Danièle Hérin

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ABSTRACT : The leaves, stem, flowers and fruits of Datura metel Linn. which have some medicinal applications were investigated. Phytochemical analysis gave positive results for steroids, triterpinoids, reducing sugars, sugars, alkaloids, phenolic compounds, flavonoids and tannins. The crude methanol extracts showed growth inhibitory effects on Xanthomonas(More)
Centella asiatica is a medicinal plant. It is severely affected by leaf spot disease caused by a harmful, antibiotic resistant phyto pathogen Xanthomonas campestris pv. centellae (X. c. pv. c). Farmers used synthetic pesticides to control the disease. When pesticides are applied to control this pathogen, pesticides may cause environmental hazards and health(More)
Pteridophytes are not infected by microbial pathogens, which may be one of the important factors for the evolutionary success of pteridophytes and the fact that they survived for more than 350 million years[1]. Considering the rich diversity of Indian medicinal plants including pteridophytes, it is expected that, the screening of plant extract for(More)
The leaves, stem, flowers and fruits of Azadiracta indica .A Juss. which have some medicinal applications were investigated. Phytochemical analysis gave positive results for steroids, triterpinoids, reducing sugars, sugars, alkaloids, phenolic compounds, flavonoids and tannins. The crude methanol extracts showed growth inhibitory effects on Xanthomonas(More)
The aim of this article is to help a teacher to evaluate his courses by following the students during the learning phase. We asume that the teacher doesn’t use an educational platform and have resources at his disposal. We model the course by using a global ontology (an overall view of the system) with limited educational resources. In order to follow the(More)
The methanol and aqueous extracts of leaves of six different medicinal plants, Acalypha indica, Aerva lanata, Phyllanthus amarus, Phyllanthus emblica, Cassia auriculata and Caesalpinia pulcherrima , were used for the investigation of antibacterial studies. In antibacterial screening performed by disc diffusion method against two types of bacteria namely(More)