1
|
Lagnika L, Avosse SI, Bouraima FO, Sindedji CB, Dakle M, Gueret R, Fort L, Gimbert Y, Napporn TW, Zigah D, Aubouy A, Maisonhaute E. Voltammetric techniques for low-cost on-site routine analysis of thymol in the medicinal plant Ocimum gratissimum. Talanta 2024; 269:125411. [PMID: 38008023 DOI: 10.1016/j.talanta.2023.125411] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Accepted: 11/13/2023] [Indexed: 11/28/2023]
Abstract
The composition of essential oils varies according to culture conditions and climate, which induces a need for simple and inexpensive characterization methods close to the place of extraction. This appears particularly important for developing countries. Herein, we develop an analytical strategy to determine the thymol content in Ocimum Gratissimum, a medicinal plant from Benin. The protocol is based on electrochemical techniques (cyclic and square wave voltammetry) implemented with a low cost potentiostat. Thymol is a phenol derivative and was directly oxidized at the electrode surface. We had to resort to submillimolar concentrations (25-300 μM) in order to minimize production of phenol oligomers that passivate the electrode. We worked first on two essential oils and realized that in one of them the thymol concentration was below our detection method. These results were confirmed by gas chromatography - mass spectrometry. Furthermore, we optimized the detection protocol to analyze an infusion made directly from the leaves of the plant. Finally, we studied whether the cost of the electrochemical cell may also be minimized by using pencil lead as working and counter electrodes.
Collapse
Affiliation(s)
- Latifou Lagnika
- Laboratoire de Biochimie et Substances Naturelles Bioactives, Faculté des Sciences et Techniques, Université d'Abomey-Calavi, Abomey-Calavi, Benin.
| | - Solange Imelda Avosse
- Laboratoire de Biochimie et Substances Naturelles Bioactives, Faculté des Sciences et Techniques, Université d'Abomey-Calavi, Abomey-Calavi, Benin
| | - Faridath Oyélékan Bouraima
- Laboratoire de Biochimie et Substances Naturelles Bioactives, Faculté des Sciences et Techniques, Université d'Abomey-Calavi, Abomey-Calavi, Benin
| | - Candide Bidossessi Sindedji
- Laboratoire de Biochimie et Substances Naturelles Bioactives, Faculté des Sciences et Techniques, Université d'Abomey-Calavi, Abomey-Calavi, Benin
| | - Mathieu Dakle
- Laboratoire de Biochimie et Substances Naturelles Bioactives, Faculté des Sciences et Techniques, Université d'Abomey-Calavi, Abomey-Calavi, Benin
| | - Rodolphe Gueret
- Département de Chimie Moléculaire - DCM UMR 5250, CNRS/Université Grenoble Alpes, UGA, 38000 Grenoble, France
| | - Laure Fort
- Département de Chimie Moléculaire - DCM UMR 5250, CNRS/Université Grenoble Alpes, UGA, 38000 Grenoble, France
| | - Yves Gimbert
- Département de Chimie Moléculaire - DCM UMR 5250, CNRS/Université Grenoble Alpes, UGA, 38000 Grenoble, France; Institut Parisien de Chimie Moléculaire, CNRS UMR 8232, Sorbonne Université, 4 Place Jussieu, F-75252, Paris, Cedex5, France
| | - Teko W Napporn
- Institut de Chimie des Milieux et Matériaux de Poitiers (IC2MP), Université de Poitiers, CNRS, F-86073, Poitiers, France
| | - Dodzi Zigah
- Institut de Chimie des Milieux et Matériaux de Poitiers (IC2MP), Université de Poitiers, CNRS, F-86073, Poitiers, France
| | - Agnès Aubouy
- UMR152 PHARMADEV, Toulouse University, IRD, UPS, France; Institut de Recherche Clinique du Bénin (IRCB), Abomey Calavi, Benin.
| | - Emmanuel Maisonhaute
- Sorbonne Université, CNRS, Laboratoire Interfaces et Systèmes Electrochimiques, 4 Place Jussieu, F-75252, Paris, Cedex5, France.
| |
Collapse
|
2
|
Pham BTT, Hoang HNT, Trinh CD, Bui QTP, Phung TK, Nguyen TT. Development of gelatin/agarose active coatings functionalized with Ocimum gratissimum L. essential oil for enhancing storability of 'Booth 7' avocado. Int J Biol Macromol 2023; 253:127516. [PMID: 37866575 DOI: 10.1016/j.ijbiomac.2023.127516] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Revised: 09/19/2023] [Accepted: 10/04/2023] [Indexed: 10/24/2023]
Abstract
Novel active coating from gelatin/agarose (GA) functionalized with Ocimum gratissimum L. essential oil (OGO) had been developed as a medium to evaluate their properties before being applied for avocado preservation. The resultant coating films showed enhanced mechanical, water-barrier, bactericidal, antioxidant, and UV-shielding properties by adding OGO. The best tensile strength (2.91 MPa) and flexibility (45.82 %) was found in the GA film containing 5 % (w/w) of OGO (GA-OGO-5). Furthermore, this coating formulation presented moderate antibacterial activities against Listeria, Pseudomonas, Salmonella, and Escherichia. The GA-OGO-5 coating film also divulged the highest hydrophobicity and adequate antioxidant function (30.75 μg/mL) and thus, was chosen to coat on 'Booth 7' avocados by dipping method. The GA-OGO-5 coating layers were to be efficient to decline the respiration rate of avocado during 6-day storage at 25 °C and 64 %RH. Peel color, weight loss (5.22 %), total soluble solids (8.14 %), and solution pH (6.79) at the end of storage also indicated that the GA-OGO-5 coating presented the best effectiveness for enhancing the storability of avocado as compared to uncoated and GA-treated fruit. Therefore, the GA-OGO coating has been considered as an alternative post-harvest technique to enhance the avocado storability and could be further commercialized for industry application.
Collapse
Affiliation(s)
- Bao-Tran Tran Pham
- Institute of Technology Application and Sustainable Development, Nguyen Tat Thanh University, Ho Chi Minh City, Viet Nam; Faculty of Environmental and Food Engineering, Nguyen Tat Thanh University, Ho Chi Minh City, Viet Nam
| | - Hong-Nhung Thi Hoang
- Faculty of Chemical Engineering, Ho Chi Minh City University of Food Industry, Ho Chi Minh City, Viet Nam
| | | | - Quynh Thi Phuong Bui
- Faculty of Chemical Engineering, Ho Chi Minh City University of Food Industry, Ho Chi Minh City, Viet Nam
| | - Thanh Khoa Phung
- Department of Chemical Engineering, School of Chemical and Environmental Engineering, International University, Ho Chi Minh City, Viet Nam; Vietnam National University, Ho Chi Minh, Viet Nam
| | - Thuong Thi Nguyen
- Institute of Technology Application and Sustainable Development, Nguyen Tat Thanh University, Ho Chi Minh City, Viet Nam; Faculty of Environmental and Food Engineering, Nguyen Tat Thanh University, Ho Chi Minh City, Viet Nam.
| |
Collapse
|
3
|
Agbodjento E, Lègba B, Dougnon VT, Klotoé JR, Déguénon E, Assogba P, Koudokpon H, Hanski L, Baba-Moussa L, Yayi Ladékan E. Unleashing the Potential of Medicinal Plants in Benin: Assessing the Status of Research and the Need for Enhanced Practices. PLANTS (BASEL, SWITZERLAND) 2023; 12:1506. [PMID: 37050132 PMCID: PMC10097054 DOI: 10.3390/plants12071506] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/24/2023] [Revised: 03/25/2023] [Accepted: 03/27/2023] [Indexed: 06/19/2023]
Abstract
Medicinal plants play a crucial role in the primary health care of the population in developing countries such as Benin. The national universities of Benin conduct research on the pharmacological, toxicological, and phytochemical properties of these plants, but the resulting knowledge often does not lead to the development of phytomedicines for the improvement of public health. This study aims to assess the current status of research on medicinal plants in Benin. A literature review was conducted using various search engines, and the collected data was analyzed. The results indicate that research on the biological properties of medicinal plants is still in its early stages, with limited and inadequate methodological approaches. These limitations highlight the urgent need to enhance research practices and facilitate the development of effective and safe phytomedicines.
