Exploiting the exceptional biosynthetic potency of the endophytic Aspergillus terreus in enhancing production of Co3O4, CuO, Fe3O4, NiO, and ZnO nanoparticles using bioprocess optimization and gamma irradiation

El‐Sayed, El‐Sayed R.; Mousa, Shaimaa A.; Abdou, Dalia; El-Seoud, Mohamed A. Abo; Elmehlawy, Adel A.; Mohamed, Samar

doi:10.1016/j.sjbs.2021.12.019

Cited by 25 publications

(21 citation statements)

References 42 publications

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“…Results of studying the influence of exposure of spores of the fungus to gamma rays at several doses on the obtained yield of ZnONPs demonstrated that spore suspension irradiated at 500 Gy intensified the yield of ZnONPs with a maximum yield expressed by the 0.952 OD mL − 1 culture filtrate and the 81.47 mg ZnONPs 100 mL − 1 culture filtrate; representing approximately a fourfold increase. In partial accordance with these results, a previous study used the same methodology of gamma irradiation but at a different dose (1000 Gy) increase the yield of ZnONPs by the fungus Aspergillus terreus (El-Sayed et al 2022b ). In previous studies, irradiating spores of the fungus Monascus purpureus by gamma rays at 1000 Gy significantly intensified the yields of both cobalt-ferrite NPs (El-Sayed et al 2020b ) and selenium NPs (El-Sayed et al 2020a ).…”

Section: Discussionsupporting

confidence: 76%

Improving carboxymethyl cellulose edible coating using ZnO nanoparticles from irradiated Alternaria tenuissima

et al. 2022

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In this paper, gamma-irradiation was successfully used to intensify the yield of Zinc oxide nanoparticles (ZnONPs) produced by the fungus Alternariatenuissima as a sustainable and green process. The obtained data showed that 500 Gy of gamma-irradiation increased ZnONPs’ yield to approximately four-fold. The synthesized ZnONPs were then exploited to develop active Carboxymethyl Cellulose films by casting method at two different concentration of ZnONPs 0.5% and 1.0%. The physicochemical, mechanical, antioxidant, and antimicrobial properties of the prepared films were evaluated. The incorporation of ZnONPs in the Carboxymethyl Cellulose films had significantly decreased solubility (from 78.31% to 66.04% and 59.72%), water vapor permeability (from 0.475 g m−2 to 0.093 g m−2 and 0.026 g m−2), and oxygen transfer rate (from 24.7 × 10–2 to 2.3 × 10–2 and 1.8 × 10–2) of the respective prepared films. Meanwhile, tensile strength (from 183.2 MPa to 203.34 MPa and 235.94 MPa), elongation (from 13.0% to 62.5% and 83.7%), and Yang's modulus (from 325.344 to 1410.0 and 1814.96 MPa) of these films were increased. Moreover, the antioxidant and antimicrobial activities against several human and plant pathogens the prepared of Carboxymethyl Cellulose-ZnONPs films were significantly increased. In conclusion, the prepared Carboxymethyl Cellulose-ZnONPs films showed enhanced activities in comparison with Carboxymethyl Cellulose film without NPs. With these advantages, the fabricated Carboxymethyl Cellulose-ZnONPs films in this study could be effectively utilized as protective edible coating films of food products.

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Section: Discussionsupporting

confidence: 76%

Improving carboxymethyl cellulose edible coating using ZnO nanoparticles from irradiated Alternaria tenuissima

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“…This novel research area will open a new horizon, on the interface of nanotechnology and microbiology, for novel synthesis of diverse nanomaterials with several applications (Abdelhakim et al 2020 ; El-Sayed et al 2022a ). Today, these endophytes started to find their application in different nanotechnology fields because their metabolic activity is much higher than their free counterparts (Mousa et al 2021 ; El-Sayed et al 2022b ). For all of these reasons, we aim in this paper to explore the effectiveness of fungal endophytes of some plant species as facile, environmentally friendly and cost-effective bio-factories of SeNPs.…”

Section: Introductionmentioning

confidence: 99%

Harnessing endophytic fungi for biosynthesis of selenium nanoparticles and exploring their bioactivities

