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Kongkham B, Duraivadivel P, Hariprasad P. Acorus calamus L. rhizome extract and its bioactive fraction exhibits antibacterial effect by modulating membrane permeability and fatty acid composition. JOURNAL OF ETHNOPHARMACOLOGY 2024; 331:118323. [PMID: 38729535 DOI: 10.1016/j.jep.2024.118323] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2023] [Revised: 04/22/2024] [Accepted: 05/08/2024] [Indexed: 05/12/2024]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE India's ancient texts, the Charak Samhita and Sushruta Samhita, make reference to the traditional medicinal usage of Acorus calamus L. In India and China, it has long been used to cure stomach aches, cuts, diarrhea, and skin conditions. This ability of the rhizome is attributed to its antimicrobial properties. Research studies to date have shown its antimicrobial properties. However, scientific evidence on its mode of action is still lacking. AIM OF THE STUDY Acorus calamus L. rhizome extract and its bioactive fraction exhibits antibacterial effect by modulating membrane permeability and fatty acid composition. MATERIAL AND METHOD The secondary metabolites in the rhizome of A. calamus L. were extracted in hexane using Soxhlet apparatus. The ability of the extract to inhibit multidrug resistant bacterial isolates, namely Bacillus cereus, Escherichia coli, Acinetobacter baumannii, and Pseudomonas aeruginosa were evaluated using checkerboard assay. Further, the extract was purified using thin layer chromatography, gravity column chromatography, and combiflash chromatography. Structure elucidation of the active compound was done using GC-MS, FT-IR, and UV-Vis spectral scan. The mode of action of the bioactive fraction was determined. Bacterial membrane damage was analyzed using SEM, membrane permeability was determined using SYBR green I and PI dye, leakage of cytoplasmic contents were analyzed using Bradford assay and Fehling's reagent. The ability to inhibit efflux pump of A. baumannii was determined using EtBr accumulation assay and β-lactamase inhibition was analyzed using nitrocefin as substrate. Also, the biofilm inhibition of B. cereus was determined using crystal violet dye. Moreover, the effect of the bioactive fraction on the fatty acid profile of the bacterial membrane was determined by GC-FAME analysis using 37 component FAME mix as standard. RESULTS Acorus calamus L. rhizome hexane extract (AC-R-H) demonstrated broad-spectrum antibacterial activity against all the isolates tested. AC-R-H extract also significantly reduced the MIC of ampicillin against all tested bacteria, indicating its bacterial resistance modulating properties. The assay guided purification determined Asarone as the major compound present in the bioactive fraction (S-III-BAF). S-III-BAF was found to reduce the MIC of ampicillin against Escherichia coli (100-25 mg/mL), Pseudomonas aeruginosa (15-3.25 mg/mL), Acinetobacter baumannii (12.5-1.56 mg/ml), and Bacillus cereus (10-1.25 mg/mL). Further, it recorded synergistic activity with ampicillin against B. cereus (FICI = 0.365), P. aeruginosa (FICI = 0.456), and A. baumannii (FICI = 0.245). The mode of action of S-III-BAF can be attributed to its ability to disturb the membrane integrity, enhance membrane permeability, reduce biofilm formation, and possibly alter the fatty acid composition of the bacterial cell membranes. CONCLUSION The bioactive fraction of AC-R-H extract containing Asarone as the active compound showed antibacterial activity and synergistic interactions with ampicillin against the tested bacterial isolates. Such activity can be attributed to the modulation of fatty acids present in bacterial membranes, which enhances membrane permeability and causes membrane damage.
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Affiliation(s)
- Bhani Kongkham
- Environmental Biotechnology Lab, Centre for Rural Development and Technology, Indian Institute of Technology, Delhi, India
| | - P Duraivadivel
- Environmental Biotechnology Lab, Centre for Rural Development and Technology, Indian Institute of Technology, Delhi, India
| | - P Hariprasad
- Environmental Biotechnology Lab, Centre for Rural Development and Technology, Indian Institute of Technology, Delhi, India.
