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Qi LX, Wang XT, Huang JP, Yue TY, Lu YS, San DM, Xu YX, Han YT, Guo XY, Xie WD, Zhou YX. Silver Nanoparticles Encapped by Dihydromyricetin: Optimization of Green Synthesis, Characterization, Toxicity, and Anti-MRSA Infection Activities for Zebrafish ( Danio rerio). Int J Mol Sci 2024; 25:5255. [PMID: 38791295 PMCID: PMC11120860 DOI: 10.3390/ijms25105255] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2024] [Revised: 05/02/2024] [Accepted: 05/03/2024] [Indexed: 05/26/2024] Open
Abstract
To achieve the environmentally friendly and rapid green synthesis of efficient and stable AgNPs for drug-resistant bacterial infection, this study optimized the green synthesis process of silver nanoparticles (AgNPs) using Dihydromyricetin (DMY). Then, we assessed the impact of AgNPs on zebrafish embryo development, as well as their therapeutic efficacy on zebrafish infected with Methicillin-resistant Staphylococcus aureus (MRSA). Transmission electron microscopy (TEM) and dynamic light-scattering (DLS) analyses revealed that AgNPs possessed an average size of 23.6 nm, a polymer dispersity index (PDI) of 0.197 ± 0.0196, and a zeta potential of -18.1 ± 1.18 mV. Compared to other published green synthesis products, the optimized DMY-AgNPs exhibited smaller sizes, narrower size distributions, and enhanced stability. Furthermore, the minimum concentration of DMY-AgNPs required to affect zebrafish hatching and survival was determined to be 25.0 μg/mL, indicating the low toxicity of DMY-AgNPs. Following a 5-day feeding regimen with DMY-AgNP-containing food, significant improvements were observed in the recovery of the gills, intestines, and livers in MRSA-infected zebrafish. These results suggested that optimized DMY-AgNPs hold promise for application in aquacultures and offer potential for further clinical use against drug-resistant bacteria.
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Affiliation(s)
- Ling-Xiao Qi
- Marine College, Shandong University, Weihai 264209, China; (L.-X.Q.); (X.-T.W.); (J.-P.H.); (T.-Y.Y.); (Y.-S.L.); (D.-M.S.); (Y.-X.X.); (Y.-T.H.); (X.-Y.G.)
- SDU-ANU Joint Science College, Shandong University, Weihai 264209, China
| | - Xue-Ting Wang
- Marine College, Shandong University, Weihai 264209, China; (L.-X.Q.); (X.-T.W.); (J.-P.H.); (T.-Y.Y.); (Y.-S.L.); (D.-M.S.); (Y.-X.X.); (Y.-T.H.); (X.-Y.G.)
| | - Jin-Ping Huang
- Marine College, Shandong University, Weihai 264209, China; (L.-X.Q.); (X.-T.W.); (J.-P.H.); (T.-Y.Y.); (Y.-S.L.); (D.-M.S.); (Y.-X.X.); (Y.-T.H.); (X.-Y.G.)
| | - Ting-Yan Yue
- Marine College, Shandong University, Weihai 264209, China; (L.-X.Q.); (X.-T.W.); (J.-P.H.); (T.-Y.Y.); (Y.-S.L.); (D.-M.S.); (Y.-X.X.); (Y.-T.H.); (X.-Y.G.)
| | - Yun-Shu Lu
- Marine College, Shandong University, Weihai 264209, China; (L.-X.Q.); (X.-T.W.); (J.-P.H.); (T.-Y.Y.); (Y.-S.L.); (D.-M.S.); (Y.-X.X.); (Y.-T.H.); (X.-Y.G.)
- SDU-ANU Joint Science College, Shandong University, Weihai 264209, China
| | - Dong-Mei San
- Marine College, Shandong University, Weihai 264209, China; (L.-X.Q.); (X.-T.W.); (J.-P.H.); (T.-Y.Y.); (Y.-S.L.); (D.-M.S.); (Y.-X.X.); (Y.-T.H.); (X.-Y.G.)
| | - Yu-Xun Xu
- Marine College, Shandong University, Weihai 264209, China; (L.-X.Q.); (X.-T.W.); (J.-P.H.); (T.-Y.Y.); (Y.-S.L.); (D.-M.S.); (Y.-X.X.); (Y.-T.H.); (X.-Y.G.)
