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Šamec D, Jurčević Šangut I, Karalija E, Šarkanj B, Zelić B, Šalić A. 3'-8″- Biflavones: A Review of Their Structural Diversity, Natural Occurrence, Role in Plants, Extraction and Identification. Molecules 2024; 29:4634. [PMID: 39407564 PMCID: PMC11478198 DOI: 10.3390/molecules29194634] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2024] [Revised: 09/18/2024] [Accepted: 09/23/2024] [Indexed: 10/20/2024] Open
Abstract
Dimeric forms of flavonoids, known as biflavonoids, are much less studied compared to monomeric forms. It is estimated that nearly 600 different natural biflavonoids have been described to date, containing various subtypes that can be subdivided according to the position of their combinations and the nature of the subunits. The group in which two monomers are linked by a 3'-8″-C atom includes the first isolated biflavonoid ginkgetin, derivatives of amentoflavone, and several other compounds. 3'-8″-biflavones recently attracted much attention as potential molecules with biological activity such as antiviral and antimicrobial activity and as effective molecules for the treatment of neurodegenerative and metabolic diseases and in cancer therapies. With the growing interest in them as pharmacologically active molecules, there is also increasing interest in finding new natural sources of 3'-8″-biflavones and optimizing methods for their extraction and identification. Herein, we have summarized the available data on the structural diversity, natural occurrence, role in plants, extraction, and identification of 3'-8″-biflavones.
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Affiliation(s)
- Dunja Šamec
- Department of Food Technology, University North, Trg Dr. Žarka Dolinara 1, HR-48000 Koprivnica, Croatia; (I.J.Š.); (B.Š.)
| | - Iva Jurčević Šangut
- Department of Food Technology, University North, Trg Dr. Žarka Dolinara 1, HR-48000 Koprivnica, Croatia; (I.J.Š.); (B.Š.)
| | - Erna Karalija
- Laboratory for Plant Physiology, Department of Biology, Faculty of Science, University of Sarajevo, Zmaja od Bosne 33-35, 71 000 Sarajevo, Bosnia and Herzegovina;
| | - Bojan Šarkanj
- Department of Food Technology, University North, Trg Dr. Žarka Dolinara 1, HR-48000 Koprivnica, Croatia; (I.J.Š.); (B.Š.)
| | - Bruno Zelić
- University of Zagreb Faculty of Chemical Engineering and Technology, Department of Reaction Engineering and Catalysis, Marulićev trg 19, HR-10000 Zagreb, Croatia;
- Department of Packaging, Recycling and Environmental Protection, University North, Trg dr. Žarka Dolinara 1, HR-48000 Koprivnica, Croatia
| | - Anita Šalić
- University of Zagreb Faculty of Chemical Engineering and Technology, Department of Thermodynamics, Mechanical Engineering and Energy, Marulićev trg 19, HR-10000 Zagreb, Croatia;
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Liu C, Qiao L, Gao Q, Zhang F, Zhang X, Lei J, Ren M, Xiao S, Kuang J, Deng S, Yuan X, Jiang Y, Wang G. Total biflavonoids extraction from Selaginella chaetoloma utilizing ultrasound-assisted deep eutectic solvent: Optimization of conditions, extraction mechanism, and biological activity in vitro. ULTRASONICS SONOCHEMISTRY 2023; 98:106491. [PMID: 37379745 PMCID: PMC10320385 DOI: 10.1016/j.ultsonch.2023.106491] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Revised: 06/01/2023] [Accepted: 06/14/2023] [Indexed: 06/30/2023]
Abstract
In this study, the deep eutectic solvent based ultrasound-assisted extraction (DES-UAE) was investigated for the efficient and environmentally friendly extraction of Selaginella chaetoloma total biflavonoids (SCTB). As an extractant for optimization, tetrapropylaminium bromide-1,4-butanediol (Tpr-But) was employed for the first time. 36 DESs were created, with Tpr-But producing the most effective results. Based on response surface methodology (RSM), the greatest extraction rate of SCTB was determined to be 21.68 ± 0.78 mg/g, the molar ratio of HBD to HBA was 3.70:1, the extraction temperature was 57 °C, and the water content of DES was 22 %. In accordance with Fick's second rule, a kinetic model for the extraction of SCTB by DES-UAE has been derived. With correlation coefficients 0.91, the kinetic model of the extraction process was significantly correlated with the general and exponential equations of kinetics, and some important kinetic parameters such as rate constants, energy of activation and raffinate rate were determined. In addition, molecular dynamics simulations were used to study the extraction mechanisms generated by different solvents. Comparing the effect of several extraction methods on S.chaetoloma using ultrasound-assisted extraction and conventional methods, together with SEM examination, revealed that DES-UAE not only saved time but also enhanced SCTB extraction rate by 1.5-3 folds. SCTB demonstrated superior antioxidant activity in three studies in vitro. Furthermore, the extract could suppress the growth of A549, HCT-116, HepG2, and HT-29 cancer cells. Alpha-Glucosidase (AG) inhibition experiment and molecular docking studies suggested that SCTB exhibited strong inhibitory activity against AG and potential hypoglycemic effects. The results of this study indicated that a Tpr-But-based UAE method was suitable for the efficient and environmentally friendly extraction of SCTB, and also shed light on the mechanisms responsible for the increased extraction efficiency, which could aid in the application of S.chaetoloma and provide insight into the extraction mechanism of DES.
