Isolement et caractérisation morphologique de moisissures productrices de substances antibactériennes à partir d’aliments locaux au Burkina Faso

Abstract

Isolation and morphological characterization of fungi producing antibacterial substances from local food in Burkina FasoABSTRACT Bacterial resistance to the actual antibiotic is mostly in dangerous progress, why we have interest in isolation and characterization of fungi strains producing antibiotics using local food in Burkina Faso. Fifty (50) isolated strains were used in the antibiosis trial which revealed twenty (20) strains producing antimicrobial substances. This trial concerned the strains cell as well as its aqueous and organic extracts. Three (03) strains had average inhibition diameters of 20 mm on the testing germs. Their characterization focused on the H. COMPAORE et al. / Int. J. Biol. Chem. Sci. 10(1): 198-210, 2016 199 morphological and culture criteria. After five days of incubation in Potato Dextrose Agar (PDA), the strain S 1 shows a flat colony, white on the front, with a yellow reverse. The strain S 2 shows an olive-green colony, velvety texture, more dense in the center. As for the strain S 3 , it shows a round green colored colony. In optical microscopy, strains S 1 and S 2 showed numerous round and refractive conidia, conidiophores are hyaline, long and not partitioned. S 3 strain showed uncommon conidia, penicillus made of phialides which are directly linked to the end of partitioned conidiophores. Analysis of these characteristics indicates that S 1 , S 2 and S 3 belong respectively to the Aspergillus and Penicillium genera.

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“…Dried and smoked fish are store around the lake where humidity is relatively higher. The following picture is an evidence of inappropriate storage conditions which is an important factor in fungal growth (Tidjani et al, 2008;Mahibeb, 2015;Compaore et al, 2016). The frequency of fungal kinds here found is also similar to some previous studies Rebbouh (2016) and Laaid et al (2009); Fatima et al (2016) and Tidjani et al (2007;2008).…”

Screening of Mycotoxins Producer Fungal and Aflatoxins Level in Dried and Smoked Fish (Clarias Sp.) and (Oreochromis Sp.) from Lake Fitri - Chad

“…Dried and smoked fish are store around the lake where humidity is relatively higher. The following picture is an evidence of inappropriate storage conditions which is an important factor in fungal growth spp as the major pathogenic fungal in dried food (Tidjani et al, 2008;Mahibeb, 2015;Compaore et al, 2016). The frequency of fungal kinds here found is also similar to some previous studies Rebbouh (2016) and Laaid et al (2009); Fatima et al (2016) and Tidjani et al (2007;2008).…”

Isolation and characterization of endophytic fungi associated with Ephedra alata (macroscopic and microscopic characterization)

“…These molecules can directly stimulate plant growth, by increasing the availability of soluble iron around the roots or indirectly by inhibiting the growth of pathogens with regard to the phenomenon of competition for iron (Le Govic et al, 2017). Aspergillus niger, as one of the most important species of filamentous fungi, is used in biotechnology and is also one of the most common natural contamination fungi in animal feed and foodstuffs (Cairns et al, 2018).…”

“…Endophytes are the group that colonizes the internal living tissues of plants without causing immediate negative effects (Tripathi et al, 2022). Fungi are the most frequently isolated microorganisms as endophytes (Caruso et al, 2022). They are present in all plant species studied and they can be found in the internal tissues of roots, stems, leaves, flowers, fruits or seeds (Tanapichatsakul et al, 2018).…”