March 2016

Unexplored vegetal green synthesis of silver nanoparticles: A preliminary study with Corchorus olitorus Linn and Ipomea batatas (L.) Lam

Antibacterial properties of silver ion are known from ancient times. The plant extract mediated synthesis of nanoparticles is gaining popularity due to green chemistry for the generation of nanosized materials. Corchorus olitorus Linn and Ipomea batatas (L.) Lam are world crops having leaves of high nutritional value. In the present work, Ag and AgCl nanoparticles were synthesized by incubating leaf aqueous extracts...

Author(s): François Eya’ane Meva, Marcelle Loretta Segnou, Cecile Okalla Ebongue, Agnes Antoinette Ntoumba, Djiopang Yadou Steve, Fanny Aimee Essombe Malolo, Lidwine Ngah, Harouna Massai and Emmanuel Mpondo Mpondo,

March 2016

Effects of season on the yield and quality of agar from Gelidium sesquipedale (Rhodophyta) from Mostaganem, Algeria

The aim of this work was to study the seasonal variations in the yield and physicochemical properties of agar of Gelidium sesquipedale. The algae were collected from January 2011 to December 2011, from the coast of Mostaganem, western Algeria. The overall results show that the dry biomass of Gelidium sesquipedale was constant throughout the year (22.34 ± 3.18 %), while the agar yield varied seasonally with...

Author(s): S. Nil, S. Ali-Mehidi, A. Zellal and S. M. E. A Abi-Ayad

March 2016

Chemical compositions and antimicrobial activity of twig essential oils from three Xylopia (Annonaceae) species

The chemical composition of twig essential oils of Xylopia malayana, Xylopia elliptica and Xylopia fusca were analyzed using GC and GCMS. Both X. malayana (12.9%) and X. fusca (11.8%) twig oils contained spathulenol as the major constituent while X. elliptica twig oil was found to be rich in terpinen-4-ol (11.9%). The antimicrobial activities of the essential oils were evaluated against six gram positive bacteria, two...

Author(s): Siti Humeirah Abdul Ghani, Nor Azah Mohamad Ali, Mailina Jamil, Mastura Mohtar, Saiful Azmi Johari, Mazurah Mohamad Isa and Mohd Faridz Zoll Patah

March 2016

Effect of acaricidal activity of Solanum nigrum on Tetranychus urticae Koch under laboratory conditions

Tetranychus urticae is an economically important pest for different commercial crops and is traditionally controlled with synthetic chemical products that are usually toxic. Therefore, alternative strategies are implemented to allow producers to meet the phytosanitary requirements demanded by quality seals. One of these alternatives is the use of plant extracts. The aim of this study was to determine the effect of...

Author(s): Stephanie Johana Numa Vergel, Lorena Rodríguez Coy, Daniel Rodríguez Caicedo and Ericsson Coy-Barrera

March 2016

Histomorphometry aspect of thyroid gland and biochemical profile in pregnant and non-pregnant dromedary camels

Modulation of body physiology and metabolism is a prerequisite for successful pregnancy in camels, which is about a year and few months. The present study was carried out to verify the effect of pregnancy on histomorphometry and functional traits of thyroid gland, as well as some biochemical indices of liver and kidney functions and mineral profile in one humped camels, under Egyptian climatic conditions or desert...

Author(s): Yousef F. Ahmed, Karima Gh. M. Mahmoud, Mohamed M. M. Kandiel, Nawito M. F. and AbdelRazik, A. M. A.