Collapse
Affiliation(s)
- Eric Agbodjento
- Research Unit in Applied Microbiology and Pharmacology of Natural Substances, Research Laboratory in Applied Biology, Polytechnic School of Abomey-Calavi, University of Abomey-Calavi, Cotonou 01 PB 2009, Benin
| | - Boris Lègba
- Research Unit in Applied Microbiology and Pharmacology of Natural Substances, Research Laboratory in Applied Biology, Polytechnic School of Abomey-Calavi, University of Abomey-Calavi, Cotonou 01 PB 2009, Benin
| | - Victorien Tamègnon Dougnon
- Research Unit in Applied Microbiology and Pharmacology of Natural Substances, Research Laboratory in Applied Biology, Polytechnic School of Abomey-Calavi, University of Abomey-Calavi, Cotonou 01 PB 2009, Benin
| | - Jean Robert Klotoé
- Research Unit in Applied Microbiology and Pharmacology of Natural Substances, Research Laboratory in Applied Biology, Polytechnic School of Abomey-Calavi, University of Abomey-Calavi, Cotonou 01 PB 2009, Benin
| | - Esther Déguénon
- Research Unit in Applied Microbiology and Pharmacology of Natural Substances, Research Laboratory in Applied Biology, Polytechnic School of Abomey-Calavi, University of Abomey-Calavi, Cotonou 01 PB 2009, Benin
| | - Phénix Assogba
- Research Unit in Applied Microbiology and Pharmacology of Natural Substances, Research Laboratory in Applied Biology, Polytechnic School of Abomey-Calavi, University of Abomey-Calavi, Cotonou 01 PB 2009, Benin
| | - Hornel Koudokpon
- Research Unit in Applied Microbiology and Pharmacology of Natural Substances, Research Laboratory in Applied Biology, Polytechnic School of Abomey-Calavi, University of Abomey-Calavi, Cotonou 01 PB 2009, Benin
| | - Leena Hanski
- Drug Research Program, Division of Pharmaceutical Biosciences, Faculty of Pharmacy, University of Helsinki, 00100 Helsinki, Finland
| | - Lamine Baba-Moussa
- Laboratory of Biology and Molecular Typing in Microbiology, Department of Biochemistry and Cellular Biology, Faculty of Sciences and Techniques, University of Abomey-Calavi, Cotonou 05 PB 1604, Benin
| | - Eléonore Yayi Ladékan
- Laboratory of Pharmacognosy and Essential Oils, Faculty of Sciences and Techniques, University of Abomey-Calavi, Cotonou 01 PB 188, Benin
| |
Collapse
|
4
|
Chemical Profile and Biological Activities of Essential Oil from Piper arboreum for Development and Improvement of Mouthwash. Molecules 2022; 27:molecules27196408. [PMID: 36234949 PMCID: PMC9572885 DOI: 10.3390/molecules27196408] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2022] [Revised: 09/22/2022] [Accepted: 09/23/2022] [Indexed: 11/16/2022] Open
Abstract
Studies show that more consumers are using natural health products in the modern world. We have noticed a growing demand in markets and the professional community for mouthwashes that contain natural compounds. The objective of this study was to assess the chemical characterization and microbiological potential of the essential oil Piper arboreum (EOPa) to provide data to enable the development of a low-cost mouthwash. The evaluation of the antibacterial and bacterial resistance modulating activity was performed by the microdilution method to determine the minimum inhibitory concentration. The chemical components were characterized by gas chromatography coupled with mass spectrometry, which identified 20 chemical constituents, with caryophyllene oxide being one of the major compounds. The EOPa showed an MIC ≥ 1024 µg/mL for all bacterial strains used in the tests. When evaluating the modulating activity of EOPa combined with chlorhexidine, mouthwash and antibiotics against the bacterial resistance, the oil limited synergistic activity between the MIC of the products tested in combination (37% to 87.5%). Therefore, we recommend expanding the tests with greater variation in the EOPa concentration and the products used, as well as toxicity assessments and in vivo testing, with the purpose of the development of a possible low-cost mouthwash base that is accessible to the most vulnerable populations.
Collapse
|
5
|
Jepsen T, Jensen B, Jørgensen NOG. Volatiles produced by Streptomyces spp. delay rot in apples caused by Colletotrichum acutatum. CURRENT RESEARCH IN MICROBIAL SCIENCES 2022; 3:100121. [PMID: 35909604 PMCID: PMC9325864 DOI: 10.1016/j.crmicr.2022.100121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2021] [Revised: 02/18/2022] [Accepted: 02/20/2022] [Indexed: 11/24/2022] Open
Abstract
Volatile organic compounds (VOCs) produced by Streptomyces have antifungal properties. Streptomyces VOCs reduced growth of the fungus Colletotrichum acutatum biomass. Apples infected by C. acutatum had reduced rot when incubated with Streptomyces. Biofumigation by Streptomyces VOCs may help inhibit postharvest rot in fruits.
Volatile organic compounds (VOCs) produced by microorganisms may prevent postharvest rot in fruits. Here, it was examined if VOCs from different species of Streptomyces can control infection in apples caused by the fungal pathogen Colletotrichum acutatum. Incubation of C. acutatum-infected apples in semi-closed boxes with actively growing strains of three Streptomyces (S. coelicolor, S. diastatochromogenes and Streptomyces strain 2R) showed that VOCs reduced rot areas of the apples by 45-66% after 8 days and 39-57% after 10 days, relative to infected apples incubated without Streptomyces. No differences in inhibition among the three strains were seen. In contrast, a mutant strain of Streptomyces that lacks major genes involved in biosynthesis of secondary metabolites, did not reduce development of rot in the apples. Furthermore, Streptomyces VOCs reduced radial hyphal growth of C. acutatum on agar. Several of the VOCs produced by three Streptomyces strains have previously shown fungicidal properties. Although the specific VOCs being active in inhibition of C. acutatum remain to be determined, VOCs may have a great potential as biofumigants to minimize postharvest diseases in fruits.
