Alterations in proteins and amino acids of the Nile cyanobacteria Pseudanabaena limnetica and Anabaena wisconsinense in response to industrial wastewater pollution

El‐Sheekh, Mostafa M.; El-Otify, Ahmed Mohamed; Saber, Hani

doi:10.1590/s1516-89132011000400022

Cited by 6 publications

(4 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The reports of 15,16 very well corroborate the results of this study. An increase in carbohydrate level shows increased growth and metabolism because vermiwash contains an optimal content of nutrients as observed by 17 , in their studies on the effects of industrial wastewater on cyanobacterial growth. Histological Studies: Internodal cross-sections of the treated and control plants were taken to analyze, the changes in the anatomical features, the increment in the vascular tissues and the bastfibre zone.…”

Section: Methodsmentioning

confidence: 82%

Untitled

2021

IJPSR

View full text Add to dashboard Cite

Growth and development events in plants are controlled by growth regulators and Phytohormones. These are found naturally in plants. Environmental Pollution is one of the major problems and reactions caused by artificial growth regulators and their low biodegradability has urged us to search for new biofertilizers with growth-regulating activity. Vermiwash is a liquid fertilizer that has been shown to mimic phytohormones in bringing about growth-promoting effects. In the present study vermiwash at 100% and 50% concentration and Gibberellic acid treatment along with a control treatment with distilled water were given to Hibiscus cannabinus L.,a conventional fiber crop in order to determine the growth-promoting effect of vermiwash in comparison to Gibberellic acid. The results showed that vermiwash at lower concentration was able to bring about enhanced growth which has been observed as an increase in the height of the plant, length and width of internode and has been substantiated by an increase in the bast fiber zone as seen from the histological studies. It is thus revealed that vermiwash could be used to increase the fiber content and thus can be employed to exploit eco-friendly sources of fibers as a substitute for plastic.

show abstract

Section: Methodsmentioning

confidence: 82%

Untitled

2021

IJPSR

View full text Add to dashboard Cite

show abstract

“…Nostoc muscorum and Anabaena spp. The two Cyanobacterial strains, namely, Nostoc muscorum and Anabaena subcylinderica have been extensively applied for assessing the extent of pollution caused by industrial effluents (El-Sheekh et al 2011). In another study the amounts of magnesium, calcium, sulphate, nickel and zinc showed reduction after treatment with Cyanobacterial consortium.…”

Section: Limitations Of Cyanobacteria-based Wastewater Treatmentmentioning

confidence: 99%

The usage of Cyanobacteria in wastewater treatment: prospects and limitations

Ahmad

2022

Letters in Applied Microbiology

View full text Add to dashboard Cite

The applicability of Cyanobacteria executes various roles in the treatment of wastewater, assembling of superfluous food and, thus, produces valued biomass which has various applications. Besides this, they enrich and improve the quality of water as they are photosynthetic autotrophs. Currently, Cyanobacteria gained momentum for remediation of wastewaters because firstly, they enhances the O2 content of waters through photosynthesis and perform bioremediation of some heavy metals. Secondly, Cyanobacteria play significant roles in distressing the biological oxygen demand, chemical oxygen demand, turbidity, minerals and microbes; thirdly, they can be used either as axenic cultures or as mixed cultures both offering distinct advantages. Lastly, some species are tolerant towards extreme temperatures both low and high, acidic pH, high salt concentrations and heavy metals, which makes them outstanding candidates for the wastewater treatment plants. The suitable immobilization methods must evolve, better understanding of their morphological and biochemical parameters is required for the optimum growth, easy methods of harvesting the biomass after the treatment are required and more trials on large‐scale basis are required before they can be launched on full‐fledged basis for wastewater treatments.

show abstract

“…On the other hand, cyanobacteria, which constitute a group of ancient ubiquitous phototrophic bacteria (Abed et al, 2009;Garcia-Pichel, 2009), are resistant to extreme conditions of temperature, pH, heavy metals, and high salinity and, thus, are suitable for bioremediation (Gaurav et al, 2018;Ahmad, 2022;Lakmali et al, 2022). Although cyanobacteria have the ability to successfully remove nitrogen and phosphate from wastewaters (Lincoln et al, 1996;Kumar et al, 2011;El-Sheekh et al, 2011;Jitha and Madhu, 2016;Kabariya and Ramani, 2016;Ouhsassi et al, 2020;Álvarez et al, 2020;Ahmad, 2022), they have been mainly investigated for the production of high-value compounds, both naturally produced and metabolically engineered, thanks to their ease of genetic manipulation. These compounds can be extruded or derivatives of biomass, such as pigments (Kabariya and Ramani, 2018;Menin et al, 2019;Arashiro et al, 2020;Thevarajah et al, 2023).…”

Section: Introductionmentioning

confidence: 99%

Coupling dairy wastewaters for nutritional balancing and water recycling: sustainable heterologous 2-phenylethanol production by engineered cyanobacteria

Usai,

Cordara,

Mazzocchi

et al. 2024

Front. Bioeng. Biotechnol.

View full text Add to dashboard Cite

Microalgae biotechnology is hampered by the high production costs and the massive usage of water during large-volume cultivations. These drawbacks can be softened by the production of high-value compounds and by adopting metabolic engineering strategies to improve their performances and productivity. Today, the most sustainable approach is the exploitation of industrial wastewaters for microalgae cultivation, which couples valuable biomass production with water resource recovery. Among the food processing sectors, the dairy industry generates the largest volume of wastewaters through the manufacturing process. These effluents are typically rich in dissolved organic matter and nutrients, which make it a challenging and expensive waste stream for companies to manage. Nevertheless, these rich wastewaters represent an appealing resource for microalgal biotechnology. In this study, we propose a sustainable approach for high-value compound production from dairy wastewaters through cyanobacteria. This strategy is based on a metabolically engineered strain of the model cyanobacterium Synechococcus elongatus PCC 7942 (already published elsewhere) for 2-phenylethanol (2-PE). 2-PE is a high-value aromatic compound that is widely employed as a fragrance in the food and cosmetics industry thanks to its pleasant floral scent. First, we qualitatively assessed the impact of four dairy effluents on cyanobacterial growth to identify the most promising substrates. Both tank-washing water and the liquid effluent of exhausted sludge resulted as suitable nutrient sources. Thus, we created an ideal buffer system by combining the two wastewaters while simultaneously providing balanced nutrition and completely avoiding the need for fresh water. The combination of 75% liquid effluent of exhausted sludge and 25% tank-washing water with a fine-tuning ammonium supplementation yielded 180 mg L−1 of 2-PE and a biomass concentration of 0.6 gDW L-1 within 10 days. The mixture of 90% exhausted sludge and 10% washing water produced the highest yield of 2-PE (205 mg L−1) and biomass accumulation (0.7 gDW L−1), although in 16 days. Through these treatments, the phosphates were completely consumed, and nitrogen was removed in a range of 74%–77%. Overall, our approach significantly valorized water recycling and the exploitation of valuable wastewaters to circularly produce marketable compounds via microalgae biotechnology, laying a promising groundwork for subsequent implementation and scale-up.

show abstract

Alterations in proteins and amino acids of the Nile cyanobacteria Pseudanabaena limnetica and Anabaena wisconsinense in response to industrial wastewater pollution

Cited by 6 publications

References 21 publications

Untitled

Untitled

The usage of Cyanobacteria in wastewater treatment: prospects and limitations

Coupling dairy wastewaters for nutritional balancing and water recycling: sustainable heterologous 2-phenylethanol production by engineered cyanobacteria

Contact Info

Product

Resources

About