Biosynthesis of silver nanoparticles from Spirulina microalgae and its antibacterial activity

Govarthanan, Muthusamy; Selvankumar, Thangasamy; Raja, M Mohamed Mahroop; Sudhakar, Chinnappan; Selvam, Kandasamy

doi:10.1007/s11356-017-9772-0

Cited by 102 publications

(37 citation statements)

References 27 publications

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“…Meanwhile, microalgae are considered as a promising tool for nanoparticle production due to their high growth rates and high biomass production. Cyanobacteria, such as Gloeocapsa sp., Lyngbya majuscula, Spirulina platensis, and Anabaena variabilis, have been reported for the biosynthesis of intracellular silver, gold, palladium, and platinum nanoparticles (NPs) [7,[13][14][15][16]. Qualities of nanoparticles are strongly correlated to their size where the high surface-to-volume ratio of nanoparticles resulted in tremendous increase in their physical, chemical, and biological properties [17].…”

Section: Introductionmentioning

confidence: 99%

Green production of silver nanoparticles, evaluation of their nematicidal activity against Meloidogyne javanica and their impact on growth of faba bean

Hamed

Hagag

El-Raouf

2019

Beni-Suef Univ J Basic Appl Sci

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Background: Cyanobacterium-based silver nanoparticles are considered not only as an efficient nano-nematicide but also as a bio-stimulant material for plant growth. They could be employed as a part of an integrated program for controlling some plant diseases. Results: In this study, silver nanoparticles (Ag-NPs) were biosynthesized from aqueous extract of the cyanobacterium, Nostoc sp. PCC7524. Full characterization of the biosynthesized Ag-NPs was monitored by UV-vis spectroscopy, transmission electron microscopy, X-ray diffraction pattern, Zeta sizer, and Fourier transform infrared spectroscopy. In vitro assay against the root-knot nematode Meloidogyne javanica showed that Ag-NPs significantly decreased egg hatching of M. javanica at different applied concentrations (3, 6, 12, 25, and 50%, v/v). Fifty percent of Ag-NPs induced the highest reduction percent (94.66%). Moreover, Ag-NPs and AgNO 3 significantly increased the percentages of larval mortality of the second-stage juveniles (J 2) with concentration and time-dependent responses. Ag-NPs or AgNO 3 at 2.4 ml/l, 24 h, completely inhibited the growth of J 2 compared to 23% inhibition using aqueous cyanobacterial extract (ACE). In vivo effect of Ag-NPs on faba bean-infected plant under greenhouse conditions was achieved by treating soil with three different concentrations of 1, 2, and 3 ml/kg soil over two consecutive seasons. Ag-NPs significantly reduced root galling from 39.6 to 78.7% and J 2 population in the soils from 32.2% to 86.7% in the 2018 season and from 21.9 to 78.1% and 40.0 to 81.0% in the 2019 season, respectively. Moreover, 3 ml/kg soil of Ag-NP treatment showed statistically comparable effects to that of vydate nematicide but with remarkable enhancement of faba bean growth parameters as compared to those of vydate or AgNO 3 treatments in the two seasons. Conclusions: The considerable in vitro and in vivo nematicidal potential of the cyanobacterium-based Ag-NPs, besides their bio-stimulant effect on plant growth, makes them feasible for the biological control of M. javanica.

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Section: Introductionmentioning

confidence: 99%

Green production of silver nanoparticles, evaluation of their nematicidal activity against Meloidogyne javanica and their impact on growth of faba bean

Hamed

Hagag

El-Raouf

2019

Beni-Suef Univ J Basic Appl Sci

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“…Since spirulina is rich in amino acids (AAs), fatty acids (FAs), docosahexaenoic acid, vitamins and diverse minerals, spirulina has been considered as “the most ideal food in the 21st century” by the World Health Organization, and the Food and Agriculture Organization of the United Nations (Batista, Gouveia, Bandarra, Franco, & Raymundo, ; Gupta, Aglave, & Lokhande, ). Meanwhile, spirulina also contains various bioactive components, such as polysaccharide, cyanobacteria protein, beta carotene, linoleic acid and γ‐linolenic acid, exhibiting the characteristics of antibacterial, anti‐oxidation, antivirus and immunity enhancement (BingyueWang et al, ; Muthusamy, Thangasamy, Raja, Chinnappan, & Kandasamy, ; Wu et al, ).…”

