Enhanced production of α-amylase by Penicillium chrysogenum in liquid culture by modifying the process parameters

Amylase Production from Thermophilic Bacillus sp. BCC 021-50 Isolated from a Marine Environment

“…Amylase production from Bacillus cereus under solid-state fermentation was reported in alkaline pH [31]. In contrast to our results, Dar et al [29] obtained maximum amylase concentration in acidic pH (6.00) from Penicillium chrysogenum. Thermo-alkaliphilic microbial strains are considered as industrially-important strains due to their Figure 5 demonstrates the influence of initial pH (5.0 to 11.0) on amylase synthesis with molasses and peptone as the sole carbon and nitrogen source in mineral medium, incubated at 50 • C for 36 h. Amylase concentration significantly changed with the initial pH values, and the maximum yield was found at pH 8.0 and activity decreased with increasing pH values.…”

“…Amylase production from Bacillus cereus under solid-state fermentation was reported in alkaline pH [31]. In contrast to our results, Dar et al [29] obtained maximum amylase concentration in acidic pH (6.00) from Penicillium chrysogenum. Thermo-alkaliphilic microbial strains are considered as industrially-important strains due to their commercial value, especially alkaline pH-stable amylase, which could be used in detergent formulations.…”

“…Based on the results obtained, it could be hypothesized that bacterial cells secrete the highest amylase concentration when grown on organic nitrogen sources as compared to inorganic nitrogen sources. Our results are in line with the results presented by Dar et al [29] for amylase production from Penicillium chrysogenum using peptone as an organic nitrogen source. Bozic et al [22] obtained the highest amylase concentration from Bacillus licheniformis when tryptone was used as the sole nitrogen source.…”

A multicomponent system based on a blend of agroindustrial wastes for the simultaneous production of industrially applicable enzymes by solid-state fermentation

“…Aspergillus niger strains have a recognized historical use in industrial processes as producers of extracellular lipases, proteases, and cellulases (Mahadik et al, 2002;Devi & Kumar, 2017;Xue et al, 2015). In addition, microbial enzymes as lipase, cellulose, amylase and endo-β-1,4-glucanase (CMCase) have been replaced plant and animal enzymes and also been applied in many industries including foods, beverages, pharmaceuticals, detergents, textiles, leather, chemicals, biofuels, animal feed, personal care, pulp and paper, diagnostics, and therapy (Treichel et al, 2010;Behera & Ray, 2016;Dar et al, 2015). Different agroindustrial wastes, such as soybean meal, wheat bran, corncob, rice husk, and gingelly oil cake, have been used for enzyme production under SSF by A. niger (Mahadik et al, 2002;Damaso et al, 2008;Colla et al, 2010).…”

Chemical and Physicochemical Characterization of Faveleria (Cnidoscolus phyllacanthus) Oil - It Use of Determination of Enzymatic Activity of Extract of Fungi rhizopus sp.

“…A atividade do microrganismo sobre a peptona durante o processo de fermentação foi monitorada por pH a cada 24 h; houve consumo e liberação de diversas substâncias, incluindo lipases, que proporcionam alterações químicas no sistema. 42,43 Diversos estudos para obtenção de lipases em substratos líquidos demonstraram aumento de pH durante o processo de fermentação. [44][45] Figura 5 (a) mostra que a fermentação em meio peptonado com o fungo Rhizopus sp.…”