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Su F, Yang G, Hu D, Ruan C, Wang J, Zhang Y, Zhu Q. Chemical Composition, Antibacterial and Antioxidant Activities of Essential Oil from Centipeda minima. Molecules 2023; 28:molecules28020824. [PMID: 36677882 PMCID: PMC9861044 DOI: 10.3390/molecules28020824] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2022] [Revised: 12/31/2022] [Accepted: 01/10/2023] [Indexed: 01/18/2023] Open
Abstract
This study elucidated the chemical composition of essential oil from Centipeda minima (EOCM) and its antibacterial and antioxidant activities with two chemical monomers thymol and carvacrol. The main chemical composition of EOCM, analyzed by GC-MS, were trans-chrysanthenyl acetate, thymol, aromadendrene and β-caryophyllene. In the screening of antibacterial activity against S. aureus, two monomers with antibacterial activity were obtained: thymol and carvacrol. The MIC of EOCM, thymol and carvacrol were 0.625 mg/mL, 0.156 mg/mL and 0.156 mg/mL, respectively. The experimental results were shown that three drugs could inhibit the growth of S. aureus and inhibit the formation of biofilm by changing the permeability of cell membrane and interfering with the metabolic activities in bacteria. The scavenging effects of the three drugs on DPPH radical and hydroxyl radical showed that the antioxidant effect of the three drugs was EOCM > carvacrol > thymol.
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Affiliation(s)
- Fan Su
- School of Pharmacy, Shandong University of Traditional Chinese Medicine, Jinan 250355, China
| | - Gan Yang
- School of Pharmacy, Shandong University of Traditional Chinese Medicine, Jinan 250355, China
| | - Datong Hu
- Shandong Academy of Pharmaceutical Sciences, Jinan 250098, China
| | - Chen Ruan
- School of Pharmacy, Shandong University of Traditional Chinese Medicine, Jinan 250355, China
| | - Jing Wang
- School of Pharmacy, Shandong University of Traditional Chinese Medicine, Jinan 250355, China
| | - Yingying Zhang
- School of Traditional Chinese Medicine, Shandong University of Traditional Chinese Medicine, Jinan 250355, China
- Correspondence: (Y.Z.); (Q.Z.)
| | - Qingjun Zhu
- Innovation Research Institute of Traditional Chinese Medicine, Shandong University of Traditional Chinese Medicine, Jinan 250355, China
- Correspondence: (Y.Z.); (Q.Z.)
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Mendili M, Essghaier B, Seaward MRD, Khadhri A. In vitro evaluation of lysozyme activity and antimicrobial effect of extracts from four Tunisian lichens: Diploschistes ocellatus, Flavoparmelia caperata, Squamarina cartilaginea and Xanthoria parietina. Arch Microbiol 2021; 203:1461-1469. [PMID: 33388791 DOI: 10.1007/s00203-020-02129-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2020] [Revised: 11/06/2020] [Accepted: 11/18/2020] [Indexed: 12/13/2022]
Abstract
Since lichens have been recognised as a potential natural source of bioactive substances, the aim of this study was to investigate the antimicrobial, lysozyme and antifungal effects of methanol, acetone and quencher extracts from four lichens: Diploschistes ocellatus, Flavoparmelia caperata, Squamarina cartilaginea and Xanthoria parietina. The results showed that the tested extracts had antimicrobial activity against Gram-positive and Gram-negative bacteria and anti-candida, and inhibit the spore germination of tested fungi. The different extracts varied in their effect as determined by the diameter of the inhibition zone, the highest values being observed with the methanol and acetone extracts (29.5 and 27.5 mm, respectively) for S. cartilaginea against Enterococcus faecalis. For powdered material (quencher), F. caperata showed the highest inhibition diameter (25.5 mm) against Staphylococcus aureus. The Minimum Inhibitory Concentration (MIC) values varied from 125 to 2000 μg mL-1. Methanol extracts of S. cartilaginea were more active against Enterobacter cloacae (MIC 125 µg mL-1) and Staphylococcus aureus (MIC 125 µg mL-1), and also affected lysozyme activity against Staphylococcus aureus, as well as the morphology of fungal hyphae. This study demonstrated that the investigated species are a potential source of bioactive compounds which are potentially important antimicrobial agents.