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Affiliation(s)
- Chao Liu
- School of Pharmacy, Zunyi Medical University, Zunyi 563003, Guizhou, China
| | - Lei Qiao
- School of Pharmacy, Zunyi Medical University, Zunyi 563003, Guizhou, China
| | - Qiong Gao
- School of Pharmacy, Zunyi Medical University, Zunyi 563003, Guizhou, China
| | - Feng Zhang
- School of Pharmacy, Zunyi Medical University, Zunyi 563003, Guizhou, China
| | - Xin Zhang
- School of Pharmacy, Zunyi Medical University, Zunyi 563003, Guizhou, China
| | - Jie Lei
- Huabang Shengkai Pharmaceutical Co., Ltd, 400000 Chongqing, China
| | - Mengdie Ren
- School of Pharmacy, Zunyi Medical University, Zunyi 563003, Guizhou, China
| | - Shiji Xiao
- School of Pharmacy, Zunyi Medical University, Zunyi 563003, Guizhou, China
| | - Juxiang Kuang
- School of Pharmacy, Zunyi Medical University, Zunyi 563003, Guizhou, China
| | - Shixing Deng
- School of Pharmacy, Zunyi Medical University, Zunyi 563003, Guizhou, China
| | - Xinglin Yuan
- School of Pharmacy, Zunyi Medical and Pharmaceutical College, Zunyi 563003, Guizhou, China
| | - Yongmei Jiang
- School of Pharmacy, Zunyi Medical University, Zunyi 563003, Guizhou, China.
| | - Gang Wang
- School of Pharmacy, Zunyi Medical University, Zunyi 563003, Guizhou, China.
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Identification of Phytochemicals in Bioactive Extracts of Acacia saligna Growing in Australia. Molecules 2023; 28:molecules28031028. [PMID: 36770694 PMCID: PMC9919957 DOI: 10.3390/molecules28031028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2022] [Revised: 01/15/2023] [Accepted: 01/16/2023] [Indexed: 01/21/2023] Open
Abstract
Acacia saligna growing in Australia has not been fully investigated for its bioactive phytochemicals. Sequential polarity-based extraction was employed to provide four different extracts from individual parts of A. saligna. Bioactive extracts were determined using in vitro antioxidant and yeast α-glucosidase inhibitory assays. Methanolic extracts from barks, leaves, and flowers are the most active and have no toxicity against 3T3-L1 adipocytes. Compound isolation of bioactive extracts provided us with ten compounds. Among them are two novel natural products; naringenin-7-O-α-L-arabinopyranoside 2 and (3S*,5S*)-3-hydroxy-5-(2-aminoethyl) dihydrofuran-2(3H)-one 9. D-(+)-pinitol 5a (from barks and flowers), (-)-pinitol 5b (exclusively from leaf), and 2,4-di-t-butylphenol 7 are known natural products and new to A. saligna. (-)-Epicatechin 6, quercitrin 4, and myricitrin 8 showed potent antioxidant activities consistently in DPPH and ABTS assays. (-)-Epicatechin 6 (IC50 = 63.58 μM),D-(+)-pinitol 5a (IC50 = 74.69 μM), and naringenin 1 (IC50 = 89.71 μM) are the strong inhibitors against the α-glucosidase enzyme. The presence of these compounds supports the activities exerted in our methanolic extracts. The presence of 2,4-di-t-butylphenol 7 may support the reported allelopathic and antifungal activities. The outcome of this study indicates the potential of Australian A. saligna as a rich source of bioactive compounds for drug discovery targeting type 2 diabetes.
