After the dynamic tests on a column packed with HPD850, the optimum operational conditions were as follows: for the absorption process, an initial aucubin concentration of 9.87 mg/L, a sample volume of 13 bed volumes (BV), and a flow rate of 2 BV/h; for the water washing process, 5 BV of deionized water and a flow rate of 3 BV/h; for the ethanol desorption process, a 10–80% ethanol volume fraction as the eluent, 2 BV for each ethanol volume fraction, and a flow rate of 3 BV/h. The 40–80% ethanol volume fraction eluent was collected and concentrated to produce the final products, resulting in an aucubin purity and recovery of 79.41% and 72.92%, respectively.
Collapse
Affiliation(s)
- Xinyu Yang
- Key Laboratory of Forest Plant Ecology, Ministry of Education, Northeast Forestry University, Harbin 150040, China.
| | - Mengxia Wei
- Key Laboratory of Forest Plant Ecology, Ministry of Education, Northeast Forestry University, Harbin 150040, China.
| | - Hao Tian
- Institute of Agro-Poducts Processing Science and Technology, Yunnan Academy of Agricultural Sciences, Kunming 650221, China.
| | - Tingting Liu
- College of Pharmacy, Qiqihar Medical University, Qiqihar 161006, China.
| | - Lei Yang
- Key Laboratory of Forest Plant Ecology, Ministry of Education, Northeast Forestry University, Harbin 150040, China.
| |
Collapse
|
29
|
Zhang L, Wu T, Xiao W, Wang Z, Ding G, Zhao L. Enrichment and Purification of Total Ginkgo Flavonoid O-Glycosides from Ginkgo Biloba Extract with Macroporous Resin and Evaluation of Anti-Inflammation Activities In Vitro. Molecules 2018; 23:E1167. [PMID: 29757247 DOI: 10.3390/molecules23051167] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2018] [Revised: 05/02/2018] [Accepted: 05/07/2018] [Indexed: 11/16/2022] Open
Abstract
In the present study, the performance and separation characteristics of six macroporous resins for the enrichment and purification of total ginkgo flavonoid O-glycosides (TGFs) (quercetin (I), kaempferol (II), isorhamnetin (III)) from Ginkgo Biloba extracts (EGB) are evaluated. The adsorption and desorption properties of TGFs are studied on macroporous resins, including D101, D201, AB-8, HPD400, D301, and D311. Along with the results, AB-8 resin exhibits the best adsorption and desorption capacity for these three ginkgo flavonoid O-glycosides among the six resins. Adsorption isotherms are created on AB-8 resin and fit well to the Langmuir (R2 > 0.96) and Freundlich (R2 > 0.92, 0.3 < 1/n < 0.7) models. After the treatment with gradient elution on AB-8 resin packed chromatography column, the contents of the three main ginkgo flavonoid O-glycosides (I, II, and III) increase from 8.93%, 9.88%, and 6.11% in the extracts to 30.12%, 35.21%, and 14.14%, respectively, in the product. The recoveries of compounds I, II, and III are 88.76%, 93.78%, and 60.90%, respectively. Additionally, the anti-inflammatory effects of TGFs are evaluated in LPS-treated RAW 264.7 macrophages, and the result demonstrates that TGFs could significantly inhibit LPS-induced NO release in vitro in a dose-dependent manner compared with the control group. These findings suggest that TGFs could potentially be natural antioxidants and anti-inflammatory ingredients that could be used in pharmaceutical products and functional food additives.