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Affiliation(s)
- M Mendili
- Unit of Research of Plant Ecology, University of Tunis El-Manar II, Faculty of Sciences, Campus Academia, 2092, Tunis, Tunisia
| | - B Essghaier
- Laboratory Mycology Pathology and Biomarkers, Faculty of Sciences, University of Tunis El-Manar II, Campus Academia, 2092, Tunis, Tunisia
| | - M R D Seaward
- School of Archaeological and Forensic Sciences, University of Bradford, Bradford, BD7 1DP, UK
| | - A Khadhri
- Unit of Research of Plant Ecology, University of Tunis El-Manar II, Faculty of Sciences, Campus Academia, 2092, Tunis, Tunisia.
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Gundogdu G, Gundogdu K, Nalci KA, Demirkaya AK, Yılmaz Tascı S, Demirkaya Miloglu F, Senol O, Hacimuftuoglu A. The Effect of Parietin Isolated From Rheum ribes L on In Vitro Wound Model Using Human Dermal Fibroblast Cells. INT J LOW EXTR WOUND 2019; 18:56-64. [DOI: 10.1177/1534734618819660] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Parietin is one of the well-known anthraquinone compounds that can be extracted from Rheum ribes L. In this study, we aimed to investigate the effects of parietin isolated from Rheum ribes L on an in vitro wound model using human dermal fibroblast cells and compare its effectiveness against zinc. The antioxidant effect of parietin was determined by using the 1,1-diphenyl-2-picrylhydrazine (DPPH) method. Human dermal fibroblast cells were cultured in proculture medium and were kept until 100% confluence was achieved. The wound model was created by using a pipette tip. After that, different concentrations of parietin and zinc (final concentrations in the well to be 5-250 µM and 25-200 µM, respectively) were added into the medium. The proliferation-inducing effect on cell viability was determined by using MTT assay. Images of cells were taken at 0, 12, and 24 hours. According to the DPPH method, parietin exhibited have antioxidant activity. According to the MTT results, parietin exhibited significant proliferation-inducing effect on cell viability in a dose range of 5 to 10 M, and zinc showed significant proliferation-inducing effect on cell viability at dose 50 µM ( P < .05). In addition, the image of cell proliferation was also shown at the same doses at 24 hours. In this study, we claim that parietin induces cell proliferation at low doses in cases of dermal fibroblast loss. In conclusion, parietin as an alternative to zinc in wound healing could be used by clinicians in the future with more extensive studies.
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Affiliation(s)
| | - Koksal Gundogdu
- Erzurum Regional Training and Research Hospital, Erzurum, Turkey
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Piana M, Boligon AA, Brum TFDE, Zadra M, Belke BV, Froeder ALF, Frohlich JK, Nunes LT, Pappis L, Boligon AA, Athayde ML. Phytochemical analysis and antioxidant capacity of Tabernaemontana catharinensis A. DC. Fruits and branches. AN ACAD BRAS CIENC 2014; 86:881-888. [PMID: 24789214 DOI: 10.1590/0001-3765201420120020] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2012] [Accepted: 11/26/2013] [Indexed: 11/22/2022] Open
Abstract
The antioxidant capacity of the crude extract and fractions of Tabernaemontana catharinensis fruits and branches, was evaluated by the 2,2-diphenyl-1-picrylhydrazyl (DPPH) method and the content of polyphenols, flavonoids, alkaloids and condensed tannins were determined by the spectrophotometric method. The ethyl acetate fraction of the fruits and the n-butanol fraction of the branches showed IC50 of 181.82 µg/mL and 78.19 µg/mL, respectively. All fractions were analyzed by high performance liquid chromatography (HPLC), in the branches were quantified chlorogenic acid in the chloroform (8.96 mg/g), ethyl acetate (4.31 mg/g) and n-butanol (3.33 mg/g) fractions; caffeic acid in the ethyl acetate (5.24 mg/g) and n-butanol (1.81 mg/g); gallic acid (0.52 mg/g) in the n-butanol. In the fruits, chlorogenic acid in the chloroform (1.67 mg/g); rutin in the ethyl acetate (3.45 mg/g) and n-butanol (8.98 mg/g) fractions. The present study showed that these quantified compounds can contribute to antioxidant capacity which was higher in the branches than in the fruits.