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Ren G, Xu G, Li R, Xie H, Cui Z, Wang L, Zhang C. Modulation of Bleomycin-induced Oxidative Stress and Pulmonary Fibrosis by Ginkgetin in Mice via AMPK. Curr Mol Pharmacol 2023; 16:217-227. [PMID: 35249515 DOI: 10.2174/1874467215666220304094058] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2021] [Revised: 12/20/2021] [Accepted: 12/29/2021] [Indexed: 11/22/2022]
Abstract
BACKGROUND Ginkgetin, a flavonoid extracted from Ginkgo biloba, has been shown to exhibit broad anti-inflammatory, anticancer, and antioxidative bioactivity. Moreover, the extract of Ginkgo folium has been reported on attenuating bleomycin-induced pulmonary fibrosis, but the anti-fibrotic effects of ginkgetin are still unclear. This study was intended to investigate the protective effects of ginkgetin against experimental pulmonary fibrosis and its underlying mechanism. METHODS In vivo, bleomycin (5 mg/kg) in 50 μL saline was administrated intratracheally in mice. One week after bleomycin administration, ginkgetin (25 or 50 mg/kg) or nintedanib (40 mg/kg) was administrated intragastrically daily for 14 consecutive days. In vitro, the AMPK-siRNA transfection in primary lung fibroblasts further verified the regulatory effect of ginkgetin on AMPK. RESULTS Administration of bleomycin caused characteristic histopathology structural changes with elevated lipid peroxidation, pulmonary fibrosis indexes, and inflammatory mediators. The bleomycin- induced alteration was normalized by ginkgetin intervention. Moreover, this protective effect of ginkgetin (20 mg/kg) was equivalent to that of nintedanib (40 mg/kg). AMPK-siRNA transfection in primary lung fibroblasts markedly blocked TGF-β1-induced myofibroblasts transdifferentiation and abolished oxidative stress. CONCLUSION All these results suggested that ginkgetin exerted ameliorative effects on bleomycininduced oxidative stress and lung fibrosis mainly through an AMPK-dependent manner.
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Affiliation(s)
- Guoqing Ren
- State Key Laboratory of Natural Medicines, School of Traditional Chinese Medicines, China Pharmaceutical University, Nanjing, P.R. China
- Sino-Jan Joint Lab of Natural Health Products Research, School of Traditional Chinese Medicines, China Pharmaceutical University, Nanjing, P.R. China
| | - Gonghao Xu
- State Key Laboratory of Natural Medicines, School of Traditional Chinese Medicines, China Pharmaceutical University, Nanjing, P.R. China
| | - Renshi Li
- State Key Laboratory of Natural Medicines, School of Traditional Chinese Medicines, China Pharmaceutical University, Nanjing, P.R. China
- Sino-Jan Joint Lab of Natural Health Products Research, School of Traditional Chinese Medicines, China Pharmaceutical University, Nanjing, P.R. China
| | - Haifeng Xie
- Chengdu Biopurify Phytochemicals Ltd., Chengdu, P.R. China
| | - Zhengguo Cui
- Sino-Jan Joint Lab of Natural Health Products Research, School of Traditional Chinese Medicines, China Pharmaceutical University, Nanjing, P.R. China
- Department of Environmental Health, 23-3 Matsuoka Shimoaizuki, Eiheiji,Fukui 910-1193, Japan
| | - Lei Wang
- State Key Laboratory of Natural Medicines, School of Traditional Chinese Medicines, China Pharmaceutical University, Nanjing, P.R. China
| | - Chaofeng Zhang
- State Key Laboratory of Natural Medicines, School of Traditional Chinese Medicines, China Pharmaceutical University, Nanjing, P.R. China
- Sino-Jan Joint Lab of Natural Health Products Research, School of Traditional Chinese Medicines, China Pharmaceutical University, Nanjing, P.R. China
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Natural green deep eutectic solvents-based eco-friendly and efficient extraction of flavonoids from Selaginella moellendorffii: Process optimization, composition identification and biological activity. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2021.120203] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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Li G, Lei J, Li S, Jiang Y, Zhang F, Song C, Xiao S, Fu S, Zhou J, Wu F, Wang G. Extraction of flavonoids from Citri Reticulatae Pericarpium Viride using a deep eutectic solvent. RSC Adv 2022; 12:26975-26988. [PMID: 36275141 PMCID: PMC9490517 DOI: 10.1039/d2ra04276b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2022] [Accepted: 09/12/2022] [Indexed: 11/22/2022] Open
Abstract
