Aptitude de trois souches de moisissures à produire des enzymes extracellulaires en milieu solide au Burkina Faso

Abstract

The ability of three strains of fungi to produce extracellular enzymes on solid state in Burkina Faso Abstract Objective: The aim of this study is the physiological characterization of three fungi strains S1, S2 and S3 respectively isolated from maize, groundnuts and rice through their ability to produce extracellular enzymes. Methods and Results: A total of seventy-six (76) samples of local foods were collected in centrals markets of three cities in Burkina Faso. Two hundred and seventy-two (272) fungi strains were isolated and submitted to extracellular enzymes indirect screening production. It was consisted by measuring the apical growth rate of the fungi strains on solid media supplemented with various carbon substrates. The screening revealed the proteolytic, amylolitic, tannasic, lipolytic and cellulosic activities of three fungi strains. According to the Raper & Fennell (1965) and Pitt (1985) identification key, these three strains S1, S2 and S3 are respectively Aspergillus fumigatus, Aspergillus flavus and Penicillium citrinum. Conclusion and Application: Micro-organisms in general and filamentous fungi in particular are rich sources of enzymes more easily exploitable than those of plants or animals due to the simplicity in purification. Fungal enzymes remain biotechnology key tools and reflect increasingly important and the infinity role of mold in various food applications. Among these enzymes, lipases, phytases and tannases are perceived as important enzymes in industry. However, the main obstacle hindering the potential applications of these enzymes is their cost. Local fungi strains with interesting enzymes property could help cost decreasing.

The Oils Refining Process and Contaminants in Edible Oils: A Review

“…Toxin T-2) cannot be classified in terms of its carcinogenicity to humans and group 4 probably not carcinogenic to humans (Brochard and Bâcle, 2009). As a reminder, certain moulds are beneficial and used in the agro-food and biotechnology industries, involved in the production of organic acids, enzymes and pigments (Compaoré et al, 2017). This is the case of Aspergillus Niger used for the synthesis of food acids (citric acid and gluconic acid), the production of enzymes (alpha-amylase, lipase, pectinase).…”

Isolement d’actinomycètes productrices de substances antimicrobiennes à partir de sols prélevés dans la ville de Ouagadougou, Burkina Faso

“…Depuis 50 ans, aucune nouvelle classe d'antibiotiques dirigée contre les bactéries à Gram négatif n'a reçu d'autorisation de mise sur le marché. Carlet et al (2015) ont rapporté que les pertes économiques liées à la résistance bactérienne s'élèveraient à plus de 1,5 milliards d'euros en Europe, et plus de 55 milliards de dollars aux Etats-Unis. Au niveau mondial, le coût cumulé de l'antibiorésistance dépassera 100 000 milliards de dollars d'ici 2050 si rien n'est fait pour lutter contre ce phénomène Comme alternative pour pallier ce problème d'antibiorésistance une meilleure utilisation et/ou la réduction de la consommation des antibiotiques ont été préconisés.…”