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11.
Karima Bouti Carol Verheecke-Vaessen Salim Mokrane Atika Meklat Nadjette Djemouai Nasserdine Sabaou Florence Mathieu Amar Riba 《Journal of Food Safety》2020,40(1):e12743
In Algeria, little information is available on the population structure of Aspergillus section Flavi in raw materials and resultant animal feeds. A total of 172 isolates belonging to Aspergillus section Flavi were recovered from 57 animal feeds and identified on the basis of macro and micro-morphological characters, mycotoxin production and genetic relatedness. For the molecular analysis, sequencing of the calmodulin gene (CaM) and the internal transcribed spacer (ITS) regions were performed for representative isolates. Four distinct morphotypes were distinguished: Aspergillus flavus (78.5%), Aspergillus tamarii (19.2%), Aspergillus parasiticus (1.7%), and Aspergillus alliaceus (0.6%). All A. flavus isolates were of the L type and no correlation between sclerotia production and aflatoxigenicity was observed. Our results showed that 68% of the A. flavus strains produced aflatoxins B (AFB), and 72.7% were cyclopiazonic acid (CPA) producers. The three isolates of A. parasiticus were able to produce AFB and aflatoxins G but not CPA whereas, all the strains of A. tamarii produced only CPA. The obtained results revealed the presence of different species of Aspergillus section Flavi, among which were aflatoxin producers. This study provides evidence useful for considerations in aflatoxin control strategies. 相似文献
12.
Mohd. Khalid Atika Khatoon Faiz Mohammad 《化学与化工:英文版》2009,(10):57-64
Electrically conductive composite films ofpolyaniline and nylon-6.6 are prepared by diffusing aniline followed by oxidative polymerization of aniline into nylon-6.6 matrix. In order to determine the diffusion coefficient for the chloride ion diffusion into the composite matrix electrochemically, galvanostatic pulse method is used and the diffusion coefficient is estimated to be -6.48× 10^-17 cm^2s^-1. The results are discussed in view of them being potential replacement materials for battery. electrodes and sensors devices. 相似文献
13.
Akram Hijazi Ksenia Parkhomenko Jean‐Pierre Djukic Atika Chemmi Michel Pfeffer 《Advanced Synthesis \u0026amp; Catalysis》2008,350(10):1493-1496
Exposure of various arylethynes to catalytic amounts of dimeric ruthenacycles containing the chloro(dicarbonyl)ruthenium [Ru(CO)2Cl] motif efficiently and selectively leads to the formation of (E)‐1,4‐diaryl‐but‐1‐en‐3‐ynes that result from head‐to‐head C C coupling. 相似文献
14.
Guendouz Atika Amrani Bouhalouane Hakiki Nour Eddine Khodja Kouider Driss 《Journal of Superconductivity and Novel Magnetism》2022,35(1):155-165
Journal of Superconductivity and Novel Magnetism - Double perovskite oxides have attracted much attention in material science and spintronic applications due to their exceptional physical... 相似文献