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Phytochemical composition of the essential oil of different populations of Stachys lavandulifolia Vahl

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Asian Pacific Journal of Tropical Biomedicine 2013年第2期3卷 123-128页

作者： Abdollah Ghasemi Pirbalouti Maryam Mohammadi Shahrekord Branch Islamic Azad UniversityDepartment of Medicinal Plants Stockbridge School of Agriculture College of Natural SciencesUniversity of Massachusetts

Objective:To examine the chemical variability in inflorescences of wild populations of Stachys lavandulifolia Vahl(***)collected throughout two provinces(lsfahan and Chaharmahal va Bakhtiary),Southwest ***:The essential oils of *** Vahl from seven locations were obtained by hydro-distillation and analysed by gas chromatography and gas chromatography-mass ***:The results revealed that distinct differences in the content of compounds depending on region of sample *** main constituents of the essential oils wereα-thujone(0.3%-32.3%),α-pinene(trace to 37.3%),myrcene(0.5%-15.9%),β-phellandrene(1.1%-37.9%),germacrene D(0.4%-11.3%),△-cadinene(trace to 11.6%)and 1,4-methano-1 H-indene(trace to 10.1%).Conclusions:The results of the present study indicated that essential oil components of *** Vahl can be varied with genetic(ecotype),environmental conditions and geographic origin,In general,the essential oils of various populations of *** Vahl were rich in monoterpenoids and sesquiterpenoids.

关键词： Stachys lavandulifolia Vahl Lamiaceae Essential oil α-thujene α-pinene β-phellandrene Chemotype

Gems from traditional north-African medicine: medicinal and aromatic plants from Sudan

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Natural Products and Bioprospecting 2012年第3期2卷 92-103页

作者： Hassan KHALID Wail Elsadig ABDALLA Haider ABDELGADIR Till OPATZ Thomas EFFERTH The medicinal and aromatic plants Research Institute(MAPRI) National Centre for ResearchMac Nimr StreetKhartoumSudan Institute of Organic Chemistry Johannes Gutenberg UniversityDuesbergweg 10-1455128 MainzGermany Department of Pharmaceutical Biology Institute of Pharmacy and BiochemistryJohannes Gutenberg UniversityStaudinger Weg 555128 MainzGermany

Sudanese folk medicine represents a unique blend of indigenous cultures with Islamic,Arabic and African *** addition,Sudan encompasses different terrains and climatic zones,ranging from desert and semi-desert in the north to equatorial with a short rainy season(semi-aridand semi-humid)in the centre to equatorial with a long rainy season(arid-humid and equatorial-humid)in the *** variation contributes to the immense diversity of vegetation in the *** flora of Sudan consists of 3137 species of flowering plants belonging to 170 families and 1280 *** is estimated that 15%of these plants are endemic to *** intersection of diverse cultures and the unique geography holds great potential for Sudanese herbal *** and aromatic plants and their derivatives represent an integral part of life in *** remedies are the only form of therapy available to the majority of poor *** has been estimated that only 11%of the population has access to formal health ***,research on the desired pharmacological effects and possible unwanted side effects or toxicity is required to improve efficacy and safety of Sudanese herbal *** the future,it would be preferable to promote the use of traditional herbal remedies by conversion of raw plant material into more sophisticated products instead of completely replacing the traditional remedies with synthetic products from industrialized *** present review gives an overview of traditional Sudanese medicinal and aromatic herbs and their habitats,traditional uses,and phytochemical constituents.

关键词： herbal medicine natural products pharmacognosy phytochemistry phytotherapy traditional medicine

A comprehensive review on mechanism of natural products against Staphylococcus aureus

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Journal of Future Foods 2022年第1期2卷 25-33页

作者： Yingying Zhao Jinfeng Wei Changqin Li Adel F.Ahmed Zhenhua Liu Changyang Ma National R&D Center for Edible Fungus Processing Technology Henan UniversityKaifeng 475004China Henan Kaifeng College of Science Technology and Communication(Minsheng College Henan University)Kaifeng 475004China Functional Food Engineering Technology Research Center of Henan Province Kaifeng 475004China medicinal and aromatic plants researches Department Horticulture Research InstituteAgricultural Research CenterCairo 11435Egypt Joint International Research Laboratory of Food&Medicine Resource Function of Henan Province Henan UniversityKaifeng 475004China