- SDU-ANU Joint Science College, Shandong University, Weihai 264209, China
| | - Ya-Tong Han
- Marine College, Shandong University, Weihai 264209, China; (L.-X.Q.); (X.-T.W.); (J.-P.H.); (T.-Y.Y.); (Y.-S.L.); (D.-M.S.); (Y.-X.X.); (Y.-T.H.); (X.-Y.G.)
- SDU-ANU Joint Science College, Shandong University, Weihai 264209, China
| | - Xiang-Yi Guo
- Marine College, Shandong University, Weihai 264209, China; (L.-X.Q.); (X.-T.W.); (J.-P.H.); (T.-Y.Y.); (Y.-S.L.); (D.-M.S.); (Y.-X.X.); (Y.-T.H.); (X.-Y.G.)
- SDU-ANU Joint Science College, Shandong University, Weihai 264209, China
| | - Wei-Dong Xie
- Marine College, Shandong University, Weihai 264209, China; (L.-X.Q.); (X.-T.W.); (J.-P.H.); (T.-Y.Y.); (Y.-S.L.); (D.-M.S.); (Y.-X.X.); (Y.-T.H.); (X.-Y.G.)
| | - Yan-Xia Zhou
- Marine College, Shandong University, Weihai 264209, China; (L.-X.Q.); (X.-T.W.); (J.-P.H.); (T.-Y.Y.); (Y.-S.L.); (D.-M.S.); (Y.-X.X.); (Y.-T.H.); (X.-Y.G.)
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Huo D, Dai J, Yuan S, Cheng X, Pan Y, Wang L, Wang R. Eco-friendly simultaneous extraction of pectins and phenolics from passion fruit (Passiflora edulis Sims) peel: Process optimization, physicochemical properties, and antioxidant activity. Int J Biol Macromol 2023:125229. [PMID: 37301339 DOI: 10.1016/j.ijbiomac.2023.125229] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2023] [Revised: 05/25/2023] [Accepted: 06/03/2023] [Indexed: 06/12/2023]
Abstract
The objective of this study was to simultaneously extract passion fruit (Passiflora edulis) peel pectins and phenolics using deep eutectic solvents, to evaluate their physicochemical properties and antioxidant activity. By taking L-proline: citric acid (Pro-CA) as the optimal solvent, the effect of extraction parameters on the yields of extracted passion fruit peel pectins (PFPP) and total phenolic content (TPC) was. and the highest TPC (9.68 mg GAE/g DW) were attained under 90 °C, extraction solvent pH = 2, extraction time of 120 min and L/S ratio of 20 mL/g. In addition, Pro-CA-extracted pectins (Pro-CA-PFPP) and HCl-extracted pectins (HCl-PFPP) were subjected to high performance gel permeation chromatography (HPGPC), Fourier transform infrared spectroscopy (FT-IR), thermogram analysis (TG/DTG) and rheological measurements. Results verified that the Mw and thermal stability of Pro-CA-PFPP were higher than those of HCl-PFPP. The PFPP solutions featured a non-Newtonian behavior, and compared with commercially pectin solution, PFPP solution exhibited a stronger antioxidant activity. Additionally, passion fruit peel extract (PFPE) exhibited stronger antioxidant effects than PFPP. The results of ultra-performance liquid chromatography hybrid triple quadrupole-linear ion trap mass spectrometry (UPLC-Qtrap-MS) and high performance liquid chromatography (HPLC) analysis showed that (-)-epigallocatechin, gallic acid, epicatechin, kaempferol-3-O-rutin and myricetin were the main phenolic compounds in PFPE and PFPP. Our results suggest that Pro-CA can be considered as an eco-friendly solvent for high-efficient extraction of high-value compounds from agricultural by-products.
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Affiliation(s)
- Dongxue Huo
- School of Food Science and Engineering, Hainan University, Haikou 570228, PR China
| | - Jincheng Dai
- School of Food Science and Engineering, Hainan University, Haikou 570228, PR China
| | - Siyu Yuan
- School of Food Science and Engineering, Hainan University, Haikou 570228, PR China
| | - Xiaoqing Cheng
- School of Food Science and Engineering, Hainan University, Haikou 570228, PR China
| | - Yonggui Pan
- School of Food Science and Engineering, Hainan University, Haikou 570228, PR China
| | - Lu Wang
- School of Food Science and Engineering, Hainan University, Haikou 570228, PR China; Key Laboratory of Food Nutrition and Functional Food of Hainan Province, Hainan University, Haikou 570228, PR China.
| | - Ruimin Wang
- School of Food Science and Engineering, Hainan University, Haikou 570228, PR China; Key Laboratory of Food Nutrition and Functional Food of Hainan Province, Hainan University, Haikou 570228, PR China.
