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Ezez D, Mekonnen N, Tefera M. Phytochemical analysis of Withania somnifera leaf extracts by GC-MS and evaluating antioxidants and antibacterial activities. INTERNATIONAL JOURNAL OF FOOD PROPERTIES 2023. [DOI: 10.1080/10942912.2023.2173229] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Dessie Ezez
- Department of Chemistry, College of Natural Sciences, Arba Minch University, Arba Minch, Ethiopia
| | - Natinael Mekonnen
- Department of Chemistry, College of Natural Sciences, Arba Minch University, Arba Minch, Ethiopia
| | - Molla Tefera
- Department of Chemistry, College of Natural Sciences, University of Gondar, Gondar, Ethiopia
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Wu W, Li G, Zhou W, Wang E, Zhao X, Song X, Zhao Y. Comparison of Composition, Free-Radical-Scavenging Capacity, and Antibiosis of Fresh and Dry Leave Aqueous Extract from Michelia shiluensis. Molecules 2023; 28:5935. [PMID: 37630187 PMCID: PMC10457956 DOI: 10.3390/molecules28165935] [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: 07/02/2023] [Revised: 08/01/2023] [Accepted: 08/05/2023] [Indexed: 08/27/2023] Open
Abstract
Numerous plants of medicinal value grow on Hainan Island (China). Given the lack of knowledge on the phytochemical and pharmacological properties of Michelia shiluensis Chun and Y. F. Wu (M. shiluensis), the application of natural antioxidants and antimicrobials in the food industry has attracted increasing interest. This study aimed to compare the chemical composition, free-radical-scavenging capacity, and antibiosis of aqueous extracts of the fresh and dried leaves of M. shiluensis. The aqueous extract of the leaves of M. shiluensis was obtained using steam distillation, and its chemical components were separated and identified via gas chromatography-mass spectrometry (GC-MS). The free-radical-scavenging capacity and antibiosis were determined. Further, 28 and 20 compounds were isolated from the fresh leaf aqueous extract of M. shiluensis (MSFLAE) and dried leaf aqueous extract of M. shiluensis (MSDLAE), respectively. The free-radical-scavenging capacity of MSFLAE and MSDLAE was determined by the 2,2-diphenyl-1 picrylhydrazyl (DPPH) method, which was 43.43% and 38.74%, respectively. The scavenging capacity of MSFLAE and MSDLAE determined by the 2,2'-azino-bis (3-ethylbenzothiazoline-6-sulfonate (ABTS)) method was 46.90% and 25.99%, respectively. The iron ion reduction capacity of MSFLAE and MSDLAE was determined by the ferric-reducing antioxidant power (FRAP) method as 94.7 and 62.9 μmol Fe2⁺/L, respectively. This indicated that the two leaf aqueous extracts had a certain free-radical-scavenging capacity, and the capacity of MSFLAE was higher than that of MSDLAE. The antibiosis of the two leaf aqueous extracts on the three foodborne pathogenic bacteria was low, but the antimicrobial effects on Gram-positive bacteria were better than those on Gram-negative bacteria. The antibiosis of MSFLAE on Escherichia coli and Staphylococcus aureus was greater than that of MSDLAE. Finally, MSFLAE and MSDLAE both had certain free-radical-scavenging capacities and antibiosis, confirming that the use of this plant in the research and development of natural antioxidants and antibacterial agents was reasonable. Plant aqueous extracts are an essential source of related phytochemistry and have immense pharmacological potential.
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Affiliation(s)
| | | | | | | | | | | | - Ying Zhao
- Hainan Key Laboratory of Biology of Tropical Flowers and Trees Resources, Forestry Institute, Hainan University, Haikou 570228, China; (W.W.); (G.L.); (W.Z.); (E.W.); (X.Z.); (X.S.)
