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Antimicrobial activities of the tissue extracts of Babylonia spirata Linnaeus,1758 (Mollusca:Gastropoda) from Thazhanguda,southeast coast of India

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Asian Pacific Journal of Tropical Biomedicine 2012年第1期2卷 36-40页

作者： periyasamy n Srinivasan M Balakrishnan S Centre of Advanced Study in Marine Biology Faculty of Marine SciencesAnnamalai University

Objective:To investigate the antimicrobial activity of the tissue extracts of Babylonia spirata(***)against nine bacterial and three fungal ***:Crude extract of gastropod was tested for inhibition of bacterial and fungal *** assay was carried out by disc diffusion method and in vitro antifungal activity was determined against Czapex Dox *** antimicrobial activity was measured accordingly based on the inhibition zone around the disc impregnated with gastropod *** size of muscle protein was determined using sodium dodecyl sulfate polyacrylamide gel electrophoresis(SDS-PAGE).And fourier transform infrared spectroscopy(FT1R)spectro photometry analysis was also ***:The maximum inhibition zone(12 mm)was observed against Pseudomonas aeruginosa in the crude ethanol extract of *** and the minimum inhibition zone(2 mm)was noticed against Staphylococcus aureus in the crude methanol extract of *** extract of *** showed the highest activity against Vibrio parahaemolyticus,Staphylococcus aureus and Candida ***,acetone,methanol,chloroform and water extracts showed antimicrobial activity against almost all the bacteria and *** with water extracts,ethanol and methanol extracts showed higher activity against all *** molecular weight of protein of the gastropod sample ranged from 2-110 kDa on *** analysis revealed the presence of bioactive compounds signals at different ***:The research shows that the great medicinal value of the gastropod muscle of *** may be due to high quality of antimicrobial compounds.

关键词： Gastropod Babylonia spirata Antimicrobial activity SDS-PAGE FTIR Antibacterial activity Antifungal activity Inhibition zone Muscle protein Bioactive compound

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Hydrogen Bonding Interaction between n-methylformamide and Alcohols

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物理化学学报 2006年第12期22卷 1560-1562页

作者： RAMACHAnDRAn Krishnamurthy DHARMALInGAM Kurunthu SIVAGURUnATHAn periyasamy Department ofPhysics Annamalai University Annamalai Nagar608002Tamil NaduIndiaDepartment ofPhysicsAnnamalai UniversityAnnamalai Nagar608002Tamil NaduIndiaDepartment ofPhysicsAnnamalai UniversityAnnamalai Nagar608002Tamil NaduIndia

The hydrogen bonding interactions between n-methylformamide and primary,secondary,and tertiary alcohols have been studied using the FTIR spectroscopic *** most likely association complex between alcohol and n-methylformamide is the 1∶1 stoichiometric complex formed between the hydroxyl group of alcohol and the carbonyl group of *** formation constant of the 1∶1 complexes has been calculated using the nash *** appears that the primary alcohols have larger formation constant compared with the secondary and tertiary *** results showed that the proton-donating ability of the alcohols decreased in the order:primary>secondary>tertiary,and that the association constant increased with the increase in carbon chain of the alkyl group of alcohols.

关键词：酒精氢结合物光谱学

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Acanthocephalan(Echinorhynchus sp.)infection of yellowfin tuna(Thunnus albacares)from nagapattinam,south east coast of India

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Journal of Coastal Life Medicine 2014年第8期 596-600页

作者： Alagarsamy Sakthivel periyasamy Selvakumar Ayyaru Gopalakrishnan Center of Advanced Study in Marine Biology Faculty of Marine Sciences Annamalai UniversityParangipettai 608502TamilnaduIndia

Objective:To recored the infection of Acanthocephalan parasite,(Echinorhynchus sp.)in adult yellowfin tuna(Thunnus albacares).This is the first report of acanthocephalan Echinirhynchus sp attached to yellowfin tuna and moreover prevalence,mean intensity and mean abundance was ***:Totally 1001 yellowfin tuna fishes were collected throughout the year of 2012 from the coast of nagapattinam(10°45'36.25"n and 79°50'59.54"E),Tamil nadu,*** collected fishes were washed with fresh water to remove debris and immediately stored in ice,and brought to the *** were placed in normal saline(0.85%naCl).The worms were fixed in alcohol/formalin/(AFA)fixative and in 70%ethanol until processed for ***:Totally 1001 yellowfin tuna was examined out of 387(52.67%)hosts were infected with acanthocephalan(Echinorhynchus sp.).The proboscis Echinorhynchus *** long,cylindrical with cylindrical with a uniform width measured(0.41±0.02)mm in length and(0.12±0.03)mm in *** endo parasite prevalence,intensity and abundance was recorded as 52.67%,12.46%,and 5.43%***:This current phenomena was carried out to report of acanthocephalan Echinorhynchus *** the new host of yellowfin tuna from nagapattinam ***,parasitological investigations are required to determine endo parasites of host due to its importance and numerous occurring among most important marine food fishes in world wild.