Flavonoids are the main active ingredient in Citri Reticulatae Pericarpium Viride (CRPV). In this study, a deep eutectic solvent (DES) was explored to extract the main flavonoids from CRPV, including narirutin (NAR) and hesperidin (HES). A total of 30 DESs were prepared, and DES-20 (proline : urea) was selected as the optimal solvent. According to the single factor and response surface methodology experiments, the optimal extraction conditions for the flavonoids included a molar ratio of 1 : 2, water content of 30%, extraction time of 28 min, extraction power of 240 W, and a liquid-to-solid ratio of 70 mL g−1 and the optimal extraction yields of NAR and HES were 21 ± 2 mg g−1 and 60 ± 2 mg g−1, respectively. The recovery rate of NAR and HES with macroporous resin SP825 were 88 ± 3% and 86 ± 4%, respectively. Compared with traditional extraction methods, this novel method greatly improved extraction efficiency and saved time. Scanning electron microscopy results showed that this novel method could destroy the plant cell wall to enhance the extraction efficiency. Then, 21 flavonoids were identified through an ultra-high-performance liquid chromatography-quadrupole time-of-flight mass spectrometry (UPLC-Q-TOF-MS) technique and nine of them were discovered for the first time in CRPV extracts. Furthermore, a high-performance liquid chromatography (HPLC) method was simultaneously used to determine NAR and HES in CRPV extracts upon methodological validation. Finally, antioxidant and cytotoxic experiments in vitro showed that the flavonoids extracted from the CRPV exhibited certain antioxidant and cytotoxic activities. The above results indicated that the DES was a green solvent, which can effectively extract NAR and HES from CRPV. Flavonoids are the main active ingredient in Citri Reticulatae Pericarpium Viride (CRPV).![]()
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Affiliation(s)
- Gang Li
- School of Pharmacy, Zunyi Medical University, Zunyi 563000, Guizhou, China
| | - Jie Lei
- School of Pharmacy, Zunyi Medical University, Zunyi 563000, Guizhou, China
| | - Sihui Li
- School of Pharmacy, Zunyi Medical University, Zunyi 563000, Guizhou, China
| | - Yongmei Jiang
- School of Pharmacy, Zunyi Medical University, Zunyi 563000, Guizhou, China
| | - Feng Zhang
- School of Pharmacy, Zunyi Medical University, Zunyi 563000, Guizhou, China
| | - Changwei Song
- School of Pharmacy, Zunyi Medical University, Zunyi 563000, Guizhou, China
| | - Shiji Xiao
- School of Pharmacy, Zunyi Medical University, Zunyi 563000, Guizhou, China
| | - Shaobin Fu
- School of Pharmacy, Zunyi Medical University, Zunyi 563000, Guizhou, China
| | - Jinquan Zhou
- School of Pharmacy, Zunyi Medical University, Zunyi 563000, Guizhou, China
| | - Faming Wu
- School of Pharmacy, Zunyi Medical University, Zunyi 563000, Guizhou, China
| | - Gang Wang
- School of Pharmacy, Zunyi Medical University, Zunyi 563000, Guizhou, China
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Lei J, Zhu L, Zheng Y, Yu M, Li G, Zhang F, Linghu L, Yu J, Luo Y, Luo X, Gang W, Qin C. Homogenate-Ultrasound-Assisted Ionic Liquid Extraction of Total Flavonoids from Selaginella involven: Process Optimization, Composition Identification, and Antioxidant Activity. ACS OMEGA 2021; 6:14327-14340. [PMID: 34124456 PMCID: PMC8190928 DOI: 10.1021/acsomega.1c01087] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2021] [Accepted: 05/14/2021] [Indexed: 05/17/2023]
Abstract
In this paper, an efficient approach to extract total flavonoids (TFs) from Selaginella involvens (Sw.) Spring using homogenate-ultrasound-assisted ionic liquid (IL) extraction (HUA-ILE) was first developed. The results indicated that EPyBF4 was selected as the suitable extractant. According to the single factor experiment and response surface methodology, the IL concentration of 0.10 mol/L, the extraction time of 160 s, the liquid/solid ratio of 13:1 mL/g, and the extraction power of 300 W were concluded as the best conditions. A yield of 8.48 ± 0.27 mg/g TF content was obtained. Compared with HUA ethanol extraction, ultrasound-assisted IL extraction, and percolation extraction, the TF content obtained by the HUA-ILE method could be increased by 2 to 4 times, and the extraction time could be reduced by 100 times. Furthermore, 16 compounds of the TF extract were finally identified through ultra-performance liquid chromatography quadrupole time-of-flight tandem mass spectrometry, among which 11 compounds were first discovered in S. involven. The contents of six biflavonoids in S. involven were determined simultaneously adopting high-performance liquid chromatography, including amentoflavone, hinokiflavone, bilobetin, ginkgetin, isoginkgetin, and heveaflavone. The TF extract in S. involven was proved to have potent antioxidant activity through the four antioxidant experiments. In conclusion, HUA-ILE was applied for the first time to exploit a green, efficient, and novel approach to extract TFs, and the research also provided promising prospects for applications of S. involven.