Collapse
|
6
|
Chemical Composition and Preliminary Toxicity Evaluation of the Essential Oil from Peperomia circinnata Link var. circinnata. ( Piperaceae) in Artemia salina Leach. Molecules 2021; 26:molecules26237359. [PMID: 34885940 PMCID: PMC8659193 DOI: 10.3390/molecules26237359] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2021] [Revised: 11/25/2021] [Accepted: 11/30/2021] [Indexed: 01/19/2023] Open
Abstract
Peperomia Ruiz and Pav, the second largest genus of the Piperaceae, has over the years shown potential biological activities. In this sense, the present work aimed to carry out a seasonal and circadian study on the chemical composition of Peperomia circinata essential oils and aromas, as well as to evaluate the preliminary toxicity in Artemia salina Leach and carry out an in silico study on the interaction mechanism. The chemical composition was characterized by gas chromatography (GC/MS and GC-FID). In the seasonal study the essential oil yields had a variation of 1.2–7.9%, and in the circadian study the variation was 1.5–5.6%. The major compounds in the seasonal study were β-phellandrene and elemicin, in the circadian they were β-phellandrene and myrcene, and the aroma was characterized by the presence of β-phellandrene. The multivariate analysis showed that the period and time of collection influenced the essential oil and aroma chemical composition. The highest toxicity value was observed for the essential oil obtained from the dry material, collected in July with a value of 14.45 ± 0.25 μg·mL−1, the in silico study showed that the major compounds may be related to potential biological activity demonstrated by the present study.
Collapse
|
7
|
Ugbogu OC, Emmanuel O, Agi GO, Ibe C, Ekweogu CN, Ude VC, Uche ME, Nnanna RO, Ugbogu EA. A review on the traditional uses, phytochemistry, and pharmacological activities of clove basil ( Ocimum gratissimum L.). Heliyon 2021; 7:e08404. [PMID: 34901489 PMCID: PMC8642617 DOI: 10.1016/j.heliyon.2021.e08404] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Revised: 07/29/2021] [Accepted: 11/11/2021] [Indexed: 01/03/2023] Open
Abstract
In traditional medicine, Ocimum gratissimum (clove basil) is used in the treatment of various diseases such as diabetes, cancer, inflammation, anaemia, diarrhoea, pains, and fungal and bacterial infections. The present study reviewed the phytochemicals, essential oils, and pharmacological activities of O. gratissimum. The bioactive compounds extracted from O. gratissimum include phytochemicals (oleanolic acid, caffeic acid, ellagic acid, epicatechin, sinapic acid, rosmarinic acid, chlorogenic acid, luteolin, apigenin, nepetoidin, xanthomicrol, nevadensin, salvigenin, gallic acid, catechin, quercetin, rutin, and kaempfero) and essential oils (camphene, β-caryophyllene, α- and β-pinene, α-humulene, sabinene, β-myrcene, limonene, 1,8-cineole, trans-β-ocimene, linalool, α- and δ-terpineol, eugenol, α-copaene, β-elemene, p-cymene, thymol, and carvacrol). Various in vivo and in vitro studies have shown that O. gratissimum and its bioactive constituents possess pharmacological properties such as antioxidant, anti-inflammatory, anticancer, hepatoprotective, antidiabetic, antihypertensive, antidiarrhoeal, and antimicrobial properties. This review demonstrated that O. gratissimum has a strong preventive and therapeutic effect against several diseases. The effectiveness of O. gratissimum to ameliorate various diseases may be attributed to its antimicrobial and antioxidant properties as well as its capacity to improve the antioxidant systems. However, despite the widespread pharmacological activities of O. gratissimum, further experiments in human clinical trial studies are needed to establish effective and safe doses for the treatment of various diseases.
Collapse
Affiliation(s)
| | - Okezie Emmanuel
- Department of Biochemistry, Abia State University, PMB 2000, Uturu, Abia State, Nigeria
| | - Grace Oka Agi
- Department of Human Nutrition and Dietetics, University of Ibadan, Nigeria
| | - Chibuike Ibe
- Department of Microbiology, Abia State University, Uturu, PMB 2000, Uturu, Abia State, Nigeria
| | - Celestine Nwabu Ekweogu
- Department of Medical Biochemistry, Imo State University, PMB 2000, Owerri, Imo State, Nigeria
| | - Victor Chibueze Ude
- Department of Medical Biochemistry, College of Medicine Enugu State University of Science and Technology, PMB 01660, Enugu, Nigeria
| | - Miracle Ebubechi Uche
- Department of Biochemistry, Abia State University, PMB 2000, Uturu, Abia State, Nigeria
| | | | | |
Collapse
|
8
|
Sounouvou HT, Toukourou H, Catteau L, Toukourou F, Evrard B, Van Bambeke F, Gbaguidi F, Quetin-Leclercq J. Antimicrobial potentials of essential oils extracted from West African aromatic plants on common skin infections. SCIENTIFIC AFRICAN 2021. [DOI: 10.1016/j.sciaf.2021.e00706] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
|
9
|
Vega Gomez MC, Rolón M, Coronel C, Pereira Carneiro JN, Lucas dos Santos AT, Almeida-Bezerra JW, Almeida de Menezes S, Everson da Silva L, Melo Coutinho HD, do Amaral W, Ribeiro-Filho J, Bezerra Morais-Braga MF. Antiparasitic effect of essential oils obtained from two species of Piper L. native to the Atlantic forest. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2021. [DOI: 10.1016/j.bcab.2021.101958] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
|
10
|
Oliveira BMSD, Blank AF, Nizio DADC, Nogueira PCDL, Arrigoni-Blank MDF, Bacci L, Melo CR, Nascimento LFDA, Sampaio TS. Chemical analyses of the essential oils from Varronia curassavica accessions in two seasons. JOURNAL OF ESSENTIAL OIL RESEARCH 2020. [DOI: 10.1080/10412905.2020.1789001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
| | - Arie Fitzgerald Blank
- Department of Agricultural Engineering, Federal University of Sergipe , São Cristóvão, Brazil
| | | | | | | | - Leandro Bacci
- Department of Agricultural Engineering, Federal University of Sergipe , São Cristóvão, Brazil
| | - Carlisson Ramos Melo
- Department of Agricultural Engineering, Federal University of Sergipe , São Cristóvão, Brazil
| | | | - Taís Santos Sampaio
- Department of Agricultural Engineering, Federal University of Sergipe , São Cristóvão, Brazil
| |
Collapse
|
11
|
Chemical Composition and Antimicrobial Effectiveness of Ocimum gratissimum L. Essential Oil Against Multidrug-Resistant Isolates of Staphylococcus aureus and Escherichia coli. Molecules 2019; 24:molecules24213864. [PMID: 31717766 PMCID: PMC6864855 DOI: 10.3390/molecules24213864] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2019] [Revised: 10/20/2019] [Accepted: 10/21/2019] [Indexed: 12/16/2022] Open
Abstract
The study investigated the antimicrobial activity of the essential oil extract of Ocimum gratissimum L. (EOOG) against multiresistant microorganisms in planktonic and biofilm form. Hydrodistillation was used to obtain the EOOG, and the analysis of chemical composition was done by gas chromatography coupled with mass spectrometry (GC/MS) and flame ionization detection (GC/FID). EOOG biological activity was verified against isolates of Staphylococcus aureus and Escherichia coli, using four strains for each species. The antibacterial action of EOOG was determined by disk diffusion, microdilution (MIC/MBC), growth curve under sub-MIC exposure, and the combinatorial activity with ciprofloxacin (CIP) and oxacillin (OXA) were determined by checkerboard assay. The EOOG antibiofilm action was performed against the established biofilm and analyzed by crystal violet, colony-forming unit count, and SEM analyses. EOOG yielded 1.66% w/w, with eugenol as the major component (74.83%). The MIC was 1000 µg/mL for the most tested strains. The growth curve showed a lag phase delay for both species, mainly S. aureus, and reduced the growth level of E. coli by half. The combination of EOOG with OXA and CIP led to an additive action for S. aureus. A significant reduction in biofilm biomass and cell viability was verified for S. aureus and E. coli. In conclusion, EOOG has relevant potential as a natural alternative to treat infections caused by multiresistant strains.