The abuse of antibiotics seriously threatens the therapeutic *** products from plants,antimicrobial peptides and micro-organisms have antibacterial activity against Staphylococcus *** mechanism of natural products reported in recent years on *** includes six types,which are the acting on bacterial cell wall,cytomembrane,metabolic pathway,protein,nucleic acid,biofilm and quorum sensing system to achieve antibacterial *** article summarized the mechanism of natural products reported in recent years on *** is found that the natural products acting on cell wall or cell wall synthesis pathway key enzymes are relatively safe and highly *** has the prospect of developing into medicine and provides the clue to investigate and utilize natural products in antibacterial activity.

关键词： Natural products Staphylococcus aureus Antibacterial mechanism Enzymes Cell wall

In Vitro Hyphal Growth Inhibition of Plant Pathogenic Fungi by Corrigiola Telephiifolia Extracts

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Journal of Environmental Science and Engineering 2010年第5期4卷 42-48页

作者： H. Lakmichi F.Z. Bakhtaoui K. Loutfi C.A. Gadhi Unit of Phytochemistry and Pharmacology of aromatic and medicinal plants Faculty of Sciences Semlalia Cadi Ayyad University Marrakesh Morocco Laboratory of Plant Physiology Faculty of Sciences Semlalia Cadi Ayyad University Marrakesh Morocco.

The sugar beet root rot and Bayoud disease, respectively caused by Sclerotium rolfsii and Fusarium oxysporum albedinis, are major agricultural problems in Morocco, affecting its economical and social conditions. As of now, no effective control method of these phytopathogens is available. Therefore the search for new efficient and ecologically undamaging fungicides was essential. The present study reports the antifungal activity of five organic extracts of Corrigiola telephiifolia Pourr., a Moroccan medicinal plant, against these fungi using mycelial growth inhibition assays （in vitro）. The extracts concentration varied from 0.01 to 1 ***. Also, preliminary information on the chemical composition of the extracts is included. The results showed a difference in sensitivity of both fungi toward the plant extracts. The mycelia growth of Sclerotium rolfsii was concentration and time-dependant. It was markedly inhibited by the polar extracts especially at high dose （p〈 0.001）. While Fusarium oxysporum f. sp. albedinis was much less sensitive.

关键词： Biofungicide corrigiola telephiifolia fitsarium oxysporum sclerotium rolfsii kinetic study.

Physico-chemical and elemental investigation of aqueous leaching of high sulfur coal and mine overburden from Ledo coalfield of Northeast India

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International Journal of Coal Science & Technology 2018年第3期5卷 265-281页

作者： Madhulika Dutta Puja Khare Sanchita Chakravarty Durlov Saikia Binoy K. Saikia Polymer Petroleum and Coal Chemistry Group Materials Sciences and Technology Division CSIR-North East Institute of Science and Technology Jorhat 785006 India School of Applied Sciences Department of Chemistry University of Science and TechnologyRibhoi 793101 Meghalaya India Department of Chemistry CNB College Bokakhat 785612India Agrotechnology Division CSIR- Central Institute of Medicinal and Aromatic Plants Lucknow 226015 India Analytical Chemistry Division CSIR- National Metallurgical Laboratory Jamshedpur 831007 India

Acid mine drainage （AMD） is one of the major problems in high sulfur coal mining areas generating acidic water. The acidic mine water generated contain hazardous elements in varying concentrations. The Northeastern Indian coalfield produces considerable amounts of AMD. The AMD and metal leaching from coal and mine over burden （OB） are the two important naturally occurring processes. In order to know the AMD potential, the aqueous leaching experiment of a few coal and OB samples from the Ledo colliery of the Northeastern coalfield, Mergherita （India）, at different time periods （1, 3, 5, and 8 h） and at different temperatures （25, 45, 65, and 90℃） were performed in the laboratory. The physico- chemical analysis of the aqueous leachates shows the pH, electrical conductivity （EC）, and total dissolved solid （TDS） in the range of 1.62-3.52, 106-2006 μs/cm, and 106-1003 ppm for the raw coal samples respectively. The OB samples produced pH, EC, and TDS in the range of 3.68-6.92, 48.6-480 μs/cm, and 69.5-240 ppm respectively. From the study, it was revealed that the concentrations of major （Si, A1, K, Na, Fe, Ca, Mg）, minor （Mn） and trace/hazardous elements （As, Ba, Cd, Co, Cr, Cu, Hg, Ni, Pb, Se, Zn） considerably change with leaching time as well as with leaching temperature. Out of these elements As, Cd, Hg, Pb, Cr, and Se are of greater environmental importance. Alteration of the physico-chemical structure of the coal and OB samples resulting from leaching was also studied by field emission scanning electron microscope- energy-dispersive X-ray spectroscopy method. The release of the potentially hazardous elements from the raw coal and OB during leaching time periods to the leachates was detected by inductively coupled plasma-atomic emission spectroscopy and ion-chromatographic analyses. The major minerals found in coal and OB are quartz （SiO2）, pyrite （FeS2）, hematite, marcasite, and kaolinite. The association of different functional groups in minerals and their mode of a