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Affiliation(s)
- Jie Lei
- School
of Pharmacy, Zunyi Medical University, Zunyi 563003, Guizhou, China
| | - Lei Zhu
- School
of Pharmacy, Zunyi Medical University, Zunyi 563003, Guizhou, China
| | - Yu Zheng
- Modern
Agriculture Department, Zunyi Vocational
and Technical College, Zunyi 563006, Guizhou, China
| | - Ming Yu
- School
of Pharmacy, Zunyi Medical University, Zunyi 563003, Guizhou, China
| | - Gang Li
- School
of Pharmacy, Zunyi Medical University, Zunyi 563003, Guizhou, China
| | - Feng Zhang
- School
of Pharmacy, Zunyi Medical University, Zunyi 563003, Guizhou, China
| | - Lang Linghu
- School
of Pharmacy, Zunyi Medical University, Zunyi 563003, Guizhou, China
| | - Jiaqi Yu
- The
Third Affiliated Hospital of Zunyi Medical University, Zunyi 563000, Guizhou, China
| | - Yong Luo
- Modern
Agriculture Department, Zunyi Vocational
and Technical College, Zunyi 563006, Guizhou, China
| | - Xirong Luo
- Modern
Agriculture Department, Zunyi Vocational
and Technical College, Zunyi 563006, Guizhou, China
| | - Wang Gang
- School
of Pharmacy, Zunyi Medical University, Zunyi 563003, Guizhou, China
| | - Cheng Qin
- Modern
Agriculture Department, Zunyi Vocational
and Technical College, Zunyi 563006, Guizhou, China
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Xiang JY, Chi YY, Han JX, Xiang H, Xie Q. The Toxicity and Attenuation Methods of Toxic Chinese Materia Medica for its Reasonable Application: A Review. THE AMERICAN JOURNAL OF CHINESE MEDICINE 2021; 49:41-67. [PMID: 33416023 DOI: 10.1142/s0192415x21500038] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Over a millennia, traditional Chinese medicine (TCM) has been used to treat various diseases in China. In recent years, more and more Chinese materia medica (CMM) have been studied in scientific research projects, applied in clinical practice, and their extracts have even appeared in some health products. However, the toxicity of some CMM is often overlooked, including hepatotoxicity, nephrotoxicity, neurotoxicity, cardiotoxicity, etc. In this review, the toxic components and their toxicological mechanisms of some toxic CMM were listed according to the chemical structure classification of toxic components. Afterwards, the traditional methods (processing and compatibility) and modern methods (structural modification, biotransformation, etc.) of attenuation of CMM were discussed. Since ancient times, it has been said that "fight fire with fire, fight poison with poison," and toxic CMM are of great significance in the treatment of difficult and severe diseases. The rational application of toxic CMM and their components in clinical practice was also exemplified in this review. While the pharmacological effects of TCMs have been emphasized, the scientific attenuation and rational application of toxic components should be concerned. We hope this review can provide a reference for future related research.