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Sysak S, Czarczynska-Goslinska B, Szyk P, Koczorowski T, Mlynarczyk DT, Szczolko W, Lesyk R, Goslinski T. Metal Nanoparticle-Flavonoid Connections: Synthesis, Physicochemical and Biological Properties, as Well as Potential Applications in Medicine. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:nano13091531. [PMID: 37177076 PMCID: PMC10180592 DOI: 10.3390/nano13091531] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2023] [Revised: 04/26/2023] [Accepted: 04/27/2023] [Indexed: 05/15/2023]
Abstract
Flavonoids are polyphenolic compounds widely occurring throughout the plant kingdom. They are biologically active and have many medical applications. Flavonoids reveal chemopreventive, anticarcinogenic, and antioxidant properties, as well as being able to modulate the immune system response and inhibit inflammation, angiogenesis, and metastasis. Polyphenols are also believed to reverse multidrug resistance via various mechanisms, induce apoptosis, and activate cell death signals in tumor cells by modulating cell signaling pathways. The main limitation to the broader usage of flavonoids is their low solubility, poor absorption, and rapid metabolism. To tackle this, the combining of flavonoids with nanocarriers could improve their bioavailability and create systems of wider functionalities. Recently, interest in hybrid materials based on combinations of metal nanoparticles with flavonoids has increased due to their unique physicochemical and biological properties, including improved selectivity toward target sites. In addition, flavonoids have further utilities, even in the initial step of preparation of metal nanomaterials. The review offers knowledge on multiple possibilities of the synthesis of flavonoid-metal nanoparticle conjugates, as well as presents some of their features such as size, shape, surface charge, and stability. The flavonoid-metal nanoparticles are also discussed regarding their biological properties and potential medical applications.
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Affiliation(s)
- Stepan Sysak
- Chair and Department of Chemical Technology of Drugs, Poznan University of Medical Sciences, Grunwaldzka 6, 60-780 Poznań, Poland
- Doctoral School, Poznan University of Medical Sciences, Bukowska 70, 60-812 Poznań, Poland
| | - Beata Czarczynska-Goslinska
- Chair and Department of Pharmaceutical Technology, Poznan University of Medical Sciences, Grunwaldzka 6, 60-780 Poznań, Poland
| | - Piotr Szyk
- Chair and Department of Chemical Technology of Drugs, Poznan University of Medical Sciences, Grunwaldzka 6, 60-780 Poznań, Poland
| | - Tomasz Koczorowski
- Chair and Department of Chemical Technology of Drugs, Poznan University of Medical Sciences, Grunwaldzka 6, 60-780 Poznań, Poland
| | - Dariusz T Mlynarczyk
- Chair and Department of Chemical Technology of Drugs, Poznan University of Medical Sciences, Grunwaldzka 6, 60-780 Poznań, Poland
| | - Wojciech Szczolko
- Chair and Department of Chemical Technology of Drugs, Poznan University of Medical Sciences, Grunwaldzka 6, 60-780 Poznań, Poland
| | - Roman Lesyk
- Department of Biotechnology and Cell Biology, Medical College, University of Information Technology and Management in Rzeszów, Sucharskiego 2, 35-225 Rzeszow, Poland
- Department of Pharmaceutical, Organic and Bioorganic Chemistry, Danylo Halytsky Lviv National Medical University, Pekarska 69, 79010 Lviv, Ukraine
| | - Tomasz Goslinski
- Chair and Department of Chemical Technology of Drugs, Poznan University of Medical Sciences, Grunwaldzka 6, 60-780 Poznań, Poland
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Zhang R, Shi H, Li S, Zhang H, Zhang D, Wu A, Zhang C, Li C, Fu X, Chen S, Shi J, Tian Y, Wang S, Wang Y, Liu H. A double-layered gastric floating tablet for zero-order controlled release of dihydromyricetin: Design, development, and in vitro/in vivo evaluation. Int J Pharm 2023; 638:122929. [PMID: 37028570 DOI: 10.1016/j.ijpharm.2023.122929] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2022] [Revised: 03/26/2023] [Accepted: 04/01/2023] [Indexed: 04/07/2023]
Abstract
