A study of the larvicidal and molluscicidal activities of some medicinal plants from northeast Brazil

Luna, Josiane de Souza; Santos, Aldenir Feitosa dos; Lima, M.R.F. de; Omena, M.C. de; Mendonça, Fernando Antônio Cavalcante de; Bieber, Lothar W.; Santana, Antônio Euzébio Goulart

doi:10.1016/j.jep.2004.10.004

Cited by 99 publications

(27 citation statements)

References 35 publications

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“…The operator 1 H is relative to the kinetic energy of the electrons and the potential energy of interaction of the electrons with the nuclei:…”

Section: Hartree-fock Equationsmentioning

confidence: 99%

Application of Hartree-Fock Method for Modeling of Bioactive Molecules Using SAR and QSPR

Santos¹,

Lobato²,

Braga³

et al. 2014

CMB

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The central importance of quantum chemistry is to obtain solutions of the Schrödinger equation for the accurate determination of the properties of atomic and molecular systems that occurred from the calculation of wave functions accurate for many diatomic and polyatomic molecules, using Self Consistent Field method (SCF). The application of quantum chemical methods in the study and planning of bioactive compounds has become a common practice nowadays. From the point of view of planning it is important to note, when it comes to the use of molecular modeling, a collective term that refers to methods and theoretical modeling and computational techniques to mimic the behavior of molecules, not intend to reach a bioactive molecule simply through the use of computer programs. The choice of method for energy minimization depends on factors related to the size of the molecule, parameters of availability, stored data and computational resources. Molecular models generated by the computer are the result of mathematical equations that estimate the positions and properties of the electrons and nuclei, the calculations exploit experimentally, the characteristics of a structure, providing a new perspective on the molecule. In this work we show that studies of

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“…The operator 1 H is relative to the kinetic energy of the electrons and the potential energy of interaction of the electrons with the nuclei:…”

Section: Hartree-fock Equationsmentioning

confidence: 99%

Application of Hartree-Fock Method for Modeling of Bioactive Molecules Using SAR and QSPR

Santos¹,

Lobato²,

Braga³

et al. 2014

CMB

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“…Indiscriminate use of synthetic molluscicides such as Carbamates and organophosphates has created several environmental hazards. 10 So that, plant molluscicides are advocated as they are easily biodegradable, cheap and easier to handle by native users. 11,12 Chlorophyll is found in all green plants.…”

Section: Introductionmentioning

confidence: 99%

Chlorophyllin Treatment Against the Snail Lymnaea acuminata: A new tool in Fasciolosis Control

Singh¹,

Singh²,

Singh³

2017

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Objective:To observe the toxicity of chlorophyllin against Lymnaea acuminata to control fasciolosis caused by liver fluke fasciola gigantica, very prominent in eastern region of Uttar Pradesh. Materials and Methods: Ten snails Lymnaea acuminata were placed in a glass aquarium containing 3 L of dechlorinated tap water. These snails were treated with different concentrations of chlorophyllin. Chlorophyll was extracted from spinach with the help of macerated leaves and kept for 2 h in 100% ethanol at 55ºC. Results: The results of the experiment showed that the photodynamically active chlorophyllin, at low concentration was able to kill the snails under exposure of solar radiation in summer season instead of winter season. In winter, extracted chlorophyllin toxicity against L. acuminata in sunlight (96 h ). Pure chlorophyllin is more than five times toxic than synthetic molluscicides. Treatment of chlorophyllin caused no toxic effect against the fish (Colisa fasciatus). The result presented in this paper is found very beneficial and ecologically safe, as a photodynamic substance chlorophyllin, which found in every green plant. Conclusion: Phytotherapy of snails by photodynamic water soluble chlorophyllin to control fasciolosis can be used as potent molluscicides with low cost and easily biodegradable.

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“…Nevertheless, less than 10% of the vegetal species of the Atlantic Forest have been evaluated for their biological characteristics, and less than 5% have been subjected to detailed phytochemical and genetic analyses (Luna et al, 2005). Habitat loss and isolation of forest fragments can be observed by the decreased genetic variability, which decreases the population's effective size, and through a possible increase in endogamy, which may contribute to the decreasing reproductive success of the plant population (Hartl and Clark, 2010).…”

Section: Introductionmentioning

confidence: 99%

Genetic diversity of Casearia sylvestris populations in remnants of the Atlantic Forest

et al. 2017

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ABSTRACT. Guaçatonga (Casearia sylvestris) is a native plant of the Atlantic Forest, with high medicinal potential and relevance for reforestation programs. The aim of this study was to characterize, with microsatellite markers, two populations of C. sylvestris from remaining areas of the Atlantic Forest in the State of São Paulo. High allelic variation was found in both populations (N A = 101 and 117; A R = 12.5 and 14.4), although with high endogamy coefficients (f = 0.640 and 0.363). Estimates of genetic structure suggested the presence of considerable genetic divergence between the populations (F ST = 0.103); however, there was no spatial genetic structure within the populations. Genetic divergence may have occurred due to decreased gene flow between the fragmented populations as the result of deforestation. The results of this study demonstrate the importance of genetic diversity and its characterization in native plants within remaining forest areas for the management and restoration of such areas.

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A study of the larvicidal and molluscicidal activities of some medicinal plants from northeast Brazil

Cited by 99 publications

References 35 publications

Application of Hartree-Fock Method for Modeling of Bioactive Molecules Using SAR and QSPR

Application of Hartree-Fock Method for Modeling of Bioactive Molecules Using SAR and QSPR

Chlorophyllin Treatment Against the Snail Lymnaea acuminata: A new tool in Fasciolosis Control

Genetic diversity of Casearia sylvestris populations in remnants of the Atlantic Forest

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