Isolation and identification of microalgal strains with potential as carotenoids producers from a municipal solid waste landfill

Suárez-Montes, D.; Borrell, Yaisel J.; González, José Manuel; Rico, José

doi:10.1016/j.scitotenv.2021.149755

Cited by 10 publications

(4 citation statements)

References 55 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…To perform phylogenetic analysis, a total of 81 sequences, 76 of them from microalgae including type and reference strains for Coelastrella and Chlorella genera retrieved from GenBank (National Center for Biotechnology Information, NCBI, Bethesda, MD, USA) and 5 sequences that were obtained in this work, were used. The selection of sequences chosen to perform this analysis was based on the most recent studies on these genera [ 29 , 30 , 31 , 32 , 33 ]. Multiple sequence alignment was conducted using ClustalW in MEGA7 [ 34 , 35 ], and sequences were manually proofread and edited.…”

Section: Methodsmentioning

confidence: 99%

Isolation and Identification of Lichen Photobionts Collected from Different Environments in North of Portugal and Evaluation of Bioactivities of Their Extracts

Loureiro,

Morais,

Silva

et al. 2024

Foods

View full text Add to dashboard Cite

Lichens are organisms constituted by a symbiotic relationship between a fungus (mycobiont) and a photoautotrophic partner (photobiont). Lichens produce several bioactive compounds; however, the biotechnological exploitation of this organism is hampered by its slow growth. To start studying the possibility of exploiting lichens as alternative sources of bioactive compounds, eighteen lichens were collected in the north of Portugal in order to isolate and study the bioactivity of their photobionts. It was possible to isolate and cultivate only eight photobionts. Three of them, LFR1, LFA2 and LCF3, belong to the Coelastrella genus, the other two (LFA1 and LCF1) belong to the Chlorella genus and for the remaining three photobionts, LFS1, LCA1 and LCR1, it was impossible to isolate their microalgae. These only grow in consortium with bacteria and/or cyanobacteria. All extracts showed antioxidant activity, mainly at a concentration of 10 mg.mL−1. LFS1, a consortium extract, showed the highest antioxidant power, as well as the highest concentration of phenolic compounds (5.16 ± 0.53 mg of gallic acid equivalents (GAE).g−1). The extracts under study did not show significant antibacterial activity against Escherichia coli, Listeria or Salmonella. The Coelastrella sp. and LFA1 extracts showed the highest hyaluronidase inhibition. The LFR1 extract at a concentration of 5 mg.mL−1 showed the highest anti-inflammatory activity (79.77 ± 7.66%). The extracts of Coelastrella sp. and LFA1 also showed greater antidiabetic activity, demonstrating the high inhibitory power of α-amylase and α-glucosidase. LFR1 at a concentration of 5 mg.mL−1, due to its selective cytotoxicity inhibiting the growth of cancer cells (Caco-2 cells), is a promising anticancer agent.

show abstract

Section: Methodsmentioning

confidence: 99%

Isolation and Identification of Lichen Photobionts Collected from Different Environments in North of Portugal and Evaluation of Bioactivities of Their Extracts

Loureiro,

Morais,

Silva

et al. 2024

Foods

View full text Add to dashboard Cite

show abstract

“…The Desmodesmus strain was the property of STAM SLR (Italian Engineering company) and a sample was shipped to Neoalgae for preliminary tests. Chlorella vulgaris was provided by the Culture Collection of Algae and Protozoa (CCAP 211/109), and Tetradesmus obliquus CE.402 (formerly known as Scenedesmus obliquus) was provided by the strain repository of Neoalgae Micro Seaweed Products (Gijon, Spain), and was isolated from an urban waste landfill in Asturias, Spain [35].…”

Section: Microalgae Strainsmentioning

confidence: 99%

Revolutionizing Agriculture: Leveraging Hydroponic Greenhouse Wastewater for Sustainable Microalgae-Based Biostimulant Production