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Affiliation(s)
- Mariana Piana
- Laboratório de Fitoquímica, Departmento de Farmácia Industrial, Universidade Federal de Santa Maria, Santa Maria, RS, Brasil
| | - Aline A Boligon
- Laboratório de Fitoquímica, Departmento de Farmácia Industrial, Universidade Federal de Santa Maria, Santa Maria, RS, Brasil
| | - Thiele F DE Brum
- Laboratório de Fitoquímica, Departmento de Farmácia Industrial, Universidade Federal de Santa Maria, Santa Maria, RS, Brasil
| | - Marina Zadra
- Laboratório de Fitoquímica, Departmento de Farmácia Industrial, Universidade Federal de Santa Maria, Santa Maria, RS, Brasil
| | - Bianca V Belke
- Laboratório de Fitoquímica, Departmento de Farmácia Industrial, Universidade Federal de Santa Maria, Santa Maria, RS, Brasil
| | - Amanda L F Froeder
- Laboratório de Fitoquímica, Departmento de Farmácia Industrial, Universidade Federal de Santa Maria, Santa Maria, RS, Brasil
| | - Janaína K Frohlich
- Laboratório de Fitoquímica, Departmento de Farmácia Industrial, Universidade Federal de Santa Maria, Santa Maria, RS, Brasil
| | - Letícia T Nunes
- Laboratório de Fitoquímica, Departmento de Farmácia Industrial, Universidade Federal de Santa Maria, Santa Maria, RS, Brasil
| | - Lauren Pappis
- Laboratório de Fitoquímica, Departmento de Farmácia Industrial, Universidade Federal de Santa Maria, Santa Maria, RS, Brasil
| | - Alexandra A Boligon
- Departamento de Fitotecnia, Campus São Gabriel, Universidade Federal do Pampa, São Gabriel, RS, Brasil
| | - Margareth L Athayde
- Laboratório de Fitoquímica, Departmento de Farmácia Industrial, Universidade Federal de Santa Maria, Santa Maria, RS, Brasil
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Sisodia R, Geol M, Verma S, Rani A, Dureja P. Antibacterial and antioxidant activity of lichen species Ramalina roesleri. Nat Prod Res 2013; 27:2235-9. [PMID: 23822758 DOI: 10.1080/14786419.2013.811410] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
Solvent extracts of Ramalina roesleri Nyl were assayed for antimicrobial and antioxidant activity. Hexane extract was highly active against Staphylococcus aureus and Streptococcus mutans. The 1,1-diphenyl-2-picryl-hydrazil (DPPH) radical scavenging activity of extracts ranged from 29.42% to 87.90%. Atranorin, protolichesterinic acid, usnic acid, 2-hydroxy-4-methoxy-6-propyl benzoic acid, homosekikaic acid, sekikaic acid, benzoic acid, 2,4-dihydroxy-6-propyl and 2,4-dihydroxy-3,6-dimethyl benzoate were isolated from the hexane extract. Maximum DPPH radical scavenging activity was exhibited by sekikaic acid followed by homosekikaic acid.