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Affiliation(s)
- Jun-Yan Xiang
- School of Life Sciences, Jilin University, Changchun, Jilin 130012, P. R. China
| | - Yan-Yu Chi
- School of Life Sciences, Jilin University, Changchun, Jilin 130012, P. R. China
| | - Jin-Xin Han
- School of Life Sciences, Jilin University, Changchun, Jilin 130012, P. R. China
| | - Hongyu Xiang
- Key Laboratory for Molecular Enzymology and Engineering of Ministry of Education, School of Life Sciences, Jilin University, Changchun, Jilin 130012, People's Republic of China.,National Engineering Laboratory for AIDS Vaccine, School of Life Sciences, Jilin University, Changchun, Jilin 130012, P. R. China.,School of Life Sciences, Jilin University, Changchun, Jilin 130012, P. R. China
| | - Qiuhong Xie
- Key Laboratory for Molecular Enzymology and Engineering of Ministry of Education, School of Life Sciences, Jilin University, Changchun, Jilin 130012, People's Republic of China.,National Engineering Laboratory for AIDS Vaccine, School of Life Sciences, Jilin University, Changchun, Jilin 130012, P. R. China.,School of Life Sciences, Jilin University, Changchun, Jilin 130012, P. R. China
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Jiang Y, Wang S, Yu M, Wu D, Lei J, Li W, He Y, Gang W. Ultrasonic-Assisted Ionic Liquid Extraction of Two Biflavonoids from Selaginella tamariscina. ACS OMEGA 2020; 5:33113-33124. [PMID: 33403273 PMCID: PMC7774283 DOI: 10.1021/acsomega.0c04723] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/26/2020] [Accepted: 12/01/2020] [Indexed: 05/09/2023]
Abstract
Selaginella tamariscina, a traditional Chinese medicine, contains a variety of bioactive components, among which biflavonoids are the main active ingredients and have antioxidant, antitumor, and anti-inflammatory properties. In this study, ultrasonic-assisted ionic liquid extraction (UAILE) is used for the first time to extract two main biflavonoids (amentoflavone (AME) and hinokiflavone (HIN)) from S. tamariscina. A high-performance liquid chromatography method is used for the simultaneous determination of AME and HIN in S. tamariscina. Then, three novel ILs are synthesized for the first time by a one-step method using benzoxazole and three acids or acid salts as raw materials, and the structures of the synthesized ILs are characterized by elemental analysis, infrared spectroscopy, and NMR spectroscopy, as well as the thermal stability of the ILs is evaluated by thermogravimetric analysis. After screening the extraction effects of three benzoxazole ILs, three pyridine ILs, and three imidazole ILs, it is found that [Bpy]BF4 is the best and therefore selected as the extractant. The optimal extraction process is explored in terms of the yields of AME and HIN from S. tamariscina by a single-factor experiments and response surface analysis. Under the optimal level of each influencing factor (IL concentration of 0.15 mol/L, solid-liquid ratio of 1:12 g/mL, ultrasonic power of 280 W, ultrasonic time of 30 min, and three extraction cycles), the extraction rates of AME and HIN from S. tamariscina are 13.51 and 6.74 mg/g, respectively. Moreover, the recovery experiment of [Bpy]BF4 on the extraction of biflavonoids shows that the recovered IL can repeatedly extract targets six times and the extraction rate is about 90%, which indicates that the IL can be effectively reused. UAILE can effectively and selectively extract AME and HIN, laying the foundation for the application of S. tamariscina.
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Affiliation(s)
- Yongmei Jiang
- School of Pharmacy, Zunyi Medical University, Zunyi, Guizhou 563003, China
| | - Sen Wang
- School of Pharmacy, Zunyi Medical University, Zunyi, Guizhou 563003, China
| | - Ming Yu
- School of Pharmacy, Zunyi Medical University, Zunyi, Guizhou 563003, China
| | - Di Wu
- School of Pharmacy, Zunyi Medical University, Zunyi, Guizhou 563003, China
| | - Jie Lei
- School of Pharmacy, Zunyi Medical University, Zunyi, Guizhou 563003, China
| | - Weiwei Li
- School of Pharmacy, Zunyi Medical University, Zunyi, Guizhou 563003, China
| | - Yuqi He
- School of Pharmacy, Zunyi Medical University, Zunyi, Guizhou 563003, China
| | - Wang Gang
- School of Pharmacy, Zunyi Medical University, Zunyi, Guizhou 563003, China
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Comparison of Chemical Composition and Biological Activities of Eight Selaginella Species. Pharmaceuticals (Basel) 2020; 14:ph14010016. [PMID: 33375355 PMCID: PMC7823444 DOI: 10.3390/ph14010016] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2020] [Revised: 12/22/2020] [Accepted: 12/23/2020] [Indexed: 12/19/2022] Open