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Aryal S, Poudel A, Kafle K, Aryal LN. Insecticidal toxicity of essential oil of Nepalese Acorus calamus (Acorales:Acoraceae) against Sitophilus zeamais (Coleoptera:Curculionidae). Heliyon 2023; 9:e22130. [PMID: 38045125 PMCID: PMC10692820 DOI: 10.1016/j.heliyon.2023.e22130] [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: 03/31/2023] [Revised: 10/21/2023] [Accepted: 11/05/2023] [Indexed: 12/05/2023] Open
Abstract
Maize weevil (Sitophilus zeamais) (Coleoptera:Curculionidae) is an economic stored grain pest that causes significant damage to various stored products, including maize (Zea mays). In this study, we extracted essential oil from the rhizome of sweet flag (Acorus calamus) (Acorales:Acoraceae) by hydro-distillation and tested insecticidal property of the oil at 7 concentrations (10, 5, 2.5, 1.25, 0.625, 0.3125, 0.15625 and control) against maize weevil (Sitophilus zeamais) at the National Entomology Research Center, Nepal Agricultural Research Council in the year 2020/2021. Three different experiments were conducted: scintillating vial bioassay, repellency test, and exposing weevils to oil treated maize grains. Scintillating vial bioassay showed that higher the concentration of essential oil, lower the time required to cause 50 % maize weevil mortality. Median lethal concentration (LC50) at 3 and 24 h was calculated as 2.29 and 0.16 % of oil concentration in scintillating vial bioassay. When oil is treated to maize grain, LC50 for 10 and 16 days was calculated as 2.77 and 0.23 % of oil concentrations. In the same way, at 10 % concentration maize weevil showed highest repellent activity (98.75 %) as compared to 5, 2.5 and 1.25 % concentrations after 24 h of treatment. Weight loss and grain damage were significantly less in the oil treatments than the control. However, from the perspective of health benefits, Acorus calamus treated maize is still questionable for feed and food purpose. As β asarone has carcinogenic effects at certain level, it needs further residue tests of treated maize to know allowable maximum residue limit (MRL) before consumption as food or feed.
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Affiliation(s)
- Sunil Aryal
- Horticulture Research Station, Pokhara, Kaski, Nepal Agricultural Research Council, Nepal
| | - Ashmita Poudel
- Tribhuvan University, Institute of Agriculture and Animal Sciences, Kirtipur, Kathmandu, Nepal
| | - Kapil Kafle
- Tribhuvan University, Institute of Agriculture and Animal Sciences, Kirtipur, Kathmandu, Nepal
| | - Lok Nath Aryal
- Horticulture Research Station, Pokhara, Kaski, Nepal Agricultural Research Council, Nepal
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Movahedi A, Almasi Zadeh Yaghuti A, Wei H, Rutland P, Sun W, Mousavi M, Li D, Zhuge Q. Plant Secondary Metabolites with an Overview of Populus. Int J Mol Sci 2021; 22:ijms22136890. [PMID: 34206964 PMCID: PMC8268465 DOI: 10.3390/ijms22136890] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Revised: 06/02/2021] [Accepted: 06/09/2021] [Indexed: 12/24/2022] Open
Abstract
Populus trees meet continuous difficulties from the environment through their life cycle. To warrant their durability and generation, Populus trees exhibit various types of defenses, including the production of secondary metabolites. Syntheses derived from the shikimate-phenylpropanoid pathway are a varied and plentiful class of secondary metabolites manufactured in Populus. Amongst other main classes of secondary metabolites in Populus are fatty acid and terpenoid-derivatives. Many of the secondary metabolites made by Populus trees have been functionally described. Any others have been associated with particular ecological or biological processes, such as resistance against pests and microbial pathogens or acclimatization to abiotic stresses. Still, the functions of many Populus secondary metabolites are incompletely understood. Furthermore, many secondary metabolites have therapeutic effects, leading to more studies of secondary metabolites and their biosynthesis. This paper reviews the biosynthetic pathways and therapeutic impacts of secondary metabolites in Populus using a genomics approach. Compared with bacteria, fewer known pathways produce secondary metabolites in Populus despite P. trichocarpa having had its genome sequenced.