Collapse
|
12
|
Patra JK, Das G, Lee S, Kang SS, Shin HS. Selected commercial plants: A review of extraction and isolation of bioactive compounds and their pharmacological market value. Trends Food Sci Technol 2018. [DOI: 10.1016/j.tifs.2018.10.001] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
|
13
|
Yarou BB, Bawin T, Boullis A, Heukin S, Lognay G, Verheggen FJ, Francis F. Oviposition deterrent activity of basil plants and their essentials oils against Tuta absoluta (Lepidoptera: Gelechiidae). ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2018; 25:29880-29888. [PMID: 28785944 DOI: 10.1007/s11356-017-9795-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2017] [Accepted: 07/19/2017] [Indexed: 05/12/2023]
Abstract
The leafminer Tuta absoluta Meyrick (Lepidoptera: Gelechiidae) is one of the most important pests of tomato, reducing crop yields by up to 100% in greenhouses and fields, in several countries globally. Because synthetic insecticides lead to resistance and have adverse effects on natural enemies and the health of producers, alternative control methods are needed. In this study, we assessed the oviposition-deterring effect of basil plants, Ocimum gratissimum L. and O. basilicum L. (Lamiaceae), using dual-choice behavioural assays performed in flight tunnels. We found that both plants significantly reduced T. absoluta oviposition behaviour on a tomato plant located nearby. To evaluate the potential effect of basil volatile organic compounds, we formulated essential oils of both plant species in paraffin oil, and observed a similar oviposition-deterring effect. Gas chromatography analyses detected 18 constituents in these essential oils which the major constituents included thymol (33.3%), p-cymene (20.4%), γ-terpinene (16.9%), myrcene (3.9%) in O. gratissimum and estragol (73.8%), linalool (8.6%), β-elemene (2.9%) and E-β-ocimene (2.6%) in O. basilicum. Twenty and 33 compounds were identified of the volatiles collected on O. gratissimum and O. basilicum plants, respectively. The main components include the following: p-cymene (33.5%), γ-terpinene (23.6%), α-terpinene (7.2%), α-thujene (6.7%) and E-α-bergamotene (38.9%) in O. gratissimum, and methyl eugenol (26.1%), E-β-ocimene (17.7%), and linalool (9.4%) in O. basilicum. Four compounds (α-pinene, β-pinene, Myrcene, Limonene) were common in essential oils and plants. Our results suggest the valuable potential of basil and associated essential oils as a component of integrated management strategies against the tomato leafminer.
Collapse
Affiliation(s)
- Boni Barthélémy Yarou
- Functional and Evolutionary Entomology, Agro Biochem Department, Gembloux Agro-bio Tech, University of Liege (ULg), Passage des Déportés, 2, 5030, Gembloux, Belgium.
| | - Thomas Bawin
- Functional and Evolutionary Entomology, Agro Biochem Department, Gembloux Agro-bio Tech, University of Liege (ULg), Passage des Déportés, 2, 5030, Gembloux, Belgium
| | - Antoine Boullis
- Functional and Evolutionary Entomology, Agro Biochem Department, Gembloux Agro-bio Tech, University of Liege (ULg), Passage des Déportés, 2, 5030, Gembloux, Belgium
| | - Stéphanie Heukin
- Analytical Chemistry, Agro Biochem Department, Gembloux Agro-bio Tech, University of Liege (ULg), Passage des Déportés, 2, 5030, Gembloux, Belgium
| | - Georges Lognay
- Analytical Chemistry, Agro Biochem Department, Gembloux Agro-bio Tech, University of Liege (ULg), Passage des Déportés, 2, 5030, Gembloux, Belgium
| | - François Jean Verheggen
- Functional and Evolutionary Entomology, Agro Biochem Department, Gembloux Agro-bio Tech, University of Liege (ULg), Passage des Déportés, 2, 5030, Gembloux, Belgium
| | - Frédéric Francis
- Functional and Evolutionary Entomology, Agro Biochem Department, Gembloux Agro-bio Tech, University of Liege (ULg), Passage des Déportés, 2, 5030, Gembloux, Belgium
| |
Collapse
|
14
|
Chimnoi N, Reuk-Ngam N, Chuysinuan P, Khlaychan P, Khunnawutmanotham N, Chokchaichamnankit D, Thamniyom W, Klayraung S, Mahidol C, Techasakul S. Characterization of essential oil from Ocimum gratissimum leaves: Antibacterial and mode of action against selected gastroenteritis pathogens. Microb Pathog 2018; 118:290-300. [PMID: 29578062 DOI: 10.1016/j.micpath.2018.03.041] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2017] [Revised: 03/20/2018] [Accepted: 03/21/2018] [Indexed: 02/06/2023]
Abstract
Essential oil of fresh leaves of Ocimum gratissimum (OGEO) was water-steam distilled and analyzed by GC-MS. Thirty-seven compounds were identified, with eugenol (55.6%) as the major component followed by cis-ocimene (13.9%), γ-muurolene (11.6%), (Z,E)-α-farnesene (5.6%), α-trans-bergamotene (4.1%), and β-caryophyllene (2.7%). Antimicrobial activity of OGEO was tested against four gastroenteritis pathogens (Staphylococcus aureus, Escherichia coli, Salmonella Typhimurium, and Shigella flexneri). OGEO exhibited antibacterial effect, with MICs of 1-2 mg ml-1, against the tested species. OGEO also displayed rapid killing effect within 5 s at four times of MIC against both E. coli and S. Typhimurium. Various assays were performed to investigate the mode of action of the oil. OGEO increased the permeability of microbial cell membrane as evidenced by LIVE/DEAD BacLight assay. Analyses of the release of absorbing materials at 260 nm, protein leakage, SDS-PAGE, and SEM strongly suggested the disruptive action of the oil on the cytoplasmic membrane of the tested microorganisms. Results revealed that the antibacterial property of OGEO could be due to membrane disruption.