Abstract
Selaginella P. Beauv. is a group of vascular plants in the family Selaginellaceae Willk., found worldwide and numbering more than 700 species, with some used as foods and medicines. The aim of this paper was to compare methanolic (MeOH) and dichloromethane (DCM) extracts of eight Selaginella species on the basis of their composition and biological activities. Six of these Selaginella species are underinvestigated. Using ultra-high performance liquid chromatography-high-resolution mass spectrometry (UHPLC-HRMS) analysis, we identified a total of 193 compounds among the tested Selaginella species, with flavonoids predominating. MeOH extracts recovered more constituents that were detected, including selaginellins, the occurrence of which is only typical for this plant genus. Of all the tested species, Selaginella
apoda contained the highest number of identified selaginellins. The majority of the compounds were identified in S. apoda, the fewest compounds in Selaginella
cupressina. All the tested species demonstrated antioxidant activity using oxygen radical absorption capacity (ORAC) assay, which showed that MeOH extracts had higher antioxidant capacity, with the half maximal effective concentration (EC50) ranging from 12 ± 1 (Selaginella
myosuroides) to 124 ± 2 (Selaginella
cupressina) mg/L. The antioxidant capacity was presumed to be correlated with the content of flavonoids, (neo)lignans, and selaginellins. Inhibition of acetylcholinesterase (AChE) was mostly discerned in DCM extracts and was only exhibited in S. myosuroides, S. cupressina, Selaginella
biformis, and S. apoda extracts with the half maximal inhibitory concentration (IC50) in the range of 19 ± 3 to 62 ± 1 mg/L. Substantial cytotoxicity against cancer cell lines was demonstrated by the MeOH extract of S. apoda, where the ratio of the IC50 HEK (human embryonic kidney) to IC50 HepG2 (hepatocellular carcinoma) was 7.9 ± 0.2. MeOH extracts inhibited the production of nitrate oxide and cytokines in a dose-dependent manner. Notably, S. biformis halved the production of NO, tumor necrosis factor (TNF)-α, and interleukin (IL)-6 at the following concentrations: 105 ± 9, 11 ± 1, and 10 ± 1 mg/L, respectively. Our data confirmed that extracts from Selaginella species exhibited cytotoxicity against cancer cell lines and AChE inhibition. The activity observed in S. apoda was the most promising and is worth further exploration.
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Environmentally Friendly Methods for Flavonoid Extraction from Plant Material: Impact of Their Operating Conditions on Yield and Antioxidant Properties. ScientificWorldJournal 2020; 2020:6792069. [PMID: 32908461 PMCID: PMC7474796 DOI: 10.1155/2020/6792069] [Citation(s) in RCA: 56] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2020] [Revised: 06/20/2020] [Accepted: 07/27/2020] [Indexed: 01/27/2023] Open
Abstract
The flavonoids are compounds synthesized by plants, and they have properties such as antioxidant, anticancer, anti-inflammatory, and antibacterial, among others. One of the most important bioactive properties of flavonoids is their antioxidant effect. Synthetic antioxidants have side toxic effects whilst natural antioxidants, such as flavonoids from natural sources, have relatively low toxicity. Therefore, it is important to incorporate flavonoids derived from natural sources in several products such as foods, cosmetics, and drugs. For this reason, there is currently a need to extract flavonoids from plant resources. In this review are described the most important parameters involved in the extraction of flavonoids by unconventional methods such as ultrasound, pressurized liquid extraction, mechanochemical, high hydrostatic pressure, supercritical fluid, negative pressure cavitation, intensification of vaporization by decompression to the vacuum, microwave, infrared, pulsed electric field, high-voltage electrical discharges, and enzyme-assisted extraction. There are no unified operation conditions to achieve high yields and purity. Notwithstanding, progress has been achieved in the development of more advanced and environmentally friendly methods of extraction. Although in literature are found important advances, a complete understanding of the extraction process in each of the unconventional techniques is needed to determine the thermodynamic and kinetic mechanisms that govern each of the techniques.