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Affiliation(s)
- Ali Movahedi
- Co-Innovation Center for Sustainable Forestry in Southern China, Key Laboratory of Forest Genetics & Biotechnology, Ministry of Education, College of Biology and the Environment, Nanjing Forestry University, Nanjing 210037, China; (A.A.Z.Y.); (H.W.); (W.S.); (M.M.); (D.L.); (Q.Z.)
- Correspondence: ; Fax: +86-25-8542-8701
| | - Amir Almasi Zadeh Yaghuti
- Co-Innovation Center for Sustainable Forestry in Southern China, Key Laboratory of Forest Genetics & Biotechnology, Ministry of Education, College of Biology and the Environment, Nanjing Forestry University, Nanjing 210037, China; (A.A.Z.Y.); (H.W.); (W.S.); (M.M.); (D.L.); (Q.Z.)
| | - Hui Wei
- Co-Innovation Center for Sustainable Forestry in Southern China, Key Laboratory of Forest Genetics & Biotechnology, Ministry of Education, College of Biology and the Environment, Nanjing Forestry University, Nanjing 210037, China; (A.A.Z.Y.); (H.W.); (W.S.); (M.M.); (D.L.); (Q.Z.)
| | - Paul Rutland
- Clinical and Molecular Genetics Units, Institute of Child Health, London WC1N 1EH, UK;
| | - Weibo Sun
- Co-Innovation Center for Sustainable Forestry in Southern China, Key Laboratory of Forest Genetics & Biotechnology, Ministry of Education, College of Biology and the Environment, Nanjing Forestry University, Nanjing 210037, China; (A.A.Z.Y.); (H.W.); (W.S.); (M.M.); (D.L.); (Q.Z.)
| | - Mohaddeseh Mousavi
- Co-Innovation Center for Sustainable Forestry in Southern China, Key Laboratory of Forest Genetics & Biotechnology, Ministry of Education, College of Biology and the Environment, Nanjing Forestry University, Nanjing 210037, China; (A.A.Z.Y.); (H.W.); (W.S.); (M.M.); (D.L.); (Q.Z.)
| | - Dawei Li
- Co-Innovation Center for Sustainable Forestry in Southern China, Key Laboratory of Forest Genetics & Biotechnology, Ministry of Education, College of Biology and the Environment, Nanjing Forestry University, Nanjing 210037, China; (A.A.Z.Y.); (H.W.); (W.S.); (M.M.); (D.L.); (Q.Z.)
| | - Qiang Zhuge
- Co-Innovation Center for Sustainable Forestry in Southern China, Key Laboratory of Forest Genetics & Biotechnology, Ministry of Education, College of Biology and the Environment, Nanjing Forestry University, Nanjing 210037, China; (A.A.Z.Y.); (H.W.); (W.S.); (M.M.); (D.L.); (Q.Z.)
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Ferula asafoetida: chemical composition, thermal behavior, antioxidant and antimicrobial activities of leaf and gum hydroalcoholic extracts. Journal of Food Science and Technology 2021; 58:2148-2159. [PMID: 33967312 DOI: 10.1007/s13197-020-04724-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Revised: 08/07/2020] [Accepted: 08/13/2020] [Indexed: 10/23/2022]
Abstract
This is the first original study on chemical, thermal, antimicrobial, and antioxidant activity of the leaf and gum hydroethanolic (20:80 v/v) extracts of Ferula asafoetida endemic for Iran. The ratio of solvent to the dried matters was 3:1 (w/w) and after filtering, the solvent was evaporated under vacuum (at 40 °C). Leaf extract contained greater phenolic and flavonoid compounds and thus higher DPPH scavenging and ferric reducing power. Leaf extract constituted high levels of carvacrol (15.40%) and α-bisabolol (9.75%) while in gum extract contained high levels of (Z)-b-ocimene (20.91%) and (E)-1-propenyl-sec-butyl-disulfide (17.62%). Umbelliprenin and ferulic acid were the major phenolic compounds in both extracts. Results of TGA and DSC revealed temperatures below and upper 100 °C and 160 °C as dominant regions of weight loss for gum and leaf extracts, respectively. Minimal inhibitory concentration for Escherichia coli, Staphylococcus aureus, Aspergillus niger, and Saccharomyces cerevisiae growth were 62.5, 62.5, 125, 125 mg/l and 400, 300, 50, 300 mg/l of leaf and gum extracts, respectively. Ferula asafoetida extracts can have particular applications in the food industry due to beneficial biological activity.