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Affiliation(s)
- R Sisodia
- a Division of Agricultural Chemicals, Indian Agricultural Research Institute , New Delhi , 110012 , India
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Barreto RS, Albuquerque-Júnior RL, Pereira-Filho RN, Quintans JS, Barreto AS, DeSantana JM, Santana-Filho VJ, Santos MR, Bonjardim LR, Araújo AA, Quintans-Júnior LJ. Evaluation of wound healing activity of atranorin, a lichen secondary metabolite, on rodents. REVISTA BRASILEIRA DE FARMACOGNOSIA-BRAZILIAN JOURNAL OF PHARMACOGNOSY 2013. [DOI: 10.1590/s0102-695x2013005000010] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Srivastava J, Vankar PS. Principal phenolic phytochemicals and antioxidant property in Eucalyptus bark. ACTA ACUST UNITED AC 2012. [DOI: 10.1108/00346651211277663] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Mitrović T, Stamenković S, Cvetković V, Tošić S, Stanković M, Radojević I, Stefanović O, Čomić L, Đačić D, Ćurčić M, Marković S. Antioxidant, antimicrobial and antiproliferative activities of five lichen species. Int J Mol Sci 2011; 12:5428-48. [PMID: 21954369 PMCID: PMC3179176 DOI: 10.3390/ijms12085428] [Citation(s) in RCA: 76] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2011] [Revised: 08/15/2011] [Accepted: 08/19/2011] [Indexed: 12/05/2022] Open
Abstract
The antioxidative, antimicrobial and antiproliferative potentials of the methanol extracts of the lichen species Parmelia sulcata, Flavoparmelia caperata, Evernia prunastri, Hypogymnia physodes and Cladonia foliacea were evaluated. The total phenolic content of the tested extracts varied from 78.12 to 141.59 mg of gallic acid equivalent (GA)/g of extract and the total flavonoid content from 20.14 to 44.43 mg of rutin equivalent (Ru)/g of extract. The antioxidant capacities of the lichen extracts were determined by 2,2-diphenyl-1-picrylhydrazyl (DPPH) radicals scavenging. Hypogymnia physodes with the highest phenolic content showed the strongest DPPH radical scavenging effect. Further, the antimicrobial potential of the lichen extracts was determined by a microdilution method on 29 microorganisms, including 15 strains of bacteria, 10 species of filamentous fungi and 4 yeast species. A high antimicrobial activity of all the tested extracts was observed with more potent inhibitory effects on the growth of Gram (+) bacteria. The highest antimicrobial activity among lichens was demonstrated by Hypogymnia physodes and Cladonia foliacea. Finally, the antiproliferative activity of the lichen extracts was explored on the colon cancer adenocarcinoma cell line HCT-116 by MTT (3-[4,5-dimethylthiazol-2-yl]-2,5-diphenyltetrazolium bromide) viability assay and acridine orange/ethidium bromide staining. The methanol extracts of Hypogymnia physodes and Cladonia foliacea showed a better cytotoxic activity than the other extracts. All lichen species showed the ability to induce apoptosis of HCT-116 cells.
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Affiliation(s)
- Tatjana Mitrović
- Department of Biology and Ecology, Faculty of Science and Mathematics, University of Niš, 33, Višegradska, 18000 Niš, Serbia; E-Mails: (S.S.); (V.C); (S.T.)
| | - Slaviša Stamenković
- Department of Biology and Ecology, Faculty of Science and Mathematics, University of Niš, 33, Višegradska, 18000 Niš, Serbia; E-Mails: (S.S.); (V.C); (S.T.)
| | - Vladimir Cvetković
- Department of Biology and Ecology, Faculty of Science and Mathematics, University of Niš, 33, Višegradska, 18000 Niš, Serbia; E-Mails: (S.S.); (V.C); (S.T.)
| | - Svetlana Tošić
- Department of Biology and Ecology, Faculty of Science and Mathematics, University of Niš, 33, Višegradska, 18000 Niš, Serbia; E-Mails: (S.S.); (V.C); (S.T.)
| | - Milan Stanković
- Department of Biology and Ecology, Faculty of Science, University of Kragujevac, 12, Radoja Domanovića, 34000 Kragujevac, Serbia; E-Mails: (M.S.); (I.R.); (O.S.); (L.Č.); (D.Đ.); (M.Ć.); (S.M.)
| | - Ivana Radojević
- Department of Biology and Ecology, Faculty of Science, University of Kragujevac, 12, Radoja Domanovića, 34000 Kragujevac, Serbia; E-Mails: (M.S.); (I.R.); (O.S.); (L.Č.); (D.Đ.); (M.Ć.); (S.M.)
| | - Olgica Stefanović
- Department of Biology and Ecology, Faculty of Science, University of Kragujevac, 12, Radoja Domanovića, 34000 Kragujevac, Serbia; E-Mails: (M.S.); (I.R.); (O.S.); (L.Č.); (D.Đ.); (M.Ć.); (S.M.)
| | - Ljiljana Čomić
- Department of Biology and Ecology, Faculty of Science, University of Kragujevac, 12, Radoja Domanovića, 34000 Kragujevac, Serbia; E-Mails: (M.S.); (I.R.); (O.S.); (L.Č.); (D.Đ.); (M.Ć.); (S.M.)
| | - Dragana Đačić
- Department of Biology and Ecology, Faculty of Science, University of Kragujevac, 12, Radoja Domanovića, 34000 Kragujevac, Serbia; E-Mails: (M.S.); (I.R.); (O.S.); (L.Č.); (D.Đ.); (M.Ć.); (S.M.)