Collapse
|
30
|
Zhou G, Ma J, Tang Y, Wang X, Zhang J, Duan JA. Multi-Response Optimization of Ultrasonic Assisted Enzymatic Extraction Followed by Macroporous Resin Purification for Maximal Recovery of Flavonoids and Ginkgolides from Waste Ginkgo biloba Fallen Leaves. Molecules 2018; 23:E1029. [PMID: 29702576 DOI: 10.3390/molecules23051029] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2018] [Revised: 04/12/2018] [Accepted: 04/19/2018] [Indexed: 02/06/2023] Open
Abstract
In the present study, the process of ultrasonic assisted enzymatic extraction (UAEE), followed by macroporous resin purification, was successfully developed to achieve maximal recovery of flavonoids and ginkgolides from Ginkgo biloba fallen leaves (GBFL). Three effective extracted factors, including UAE power, EtOH%, and the amount of cellulase were screened by Plackett–Burman design (PBD). The important variables were further optimized by rotatable central composite design (RCCD). After the combination of PBD and RCCD, the resulting optimal UAEE conditions were as follows: UAE power of 218 W; EtOH% of 68%; the amount of cellulase of 8.4 mg; UAE temperature of 40 °C; UAE time of 20 min; pH of 5.0; and, sample particle size of 40 mesh. Under the optimum conditions; the yields of flavonoids were 0.74 ± 0.05% (n = 3) and ginkgolides was 0.42 ± 0.06% (n = 3), which were close to the predicted values. Moreover, the further enriching flavonoids and ginkgolides from the obtained GBFL extracts using the above optimum UAEE condition was successfully achieved by macroporous resin DA-201. After column adsorption and desorption on DA-201; the percentage of total flavonoids was (25.36 ± 1.03)%; ginkgolides was (12.43 ± 0.85)% and alkylphenols was (0.003 ± 0.0005)% from the obtained dry extracts of GBFL which were complied with Chinese pharmacopoeias. Therefore, the present study provided a convenient and efficient method for extraction and purification of flavonoids and ginkgolides from waste GBFL.
Collapse
|
31
|
Chen J, Wang Y, Pan L, Shen H, Fu D, Fu B, Sun C, Zheng L. Separation and purification of two minor typical diarrhetic shellfish poisoning toxins from harmful marine microalgae via combined liquid chromatography with mass spectrometric detection. J Sep Sci 2017; 40:2906-2913. [PMID: 28513110 DOI: 10.1002/jssc.201700125] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2017] [Revised: 05/08/2017] [Accepted: 05/12/2017] [Indexed: 01/22/2023]
Abstract
A novel method was developed for the purification of two typical diarrhetic shellfish poisoning toxins from toxin-producing marine microalgae using macroporous resin, high-speed countercurrent chromatography-mass spectrometry, and semipreparative high-performance liquid chromatography-mass spectrometry. Analytical high-performance liquid chromatography-mass spectrometry was used for identification and purity analysis of okadaic acid and dinophysistoxin-1 because they exhibit no visible or ultraviolet absorption. First, four kinds of macroporous resins were investigated, and HP-20 macroporous resin was selected for the preenrichment and cleanup of the two target toxins. Second, the resin-purified sample was further purified using high-speed countercurrent chromatography coupled with a mass spectrometer. The purities of the obtained okadaic acid and dinophysistoxin-1 were 89.0 and 83.0%, respectively, as determined through analytical high-performance liquid chromatography-mass spectrometry. Finally, further purification was carried out using semipreparative high-performance liquid chromatography with mass spectrometry, and the purities of the final okadaic acid and dinophysistoxin-1 products were both over 98.0% based on the analytical high-performance liquid chromatography-mass spectrometry chromatograms and fraction spectra. This work demonstrates that the proposed purification process is a powerful method for the preparation of high-purity okadaic acid and dinophysistoxin-1 from toxin-producing marine microalgae. Moreover, it is particularly important for the purification and preparation of minor toxins that exhibit no visible or ultraviolet absorption from harmful marine algae.