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Microbiological Advances in Bioactives from High Altitude. MICROBIOLOGICAL ADVANCEMENTS FOR HIGHER ALTITUDE AGRO-ECOSYSTEMS & SUSTAINABILITY 2020. [DOI: 10.1007/978-981-15-1902-4_17] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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Farias KS, Kato NN, Boaretto AG, Weber JI, Brust FR, Alves FM, Tasca T, Macedo AJ, Silva DB, Carollo CA. Nectandra as a renewable source for (+)-α-bisabolol, an antibiofilm and anti-Trichomonas vaginalis compound. Fitoterapia 2019; 136:104179. [DOI: 10.1016/j.fitote.2019.104179] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2019] [Revised: 05/17/2019] [Accepted: 05/18/2019] [Indexed: 12/29/2022]
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Khwairakpam AD, Damayenti YD, Deka A, Monisha J, Roy NK, Padmavathi G, Kunnumakkara AB. Acorus calamus: a bio-reserve of medicinal values. J Basic Clin Physiol Pharmacol 2018; 29:107-122. [PMID: 29389665 DOI: 10.1515/jbcpp-2016-0132] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2016] [Accepted: 10/25/2017] [Indexed: 11/15/2022]
Abstract
Many plants are found to possess reliable pharmacological properties and have started to attract the attention of researchers. One such holistic plant is Acorus calamus, commonly known as sweet flag, belonging to the rhizomatous family Acoraceae. The different parts of this plant, such as the leaves and rhizomes, are used traditionally in different medicinal preparations for the treatment of various ailments including arthritis, neuralgia, diarrhoea, dyspepsia, kidney and liver troubles, eczema, sinusitis, asthma, fevers, bronchitis, hair loss, and other disorders. Many reports have also appeared in mainstream scientific journals confirming its nutritional and medicinal properties. Biochemical analysis of the plant has revealed a large number of secondary metabolites that may be responsible for its rich medicinal properties. Basic scientific research has uncovered the mechanisms by which itexerts its therapeutic effects. Medicinal herbs such as A. calamus are quite promising in the recent therapeutic scenario, with a large number of people favouring remedies and health approaches that are free from the side effects often associated with synthetic chemicals. In this review, we try to summarise the ethno-medicinal uses, botanical descriptions, phytochemical constituents, and biological activity of the plant parts, as well as the molecular targets of A. calamus, which we hope will serve as a good base for further work on this plant.
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Affiliation(s)
- Amrita Devi Khwairakpam
- Cancer Biology Laboratory and DBT-AIST International Laboratory for Advanced Biomedicine (DAILAB), Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati, Assam-781039, India
| | - Yengkhom Devi Damayenti
- Cancer Biology Laboratory and DBT-AIST International Laboratory for Advanced Biomedicine (DAILAB), Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati, Assam-781039, India
| | - Anindita Deka
- Cancer Biology Laboratory and DBT-AIST International Laboratory for Advanced Biomedicine (DAILAB), Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati, Assam-781039, India
| | - Javadi Monisha
- Cancer Biology Laboratory and DBT-AIST International Laboratory for Advanced Biomedicine (DAILAB), Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati, Assam-781039, India
| | - Nand Kishor Roy
- Cancer Biology Laboratory and DBT-AIST International Laboratory for Advanced Biomedicine (DAILAB), Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati, Assam-781039, India
| | - Ganesan Padmavathi
- Cancer Biology Laboratory and DBT-AIST International Laboratory for Advanced Biomedicine (DAILAB), Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati, Assam-781039, India
| | - Ajaikumar B Kunnumakkara
- Cancer Biology Laboratory and DBT-AIST International Laboratory for Advanced Biomedicine (DAILAB), Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati, Assam-781039, India, Phone: +91 361 258 2231 (office), +91 789 600 5326 (mobile), Fax: +91 361 258 2249 (office), E-mail:
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Verma RS, Padalia RC, Chauhan A, Upadhyay RK, Singh VR. Optimization of distillation conditions for better recovery ofAcorus calamusL. essential oil. JOURNAL OF ESSENTIAL OIL RESEARCH 2016. [DOI: 10.1080/10412905.2016.1222973] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Joshi RK, Satyal P, Setzer WN. Himalayan Aromatic Medicinal Plants: A Review of their Ethnopharmacology, Volatile Phytochemistry, and Biological Activities. MEDICINES (BASEL, SWITZERLAND) 2016; 3:E6. [PMID: 28930116 PMCID: PMC5456235 DOI: 10.3390/medicines3010006] [Citation(s) in RCA: 53] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/24/2015] [Revised: 01/28/2016] [Accepted: 02/03/2016] [Indexed: 12/26/2022]
Abstract
Aromatic plants have played key roles in the lives of tribal peoples living in the Himalaya by providing products for both food and medicine. This review presents a summary of aromatic medicinal plants from the Indian Himalaya, Nepal, and Bhutan, focusing on plant species for which volatile compositions have been described. The review summarizes 116 aromatic plant species distributed over 26 families.