| | - Milena Ćurčić
- Department of Biology and Ecology, Faculty of Science, University of Kragujevac, 12, Radoja Domanovića, 34000 Kragujevac, Serbia; E-Mails: (M.S.); (I.R.); (O.S.); (L.Č.); (D.Đ.); (M.Ć.); (S.M.)
| | - Snežana Marković
- Department of Biology and Ecology, Faculty of Science, University of Kragujevac, 12, Radoja Domanovića, 34000 Kragujevac, Serbia; E-Mails: (M.S.); (I.R.); (O.S.); (L.Č.); (D.Đ.); (M.Ć.); (S.M.)
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Zhang W, Chen H, Wang Z, Lan G, Zhang L. Comparative studies on antioxidant activities of extracts and fractions from the leaves and stem of Epimedium koreanum Nakai. Journal of Food Science and Technology 2011; 50:1122-9. [PMID: 24426024 DOI: 10.1007/s13197-011-0447-4] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Revised: 05/26/2011] [Accepted: 06/28/2011] [Indexed: 01/23/2023]
Abstract
The antioxidant potency of various extracts and fractions from the leaves and stem of Epimedium koreanum Nakai was evaluated using three esteblished methods, specifically the 2, 2-diphenyl-1-picrylhydrazyl (DPPH) radica-scavenging activity assay, the inhibitory effect on lipid peroxidation induced by Fe(2+)/ascorbate (MDA) assay and the ferric reducing power (FRP) assay. The amounts of total phenolics and total flavonoids in the extracts and fractions were determined by spectrophotometric methods and the content of icariin was determined by HPLC. The results showed that all the extracts and fractions exhibited antioxidant activities at different magnitudes of potency. The leaf extract and fractions demonstrated superior antioxidant activity in most of the assays. The decreasing order of antioxidant activities among the extracts/fractions assayed through the three methods were found to be n-BuOH fraction>ethyl acetate fraction>ethanol extract>petroleum ether fraction>water fraction. A positive correlation was found between the amounts of total phenolics, total flavonoids and icariin and DPPH radical scavenging activity (R(2) = 0.9935, 0.9944 and 0.9997, respectively) and inhibitory activity on lipid peroxidation (R(2) = 0.9987, 0.9830 and 0.9886, respectively). The results suggested that Icariin was one of the main constituents contribute to the antioxidant activity of Epimedium koreanum Nakai and the n-BuOH fractions of leaf extract might be valuable antioxidant natural sources.
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Affiliation(s)
- Wenjing Zhang
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin, 300072 People's Republic of China
| | - Haixia Chen
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin, 300072 People's Republic of China
| | - Zhaoshuai Wang
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin, 300072 People's Republic of China
| | - Gaoshuang Lan
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin, 300072 People's Republic of China
| | - Likang Zhang
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin, 300072 People's Republic of China
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Liu J, Wang C, Wang Z, Zhang C, Lu S, Liu J. The antioxidant and free-radical scavenging activities of extract and fractions from corn silk (Zea mays L.) and related flavone glycosides. Food Chem 2011. [DOI: 10.1016/j.foodchem.2010.11.014] [Citation(s) in RCA: 129] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Abstract
AbstractThe methanol extracts of four Parmeliaceae lichens (Hypogymnia physodes, Evernia prunastri, Flavoparmelia caperata and Parmelia sulcata) were screened for antioxidant properties and total phenol content. The H. physodes extract was the most effective at reducing iron(III) and scavenging 1,1-diphenyl-2-picrylhydrazyl radicals, while the P. sulcata extract was the most effective in reducing molybdenum(VI) in an acidic medium. The E. prunastri and H. physodes extracts contained more Folin-Ciocalteu reagent reactive substances than the F. caperata and P. sulcata extracts. Significant activity of the H. physodes extract in DPPH and reducing Fe(III) assays suggest that this lichen can be considered as a potential source of antioxidants.