关键词： Thunnus albacares Internal infection Echinorhynchus sp. Prevalence Intensity Abundance

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Rice(Oryza sativa L.)plant protection using dual biological control and plant growth-promoting agents:Current scenarios and future prospects

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Pedosphere 2023年第2期33卷 268-286页

作者： Debasis MITRA Sergio DE LOS SAnTOS-VILLALOBOS Fannie Isela PARRA-COTA Ana María Garcia MOnTELOnGO Erika Lorena BLAnCO Vanessa L.LIRA Adeyemi n.OLATUnBOSUn Bahman KHOSHRU Rittick MOnDAL Parameswaran CHIDAMBARAnATHAn periyasamy PAnnEERSELVAM Pradeep K.DAS MOHAPATRA Department of Microbiology Raiganj UniversityRaiganjUttar DinajpurWest Bengal 733134(India) Instituto Tecnológico de Sonora 5 de febrero 818.Col.CentroCd.ObregónSonora 85000(Mexico) Campo Experimental norman E.Borlaug-Instituto nacional de Investigaciones Forestales Agrícolas y Pecuarias(INIFAP)Norman E.Borlaug Km.12C.P.Ciudad ObregónSonora 85000(Mexico) Laboratorio de Investigación en Biotecnología y Química de Polímeros Decanato de InvestigaciónUniversidad Nacional Experimental del TáchiraSan Cristóbal 5001(Venezuela) Departamento de Micologia Federal University of PernambucoRecifePE 50670-901(Brazil) Department of Plant Physiology and Crop Production Federal University of AgricultureAbeokuta 111101(Nigeria) Department of Soil Science Faculty of AgricultureUniversity of TabrizTabriz 51664(Iran) Department of Sericulture Raiganj UniversityRaiganjUttar DinajpurWest Bengal 733134(India) Biotechnology Crop Improvement DivisionIndian Council of Agricultural Research(ICAR)-National Rice Research InstituteCuttackOdisha 753006(India) Microbiology Crop Production DivisionICAR-National Rice Research InstituteCuttackOdisha 753006(India) Professor A.K.Bothra Environment Conservation Centre Raiganj UniversityRaiganjUttar DinajpurWest Bengal 733134(India)

Various microorganisms live in association with different parts of plants and can be harmful,neutral,or beneficial to plant *** microbial inhabitants of plants can control plant diseases by contesting with,predating on,or antagonizing plant pathogens and by inducing systems for plant defense.A range of methods,including plant growth-promoting microorganisms(PGPMs)as biological control agents(BCAs)(BCA-PGPMs)are used for the biological management and control of plant *** BCAs interact with plants by inducing resistance or priming plants without direct interaction with the *** BCAs operate via nutrient competition or other mechanisms to modulate the growth conditions for the ***,PGPMs can be applied alone or together with other chemicals or carriers to control various crop *** review highlights the effective types of BCA-PGPMs and their applications,roles,carrier based-formulations,and responses to rice(Oryza sativa L.)*** plant disease management prospects are promising,and growers’increasing demand for BCA-PGPM products can be exploited as an effective approach to the management of plant diseases,as well as to improve yield,environmental protection,biological resources,and agricultural system sustainability.