Collapse
Affiliation(s)
- Junhui Chen
- Qingdao Key Laboratory of Analytical Technology Development and Standardization of Chinese Medicines, The First Institute of Oceanography, State Oceanic Administration, Qingdao, China.,Laboratory for Marine Ecology and Environmental Science, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
| | - Yanlong Wang
- Qingdao Key Laboratory of Analytical Technology Development and Standardization of Chinese Medicines, The First Institute of Oceanography, State Oceanic Administration, Qingdao, China
| | - Lei Pan
- College of Chemistry and Molecular Engineering, Qingdao Technology University of Shandong, Qingdao, China
| | - Huihui Shen
- School of Ocean Sciences, China University of Geosciences, Beijing, China
| | - Dan Fu
- Qingdao Key Laboratory of Analytical Technology Development and Standardization of Chinese Medicines, The First Institute of Oceanography, State Oceanic Administration, Qingdao, China
| | - Boqiang Fu
- Division of Medical and Biological Measurements Laboratory of Biological Analysis and Cell Technology, National Institute of Metrology, Beijing, China
| | - Chengjun Sun
- Qingdao Key Laboratory of Analytical Technology Development and Standardization of Chinese Medicines, The First Institute of Oceanography, State Oceanic Administration, Qingdao, China
| | - Li Zheng
- Qingdao Key Laboratory of Analytical Technology Development and Standardization of Chinese Medicines, The First Institute of Oceanography, State Oceanic Administration, Qingdao, China.,Laboratory for Marine Ecology and Environmental Science, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
| |
Collapse
|
32
|
Zhao X, Jiang J, Yang G, Huang J, Yang G, He G, Chu Z, Hang T, Fan G. Profiling and Preparation of Metabolites from Pyragrel in Human Urine by Online Solid-Phase Extraction Coupled with High Performance Liquid Chromatography Tandem Mass Spectrometry Followed by a Macroporous Resin-Based Purification Approach. Molecules 2017; 22:E494. [PMID: 28335566 DOI: 10.3390/molecules22030494] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2017] [Revised: 03/18/2017] [Accepted: 03/19/2017] [Indexed: 12/26/2022] Open
Abstract
Pyragrel, a new anticoagulant drug, is derived from the molecular combination of ligustrazine and ferulic acid. Pyragrel showed significant inhibitory activity against platelet aggregation induced by adenosine diphosphate (ADP), and had been approved for a phase I clinical trial by CFDA. To characterize the metabolites of Pyragrel in human urine after intravenous administration, a reliable online solid-phase extraction couple with high performance liquid chromatography tandem mass spectrometry (online SPE-HPLC-MSn) method was conceived and applied. Five metabolites were detected and tentatively identified, which suggested that the major metabolic pathways of Pyragrel in human were double-bond reduction, double-bond oxidation, and then followed by glucuronide conjugation. Two main metabolites were then prepared using β-glucuronide hydrolysis and macroporous resin purification approach followed by preparative high-performance liquid chromatography (PHPLC) method, with their structures confirmed on the basis of nuclear magnetic resonance (NMR) data. This study provided information for the further study of the metabolism and excretion of Pyragrel.
Collapse
|
33
|
Yue D, Yang L, Liu S, Li J, Li W, Ma C. A Continuous Procedure Based on Column Chromatography to Purify Anthocyanins from Schisandra chinensis by a Macroporous Resin plus Gel Filtration Chromatography. Molecules 2016; 21:E204. [PMID: 26861279 DOI: 10.3390/molecules21020204] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2015] [Accepted: 02/03/2016] [Indexed: 12/02/2022] Open
Abstract
In our previous study, as natural food colorants and antioxidants, the color and content stabilities of Schisandra chinensis (S. chinensis) anthocyanins were investigated. In this work, the purification process parameters of S. chinensis anthocyanins using a macroporous resin and gel filtration chromatography were evaluated. The optimized parameters of static adsorption and desorption were as follows. The selected resin is HPD-300 (nonpolar copolymer styrene type resin), and the anthocyanins adsorption saturation capacity of HPD-300 resin was 0.475 mg/g dry resin. Adsorption time was 4 h, and 0.517 mg/mL of S. chinensis anthocyanins was adsorbed on the resin column with a flow rate of 39 mL/h (3 BV/h). After adsorption, the anthocyanins were completely desorpted with 2.5 BV of 90% (v/v) ethanol solution, and the desorption flow rate was 13 mL/h (1 BV/h). After purification by dynamic adsorption and desorption, the anthocyanins content in the effluent increased from 47.6 mg/g to 128.4 mg/g, the purity of anthocyanins increased six-fold from 5.08% to 30.43%, and the anthocyanins recovery was 96.5%. The major constituent of S. chinensis anthocyanins was isolated with Bio-Gel P2 gel filtration chromatography, and it was detected by liquid chromatography electrospray ionisation tandem mass spectrometry (LC-ESI-MS) as cyanidin-3-O-xylosylrutinoside. Moreover, the antioxidant activities of S. chinensis anthocyanins were investigated. After purification using the HPD-300 resin, the antioxidant activities of anthocyanins were increased 1.2-fold (FRAP) and 1.7-fold (ABTS).