Dihydromyricetin (DHM) is an important natural flavonoid. However, most of DHM preparations have shown shortcomings such as low drug loading, poor drug stability, and/or large fluctuations in blood concentration. This study aimed to develop a gastric floating tablet with a double-layered structure for zero-order controlled release of DHM (DHM@GF-DLT). The final product DHM@GF-DLT showed a high average cumulative drug release at 24 h that best fit the zero-order model, and had a good floating ability in the stomach of the rabbit with a gastric retention time of over 24 h. The FTIR, DSC, and XRPD analyses indicated the good compatibility among the drug and the excipients in DHM@GF-DLT. The pharmacokinetic study revealed that DHM@GF-DLT could prolong the retention time of DHM, reduce the fluctuation of blood drug concentration, and enhance the bioavailability of DHM. The pharmacodynamic studies demonstrated that DHM@GF-DLT had a potent and long-term therapeutic effect on systemic inflammation in rabbits. Therefore, DHM@GF-DLT had the potential to serve as a promising anti-inflammatory agent and may develop into a once-a-day preparation, which was favorable to maintain a steady blood drug concentration and a long-term drug efficacy. Our research provided a promising development strategy for DHM and other natural products with a similar structure to DHM for improving their bioavailability and therapeutic effect.
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Affiliation(s)
- Ruirui Zhang
- School of Pharmacy, Southwest Medical University, Luzhou City, Sichuan, PR China
| | - Houyin Shi
- Department of Orthopedics, The Affiliated Traditional Chinese Medicine Hospital of Southwest Medical University, Luzhou City, Sichuan, PR China
| | - Sifang Li
- School of Pharmacy, Southwest Medical University, Luzhou City, Sichuan, PR China
| | - Hao Zhang
- School of Pharmacy, Southwest Medical University, Luzhou City, Sichuan, PR China
| | - Dan Zhang
- School of Pharmacy, Southwest Medical University, Luzhou City, Sichuan, PR China
| | - Ailing Wu
- Department of Anesthesiology, The First People's Hospital of Neijiang, Neijiang, Sichuan, PR China
| | - Chun Zhang
- School of Pharmacy, Southwest Medical University, Luzhou City, Sichuan, PR China
| | - Chunhong Li
- School of Pharmacy, Southwest Medical University, Luzhou City, Sichuan, PR China
| | - Xiujuan Fu
- School of Pharmacy, Southwest Medical University, Luzhou City, Sichuan, PR China
| | - Siwei Chen
- School of Pharmacy, Southwest Medical University, Luzhou City, Sichuan, PR China
| | - Jiaoyue Shi
- School of Pharmacy, Southwest Medical University, Luzhou City, Sichuan, PR China
| | - Yang Tian
- School of Pharmacy, Southwest Medical University, Luzhou City, Sichuan, PR China
| | - Sihan Wang
- School of Pharmacy, Southwest Medical University, Luzhou City, Sichuan, PR China
| | - Yu Wang
- School of Pharmacy, Southwest Medical University, Luzhou City, Sichuan, PR China
| | - Hao Liu
- School of Pharmacy, Southwest Medical University, Luzhou City, Sichuan, PR China.
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Synthesis of Silver Nano Particles Using Myricetin and the In-Vitro Assessment of Anti-Colorectal Cancer Activity: In-Silico Integration. Int J Mol Sci 2022; 23:ijms231911024. [PMID: 36232319 PMCID: PMC9570303 DOI: 10.3390/ijms231911024] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2022] [Revised: 08/29/2022] [Accepted: 09/15/2022] [Indexed: 12/24/2022] Open
Abstract
The creation of novel anticancer treatments for a variety of human illnesses, including different malignancies and dangerous microbes, also potentially depends on nanoparticles including silver. Recently, it has been successful to biologically synthesize metal nanoparticles using plant extracts. The natural flavonoid 3,3′, 4′, 5,5′, and 7 hexahydroxyflavon (myricetin) has anticancer properties. There is not much known about the regulatory effects of myricetin on the possible cell fate-determination mechanisms (such as apoptosis/proliferation) in colorectal cancer. Because the majority of investigations related to the anticancer activity of myricetin have dominantly focused on the enhancement of tumor cell uncontrolled growth (i.e., apoptosis). Thus, we have decided to explore the potential myricetin interactors and the associated biological functions by using an in-silico approach. Then, we focused on the main goal of the work which involved the synthesis of silver nanoparticles and the labeling of myricetin with it. The synthesized silver nanoparticles were examined using UV-visible spectroscopy, dynamic light scattering spectroscopy, Fourier transform infrared spectroscopy, and scanning electron microscopy. In this study, we have investigated the effects of myricetin on colorectal cancer where numerous techniques were used to show myricetin’s effect on colon cancer cells. Transmission Electron Microscopy was employed to monitor morphological changes. Furthermore, we have combined the results of the colorectal cancer gene expression dataset with those of the myricetin interactors and pathways. Based on the results, we conclude that myricetin is able to efficiently kill human colorectal cancer cell lines. Since, it shares important biological roles and possible route components and this myricetin may be a promising herbal treatment for colorectal cancer as per an in-silico analysis of the TCGA dataset.
