Effect of different carbon sources on the growth and enzyme production of a toxigenic and a non-toxigenic strain of <i>Aspergillus flavus</i>

Alvarez-Zúñiga, María Teresa; García, Diana Castañeda; Osorio, Guillermo Aguilar

doi:10.1080/10826068.2020.1858426

Cited by 3 publications

(2 citation statements)

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“…It is seen that the suitable temperatures for the enzyme activity are different in the studies, and in this study, the enzyme activity changed depending on the temperature. Determination of the impact of various carbon sources on the growth of microorganisms can provide information about their biotope, particularly the nutrients necessary for their improvement (Alvarez-Zúñiga et al, 2020). In the study, the impact of carbon sources on enzyme activity was determined by growing L. rhamnosus BAZ78 strain in different carbon sources (glucose, fructose, sucrose, lactose, cellobiose).…”

Section: Discussionmentioning

confidence: 99%

Beta-Glycosidase Activities of Lactobacillus spp. and Bifidobacterium spp. and The Effect of Different Physiological Conditions on Enzyme Activity

ACAR¹,

Yuksekdag²

2023

Natural and Engineering Sciences

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In this research, food (cheese, yoghurt) and animal (chicken) origin 39 Lactobacillus spp. and human origin (newborn faeces) three Bifidobacterium spp. were used. To designate the β-glycosidase enzyme and specific activities of the cultures, p-nitrophenyl-β-D glikopiranozit (p-NPG) was used as a substrate. The best specific activities between Lactobacilli cultures were observed at Lactobacillus rhamnosus BAZ78 (4.500 U/mg), L. rhamnosus SMP6-5 (2.670 U/mg), L. casei LB65 (3.000 U/mg) and L. casei LE4 (2.000 U/mg) strains. Bifidobacterium breve A28 (2.670 U/mg) and B. longum BASO15 (2.330 U/mg) strains belonging to the Bifidobacterium cultures had the highest specific activity capabilities. Optimization studies were performed to designate the impact of different pH, temperature, and carbon sources on the β-glucosidase enzyme of L. rhamnosus BAZ78 strain (β-Glu-BAZ78), which exhibits high specific activity. As optimum conditions, pH was detected as 7.5, the temperature as 30° C, and the carbon source as 2% glucose for the enzyme. Although the enzyme activity changed as the physiological conditions changed, the β-Glu-BAZ78 showed the highest specificity in the control groups.

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Section: Discussionmentioning

confidence: 99%

Beta-Glycosidase Activities of Lactobacillus spp. and Bifidobacterium spp. and The Effect of Different Physiological Conditions on Enzyme Activity

ACAR¹,

Yuksekdag²

2023

Natural and Engineering Sciences

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“…The PDA medium was prepared without the addition of a nitrogen source, and a pH 7 medium containing different carbon sources was prepared by adding glucose, sucrose, D-fructose, a-lactose, soluble starch, D-mannitol, and xylitol at 2% (the same ratio as glucose) [13,14]. The strains were inoculated into the center of 90-mm Petri dishes containing different carbon sources of medium and incubated at 20°C under natural light conditions.…”

Section: Determination Of Activitymentioning

confidence: 99%

Screening and functional study of the dominant strains producing total flavonoids from the endophytic fungi of Epimedium korea

Zhuang

Chen

et al. 2022

Preprint

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As a traditional Chinese Dao-di herb, the size of Epimedium korea's stock in wild populations are shrinking yearly due to environmental, climatic, and anthropogenic impacts. In this study, a new fungal strain, Ilyonectria cyclaminicola (I.c.), capable of a high production of total flavonoids was screened from six endophytic fungi isolated from the leaves of E. korea. In the zebrafish model, the metabolites of I.c. strains had similar efficacy to medicinal material. Culturing the I.c. strain with α-actose as the carbon source, glycine as the nitrogen source, at pH = 6 and a culture temperature of 25°C, under 12-h natural light, as the solid fermentation conditions, yielded the highest content of total flavonoids. This study fills the gap in the research on the endophytes of E. korea and lays the foundation for developing the I.c. strain into a new medicinal resource and a substitute for the threatened medicinal material of E. korea.

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Valorization and optimization of agro-industrial orange waste for the production of enzyme by halophilic Streptomyces sp.

Ousaadi¹,

Merouane²,

Berkani³

et al. 2021

Environmental Research

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Effect of different carbon sources on the growth and enzyme production of a toxigenic and a non-toxigenic strain of Aspergillus flavus

Cited by 3 publications

References 50 publications

Beta-Glycosidase Activities of Lactobacillus spp. and Bifidobacterium spp. and The Effect of Different Physiological Conditions on Enzyme Activity

Beta-Glycosidase Activities of Lactobacillus spp. and Bifidobacterium spp. and The Effect of Different Physiological Conditions on Enzyme Activity

Screening and functional study of the dominant strains producing total flavonoids from the endophytic fungi of Epimedium korea

Valorization and optimization of agro-industrial orange waste for the production of enzyme by halophilic Streptomyces sp.

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