关键词： biological control agent plant disease plant growth-promoting microorganism plant health plant pathogen

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Seasonal variability of water quality by physicochemical indexes and traceable metals in suburban area in Kikwit,Democratic Republic of the Congo

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International Soil and Water Conservation Research 2017年第2期5卷 158-165页

作者： Alexis B.nienie periyasamy Sivalingam Amandine Laffte Patience ngelinkoto Jean-Paul Otamonga Alphonse Matand Crispin K.Mulaji Josue I.Mubedi Pius T.Mpiana John Pote Universite Pedagogique nationale(UPn) Croisement Route de Matadi et Avenue de la LiberationQuartier Binza/UPNB.P.8815 KinshasaRepublique Democratique du Congo University of Geneva Faculty of ScienceDepartment F-A.Forel for Environmental and Aquatic Sciencesand Institute of Environmental Sciences66Boulevard Carl-VogtCH-1205 GenevaSwitzerland University of Kinshasa(UnIKIn) Faculty of ScienceDepartment of ChemistryB.P.190 Kinshasa XIDemocratic Republic of the Congo

Water resource contamination is still a major concern in several regions of developing countries espe-cially in sub-Saharan countries in which polluted waters pose serious risks to human health and the *** seasonal variation of the physicochemical parameters including pH,temperature(T),electrical conductivity(EC),dissolved oxygen(O_(2)),dissolved organic carbon(DOC),total organic carbon(TOC),and trace metals were assessed in water samples collected from wells(n=3)and two rivers which were the River Lukemi(RLK,n=3)and River Luini(RLn,n=2)located in the City of Kikwit(Province of Kwilu,Democratic Republic of the Congo).Samples were collected during the dry and wet *** concentration of trace metals(Cr,Mn,Co,ni,Cu,Zn,As,Mo,Ag,Cd,Sn,Sb,and Pb)in water was measured using Inductively Coupled Plasma Mass Spectrometry(ICP-MS),and soluble ions(na^(+),K^(+),nH_(4)^(+),SO_(4)^(-),nO_(3),and Cl^(-))analysis was performed using lon *** results indicate the seasonal difference in the physicochemical composition of water e.g.,the pH was lower in the wet compared to the dry *** values during the wet season ranged from 4.12 to 5.60 in wells and from 5.55 to 6.31 in rivers while the dry season values ranged from 6.27 to 6.98 in wells and from 7.09 to 7.44 in *** concentrations of soluble ions and other physicochemical par ameters(O_(2),DOC and TOC)also varied with the seasons,being higher in the wet and lower in the dry *** the exception of Mn,the average concentrations of other trace metals measured in water samples from wells and rivers met the World Health Organization(WHO)guidelines for drinki ng/domestic water *** concentration in water samples analysed ranged between 634 to 812 and 1352-1741μgL^(-1) during the dry and wet seasons,*** results imply that the high concentration of Mn in the water samples may be explained by the geological origin and result of natural weathering *** general,accord

关键词： Water quality Wells Rivers Metal pollution Health risk

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聚马来酸对棉的无甲醛抗皱整理

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国际纺织导报 2013年第12期41卷 42-44,46页

作者： A. P. periyasamy K. Karthikeyan B. Dhurai R. Khanum 于萍(译) 罗艳(校) DKTE'S纺织工程学院(印度) SGS印度Pvt.公司(印度) Kumaraguru技术学院(印度) Daffodil国际大学(孟加拉国) 不详

棉织物的抗皱整理已不能满足当代人对"易护理"纺织材料的需求。传统可改善棉织物抗皱性的耐久定型整理大多基于n-羟甲基甲醛化合物,如二-羟甲基二羟基乙烯脲(DMDHEU)或其衍生物与棉纤维在高温下缩合反应而获得。然而,此定型整理过程中... 详细信息

棉织物的抗皱整理已不能满足当代人对"易护理"纺织材料的需求。传统可改善棉织物抗皱性的耐久定型整理大多基于n-羟甲基甲醛化合物,如二-羟甲基二羟基乙烯脲(DMDHEU)或其衍生物与棉纤维在高温下缩合反应而获得。然而,此定型整理过程中释放的甲醛已被认为是潜在的人类致癌物。过去20年来,人们致力于开发无甲醛交联剂,最具发展潜力的无甲醛试剂当属1,2,3,4 BTCA的多羧酸及马来酸的聚合物。由于1,2,3,4 BTCA的成本高于聚马来酸,因此商业应用较复杂。与纤维素底物进行酯交联的反应由次磷酸钠进行催化。讨论了聚马来酸的应用,研究了它对棉织物各种性能(如抗皱回复角、拉伸强度、撕裂强度及耐磨性等)的影响,并比较了经聚马来酸和DMDHEU处理的织物的性能。

关键词：棉织物无甲醛抗皱整理聚马来酸性能

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