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Apocynin loaded silver nanoparticles displays potent in vitro biological activities and mitigates pyrogallol-induced hepatotoxicity. Chem Biol Interact 2022; 365:110069. [DOI: 10.1016/j.cbi.2022.110069] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Revised: 07/19/2022] [Accepted: 07/20/2022] [Indexed: 01/24/2023]
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Biosynthesis of silver nanoparticle composites based on hesperidin and pectin and their synergistic antibacterial mechanism. Int J Biol Macromol 2022; 214:220-229. [PMID: 35714865 DOI: 10.1016/j.ijbiomac.2022.06.048] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Revised: 05/30/2022] [Accepted: 06/08/2022] [Indexed: 01/25/2023]
Abstract
Silver nanoparticles (AgNPs) were widely used in the antibacterial field because of their excellent antibacterial properties. In this study, we used hesperidin and pectin as reductants and stabilizers, and prepared uniform and stable Hesperidin-Pectin AgNPs (HP-AgNPs) by a simple microwave-assisted process. Increasing the proportion of hesperidin, P-AgNPs, HP-AgNPs1, HP-AgNPs2 and H-AgNPs were obtained respectively. With the increase of hesperidin ratio, the mean particle size and zeta potential increased gradually. Fourier transform infrared spectroscopy (FTIR) analysis showed that Ag+ was reduced by hesperidin and pectin. Antibacterial tests showed that HP-AgNPs2 showed the MIC values of 66.7 μg/mL against E. coli. In addition, HP-AgNPs2 was selected to clarify its antibacterial mechanism against E. coli. Morphological experiments showed that HP-AgNPs2 stress caused damage to the cell wall of E. coli, as well as leakage of its contents and an increase in reactive oxygen species (ROS). On the other hand, the release of Ag+ during cell co-culture was studied and the results showed that most of the Ag+ released was taken up by E. coli. The synergistic effect of hesperidin and pectin resulted in a significant enhancement of the antibacterial properties of AgNPs. These preliminary data suggest that HP-AgNPs has good antibacterial activity and may be developed as an effective antibacterial nanomaterial.
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Wang Y, Wang J, Xiang H, Ding P, Wu T, Ji G. Recent update on application of dihydromyricetin in metabolic related diseases. Biomed Pharmacother 2022; 148:112771. [PMID: 35247719 DOI: 10.1016/j.biopha.2022.112771] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Revised: 02/22/2022] [Accepted: 02/27/2022] [Indexed: 11/02/2022] Open
Abstract
As a new type of natural flavonoids, dihydromyricetin (DMY) has attracted more and more attention. It has a series of pharmacological effects, such as anti-inflammatory, anti-tumor, anti-oxidation, antibacterial and so on, and it is almost no toxicity and with excellent safety. Therefore, even if the bioavailability is poor, it is often added to daily food, beverages and even medicines. In recent years, some researchers have found that DMY can treat some diseases by anti-oxidation, anti-inflammation, promoting cell death and regulate the activity of lipid and glucose metabolism. In addition, the mechanism of DMY on these diseases was also related to the signal pathway of AMPK, PI3K/Akt, PPAR and the participation of microRNAs. This review describes the mechanism of DMY in metabolic related diseases from three aspects: metabolic diseases, liver diseases, and cancers, hoping to provide some new ideas for clinical researches.