Collapse
Affiliation(s)
- Nitirat Chimnoi
- Laboratory of Natural Products, Chulabhorn Research Institute, 54 Kamphaeng Phet 6, Talat Bang Khen, Lak Si, Bangkok 10210, Thailand
| | - Nanthawan Reuk-Ngam
- Laboratory of Organic Synthesis, Chulabhorn Research Institute, 54 Kamphaeng Phet 6, Talat Bang Khen, Lak Si, Bangkok 10210, Thailand
| | - Piyachat Chuysinuan
- Laboratory of Organic Synthesis, Chulabhorn Research Institute, 54 Kamphaeng Phet 6, Talat Bang Khen, Lak Si, Bangkok 10210, Thailand
| | - Panita Khlaychan
- Laboratory of Organic Synthesis, Chulabhorn Research Institute, 54 Kamphaeng Phet 6, Talat Bang Khen, Lak Si, Bangkok 10210, Thailand
| | - Nisachon Khunnawutmanotham
- Laboratory of Organic Synthesis, Chulabhorn Research Institute, 54 Kamphaeng Phet 6, Talat Bang Khen, Lak Si, Bangkok 10210, Thailand
| | - Daranee Chokchaichamnankit
- Laboratory of Biochemistry, Chulabhorn Research Institute, 54 Kamphaeng Phet 6, Talat Bang Khen, Lak Si, Bangkok 10210, Thailand
| | - Wassapol Thamniyom
- Office of Research, Chulabhorn Research Institute, 54 Kamphaeng Phet 6, Talat Bang Khen, Lak Si, Bangkok 10210, Thailand
| | - Srikanjana Klayraung
- Department of Biology, Faculty of Science, Maejo University, Chiang Mai 50290, Thailand
| | - Chulabhorn Mahidol
- Laboratory of Natural Products, Chulabhorn Research Institute, 54 Kamphaeng Phet 6, Talat Bang Khen, Lak Si, Bangkok 10210, Thailand
| | - Supanna Techasakul
- Laboratory of Organic Synthesis, Chulabhorn Research Institute, 54 Kamphaeng Phet 6, Talat Bang Khen, Lak Si, Bangkok 10210, Thailand.
| |
Collapse
|
15
|
Wu W, Liu F, Davis RW. Engineering Escherichia coli for the production of terpene mixture enriched in caryophyllene and caryophyllene alcohol as potential aviation fuel compounds. Metab Eng Commun 2018; 6:13-21. [PMID: 29349039 PMCID: PMC5767561 DOI: 10.1016/j.meteno.2018.01.001] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2017] [Revised: 12/23/2017] [Accepted: 01/02/2018] [Indexed: 11/26/2022] Open
Abstract
Recent studies have revealed that caryophyllene and its stereoisomers not only exhibit multiple biological activities but also have desired properties as renewable candidates for ground transportation and jet fuel applications. This study presents the first significant production of caryophyllene and caryolan-1-ol by an engineered E. coli with heterologous expression of mevalonate pathway genes with a caryophyllene synthase and a caryolan-1-ol synthase. By optimizing metabolic flux and fermentation parameters, the engineered strains yielded 449 mg/L of total terpene, including 406 mg/L sesquiterpene with 100 mg/L caryophyllene and 10 mg/L caryolan-1-ol. Furthermore, a marine microalgae hydrolysate was used as the sole carbon source for the production of caryophyllene and other terpene compounds. Under the optimal fermentation conditions, 360 mg/L of total terpene, 322 mg/L of sesquiterpene, and 75 mg/L caryophyllene were obtained from the pretreated algae hydrolysates. The highest yields achieved on the biomass basis were 48 mg total terpene/g algae and 10 mg caryophyllene/g algae and the caryophyllene yield is approximately ten times higher than that from plant tissues by solvent extraction. The study provides a sustainable alternative for production of caryophyllene and its alcohol from microalgae biomass as potential candidates for next generation aviation fuels. E. coli was engineered to yield terpene enriched in caryophyllene and caryolan-1-ol. Yields were improved through metabolic flux and culture parameters optimization. Algae hydrolysate was converted to terpene at high yields using engineered strains.
Collapse
Affiliation(s)
- Weihua Wu
- Department of Biomass Science & Conversion Technologies, Sandia National Laboratories, 7011 East Avenue, Livermore, CA, USA
| | - Fang Liu
- Department of Biomass Science & Conversion Technologies, Sandia National Laboratories, 7011 East Avenue, Livermore, CA, USA
| | - Ryan W Davis
- Department of Biomass Science & Conversion Technologies, Sandia National Laboratories, 7011 East Avenue, Livermore, CA, USA
| |
Collapse
|
16
|
Babarinde SA, Pitan OOR, Ajala MO, Olatunde GO. Insectifugal and insecticidal potentials of two tropical botanical essential oils against cowpea seed bruchid. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2017; 24:19785-19794. [PMID: 28685336 DOI: 10.1007/s11356-017-9589-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2016] [Accepted: 06/20/2017] [Indexed: 06/07/2023]
Abstract
Essential oils (EO) obtained from Xylopia parviflora root bark and Hoslundia opposita leaf via hydro distillation were analysed by GC-MS and evaluated for their insectifugal (repellent) and insecticidal activities against cowpea seed bruchid (Callosbruchus maculatus Fabricius), a cosmopolitan pest of cowpea seeds. X. parviflora was predominated by sesquiterpenes (59.57%), with the main compounds being β-himachalene (22.68%), 1,7,7,Trimethylbicyclo[2.2.1]hept-5-en-2-ol (19.68%), β-elemene (14.41%), 5(1H)-Azulenone, 2,4,6,7,8,8a-hexahydro-3,8-dimethyl-4-(1-methylethylidene)-(85-cis)- (12.38%) and (-)-α-parasinsen (8.34%). The predominant compounds in H. opposita EO were 1,8-cineole (61.15%), followed by α-terpineol (16.81%) and β-phellandrene (13.25%). Percentage repellence at application rates of 0.66-1.32 μl/cm2 (46.93-73.07%) was significantly (p < 0.05) higher than that of control (17.73%). RD50 (repellence dose for 50% of treated adults) for H. opposita (0.43 μl/cm2) was not significantly different from the value for X. parviflora (0.60 μl/cm2). Although higher percentage of male mortality than female mortality was observed due to topical application of the EOs, the disparity was not significant. The results of correlation of the chemical groups of the EOs with the insectifugal activity indicate that the observed bioactivity was due to the synergistic effects of the chemical groups. The two EOs are therefore recommended for incorporation into bruchid protection schemes in the tropics.
Collapse
Affiliation(s)
- Samuel Adelani Babarinde
- Department of Crop and Environmental Protection, Ladoke Akintola University of Technology, Ogbomoso, Nigeria.
| | | | - Michael Oluwole Ajala
- Department of Plant Breeding and Seed Technology, Federal University of Agriculture, Abeokuta, Nigeria
| | | |
Collapse
|
17
|
Intorasoot A, Chornchoem P, Sookkhee S, Intorasoot S. Bactericidal activity of herbal volatile oil extracts against multidrug-resistant Acinetobacter baumannii. JOURNAL OF COMPLEMENTARY MEDICINE RESEARCH 2017; 6:218-222. [PMID: 28512603 PMCID: PMC5429082 DOI: 10.5455/jice.20170411091159] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2017] [Accepted: 04/11/2017] [Indexed: 11/17/2022]
Abstract
Aim: The aim of the study is to investigate the antibacterial activity of 10 volatile oils extracted from medicinal plants, including galangal (Alpinia galanga Linn.), ginger (Zingiber officinale), plai (Zingiber cassumunar Roxb.), lime (Citrus aurantifolia), kaffir lime (Citrus hystrix DC.), sweet basil (Ocimum basilicum Linn.), tree basil (Ocimum gratissimum), lemongrass (Cymbopogon citratus DC.), clove (Syzygium aromaticum), and cinnamon (Cinnamomum verum) against four standard strains of Staphylococcus aureus, Escherichia coli, Pseudomonas aeruginosa, Acinetobacter baumannii, and 30 clinical isolates of multidrug-resistant A. baumannii (MDR-A. baumannii). Materials and Methods: Agar diffusion, minimum inhibitory concentration, and minimum bactericidal concentration (MBC) were employed for the determination of bactericidal activity of water distilled medicinal plants. Tea tree oil (Melaleuca alternifolia) was used as positive control in this study. Results: The results indicated the volatile oil extracted from cinnamon exhibited potent antibacterial activity against the most common human pathogens, S. aureus, E. coli, P. aeruginosa, and A. baumannii. Most of volatile oil extracts were less effective against non-fermentative bacteria, P. aeruginosa. In addition, volatile oil extracted from cinnamon, clove, and tree basil possessed potent bactericidal activity against MDR-A. baumannii with MBC90 of 0.5, 1, and 2 mg/mL, respectively. Conclusions: The volatile oil extracts would be useful as alternative natural product for the treatment of the most common human pathogens and MDR-A. baumannii infections.