Section: Introductionmentioning

confidence: 99%

Effects of Spirulina algae as a feed supplement on nutritional value and flavour components of silkie hens eggs

Chen

Cai

et al. 2019

Animal Physiology Nutrition

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Objective Silkie chicken (Gallus gallus domesticus brisson) is also named Chinese Taihe chicken, characterized by blue comb, green earlobes, black skin, meat and bones. This study aimed to evaluate the effects of spirulina feeding on the nutritive value and flavour of silkie hens eggs. Methods A total of 280 Silkie hens of 42 weeks old were fed 4 different diets, including basal diet and basal diet containing 0.1%, 0.3% and 0.5% spirulina. Each diet group was divided into 70 Silkie hens experimentally. The production performance of silkie hens, the nutritional compositions [e.g., amino acids (AAs) and fatty acids] and flavour substances of silkie hens eggs were compared with control. Results A 0.3% and 0.5% spirulina feeding significantly increased the average egg production rate and average egg weight, while only 0.3% spirulina feeding decreased both the average daily feed intake and feed conversion ratio of silkie hens compared with the controls (p < 0.05). The contents of crude protein, fat, cholesterol and Ca in silkie hens eggs were significantly increased by 0.3% spirulina feeding (p < 0.05). Only fat and cholesterol were significantly increased by 0.5% spirulina but had no significant difference compared with 0.3% spirulina. The flavour, amino acids/total AAs, and saturated fatty acids/unsaturated fatty acids in silkie hens eggs were significantly increased by 0.3% spirulina feeding than other groups (p < 0.05). A total of 46 volatile substances were identified in silkie hens eggs, and the substances of total acids, alkanes and aldehydes were significantly increased by 0.3% spirulina feeding. Conclusion Spirulina feeding at a proportion of 0.3% improved the production performance of silkie hens, and nutritive value and flavour of silkie hens eggs.

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“…The green synthesized AgNPs using Spirulina platensis were studied its bactericidal activity against Staphylococcus sp. and Klebsiella sp by Muthusamy et al, [46]. The results indicated that the increasing concentration of AgNPs effectively encountered the bacterial population.…”

Section: Biological Activities Of Microalgae Silver Nanoparticles (Agmentioning

confidence: 88%

Microalgae Mediated Silver Nanoparticles (Ag-Nps) Synthesis and Their Biological Activities

Dhavale¹,

Jadhav²,

Sibi³

2020

jcr

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Silver ions and silver based compounds are known bactericides. Silver nanoparticles (Ag-NPs) show efficient antibacterial activity due to the large surface area that comes in contact with the microbial cells and therefore, has a higher percentage of interaction than larger particles of the same parent material. With nanoparticles integrated in consumers' health and industrial products, it is necessary to develop techniques that implement a bio-synthesis of nanoparticles. Microalgae based nanoparticles have received attention due to their outstanding properties such as biocompatibility, biodegradability and low cost. In this study, microalgae as model biological systems for their ability to form Ag-NPs were reviewed. Further, biological activities of microalgae synthesized Ag-NPs as reported by earlier studies were evaluated.

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Biosynthesis of silver nanoparticles from Spirulina microalgae and its antibacterial activity

Cited by 102 publications

References 27 publications

Green production of silver nanoparticles, evaluation of their nematicidal activity against Meloidogyne javanica and their impact on growth of faba bean

Green production of silver nanoparticles, evaluation of their nematicidal activity against Meloidogyne javanica and their impact on growth of faba bean

Effects of Spirulina algae as a feed supplement on nutritional value and flavour components of silkie hens eggs

Microalgae Mediated Silver Nanoparticles (Ag-Nps) Synthesis and Their Biological Activities

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