ALGERIAN JOURNAL OF NATURAL PRODUCTS

Number .Vol.2 N°3, 2014

07
Zn(II), Pb(II) and Cd(II) levels in livers and muscles of wild duck (Anas platyrhynchos) hunting in El Melah Lagoon (NE Tunisia)

Authors: Cherif Ensibi, Francisco Soler Rodríguez, Prado Míguez Santiyán, Mohamed Nejib Daly Yahya, Marcos Pérez-López, David Hernández Moreno

Abstract

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We investigated the levels of Zn(II], Pb(II] and Cd(II] in livers and muscles of the wild duck (Anas platyrhynchos) hunting in El Melah lagoon in northeastern Tunisia from December 2010. Analysis of variance shows that no significant differences in metals levels were found between samples, but it should be pointed out that the number of samples was small. HSD Tukey test show that the amount of Cd(II], Zn(II] and Pb(II] in the levers was higher than in the muscles. The results obtained suggest the importance of wild ducks as bioindicators of heavy metal pollution.

10
Characterization and cation exchange capacity of seeds of Ziziphus spina-christi

Authors: Shadia M. Sirry , Fethi Kooli, Shareefah A. Al –Shareef

Abstract

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There are several naturally existing materials have ability to utilize as ion-exchangers. Most of these materials are by-products of waste material from industry or agriculture. Agriculture ion exchange materials include: lemon orange, grapefruit, apple, peas, broad bean, and meddler peels, kernel core, and grape skins. This research deals with the utilization of agriculture waste biomass of napak seed as natural cation exchanger for removal of cationic pollutant from aqueous solution. Methylene blue dye method was used to determine the cation exchange capacity of the stone and it was characterized by IR and TGA methods. The results showed that the highest dye sorption capacity was found at pH 7, the equilibrium time was 60 min, sorbent dose = 0.1g, particle size 177μm and methylene blue concentration range 10-50 ppm. The equilibrium sorption data were analyzed by Langmuir and Freundlich isotherm models.

10
Corrosion inhibition of carbon steel A 283 C using the acetylsalicylic acid

Authors: Emna Zouaoui, Ferial Krid, Sihem Kharraf and M. S. Medjram

Abstract

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The corrosion inhibition characteristics of acetylsalicylic acid on carbon steel has been studied using electrochemical measurements. Results showed that: The inhibition efficiency values give maximum inhibition at the concentration of 300 ppm and decrease back. They decreased with increasing temperature. Polarization studies showed that this compound is an anodic inhibitor for carbon steel in decanted water from a tank bottom hydrocarbon storage (East Region Transport: Skikda Algeria ). The inhibition occurs through adsorption of the inhibitor molecule on the metal surface. The adsorption of the inhibitor on the metal surface is found to obey Langmuir’s adsorption isotherm. The values of thermodynamic parameters, such as Kads, G°ads, H°ads and S°ads are calculated.

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Validation of Traditional Therapeutic Claims through Phytochemical Screening and Antibacterial Assessment: A Study on Mahakaal (Trichosanthes tricuspidata L.) From Similipal Biosphere Reserve Forest, Odisha, India

Authors: Prakash Kumar Tripathy, Sanjeet Kumar, Miriam Ahunna Ofoeze, Sushanto Gouda, Nihar Ranjan Singh, Padan Kumar Jena

Abstract

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Similipal Biosphere Reserve forest is situated in the district Mayurbhanj, Odisha, enriched with the different types of vegetations along with aboriginals. These aboriginals have unique skills in using traditional therapeutic medicines. They use wild plant and their parts in traditional herbal formulations to cure different diseases. Trichosanthes tricuspidata, locally known as Mahakaal is very common to be used as herbal medicine. Fruits of Mahakaal have sound traditional therapeutic values, they have been used against asthma, skin infections, muscular pain and killing the head lice. Phytochemical screening of fruit extracts revealed the presence of major bioactive compounds such as Tannin, Saponin, Flavonoids, Phenolic compounds, Terpenoids etc which indicate its sound pharmacological properties. Antibacterial assessment of fruit extracts also showed excellent activity against two Gram-positive and three Gram-negative bacteria. Methanol extracts showed highest zone of inhibition (1.51 cm) against Streptococcus pyogenes caused skin infections. The experimental works validate the traditional therapeutic claims.