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Li Y, Hsieh Y, Pan Z, Zhang L, Yu W, Wang B, Zhang J. Extraction of Alkaloids from Coptidis Rhizoma via Betaine‐Based Deep Eutectic Solvents. ChemistrySelect 2020. [DOI: 10.1002/slct.202000865] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Yuanbin Li
- State Key Laboratory of Advanced Welding and JoiningHarbin Institute of Technology Shenzhen 518055 China
- Research Centre of Printed Flexible ElectronicsSchool of Materials Science and Engineering, Harbin Institute of Technology Shenzhen 518055 China
| | - Yun‐Hao Hsieh
- State Key Laboratory of Advanced Welding and JoiningHarbin Institute of Technology Shenzhen 518055 China
- Research Centre of Printed Flexible ElectronicsSchool of Materials Science and Engineering, Harbin Institute of Technology Shenzhen 518055 China
| | - Zuchen Pan
- State Key Laboratory of Advanced Welding and JoiningHarbin Institute of Technology Shenzhen 518055 China
- Research Centre of Printed Flexible ElectronicsSchool of Materials Science and Engineering, Harbin Institute of Technology Shenzhen 518055 China
| | - Ling Zhang
- School of ScienceHarbin Institute of Technology Shenzhen 518055 China
| | - Wen Yu
- State Key Laboratory of Advanced Welding and JoiningHarbin Institute of Technology Shenzhen 518055 China
- Research Centre of Printed Flexible ElectronicsSchool of Materials Science and Engineering, Harbin Institute of Technology Shenzhen 518055 China
| | - Binshen Wang
- State Key Laboratory of Advanced Welding and JoiningHarbin Institute of Technology Shenzhen 518055 China
- Research Centre of Printed Flexible ElectronicsSchool of Materials Science and Engineering, Harbin Institute of Technology Shenzhen 518055 China
- Department of Chemistry and BiotechnologyYokohama National University 79-5 Tokiwadai, Hodogaya-ku Yokohama 240-8501 Japan
| | - Jiaheng Zhang
- State Key Laboratory of Advanced Welding and JoiningHarbin Institute of Technology Shenzhen 518055 China
- Research Centre of Printed Flexible ElectronicsSchool of Materials Science and Engineering, Harbin Institute of Technology Shenzhen 518055 China
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Ionic Liquid-Microwave-Based Extraction of Biflavonoids from Selaginella sinensis. Molecules 2019; 24:molecules24132507. [PMID: 31324010 PMCID: PMC6651632 DOI: 10.3390/molecules24132507] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2019] [Revised: 07/05/2019] [Accepted: 07/06/2019] [Indexed: 01/12/2023] Open
Abstract
Selaginella sinensis (Desv.) Spring has been used for many years as traditional Chinese medicine (TCM) for many years. Recently, ionic liquids (ILs) have attracted great attentions in extraction and separation technology of TCM as a new green solvent. In this paper, microwave assisted extraction-IL (MAE-IL) that extracted amentoflavone (AME) and hinokiflavone (HIN) from Selaginella sinensis was reported for the first time. The contents of two biflavonoids were simultaneously determined by a high performance liquid chromatography (HPLC) method. After different ionic liquids were compared, it was found [C6mim]BF4 had a high selectivity and efficiency. Moreover, the important extraction conditions, including solid-liquid ratio, IL concentration, extraction time, microwave power and radiation temperature, were also investigated and optimized by response surface methodology (RSM) using AME and HIN yields as index. The results showed that the extraction yields of AME and HIN from S. sinensis were 1.96 mg/g and 0.79 mg/g, respectively, under the optimal process parameters (0.55 mmol/L, 300 W, 40 min, 1:11 g/mL and 48 °C). Compared with the conventional extraction methods, MAE-IL could not only achieve higher yield in shorter time, but also could reduce the consumption of solvent. This effective, rapid and green MAE-IL method was suitable for the extraction of AME and HIN.
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Alguacil FJ. Facilitated Chromium(VI) Transport across an Ionic Liquid Membrane Impregnated with Cyphos IL102. Molecules 2019; 24:molecules24132437. [PMID: 31269725 PMCID: PMC6650877 DOI: 10.3390/molecules24132437] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2019] [Revised: 06/26/2019] [Accepted: 07/01/2019] [Indexed: 12/26/2022] Open
Abstract
Chromium(VI) is a well-known hazardous element, thus, its removal from aqueous sources is of a general concern. Among the technologies used for the removal of this type of toxic elements, liquid membranes are gaining in importance and the same has occurred with the use of ionic liquids, considered for many, due to their properties, as green solvents. Thus, the present work joined the three previous points, presenting an experimental study about the removal of chromium(VI) by the use of a liquid membrane operation which used the commercially available Cyphos IL102 ionic liquid as a carrier. The experimental variables included: the stirring speed applied to the feed and receiving solution (a key-parameter to gain maximum transport), acid, chromium(VI), sodium hydroxide and Cyphos IL102 concentrations in their various phases. Additionally, the performance of the present system was evaluated both against the presence of other metals in solution and other carriers. The experimental results confirmed that Cyphos IL102 is a good carrier for chromium(VI) transport and, thus, its removal from aqueous streams, and it also performed well in the presence of accompanying metals and against the performance of other commercially available carriers.
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Affiliation(s)
- Francisco Jose Alguacil
- Centro Nacional de Investigaciones Metalurgicas (CSIC), Avda. Gregorio del Amo 8, 28040 Madrid, Spain.
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