Álvarez-Gil,

Blanco-Vieites,

Suárez-Montes

et al. 2023

Sustainability

View full text Add to dashboard Cite

The current intensification in agricultural pressure has resulted in the addition of excessive amounts of nutrients. While hydroponic systems have become an agricultural tool to reduce this nutrient addition, the produced nutrient-rich drainage solution, which has a negative effect in water bodies, is still a barrier that needs to be overcome. A promising alternative for nutrient recovery is the cultivation of microalgae, which require a significant quantity of nutrients for their growth. Furthermore, their biostimulant properties enhance the circularity and sustainability approach. This study evaluates microalgae growth with a hydroponic drainage solution and the use of the resulting biomass as a source for biostimulant. Three microalgae strains were tested (Desmodesmus sp., Chlorella vulgaris, and Scenedesmus obliquus) and grown at laboratory scale (0.5 and 2 L) with drainage wastewater taken from hydroponic tomato crops. Measures of OD750 and OD680 revealed Desmodesmus sp. as the strain with the best performance, achieving 1.4 and 1.8, respectively, in the 0.5 L assay and 1.08 and 1.3 in the 2 L assay. These results were confirmed in another assay that compared Desmodesmus sp. growth in drainage wastewater and in control media. Then, Desmodesmus sp. was tested at industrial scale. Results show the columnar PBR reached 1.8 g·L−1 compared to 1.1 g·L−1 achieved with raceways. Finally, the resulting biomass was tested in a biocatalysis process for biostimulant production, suggesting an innovative system to use microalgae biomass cultured in wastewater as a valuable product such as biostimulant.

show abstract

“…A pesquisa que foi realizada juntamente com os critérios que filtravam os resultados, foram sumarizados na Tabela 1. Observando a tabela, percebe-se uma tendência na busca por biocombustíveis (Gohain et al, 2021;Zhao et al, 2021;Katiyar et al, 2021) e precursores industriais de importância Kim, 2021;Zhang et al, 2021;), em especial lipídeos (Ummalyma;Singh, 2022;Arutselvan et al, 2021;Guo et al, 2022;Coşgun et al, 2021;Brindhadevi et al, 2022;Chi et al, 2022;Cepas et al, 2021;Wang et al, 2021;Zhang et al, 2021), além dos carotenoides (Suarez-Montes et al, 2022;Borella et al, 2022;Ashokkumar et al, 2021;Zhang et al, 2021). É importante destacar o potencial das microalgas na produção de combustíveis, já que são apontadas como uma das mais promissoras fontes de matéria-prima para biocombustíveis da história recente dentro do contexto ambiental (Peter et al, 2021).…”

Section: Produtos Biotecnológicos E Métodos De Cultivounclassified

Produtos biotecnológicos de microalgas: uma análise de tendências

Barbosa,

Leite,

Mesquita

et al. 2023

Sci. Electronic Arch

View full text Add to dashboard Cite

As microalgas são microrganismos heterogêneos, versáteis e disponíveis em todo o mundo. Seu uso tem sido descrito em várias áreas, com vários objetivos, especialmente na remediação de resíduos de variadas origens. Neste artigo, é apresentado um levantamento bibliográfico de trabalhos publicados em periódicos de alto impacto, utilizando como critério de pesquisa as palavras chave “chlorococcum” e “bioproducts”. Posteriormente, esses trabalhos foram filtrados, sendo considerados apenas aqueles publicados em revistas com fator de impacto igual ou superior a 5. Por último, foi realizada uma triagem dos resultados para separar artigos de pesquisa de artigos de revisão. Foram obtidos, após a pesquisa em três bases de dados e triagem, 238 trabalhos, entre revisões e artigos de pesquisa. Ao fim dos filtros, o número final de artigos utilizados no relatório foi de 128 trabalhos. Após análise, pôde-se perceber o crescimento recente do interesse do uso de microalgas para remediação de águas residuárias e outros resíduos, bem como para a produção de moléculas de interesse, principalmente carotenoides, e também do uso dessa biomassa para produção de combustíveis, em especial o biodiesel.

show abstract

Isolation and identification of microalgal strains with potential as carotenoids producers from a municipal solid waste landfill

Cited by 10 publications

References 55 publications

Isolation and Identification of Lichen Photobionts Collected from Different Environments in North of Portugal and Evaluation of Bioactivities of Their Extracts

Isolation and Identification of Lichen Photobionts Collected from Different Environments in North of Portugal and Evaluation of Bioactivities of Their Extracts

Revolutionizing Agriculture: Leveraging Hydroponic Greenhouse Wastewater for Sustainable Microalgae-Based Biostimulant Production

Produtos biotecnológicos de microalgas: uma análise de tendências

Contact Info

Product

Resources

About