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Antioxidant and antimicrobial properties of the lichens Anaptychya ciliaris, Nephroma parile, Ochrolechia tartarea and Parmelia centrifuga. Open Life Sci 2010. [DOI: 10.2478/s11535-010-0043-z] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
AbstractThe aim of this study was to characterize the antioxidant and antimicrobial activity of the methanol extracts of: Anaptychya ciliaris, Nephroma parile, Ochrolechia tartarea and Parmelia centrifuga. The methanol extract of the P. centrifuga showed a strong antioxidant activity, in comparison to the extracts from A. ciliaris, O. tartarea and N. parile which were relatively weaker. Furthermore, the methanol extract of the lichen P. centrifuga was shown to contain the highest total phenol content (54.19 mg/g of the dry extract). Interestingly, a statistically significant positive relationship between the antioxidant activity and the total phenol content was observed. The minimum inhibitory concentration (MIC) against six bacterial and eleven fungi was established for the methanol extracts from each of species of lichens. The methanol extracts of the lichens P. centrifuga and O. tartarea showed the strongest both antibacterial and antifungal activity. Taken together, the results from this study suggest that the lichens P. centrifuga and O. tartarea may be used as a natural source of antioxidants in addition to providing certain antimicrobial features.
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Boligon AA, Pereira RP, Feltrin AC, Machado MM, Janovik V, Rocha JBT, Athayde ML. Antioxidant activities of flavonol derivatives from the leaves and stem bark of Scutia buxifolia Reiss. BIORESOURCE TECHNOLOGY 2009; 100:6592-6598. [PMID: 19666219 DOI: 10.1016/j.biortech.2009.03.091] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/06/2009] [Revised: 03/23/2009] [Accepted: 03/24/2009] [Indexed: 05/28/2023]
Abstract
This study evaluated the antioxidant activities in the leaves and stem bark fractions of Scutia buxifolia. Cerebral lipid peroxidation (TBARS) was induced by Fe(II) and radical-scavenging activity was determined by DPPH method. Folin-Ciocalteu was used to determine phenolic contents. Quercetin, quercitrin, isoquercitrin and rutin were isolated from leaf ethyl acetate fraction and their levels were measured by high performance liquid chromatography-photodiode array detector. IC(50) (DPPH) varied from 4.35+/-1.30 to 29.55+/-0.54 microg/mL for stem bark and from 6.50+/-0.40 to 30.54+/-1.14 in the leaves. Ethyl acetate and butanolic fractions caused a sharp fall in TBARS production with IC(50) from 2.93+/-2.17 to 40.46+/-2.51 microg/mL for the leaves and 0.66+/-0.17 to 27.3+/-1.23 for the stem bark. Results obtained indicated that S. buxifolia has a great potential to prevent disease caused by the overproduction of free radicals and also it might be used as a potential source of natural antioxidant agents.
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Affiliation(s)
- Aline Augusti Boligon
- Departamento de Farmácia Industrial, Programa de Pós-Graduação em Ciências Farmacêuticas, Universidade Federal de Santa Maria, Santa Maria, RS 97105-900, Brazil
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Tung YT, Wu JH, Huang CY, Kuo YH, Chang ST. Antioxidant activities and phytochemical characteristics of extracts from Acacia confusa bark. BIORESOURCE TECHNOLOGY 2009; 100:509-514. [PMID: 18280147 DOI: 10.1016/j.biortech.2008.01.001] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/02/2007] [Revised: 12/23/2007] [Accepted: 01/03/2008] [Indexed: 05/25/2023]
Abstract
The present study was carried out to evaluate the antioxidant activities of bark extract of Acacia confusa and some of the isolated constituents from its ethyl acetate (EtOAc) fraction in various in vitro systems to gain mechanistic insights. Results from antioxidant assays together with authentic antioxidant standards revealed that EtOAc fraction showed strong superoxide radical scavenging activity, reducing power, and ferrous ion-chelating ability. Following an in vitro antioxidant activity-guided fractionation procedure, 16 constituents including 12 benzoic acids, three cinnamic acids and one lignans were isolated and identified from the EtOAc fraction. We also evaluated the structure-activity relationships of benzoic and cinnamic acid derivatives. Results obtained indicated that the bark extracts and the derived phytochemicals from A. confusa have a great potential to prevent disease caused by the overproduction of radicals and also it might be used as a potential source of natural antioxidant agent.
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Affiliation(s)
- Yu-Tang Tung
- School of Forestry and Resource Conservation, National Taiwan University, Taipei, Taiwan
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