Collapse
|
34
|
Luo H, Liu H, Cao Y, Xu D, Mao Z, Mou Y, Meng J, Lai D, Liu Y, Zhou L. Enhanced production of botrallin and TMC-264 with in situ macroporous resin adsorption in mycelial liquid culture of the endophytic fungus Hyalodendriella sp. Ponipodef12. Molecules 2014; 19:14221-34. [PMID: 25211003 PMCID: PMC6271592 DOI: 10.3390/molecules190914221] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2014] [Revised: 09/01/2014] [Accepted: 09/03/2014] [Indexed: 01/16/2023] Open
Abstract
Hyalodendriella sp. Ponipodef12, an endophytic fungus from the hybrid "Neva" of Populus deltoides × P. nigra, is a high producer of the bioactive dibenzo-α-pyrones botrallin and TMC-264. However, both the botrallin and TMC-264 produced by Hyalodendriella sp. Ponipodef12 were retained as both intracellular and extracellular products. The aim of this study was to evaluate an in situ macroporous resin adsorption for enhancement of botrallin and TMC-264 production in mycelial liquid culture of Hyalodendriella sp. Ponipodef12. Production of botrallin and TMC-264 was most effectively enhanced by macroporous resin DM-301 among the thirteen nonionic macroporous resins tested. The highest botrallin yield (51.47 mg/L, which was 2.29-fold higher than the control at 22.49 mg/L) was obtained by adding resin DM-301 at 4.38% (g/mL) to the culture broth on day 24 and allowing a period of 4 days for adsorption. The highest TMC-264 yield reached 47.74 mg/L, which was 11.76-fold higher than that of the control (4.06 mg/L), and was achieved by adding DM-301 resin at 4.38% (w/v) in the culture broth on day 24 and allowing a period of 6 days for adsorption. The results show that in situ resin adsorption is an effective strategy for enhancing production of botrallin and TMC-264, and also for facilitating their recovery from mycelial liquid culture of Hyalodendriella sp. Ponipodef12.
Collapse
Affiliation(s)
- Haiyu Luo
- MOA Key Laboratory of Plant Pathology, Department of Plant Pathology, College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China.
| | - Hongwei Liu
- MOA Key Laboratory of Plant Pathology, Department of Plant Pathology, College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China.
| | - Yuheng Cao
- MOA Key Laboratory of Plant Pathology, Department of Plant Pathology, College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China.
| | - Dan Xu
- MOA Key Laboratory of Plant Pathology, Department of Plant Pathology, College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China.
| | - Ziling Mao
- MOA Key Laboratory of Plant Pathology, Department of Plant Pathology, College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China.
| | - Yan Mou
- MOA Key Laboratory of Plant Pathology, Department of Plant Pathology, College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China.
| | - Jiajia Meng
- MOA Key Laboratory of Plant Pathology, Department of Plant Pathology, College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China.
| | - Daowan Lai
- MOA Key Laboratory of Plant Pathology, Department of Plant Pathology, College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China.
| | - Yang Liu
- Institute of Agro-products Processing Science and Technology, Chinese Academy of Agricultural Sciences, Beijing 100193, China.
| | - Ligang Zhou
- MOA Key Laboratory of Plant Pathology, Department of Plant Pathology, College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China.
| |
Collapse
|
35
|
Yang F, Yang L, Wang W, Liu Y, Zhao C, Zu Y. Enrichment and purification of syringin, eleutheroside E and isofraxidin from Acanthopanax senticosus by macroporous resin. Int J Mol Sci 2012; 13:8970-86. [PMID: 22942746 DOI: 10.3390/ijms13078970] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2012] [Revised: 06/29/2012] [Accepted: 07/06/2012] [Indexed: 11/17/2022] Open
Abstract
In order to screen a suitable resin for the preparative simultaneous separation and purification of syringin, eleutheroside E and isofraxidin from Acanthopanax senticosus, the adsorption and desorption properties of 17 widely used commercial macroporous resins were evaluated. According to our results, HPD100C, which adsorbs by the molecular tiers model, was the best macroporous resin, offering higher adsorption and desorption capacities and higher adsorption speed for syringin, eleutheroside E and isofraxidin than other resins. Dynamic adsorption and desorption tests were carried out to optimize the process parameters. The optimal conditions were as follows: for adsorption, processing volume: 24 BV, flow rate: 2 BV/h; for desorption, ethanol-water solution: 60:40 (v/v), eluent volume: 4 BV, flow rate: 3 BV/h. Under the above conditions, the contents of syringin, eleutheroside E and isofraxidin increased 174-fold, 20-fold and 5-fold and their recoveries were 80.93%, 93.97% and 93.79%, respectively.
Collapse
|