关键词： AMD High sulfur coal Coal mine overburden Aqueous leaching Elements in coal and OB Coal qualityassessment

Insight into DNA protection ability of medicinal herbs and potential mechanisms in hydrogen peroxide damages model

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Asian Pacific Journal of Tropical Biomedicine 2018年第2期8卷 120-129页

作者： Zahra Sabahi Fatemeh Soltani Mahmoodreza Moein medicinal plants Processing Research Center Shiraz University of Medical Sciences Biotechnology Research Center Institute of Pharmaceutical Technology Mashhad University of Medical Sciences Department of Pharmacognosy School of Pharmacy Shiraz University of Medical Sciences

DNA damage is one of the most important consequences of oxidative stress in the cells. If DNA repair is unable to modify these inducible DNA damages, genomic instability may lead to mutation, cancer, aging and many other diseases. Single cell gel electrophoresis or comet assay is a common and versatile method to quantify these types of DNA damages. DNA damages induced by hydrogen peroxide(H_2O_2) are one of the proper models for measurement of protective ability of different compounds. So the main aim of this review is to provide an overview about protection ability of medicinal plants and their potential mechanism against H_2O_2 induced DNA damages. In this review, relevant researches on the effect of medicinal plants on DNA damages induced by H_2O_2 and possible molecular mechanisms are *** seems that, medicinal plants are considered as therapeutic key factors to protect DNA from consequences caused by oxidative stress. Sufficient in vitro evidences introduce them as DNA protective agents through different mechanisms including antioxidant activity and some other cellular mechanisms. Moreover, in order to correlate the antigenotoxicity effects with their potential antioxidant property, most of medicinal plants were evaluated in term of antioxidant activity using standard methods. This review highlights the preventive effects of herbal medicine against oxidative DNA damages as well as provides rational possibility to engage them in animal studies and future clinical investigations.

关键词： Herbal medicine DNA damage Comet assay Hydrogen peroxide Single cell gel electrophoresis

Chemical composition and larvicidal activity of essential oil of Origanum majorana(Lamiaceae) cultivated in Morocco against Culex pipiens(Diptera:Culicidae)

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Asian Pacific Journal of Tropical Biomedicine 2014年第9期4卷 746-750页

作者： Fouad El-Akhal Abdelhakim El Ouali Lalami Yassine Ez Zoubi Hassane Greche Raja Guemmouh Regional Diagnostic Laboratory Epidemiological and Environmental Hygiene Regional Health DirectorateEL Ghassani HospitalFezMorocco Sidi Mohamed Ben Abdellah University Faculty of Sciences Dhar El MahrazLaboratory Analysis and Modelling of Ecosystems ContinentalsFezMorocco National Institute of medicinal and aromatic plants Sidi Mohamed Ben Ahdellah University.FezMorocco

Objective:To evaluate the larvicidal activity of essential oil of Origanum mtijoruna(Lamiaceae)cultivated in Morocco against Culex pipiens(Diptera:Culicidae).Methods:The analysis and the identification of the various constituents of essential oil were carried out by gas chromatography coupled with mass *** test was performed according to a standard methodology inspired by the World Health Organization protocol with slight ***:This oil mainly consisted of monoterpene and *** majority compounds are 4-terpinene(28.96%),y-terpinene(18.57%),α-terpinene(12.72%) and sabinene(8.02%).The lethal concentrations(LC_(50) and LC_(90)) measured for the essential oil Origanum majorana,were respectively of the order of 258.71 mg/L and 580.49 mg/***:The results could be useful in search for newer,safer,and more effective natural larvicidal agents.