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Affiliation(s)
- Rakesh K Joshi
- Department of Education, Government of Uttrakhand, Nainital 263001, India.
| | - Prabodh Satyal
- Department of Chemistry, University of Alabama in Huntsville, Huntsville, AL 35899, USA.
| | - Wiliam N Setzer
- Department of Chemistry, University of Alabama in Huntsville, Huntsville, AL 35899, USA.
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Bernardos A, Marina T, Žáček P, Pérez-Esteve É, Martínez-Mañez R, Lhotka M, Kouřimská L, Pulkrábek J, Klouček P. Antifungal effect of essential oil components against Aspergillus niger when loaded into silica mesoporous supports. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2015; 95:2824-31. [PMID: 25428206 DOI: 10.1002/jsfa.7022] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/27/2014] [Revised: 11/03/2014] [Accepted: 11/21/2014] [Indexed: 05/14/2023]
Abstract
BACKGROUND Essential oil components (EOCs) are known for their antifungal properties; however, their high volatility limits their application as antimicrobial agents. Strategies used for controlling the volatility of EOCs include encapsulation or loading into porous materials. This study evaluated the in vitro antifungal activity of selected EOCs (carvacrol, cinnamaldehyde, eugenol and thymol) against the fungus Aspergillus niger when loaded into MCM-41 and β-cyclodextrin (β-CD). RESULTS Carvacrol and thymol in Mobil Composition of Matter No. 41 (MCM-41) displayed remarkable enhanced antifungal properties in comparison to the pure or β-CD-encapsulated EOCs. In fact, carvacrol and thymol were able to maintain antifungal activity and inhibit fungal growth for 30 days, suggesting better applicability of these EOCs as natural preservatives. CONCLUSIONS The sustained antifungal effect of EOCs encapsulated into silica mesoporous supports was described.
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Affiliation(s)
- Andrea Bernardos
- Department of Crop Production, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences Prague, Kamýcká 129, Prague 6-Suchdol 165 21, Czech Republic
| | - Teresa Marina
- Department of Quality of Agricultural Products, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences Prague, Kamýcká 129, Prague 6-Suchdol 165 21, Czech Republic
| | - Petr Žáček
- Research Team of Infochemicals, Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Flemingovo nám. 2, 16610, Prague 6, Czech Republic
| | - Édgar Pérez-Esteve
- Centro de Reconocimiento Molecular y Desarrollo Tecnológico (IDM), Unidad Mixta Universitat Politècnica de València, Universitat de València, Camino de Vera s/n, E-46022, Valencia, Spain
- Grupo de Investigación e Innovación Alimentaria (CUINA), Universitat Politècnica de València, Camino de Vera s/n, E-46022, Valencia, Spain
| | - Ramón Martínez-Mañez
- Centro de Reconocimiento Molecular y Desarrollo Tecnológico (IDM), Unidad Mixta Universitat Politècnica de València, Universitat de València, Camino de Vera s/n, E-46022, Valencia, Spain
- CIBER de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), Monforte de Lemos 3-5, Pabellón 11, 28029, Madrid, Spain
| | - Miloslav Lhotka
- Department of Inorganic Technology, Faculty of Chemical Technology, Institute of Chemical Technology, Technická 5, 16628, Prague 6, Czech Republic
| | - Lenka Kouřimská
- Department of Quality of Agricultural Products, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences Prague, Kamýcká 129, Prague 6-Suchdol 165 21, Czech Republic
| | - Josef Pulkrábek
- Department of Crop Production, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences Prague, Kamýcká 129, Prague 6-Suchdol 165 21, Czech Republic
| | - Pavel Klouček
- Department of Quality of Agricultural Products, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences Prague, Kamýcká 129, Prague 6-Suchdol 165 21, Czech Republic