Collapse
Affiliation(s)
- Amornrat Intorasoot
- Department of Microbiology, Faculty of Medicine, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Piyaorn Chornchoem
- Department of Microbiology, Faculty of Medicine, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Siriwoot Sookkhee
- Department of Microbiology, Faculty of Medicine, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Sorasak Intorasoot
- Department of Medical Technology, Division of Clinical Microbiology, Faculty of Associated Medical Sciences, Chiang Mai University, Chiang Mai 50200, Thailand
| |
Collapse
|
18
|
Larvicidal efficacy and chemical constituents of O. gratissimum L. (Lamiaceae) essential oil against Aedes albopictus Skuse (Diptera: Culicidae). Parasitol Res 2016; 115:673-80. [PMID: 26462801 DOI: 10.1007/s00436-015-4786-3] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2015] [Accepted: 10/06/2015] [Indexed: 10/23/2022]
Abstract
The current study accentuates the use of botanicals as an alternative to the chemical compounds in vector control by estimating the mosquito larvicidal potential of Ocimum gratissimum L. leaf essential oil against the fourth instar larvae of Aedes albopictus Skuse (Diptera: Culicidae). The chemical composition of essential oil from leaves was evaluated using gas chromatography-mass spectrometry (GC/MS) analysis. GC/MS revealed that the essential oil of O. gratissimum contained 51 compounds. The major chemical constituents identified were 3-allyl-6-methoxyphenol (19.30%), 4-(5-ethenyl-1-azabicyclo (2, 2, 2) octan-2) (16.82%), 1-(2, 5-dimethoxyphenyl)-propanol (12.23%) and 1-(1-hydroxybutyl)-2, 5-dimethoxybenzene (5.53%). The essential oil showed pertinent larvicidal effect, and the LC50 value in 24 h was 26.10 ppm (LC90 = 82.83 ppm). Aromatic plants and their essential oils are very important sources of many compounds that are used for different applications, and they are more promising pesticides or insecticides for control of mosquito populations than synthetic ones. The results of the present investigation justify the larvicidal potential of leaf essential oil of O. gratissimum as a safer and more effective larvicide against A. albopictus.
Collapse
|
19
|
Wu W, Davis RW. One-pot bioconversion of algae biomass into terpenes for advanced biofuels and bioproducts. ALGAL RES 2016. [DOI: 10.1016/j.algal.2016.05.005] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
|
20
|
Isman MB. Pesticides Based on Plant Essential Oils: Phytochemical and Practical Considerations. ACS SYMPOSIUM SERIES 2016. [DOI: 10.1021/bk-2016-1218.ch002] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Murray B. Isman
- Faculty of Land and Food Systems, University of British Columbia, Vancouver, British Columbia V6T1Z4, Canada
| |
Collapse
|
21
|
Füller TN, Bertrand C, Simon A, Inchausti de Barros IB, Barbosa Neto JF. Elionurus muticus as an alternative source of citral from Pampa biome, Brazil. J Oleo Sci 2014; 63:1109-16. [PMID: 25341500 DOI: 10.5650/jos.ess13234] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Elionurus muticus is a grass from Pampa biome and it is an excellent alternative as natural source of citral in southern Brazil. The essential oil has a high citral level (80%) and presents variability for other important chemical compounds. The present studies indicated its cytotoxic effect against Artemia salina and also suggested its application in the control of pathogenic fungi. E. muticus could become an alternative to synthetic fungicides for using in agro-industries and also to screen and develop novel types of selective and natural fungicides.
Collapse
|
22
|
Kpadonou Kpoviessi BGH, Kpoviessi SDS, Yayi Ladekan E, Gbaguidi F, Frédérich M, Moudachirou M, Quetin-Leclercq J, Accrombessi GC, Bero J. In vitro antitrypanosomal and antiplasmodial activities of crude extracts and essential oils of Ocimum gratissimum Linn from Benin and influence of vegetative stage. JOURNAL OF ETHNOPHARMACOLOGY 2014; 155:1417-1423. [PMID: 25058875 DOI: 10.1016/j.jep.2014.07.014] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2014] [Revised: 06/23/2014] [Accepted: 07/08/2014] [Indexed: 06/03/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Different parts of Ocimum gratissimum Linn are largely used in folk medicine for the treatment of many diseases, some of which related to parasitical infections as fevers and headaches. In order to validate their use and to clarify the plant part which possesses the best antiparasitic properties, we decided to evaluate the in vitro antiplasmodial and antitrypanosomal activities of essential oils and crude extracts from leaves, stems and seeds of Ocimum gratissimum as well as their cytotoxicity. MATERIALS AND METHODS The essential oils and ethanol crude extracts of leaves and stems of Ocimum gratissimum from Benin, were obtained in pre and full flowering stages. Seeds obtained only in full flowering stage, were also extracted. The oils were isolated by hydrodistillation and analyzed by GC/MS and GC/FID. Extracts and essential oils were tested in vitro against Trypanosoma brucei brucei and Plasmodium falciparum. Cytotoxicity was evaluated in vitro against Chinese Hamster Ovary (CHO) cells and the human non cancer fibroblast cell line (WI38) through MTT assay to evaluate the selectivity and toxicity was assessed against Artemia salina Leach. RESULTS The essential oils and non-volatile crude extracts of Ocimum gratissimum were more active on Trypanosoma brucei brucei than on Plasmodium falciparum (3D7). This activity varies according to the vegetative stage (pre and full flowering) and the plant part (seeds, stems and leaves) extracted. The best growth inhibition of Trypanosoma brucei brucei was observed with ethanol crude extracts of leaves (IC50=1.66 ± 0.48 μg/mL) and seeds (IC50=1.29 ± 0.42 μg/mL) in full flowering stage with good selectivity (SI>10). The chemical composition of the essential oil from aerial parts (47 compounds), characterized by the presence as main constituents of p-cymene, thymol, γ-terpinene, β-myrcene and α-thujene, depends on the vegetative stage. The oil contained some minor compounds such as myrcene (IC50=2.24 ± 0.27μg/mL), citronellal (IC50=2.76 ± 1.55μg/mL), limonene (IC50=4.24 ± 2.27μg/mL), with good antitrypanosomal activities. These oils and crude extracts were not toxic against Artemia salina Leach and had a low cytotoxicity except leaves and seeds ethanol extracts obtained in full flowering which showed toxicity against CHO and WI38 cells. CONCLUSIONS Our study shows that ethanol crude extracts of leaves and seeds of Ocimum gratissimum in full flowering stage can be a good source of antitrypanosomal agents. This is the first report about the relation between the plant part extracted, the vegetative stage of the plant, the antitrypanosomal and antiplasmodial activities and the cytotoxicity of essential oils and non-volatile extracts of Ocimum gratissimum from Benin.