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Nasaruddin NH, Ahmad SN, Sirat SS, Tan KW, Zakaria NA, Mohamad Nazam SS, Rahman NMMA, Mohd Yusof NS, Bahron H. Synthesis, Structural Characterization, Hirshfeld Surface Analysis, and Antibacterial Study of Pd(II) and Ni(II) Schiff Base Complexes Derived from Aliphatic Diamine. ACS OMEGA 2022; 7:42809-42818. [PMID: 36467908 PMCID: PMC9713794 DOI: 10.1021/acsomega.2c04688] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2022] [Accepted: 10/06/2022] [Indexed: 06/17/2023]
Abstract
A Schiff base bearing two methyl substituents, namely, 6,6'-((1E,1'E)-((2,2-dimethylpropane-1,3-diyl) bis(azanylylidene)) bis(methanylylidene)) bis(2-methylphenol) [H2AD1Me] was synthesized and characterized through physicochemical and spectroscopic analyses. Then, the Schiff base was complexed with Pd(II) and Ni(II) to form [Pd(AD1Me)] and [Ni(AD1Me)], respectively. Both metal complexes were successfully obtained and characterized through several analyses, viz., melting point, elemental analysis, molar conductivity, magnetic susceptibility, FTIR, 1H NMR, UV-vis, and single crystal X-ray diffraction. A quantitative analysis of the intermolecular interactions in the crystal structures has been performed using Hirshfeld surface analysis. Both metal complexes were crystallized in a monoclinic crystal system with the space group of P21/c. Additionally, the deprotonated phenolic oxygen atom (O1/O2) and azomethine nitrogen atom (N1/N2) of the ligand chelate the Pd(II) and Ni(II) ions, forming a slightly distorted square-planar complex containing three six-membered rings encircling the metal core with dsp2 hybridization. The shift of ν(C=N) to a higher frequency in FTIR by 26-28 cm-1 indicated that the complexation to Pd(II) and Ni(II) through the azomethine N was established. It was further supported through the shifting of the azomethine proton signal to higher or lower chemical shifts with Δδ = 0.43-1.15 ppm in 1H NMR. In addition, the shifting of the n-π*(C=N) band in UV-vis spectra with Δλ = 24-40 nm indicated the involvement of azomethine nitrogen in the complexation. All the compounds showed no significant antibacterial activity against three bacterial strains, namely, Staphylococcus aureus subsp. aureus Rosenbach (ATCC 6538), Streptococcus mutans Clarke (ATCC 700,610), and Proteus vulgaris (ATCC 6380), as the percent growth inhibition calculated was less than 90%.
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Affiliation(s)
- Nur Husnina Nasaruddin
- Faculty
of Applied Sciences, Universiti Teknologi
MARA, 40450 Shah Alam, Selangor, Malaysia
| | - Shahrul Nizam Ahmad
- Faculty
of Applied Sciences, Universiti Teknologi
MARA, 40450 Shah Alam, Selangor, Malaysia
| | - Siti Syaida Sirat
- Faculty
of Applied Sciences, Universiti Teknologi
MARA, Cawangan Negeri
Sembilan, Kampus Kuala Pilah, 72000 Kuala Pilah, Negeri Sembilan, Malaysia
| | - Kong Wai Tan
- Department
of Chemistry, Faculty of Science, Universiti
Malaya, 50603 Kuala Lumpur, Malaysia
| | - Nurul Aili Zakaria
- Faculty
of Applied Sciences, Universiti Teknologi
MARA, 40450 Shah Alam, Selangor, Malaysia
| | | | - Nor Mas Mira Abd Rahman
- Department
of Chemistry, Faculty of Science, Universiti
Malaya, 50603 Kuala Lumpur, Malaysia
| | - Nor Saadah Mohd Yusof
- Department
of Chemistry, Faculty of Science, Universiti
Malaya, 50603 Kuala Lumpur, Malaysia
| | - Hadariah Bahron
- Faculty
of Applied Sciences, Universiti Teknologi
MARA, 40450 Shah Alam, Selangor, Malaysia
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Xing A, Zeng D, Chen Z. Synthesis, crystal structure and antioxidant activity of butylphenol Schiff bases: Experimental and DFT study. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2021.132209] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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Kırca BK, Kaştaş ÇA, Ersanlı CC. Molecular and electronic structures of two new Schiff base compounds: (E)-2-bromo-6-[(2-bromo-4-methylphenylimino) methyl]-4-chlorophenol and (E)-2-bromo-6-[(4-bromo-3-methylphenylimino) methyl]-4-chlorophenol. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2021.130643] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Van Trang N, Thuy PT, Mai Thanh DT, Son NT. Benzofuran–stilbene hybrid compounds: an antioxidant assessment – a DFT study. RSC Adv 2021. [DOI: 10.1039/d1ra01076j] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The kinetic reaction of the benzofuran–stilbene hybrid compound 5-(2-(2-(4-hydroxyphenyl)benzofuran-5-yl)vinyl)benzene-1,3-diol captures the HOO˙ free radical.