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Affiliation(s)
- Yirong Wang
- Institute of Digestive Disease, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200032, China; Institute of Interdisciplinary Integrative Medicine Research, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China.
| | - Junmin Wang
- Institute of Interdisciplinary Integrative Medicine Research, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China.
| | - Hongjiao Xiang
- Institute of Interdisciplinary Integrative Medicine Research, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China.
| | - Peilun Ding
- Institute of Interdisciplinary Integrative Medicine Research, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China.
| | - Tao Wu
- Institute of Interdisciplinary Integrative Medicine Research, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China.
| | - Guang Ji
- Institute of Digestive Disease, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200032, China.
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Zhang Y, Li Z, Meng S, Dong A, Yang YW. Silver nanoparticles modified by water-soluble leaning tower[6]arenes for sensing and catalysis. Chem Commun (Camb) 2022; 58:649-652. [PMID: 34913937 DOI: 10.1039/d1cc06079a] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
A carboxylated leaning tower[6]arene sodium salt is used as an efficient stabiliser for the one-pot synthesis of silver nanoparticles. The resulting hybrid material with good dispersion, excellent stability and narrow size distribution could serve as a multifunctional platform for sensing and catalysis applications.
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Affiliation(s)
- Yinan Zhang
- International Joint Research Laboratory of Nano-Micro Architecture Chemistry, College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, P. R. China.
| | - Zheng Li
- International Joint Research Laboratory of Nano-Micro Architecture Chemistry, College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, P. R. China.
| | - Suriguga Meng
- College of Chemistry and Chemical Engineering Engineering Research Center of Dairy Quality and Safety Control Technology Ministry of Education Inner Mongolia University, Hohhot 010021, P. R. China
| | - Alideertu Dong
- College of Chemistry and Chemical Engineering Engineering Research Center of Dairy Quality and Safety Control Technology Ministry of Education Inner Mongolia University, Hohhot 010021, P. R. China
| | - Ying-Wei Yang
- International Joint Research Laboratory of Nano-Micro Architecture Chemistry, College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, P. R. China.
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Antibacterial, Antifungal, and Antioxidant Activities of Silver Nanoparticles Biosynthesized from Bauhinia tomentosa Linn. Antioxidants (Basel) 2021; 10:antiox10121959. [PMID: 34943062 PMCID: PMC8749995 DOI: 10.3390/antiox10121959] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Revised: 12/04/2021] [Accepted: 12/05/2021] [Indexed: 01/03/2023] Open
Abstract
The biogenic synthesis of silver nanoparticles (AgNPs) has a wide range of applications in the pharmaceutical industry. Here, we synthesized AgNPs using the aqueous flower extract of Bauhinia tomentosa Linn. Formation of AgNPs was observed using ultraviolet-visible light spectrophotometry at different time intervals. Maximum absorption was observed after 4 h at 420 nm due to the reduction of Ag+ to Ag0. The stabilizing activity of functional groups was identified by Fourier-transform infrared spectroscopy. Size and surface morphology were also analyzed using scanning electron microscopy. The present study revealed the AgNPs were spherical in form with a diameter of 32 nm. The face-centered cubic structure of AgNPs was indexed using X-ray powder diffraction with peaks at 2θ = 37°, 49°, 63°, and 76° (corresponding to the planes of silver 111, 200, 220, 311), respectively. Energy-dispersive X-ray spectroscopy revealed that pure reduced silver (Ag0) was the major constituent (59.08%). Antimicrobial analyses showed that the biosynthesized AgNPs possess increased antibacterial activity (against Staphylococcus aureus (Gram-positive) and Escherichia coli (Gram-negative), with larger zone formation against S. aureus (9.25 mm) compared with that of E. coli (6.75 mm)) and antifungal activity (against Aspergillus flavus and Candida albican (with superior inhibition against A. flavus (zone of inhibition: 7 mm) compared with C. albicans (zone of inhibition: 5.75 mm)). Inhibition of 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging activity was found to be dose-dependent with half-maximal inhibitory concentration (IC50) values of 56.77 μg/mL and 43.03 μg/mL for AgNPs and ascorbic acid (control), respectively, thus confirming that silver nanoparticles have greater antioxidant activity than ascorbic acid. Molecular docking was used to determine the mode of antimicrobial interaction of our biosynthesized B. tomentosa Linn flower-powder extract-derived AgNPs. The biogenic AgNPs preferred hydrophobic contacts to inhibit bacterial and fungal sustainability with reducing antioxidant properties, suggesting that biogenic AgNPs can serve as effective medicinal agents.
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