Collapse
Affiliation(s)
- Bénédicta G H Kpadonou Kpoviessi
- Laboratory of Physic and Synthesis Organic Chemistry (LaCOPS), University of Abomey-Calavi, Faculty of Sciences and Technics (FAST), BP: 4521, Cotonou, Benin; National Laboratory of Pharmacognosy, Benin center of Scientific and Technical Research (CBRST), BP 06 Oganla, Porto-Novo, Benin
| | - Salomé D S Kpoviessi
- Laboratory of Physic and Synthesis Organic Chemistry (LaCOPS), University of Abomey-Calavi, Faculty of Sciences and Technics (FAST), BP: 4521, Cotonou, Benin; Pharmacognosy Research Group, Louvain Drug Research Institute, Université catholique de Louvain, B1.72.03 Av. E. Mounier 72, B-1200 Bruxelles, Belgium
| | - Eléonore Yayi Ladekan
- National Laboratory of Pharmacognosy, Benin center of Scientific and Technical Research (CBRST), BP 06 Oganla, Porto-Novo, Benin
| | - Fernand Gbaguidi
- National Laboratory of Pharmacognosy, Benin center of Scientific and Technical Research (CBRST), BP 06 Oganla, Porto-Novo, Benin
| | - Michel Frédérich
- Université de Liège, Drug Research Center, Laboratoire de Pharmacognosie, Av. de l׳Hôpital 1, B36, B-4000 Liège, Belgium
| | - Mansourou Moudachirou
- National Laboratory of Pharmacognosy, Benin center of Scientific and Technical Research (CBRST), BP 06 Oganla, Porto-Novo, Benin
| | - Joëlle Quetin-Leclercq
- Pharmacognosy Research Group, Louvain Drug Research Institute, Université catholique de Louvain, B1.72.03 Av. E. Mounier 72, B-1200 Bruxelles, Belgium
| | - Georges C Accrombessi
- Laboratory of Physic and Synthesis Organic Chemistry (LaCOPS), University of Abomey-Calavi, Faculty of Sciences and Technics (FAST), BP: 4521, Cotonou, Benin
| | - Joanne Bero
- Pharmacognosy Research Group, Louvain Drug Research Institute, Université catholique de Louvain, B1.72.03 Av. E. Mounier 72, B-1200 Bruxelles, Belgium.
| |
Collapse
|
23
|
Dias CN, Rodrigues KAF, Carvalho FAA, Carneiro SMP, Maia JGS, Andrade EHA, Moraes DFC. Molluscicidal and leishmanicidal activity of the leaf essential oil of Syzygium cumini (L.) SKEELS from Brazil. Chem Biodivers 2014; 10:1133-41. [PMID: 23776029 DOI: 10.1002/cbdv.201200292] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2012] [Indexed: 11/07/2022]
Abstract
The chemical composition and biological potential of the essential oil extracted from Syzygium cumini leaves collected in Brazil were examined. GC/MS Analyses revealed a high abundance of monoterpenes (87.12%) in the oil. Eleven compounds were identified, with the major components being α-pinene (31.85%), (Z)-β-ocimene (28.98%), and (E)-β-ocimene (11.71%). To evaluate the molluscicidal effect of the oil, it was tested against Biomphalaria glabrata and the LC₅₀ obtained was 90 mg/l. The essential oil also showed significant activity against Leishmania amazonensis, with an IC50 value equal to 60 mg/l. In addition, to evaluate its toxicity towards a non-target organism, the essential oil was tested against Artemia salina and showed a LC₅₀ of 175 mg/l. Thus, the essential oil of S. cumini showed promising activity as a molluscicidal and leishmanicidal agent and might be valuable in combating neglected tropical diseases such as schistosomiasis and leishmaniasis. Further research is being conducted with regard to the purification and isolation of the most active essential-oil compounds.
Collapse
Affiliation(s)
- Clarice N Dias
- Laboratory of Pharmacognosy, Department of Pharmacy, Federal University of Maranhão, 65085-580 São Luís, MA, Brazil.
| | | | | | | | | | | | | |
Collapse
|
24
|
Kpoviessi S, Bero J, Agbani P, Gbaguidi F, Kpadonou-Kpoviessi B, Sinsin B, Accrombessi G, Frédérich M, Moudachirou M, Quetin-Leclercq J. Chemical composition, cytotoxicity and in vitro antitrypanosomal and antiplasmodial activity of the essential oils of four Cymbopogon species from Benin. JOURNAL OF ETHNOPHARMACOLOGY 2013; 151:652-659. [PMID: 24269775 DOI: 10.1016/j.jep.2013.11.027] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2013] [Revised: 11/08/2013] [Accepted: 11/09/2013] [Indexed: 06/02/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Cymbopogon species are largely used in folk medicine for the treatment of many diseases some of which related to parasitical diseases as fevers and headaches. As part of our research on antiparasitic essential oils from Beninese plants, we decided to evaluate the in vitro antiplasmodial and antitrypanosomal activities of essential oils of four Cymbopogon species used in traditional medicine as well as their cytotoxicity. MATERIALS AND METHODS The essential oils of four Cymbopogon species Cymbopogon citratus (I), Cymbopogon giganteus (II), Cymbopogon nardus (III) and Cymbopogon schoenantus (IV) from Benin obtained by hydrodistillation were analysed by GC/MS and GC/FID and were tested in vitro against Trypanosoma brucei brucei and Plasmodium falciparum respectively for antitrypanosomal and antiplasmodial activities. Cytotoxicity was evaluated in vitro against Chinese Hamster Ovary (CHO) cells and the human non cancer fibroblast cell line (WI38) through MTT assay to evaluate the selectivity. RESULTS All tested oils showed a strong antitrypanosomal activity with a good selectivity. Sample II was the most active against Trypanosoma brucei brucei and could be considered as a good candidate. It was less active against Plasmodium falciparum. Samples II, III and IV had low or no cytotoxicity, but the essential oil of Cymbopogon citratus (I), was toxic against CHO cells and moderately toxic against WI38 cells and needs further toxicological studies. Sample I (29 compounds) was characterised by the presence as main constituents of geranial, neral, β-pinene and cis-geraniol; sample II (53 compounds) by trans-p-mentha-1(7),8-dien-2-ol, trans-carveol, trans-p-mentha-2,8-dienol, cis-p-mentha-2,8-dienol, cis-p-mentha-1(7),8-dien-2-ol, limonene, cis-carveol and cis-carvone; sample III (28 compounds) by β-citronellal, nerol, β-citronellol, elemol and limonene and sample IV (41 compounds) by piperitone, (+)-2-carene, limonene, elemol and β-eudesmol. CONCLUSIONS Our study shows that essential oils of Cymbopogon genus can be a good source of antitrypanosomal agents. This is the first report on the activity of these essential oils against Trypanosoma brucei brucei, Plasmodium falciparum and analysis of their cytotoxicity.