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Affiliation(s)
| | - Phan Thi Thuy
- School of Natural Sciences Education
- Vinh University
- Vietnam
| | - Dinh Thi Mai Thanh
- University of Science and Technology of Hanoi
- Vietnam Academy of Science and Technology (VAST)
- Hanoi
- Vietnam
| | - Ninh The Son
- Institute of Chemistry
- Vietnam Academy of Science and Technology (VAST)
- Hanoi
- Vietnam
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Daravath S, Rambabu A, Vamsikrishna N, Ganji N, Raj S. Synthesis, structural characterization, antioxidant, antimicrobial, DNA incision evaluation and binding investigation studies on copper(II) and cobalt(II) complexes of benzothiazole cored Schiff bases. J COORD CHEM 2019. [DOI: 10.1080/00958972.2019.1634263] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Sreenu Daravath
- Department of Chemistry, Osmania University, Hyderabad, India
| | - Aveli Rambabu
- Department of Chemistry, Osmania University, Hyderabad, India
| | | | - Nirmala Ganji
- Department of Chemistry, Osmania University, Hyderabad, India
| | - Shiva Raj
- Department of Chemistry, Osmania University, Hyderabad, India
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Aryal S, Baniya MK, Danekhu K, Kunwar P, Gurung R, Koirala N. Total Phenolic Content, Flavonoid Content and Antioxidant Potential of Wild Vegetables from Western Nepal. PLANTS 2019; 8:plants8040096. [PMID: 30978964 PMCID: PMC6524357 DOI: 10.3390/plants8040096] [Citation(s) in RCA: 329] [Impact Index Per Article: 65.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/16/2019] [Revised: 03/19/2019] [Accepted: 03/27/2019] [Indexed: 02/07/2023]
Abstract
Eight selected wild vegetables from Nepal (Alternanthera sessilis, Basella alba, Cassia tora, Digera muricata, Ipomoea aquatica, Leucas cephalotes, Portulaca oleracea and Solanum nigrum) were investigated for their antioxidative potential using 2,2-dyphenyl-1-picrylhydrazyl (DPPH) scavenging, hydrogen peroxide (H2O2), ferric reducing antioxidant power (FRAP), and ferric thiocyanate (FTC) methods. Among the selected plant extracts C. tora displayed the highest DPPH radical scavenging activity with an IC50 value 9.898 μg/mL, whereas A. sessilis had the maximum H2O2 scavenging activity with an IC50 value 16.25 μg/mL—very close to that of ascorbic acid (16.26 μg/mL). C. tora showed the highest absorbance in the FRAP assay and the lowest lipid peroxidation in the FTC assay. A methanol extract of A. sessilis resulted in the greatest phenolic content (292.65 ± 0.42 mg gallic acid equivalent (GAE)/g) measured by the Folin–Ciocalteu reagent method, while the smallest content was recorded for B. alba (72.66 ± 0.46 GAE/g). The greatest flavonoid content was observed with extracts of P. oleracea (39.38 ± 0.57 mg quercetin equivalents (QE)/g) as measured by an aluminium chloride colorimetric method, while the least was recorded for I. aquatica (6.61 ± 0.42 QE/g). There was a strong correlation between antioxidant activity with total phenolic (DPPH, R2 = 0.75; H2O2, R2 = 0.71) and total flavonoid content (DPPH, R2 = 0.84; H2O2, R2 = 0.66). This study demonstrates that these wild edible leafy plants could be a potential source of natural antioxidants.