关键词： Essential oil Origanum majorana Culex pipiens Larvicidal activity Morocco Fez

Syntheses, Crystal Structures and Antitumor Activities of Two Nicotinamides

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Chinese Journal of Structural Chemistry 2013年第5期32卷 631-636页

作者：王智樊一桥罗丹梦石磊 Department of medicinal Chemistry China Pharmaceutical University

Two nicotinamides have been synthesized by coupling aromatic amines with equimolar quantities of substituted nicotinic acids. Their structures have been determined by X-ray single-crystal diffraction. Compound 1, 6-chloro-N-（4-fluorophenyl）nicotinamide, crystallizes in the triclinic space group Pī with a = 4.2188（8） , b = 5.0687（10）, c = 25.956（5）, α = 86.38（3）, β = 87.75（3）, γ = 83.20（3）°, V = 549.75（19） 3 and Z = 2. Compound 2, N-（quinolin-3-yl）nico- tinamide, crystallizes in the monoclinic space group P21 with a = 8.5100（17）, b = 6.4230（13）, c = 11.620（2） , β = 110.39（3）°, V = 595.3（2） 3 and Z = 2. The cytotoxic activities of the two nicotinamides against five human tumor cell lines were tested in vitro. The results indicated that they showed a wide range of antitumor activities.

关键词： synthesis crystal structure antitumor nicotinamide

Ce(Ⅲ)-modulation over non-enzymatic Pt/CeO_(2)/GO biosensor with outstanding sensitivity and stability for lactic acid detection

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稀土学报:英文版 2023年第9期41卷 1437-1447,I0006页

作者： Luyao Zhang Fuli Tian Huan Li Jiangman Meng Qi Liu Xiaoqian Guo Yun Qiu Jun Zhang Changyan Li College of Chemistry and Chemical Engineering.Inner Mongolia University Hohhot 010021China Key Laboratory of medicinal and Edible plants Resources of Hainan Province Hainan Vocational University of Science and TechnologyHaikou 571126China Department of Materials Science and Engineering Southern University of Science and TechnologyShenzhen 518055China

A series of non-enzymatic graphene functionalized biosensors was developed via deposition precipitation method for lactic acid(LA) detection,which we re characterized by transmission electron micro scopy(TEM),Raman spectroscopy,X-ray photoelectron spectroscopy(XPS),gas chromatography-mass spectrometry,liquid chromatography-mass spectro metry,and proton nuclear magnetic re sonance(~1H NMR).The electrochemical performances of the non-enzymatic biosensors were measured by means of the electrochemical impedance spectroscopy(EIS) and cyclic voltammetry(CV) *** comprehensive analysis of structures shows that Pt,CeO_(2),and GO components interact with each *** the storing and releasing oxygen,the valence ratio of Ce^(3+)/Ce^(4+) and the number of oxygen vacancies in CeO_(2) change accordingly,which can be conducive to increasing electronic transmission capacity and finally leads to the improvement of electrocatalytic *** them,the Pt/CeO_(2)/GO biosensor containing 0.47 at% platinum exhibits an excellent electrochemical detection performance with high sensitivity of 12.3 μA·L/(mmol·cm^(2)) and a low limit of detection(LOD) of 5.12 μmol/L in a wide linear range from 10 to 900 μmol/*** addition,the proposed biosensor possesses a promising anti-interference capability,as well as high stability and good reproducibility,which was assessed by testing the cyclic voltammogram in 0.1 mol/L lactic acid one year *** underlying mechanism was proposed for electrochemical oxidation of LA to carbon dioxide and acetic acid with the synergistic effect among Pt,CeO_(2),and ***,the results of the standard addition method in real samples(human serum and urine samples) reveal that the lactic acid detection of the non-enzymatic Pt/CeO_(2)/GO biosensor is accompanied by high ***,it will be a valuable biosensor for in vitro detection of lactic acid level in clinical samples.

关键词： Non-enzymatic biosensor Lactic acid Graphene functionalized Pt/CeO_(2) Oxygen vacancy Synergistic effect Rare earths