Collapse
Affiliation(s)
- Salomé Kpoviessi
- Laboratory of Physic and Synthesis Organic Chemistry (LaCOPS), University of Abomey-Calavi (UAC), Faculty of Sciences and Technics (FAST), BP: 4521 Cotonou, Benin; Pharmacognosy Research Group, Louvain Drug Research Institute, Université catholique de Louvain, B1 7203 Av. E. Mounier 72, B-1200 Bruxelles, Belgium; Laboratory of Pharmacognosy and Essential oils (LAPHE), University of Abomey-Calavi (UAC), Faculty of health Sciences (FSS), Faculty of Sciences et Technics (FAST), 01 BP: 188 Cotonou, Benin
| | - Joanne Bero
- Pharmacognosy Research Group, Louvain Drug Research Institute, Université catholique de Louvain, B1 7203 Av. E. Mounier 72, B-1200 Bruxelles, Belgium
| | - Pierre Agbani
- Laboratory of Applied Ecology (LEA), University of Abomey-Calavi (UAC), Faculty of Agronomic Sciences (FSA), 03 BP: 1974 Cotonou, Benin
| | - Fernand Gbaguidi
- Laboratory of Physic and Synthesis Organic Chemistry (LaCOPS), University of Abomey-Calavi (UAC), Faculty of Sciences and Technics (FAST), BP: 4521 Cotonou, Benin; Laboratory of Pharmacognosy and Essential oils (LAPHE), University of Abomey-Calavi (UAC), Faculty of health Sciences (FSS), Faculty of Sciences et Technics (FAST), 01 BP: 188 Cotonou, Benin
| | - Bénédicta Kpadonou-Kpoviessi
- Laboratory of Physic and Synthesis Organic Chemistry (LaCOPS), University of Abomey-Calavi (UAC), Faculty of Sciences and Technics (FAST), BP: 4521 Cotonou, Benin
| | - Brice Sinsin
- Laboratory of Applied Ecology (LEA), University of Abomey-Calavi (UAC), Faculty of Agronomic Sciences (FSA), 03 BP: 1974 Cotonou, Benin
| | - Georges Accrombessi
- Laboratory of Physic and Synthesis Organic Chemistry (LaCOPS), University of Abomey-Calavi (UAC), Faculty of Sciences and Technics (FAST), BP: 4521 Cotonou, Benin
| | - Michel Frédérich
- Université de Liège, Drug Research Center, Laboratoire de Pharmacognosie, Av. de l'Hôpital 1, B36, B-4000 Liège, Belgium
| | - Mansourou Moudachirou
- Laboratory of Pharmacognosy and Essential oils (LAPHE), University of Abomey-Calavi (UAC), Faculty of health Sciences (FSS), Faculty of Sciences et Technics (FAST), 01 BP: 188 Cotonou, Benin
| | - Joëlle Quetin-Leclercq
- Pharmacognosy Research Group, Louvain Drug Research Institute, Université catholique de Louvain, B1 7203 Av. E. Mounier 72, B-1200 Bruxelles, Belgium.
| |
Collapse
|
25
|
Adjou ES, Kouton S, Dahouenon-Ahoussi E, Soumanou MM, Sohounhloue DCK. Effect of essential oil from fresh leaves of Ocimum gratissimum L. on mycoflora during storage of peanuts in Benin. Mycotoxin Res 2013; 29:29-38. [PMID: 23334722 DOI: 10.1007/s12550-012-0150-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2012] [Revised: 10/13/2012] [Accepted: 10/16/2012] [Indexed: 12/18/2022]
Abstract
The aim of this study was to evaluate the effect of essential oil from fresh leaves of Sweet Fennel (Ocimum gratissimum) on mycoflora and Aspergillus section Flavi populations in stored peanuts. Aspergillus, Fusarium and Mucor spp. were the most common genera identified from peanuts at post-harvest in Benin by using a taxonomic schemes primarily based on morphological characters of mycelium and conidia. The isolated fungi include Aspergillus niger, A. parasiticus, A. flavus, A. ochraceus, Fusarium graminearum, F. solani, F. oxysporum and Mucor spp. The most prevalent fungi recorded were A. niger (94.18 %), A. flavus (83.72 %), A. parasiticus (77.90 %), A. ochraceus (72.09 %), F. graminearum (59.30 %) and F. oxysporum (51.16 %). Antifungal assay, performed by the agar medium assay, indicated that essential oil exhibited high antifungal activity against the growth of A. flavus, A. parasiticus, A. ochraceus and F. oxysporium. The minimal inhibitory concentration (MIC) of the essential oil was found to be 7.5 μl/ml for A. flavus and A. parasiticus and 5.5 μl/ml for A. ochraceus and F. oxysporium. The minimal fungicidal concentration (MFC) was recorded to be 8.0 μl/ml for A. flavus and A. parasiticus, 6,5 μl/ml for A. ochraceus and 6.0 μl/ml for F. oxysporium. The essential oil was found to be strongly fungicidal and inhibitory to aflatoxin production. Chemical analysis by GC/MS of the components of the oil led to the identification of 31 components characterized by myrcene (6.4 %), α-thujene (8.2 %), p-cymene (17.6 %), γ-terpinene (20.0 %), and thymol (26.9 %) as major components. The essential oil of Sweet Fennel, with fungal growth and mycotoxin inhibitory properties, offers a novel approach to the management of storage, thus opening up the possibility to prevent mold contamination in stored peanuts.
Collapse
Affiliation(s)
- Euloge S Adjou
- Laboratory of Research and Study in Applied Chemistry, Polytechnic School of Abomey-Calavi, University of Abomey-Calavi, 01 P.O.B: 2009, Cotonou, Benin
| | | | | | | | | |
Collapse
|
26
|
Ng ZX, Kuppusamy UR, Poh R, Tajunisah I, Koay ACA, Fong KCS, Chua KH. Lack of association between Gly82Ser, 1704G/T and 2184A/G of RAGE gene polymorphisms and retinopathy susceptibility in Malaysian diabetic patients. GENETICS AND MOLECULAR RESEARCH 2012; 11:455-61. [PMID: 22427038 DOI: 10.4238/2012.march.1.2] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Diabetic retinopathy is the most common diabetic eye disease, occurring in about 60% of type 2 diabetic patients. Other than known clinical risk factors, the influence of genes has been suggested as part of the development of diabetic retinopathy. We investigated the association of Gly82Ser, 1704G/T and 2184A/G polymorphisms in the RAGE gene with retinopathy in type 2 diabetic patients in Malaysia. Ninety-eight unrelated retinopathy patients and 185 unrelated healthy controls from all over Malaysia were recruited in this study. The allele and genotype frequencies of the three gene polymorphisms were investigated using PCR-RFLP. The allele frequency of the three polymorphisms did not differ significantly between the control and the retinopathy group (P > 0.05). Analysis of the frequency of GA+AA, GT+TT and AG+GG in the retinopathy group did not reveal significant differences (P > 0.05) compared to the control group. We conclude that RAGE gene Gly82Ser, 1704G/T and 2184A/G polymorphisms are not associated with retinopathy development in the Malaysian population.
Collapse
Affiliation(s)
- Z X Ng
- Department of Molecular Medicine, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
| | | | | | | | | | | | | |
Collapse
|