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Affiliation(s)
- Sushant Aryal
- Department of Pharmacy, Universal College of Medical Sciences, Tribhuvan University, Bhairahawa, Rupandehi 32900, Nepal.
| | - Manoj Kumar Baniya
- Department of Pharmacy, Universal College of Medical Sciences, Tribhuvan University, Bhairahawa, Rupandehi 32900, Nepal.
| | - Krisha Danekhu
- Department of Pharmacy, Universal College of Medical Sciences, Tribhuvan University, Bhairahawa, Rupandehi 32900, Nepal.
| | - Puspa Kunwar
- Department of Pharmacy, Universal College of Medical Sciences, Tribhuvan University, Bhairahawa, Rupandehi 32900, Nepal.
| | - Roshani Gurung
- Department of Pharmacy, Shree Medical and Technical College, Purbanchal University, Bharatpur, Chitwan 44200, Nepal.
| | - Niranjan Koirala
- Department of Natural Products Research, Dr. Koirala Research Institute for Biotechnology and Biodiversity, Kathmandu 44600, Nepal.
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Bhowon MG, Jhaumeer Laulloo S, Hosten EC, Khodabaccus MM, Rhyman L, Ramasami P. Synthesis, spectroscopic, biological and DFT studies of new t-butyl substituted salicylaldimines having disulfide moiety. J Mol Struct 2019. [DOI: 10.1016/j.molstruc.2018.07.086] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Tamil Elakkiya M, PremKumar S, Sathiyendran M, Suresh P, Shanmugaiah V, Anitha K. Structural, spectral, computational, thermal and antibacterial studies on a co-crystal: 2-Aminopyrazine phthalic acid. J Mol Struct 2018. [DOI: 10.1016/j.molstruc.2018.07.022] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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11
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Sıdır YG, Aslan C, Berber H, Sıdır İ. The electronic structure, solvatochromism, and electric dipole moments of new Schiff base derivatives using absorbance and fluorescence spectra. Struct Chem 2018. [DOI: 10.1007/s11224-018-1228-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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12
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Wang L, Yang F, Zhao X, Li Y. Effects of nitro- and amino-group on the antioxidant activity of genistein: A theoretical study. Food Chem 2018; 275:339-345. [PMID: 30724205 DOI: 10.1016/j.foodchem.2018.09.108] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2018] [Revised: 09/15/2018] [Accepted: 09/18/2018] [Indexed: 12/31/2022]
Abstract
Five novel compounds (Gen-NO2, Gen-2NO2, Gen-NH2, Gen-2NH2 and Gen-6NH2) have been designed via introducing an electron-withdrawing group -NO2 and an electron-donating group -NH2 into the structure of genistein. The effects of -NO2 and -NH2 groups on the antioxidant ability of genistein were investigated via quantum chemistry method in gas and methanol phases. The crucial parameters related to three antioxidant mechanisms were calculated. Moreover, the frontier molecular orbital, natural bond orbital and global descriptive parameters were calculated to evaluate the reactivity of genistein and its derivatives. Calculated results indicate the antioxidant process of genistein and its derivatives inclines to the hydrogen atom transfer (HAT) and sequential proton loss electron transfer (SPLET) mechanisms in gas and methanol phases, respectively. Moreover, introducing -NH2 group into genistein can improve its antioxidant activity owing to the outstanding activities of amino-substituents of genistein, which will provide valuable guidance for the synthesis of new antioxidants experimentally.
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Affiliation(s)
- Lingling Wang
- Key Laboratory of Forest Plant Ecology, Ministry of Education, Northeast Forestry University, Harbin, Heilongjiang 150040, China
| | - Fengjian Yang
- Key Laboratory of Forest Plant Ecology, Ministry of Education, Northeast Forestry University, Harbin, Heilongjiang 150040, China
| | - Xiuhua Zhao
- Key Laboratory of Forest Plant Ecology, Ministry of Education, Northeast Forestry University, Harbin, Heilongjiang 150040, China.
| | - Yuanzuo Li
- College of Science, Northeast Forestry University, Harbin, Heilongjiang 150040, China.
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Yilmaz E. Investigation of spectral properties and synthesis characterization of (Z)-4-(2-(4-methoxy-2,3-dimethylbenzylidene)hydrazinyl)benzonitrile compound. J Mol Struct 2017. [DOI: 10.1016/j.molstruc.2017.07.060] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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