The efficient role of algae as green factories for nanotechnology and their vital applications

El‐Sheekh, Mostafa M.; Morsi, Hanaa H.; Hassan, Lamiaa; Ali, Sameh S.

doi:10.1016/j.micres.2022.127111

Cited by 21 publications

(12 citation statements)

References 141 publications

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“…Nanoscience has witnessed rapid advancements in various fields and has been applied to numerous critical medical and industrial applications ( El-Sheekh, et al, 2022 ). Over the last few decades, nanotechnology has entered daily life through various applications ( Panda et al, 2020 ).…”

Section: Introductionmentioning

confidence: 99%

“…Algae gained increasing attention from nanotechnology scientists, and paved the way for the emergence of “algae nanotechnology” as a promising field. It is referred to as phyco-nanotechnology since algae are widespread and photoautotrophs ( Khalid, 2019 ; Bhuyar et al, 2020 ; Rahman et al, 2020 ; Ingle et al, 2021 ; El-Sheekh et al, 2022 ). Algae can biosynthesis nanoparticles, either intracellularly or extracellularly, depending on their cellular reactions, secondary metabolites, or extraction of algal contents.…”

Section: Introductionmentioning

confidence: 99%

“…Algae can biosynthesis nanoparticles, either intracellularly or extracellularly, depending on their cellular reactions, secondary metabolites, or extraction of algal contents. This can be achieved through their capability to reduce hyperaccumulating metal ions and convert them to stable forms, which accordingly helps regulate the synthesis of environmentally safe and effective nanoparticles with various characteristics ( El-Sheekh et al, 2022 ; Hanna et al, 2022 ). They help in reducing and capping the produced nanoparticles at normal room temperature and pressure.…”

Section: Introductionmentioning

confidence: 99%

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Polycladia myrica-based delivery of selenium nanoparticles in combination with radiotherapy induces potent in vitro antiviral and in vivo anticancer activities against Ehrlich ascites tumor

Abo-Neima

Ahmed

El‐Sheekh

et al. 2023

Front. Mol. Biosci.

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Background: Over the last few decades, nanotechnology has entered daily life through various applications, therefore, there has been a trend toward developing new approaches to green-mediated nanotechnology that encourage nanomaterial formation through biological methods such as plants or microorganisms. Algae have gained increasing attention from nanotechnology scientists and have paved the way for the emergence of “algae nanotechnology” as a promising field.Methods: Via using the aqueous extract of the brown alga Polycladia myrica, selenium nanoparticles were synthesized and characterized by using seven instruments: SEM, TEM, UV spectra, Zeta potential, EDX, X-ray diffraction, and FTIR. P. myrica selenium nanoparticles (PoSeNPs) were then examined for their antiviral activity against HSV-1 (Herpes simplex I) and anticancer against human colon cancer cell line (HCT-116) in vitro and in vivo alone and in combination with laser therapy of power 2 mW against Ehrlich carcinoma (EAC).Results: PoSeNPs ranging between 17.48 nm and 23.01 nm in size, and EDX revealed the selenium mass and its atoms as 0.46% ± 0.07% and 0.08% ± 0.01% respectively. Their anticancer potentiality in vitro was with maximum inhibitions of 80.57% and 73% and IC50 = 14.86 μg/mL and 50 mg/mL against HCT-116 and EAC cell lines respectively, while their in vivo alone and in combination with laser therapy of power 2 mW showed a potent therapy effect against Ehrlich ascites carcinoma (EAC).Conclusion: This study concluded that PoSeNPs do not have a toxic effect; they exhibit high effectiveness as a photothermal agent for cancer therapy, with promising applications in future biomedical fields. The combined therapy showed a significant decrease in tumor volume, massive tumor cell necrosis, shrinking, and disappearance. It also showed improvement in liver TEM, histology, kidney function: urea and creatinine, and liver enzymes: ALT, and AST.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Polycladia myrica-based delivery of selenium nanoparticles in combination with radiotherapy induces potent in vitro antiviral and in vivo anticancer activities against Ehrlich ascites tumor

Abo-Neima

Ahmed

El‐Sheekh

et al. 2023

Front. Mol. Biosci.

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“…The currents I f _1 and I f _2 shown in ( 5) are affected by channel length modulation and the transconductance of a transistor. Combining (3) with ( 6), the duty cycle D out is obtained in (7), as shown at the bottom of the next page.…”

Section: Circuit Descriptions and Simulation Resultsmentioning

confidence: 99%

“…[2], [3], [4], [5], [6], [7], [8], [9], [10], [11], [12], [13], [14], [15], [16], [17], [18], [19], [20], [21], [22], [23], [24], [25], [26], [27], [28], [29], [30], [31], [32], [33], [34], [35], [36], [37], [38], [39], [40], [41], [42], [43], [44], [45], [46], [47], [48], [49], [50], [51], [52], [53], [54],…”

Section: Introductionunclassified

A CMOS Algae Growth Period Monitor for Algaculture Applications

et al. 2022

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In this work, a complementary metal-oxidesemiconductor (CMOS) algae growth period monitor is newly investigated for algaculture applications. The proposed monitor includes an algae sensor and a CMOS converter. The proposed monitor can transform the algae growth period into a duty cycle linearly. Through the duty cycle of the proposed CMOS converter, the algae growth status could be easily and quickly obtained. In addition, in order to be adaptively utilized in different kinds of algae growth environments, the proposed CMOS converter has a wide differential rail-to-rail voltage to the current converter and the adjustment sensitivity circuits. The measured wide-range differential rail-to-rail voltage of the CMOS converter was from −1.5 to 1.5 V, and the range of output duty cycle corresponded from 1.04% to 99.3%. The sensitivities could be varied to 41.21%/V, 32.8%/V, 27.38%/V, and 23.5%/V, respectively. The measured range of algae growth period was 1 to 5.5 days, and the range of output duty cycle was 24.96%-90.19% under different concentrations of algae nutrients (0.6‰, 0.8‰, and 1‰). A 0.49% of the measured maximum linear error was obtained. Lastly, two types of algae (Nannochloropsis sp. and Isochrysis galbana) were experimented. Convinced by the measurements and experiments, the proposed CMOS algae growth period monitor had correct functionalities for algaculture applications.

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