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Chemical Composition of Root Essential Oil of Acorus calamus L. NATIONAL ACADEMY SCIENCE LETTERS-INDIA 2014. [DOI: 10.1007/s40009-014-0304-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Mancini E, Camele I, Elshafie HS, De Martino L, Pellegrino C, Grulova D, De Feo V. Chemical Composition and Biological Activity of the Essential Oil ofOriganum vulgaressp.hirtumfrom Different Areas in the Southern Apennines (Italy). Chem Biodivers 2014; 11:639-51. [DOI: 10.1002/cbdv.201300326] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2013] [Indexed: 11/07/2022]
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Abstract
This review deals with the art of (anatomical) embalming. The first part contains a brief historical review of the history of embalming, starting with ancient cultures such as the Egyptians and the lesser known Chinchorro culture, then going down the centuries and describing the anatomical techniques developed over the last two centuries. The second part deals in detail with the chemicals used for embalming purposes. The third part deals with several approaches to evaluating embalming methods, their suitability for biomechanical testing, antimicrobial properties, histological appearance, and usability. The fourth and final part analyze the European Biocidal Products Directive (98/8/EC) in the light of embalming.
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Affiliation(s)
- Erich Brenner
- Division for Clinical and Functional Anatomy, Department of Anatomy, Histology and Embryology, Innsbruck Medical UniversityInnsbruck, Austria
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Abstract
Neuropathic pain is a common and very prevalent disorder affecting the citizens of both developed and developing countries. The approved and licensed drugs for neuropathic pain are reported to have associated side effects. Traditional plant treatments have been used throughout the world for the treatment of neuropathic pain. Among the many medications and other alternative medicines, several herbs are known to cure and control neuropathic pain with no side effects. The present paper discusses the plants with neuropathic pain and related beneficial effects originating from different parts of world that are of current interest.
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Hammer N, Löffler S, Feja C, Sandrock M, Schmidt W, Bechmann I, Steinke H. Ethanol-glycerin fixation with thymol conservation: a potential alternative to formaldehyde and phenol embalming. ANATOMICAL SCIENCES EDUCATION 2012; 5:225-33. [PMID: 22434588 DOI: 10.1002/ase.1270] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/14/2011] [Revised: 01/20/2012] [Accepted: 02/07/2012] [Indexed: 05/10/2023]
Abstract
Anatomical fixation and conservation are required to prevent specimens from undergoing autolysis and decomposition. While fixation is the primary arrest of the structures responsible for autolysis and decomposition, conservation preserves the state of fixation. Although commonly used, formaldehyde has been classified as carcinogenic to humans. For this reason, an adequate substitute was developed. Ethanol-glycerin fixation and thymol conservation are described and compared with formaldehyde and phenol in this technical report. The setup, tissue qualities, financial aspects, and health concerns of this method are discussed. Ethanol-glycerin fixation and thymol conservation provide outstanding haptic and optic tissue qualities. Typical formaldehyde and phenol effects, such as skin, airway, and eye irritation, as well as carcinogenic effects, can be circumvented by using ethanol-glycerin and thymol instead. Ethanol-glycerin fixation is more expensive than formaldehyde and requires an explosion-proof facility. However, the absence of health effects and its convincing tissue qualities balance these higher costs. Therefore, ethanol-glycerin fixation and thymol conservation provide a potential alternative and complement established fixation techniques. The use of carcinogenic formaldehyde and toxic phenol can be effectively restricted through the use of the described method.
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Affiliation(s)
- Niels Hammer
- Institute of Anatomy, University of Leipzig, Faculty of Medicine, Leipzig, Germany
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