et al. 2022

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In the light of the fast growing several applications of selenium nanoparticles (SeNPs) in different industrial and agricultural sectors, this paper was conducted to explore the suitability of endophytic fungi as nano-factories for SeNPs. Thus, 75 fungal isolates were recovered from plant tissues and tested for their efficacy to biosynthesize SeNPs. Four promising strains were found able to synthesis SeNPs with different characteristics and identified. These strains were Aspergillus quadrilineatus isolated from the twigs of Ricinus communis, Aspergillus ochraceus isolated from the leaves of Ricinus communis, Aspergillus terreus isolated from the twigs of Azadirachta indica, and Fusarium equiseti isolated from the twigs of Hibiscus rose-sinensis. The synthesized SeNPs were characterized by several techniques viz., UV–Vis, X-ray diffraction, Dynamic light scattering analyses, High resolution transmission electron microscopy, and Fourier transform infrared spectroscopy, to study their crystalline structure, particle sized distribution, and morphology. Furthermore, the in vitro antimicrobial and antioxidant activities were evaluated. SeNPs synthesized by the four strains showed potent antifungal and antibacterial potentials against different human and phyto- pathogens. Moreover, SeNPs synthesized by the respective strains showed promising antioxidant power with IC50 values of 198.32, 151.23, 100.31, and 91.52 µg mL− 1. To the best of our knowledge, this is the first study on the use of endophytic fungi for SeNPs’ biosynthesis. The presented research recommends the use of endophytic fungi as facile one-pot production bio-factories of SeNPs with promising characteristics.

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“…Previous reports concluded the effect of gamma rays as an energetic ionizing radiation in induction of mutations in the exposed cells (Thacker 1999 ) through the repair mechanism in genes of the DNA of the irradiated cells (Ismaiel et al 2014 , 2015 ; Zaki et al 2020 ; Zaki and El-Sayed 2021 ). Generally, exposure to physical mutagens such as gamma rays is a successful strategy to improve microbial strains by developing overproducers (Parekh et al 2000 ) with intensified production rates (El-Sayed et al 2020a , c ; Zaki et al 2020 ) with industrial applications thereby effectively lowering the overall cost of the process, as supported by several reports (Anwar et al 2022 ; El-Sayed et al 2020d , e , f ; El-Sayed 2021 ; El-Sayed et al 2022b ; c ).…”

Section: Discussionmentioning

confidence: 94%

“…Similarly, the same irradiation dose successfully intensified the antimicrobial, antioxidant, and anticancer activities from extract of the same strains A. sydowii , A. flavus (El-Sayed et al 2022a ). Also, the same irradiation dose improved production of the cardiac glycoside digoxin to a five-fold increase by Epicoccum nigrum (El-Sayed et al 2020b ). Moreover, the same effect of exposure to gamma rays on the survival and the fungal growth was observed by previous reports (Awan et al 2011 ; El-Sayed and Zaki 2022 ; El-Sayed et al 2019a ; b ; c ).…”

Section: Discussionmentioning

confidence: 99%

Bioprospecting endophytic fungi for antifeedants and larvicides and their enhancement by gamma irradiation

et al. 2022

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The search and discovery of new natural products with antifeedant and larvicidal potentials to mitigate harmful insects are scientific pressing issues in the modern agriculture. In this paper, the antifeedant and larvicidal potentials of 69 fungal isolates were screened against the Egyptian cotton leafworm Spodoptera littoralis. A total of 17 isolates showed the insecticidal potentials with three promising isolates. These strains were Aspergillus sydowii, Lasiodiplodia theobromae, and Aspergillus flavus isolated from Ricinus communis (bark), Terminalia arjuna (Bark), and Psidium guajava (twigs), respectively. The effect of gamma irradiation on the antifeedant and larvicidal activities of the three strains was investigated. Exposure of the fungal spores to 1000 Gy of gamma rays significantly intensified both the antifeedant and larvicidal potentials. To identify compounds responsible for these activities, extracts of the three strains were fractionated by thin layer chromatography. The nature of the separated compounds namely, Penitrem A, 1, 3, 5, 8- tetramethyl- 4, 6-diethyl- 7- [2- (methoxycarbonyl)ethyl] porphyrin (from A. sydowii), Penitrem A, 2, 7, 12, 17-Tetramethyl-3, 5:8, 10:13, 15:18, 20-tetrakis (2,2-dimethylpropano) porphyrin (from A. flavus), N,N-Diethyl-3-nitrobenzamide, and Diisooctyl-phthalate (from L. theobromae) were studied by GC-MS analysis. These findings recommend endophytic fungi as promising sources of novel natural compounds to mitigate harmful insects.

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Exploiting the exceptional biosynthetic potency of the endophytic Aspergillus terreus in enhancing production of Co3O4, CuO, Fe3O4, NiO, and ZnO nanoparticles using bioprocess optimization and gamma irradiation

Cited by 25 publications

References 42 publications

Improving carboxymethyl cellulose edible coating using ZnO nanoparticles from irradiated Alternaria tenuissima

Improving carboxymethyl cellulose edible coating using ZnO nanoparticles from irradiated Alternaria tenuissima

Harnessing endophytic fungi for biosynthesis of selenium nanoparticles and exploring their bioactivities

Bioprospecting endophytic fungi for antifeedants and larvicides and their enhancement by gamma irradiation

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