Chemical Characterization of Microcystis aeruginosa for Feed and Energy Uses

Autor(es)

Passos, Larissa Souza ^[1] ; Almeida, Eryka Costa ^[1] ; de Pereira, Claudio Martin Pereira ^[2] ; Casazza, Alessandro Alberto ^[3] ; Converti, Attilio ^[3] ; Pinto, Ernani ^{[4, 1, 5]}

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Fac Pharmaceut Sci, Dept Clin & Toxicol Anal, Ave Prof Lineu Prestes 580, Bl 17, BR-05508900 Sao Paulo - Brazil

^[2] Univ Fed Pelotas, Ctr Chem Pharmaceut & Food Sci, Bioforens Res Grp, BR-96010900 Pelotas, RS - Brazil

^[3] Univ Genova UNIGE, Dept Civil Chem & Environm Engn, Pole Chem Engn, Via Opera Pia 15, I-16145 Genoa - Italy

^[4] Univ Sao Paulo, Ctr Nucl Energy Agr CENA, Ave Centenario 303, BR-13416000 Piracicaba, SP - Brazil

^[5] Univ Sao Paulo, Food Res Ctr FoRC CEPID, Rua Lago, 250, Ed Semi Ind, Bloco C, BR-05508080 Sao Paulo 05508080 - Brazil

• Tipo de documento: Artigo Científico
• Fonte: ENERGIES; v. 14, n. 11 JUN 2021.
• Citações Web of Science: 0

Resumo

Cyanobacterial blooms and strains absorb carbon dioxide, drawing attention to its use as feed for animals and renewable energy sources. However, cyanobacteria can produce toxins and have a low heating value. Herein, we studied a cyanobacterial strain harvested during a bloom event and analyzed it to use as animal feed and a source of energy supply. The thermal properties and the contents of total nitrogen, protein, carbohydrate, fatty acids, lipid, and the presence of cyanotoxins were investigated in the Microcystis aeruginosa LTPNA 01 strain and in a bloom material. Microcystins (hepatotoxins) were not detected in this strain nor in the bloom material by liquid chromatography coupled to mass spectrometry. Thermogravimetric analysis showed that degradation reactions (devolatilization) initiated at around 180 degrees C, dropping from approximately 90% to 20% of the samples' mass. Our work showed that despite presenting a low heating value, both biomass and non-toxic M. aeruginosa LTPNA 01 could be used as energy sources either by burning or producing biofuels. Both can be considered a protein and carbohydrate source similar to some microalgae species as well as biomass fuel. It could also be used as additive for animal feed; however, its safety and potential adverse health effects should be further investigated. (AU)

• Processo FAPESP: 20/00109-6 - Avaliação da toxicidade de cianopeptídeos em peixes para consumo humano provenientes de pisciculturas em tanques-rede
• Beneficiário: Larissa Souza Passos
• Modalidade de apoio: Bolsas no Brasil - Mestrado
• Processo FAPESP: 13/07914-8 - FoRC - Centro de Pesquisa em Alimentos
• Beneficiário: Bernadette Dora Gombossy de Melo Franco
• Modalidade de apoio: Auxílio à Pesquisa - Centros de Pesquisa, Inovação e Difusão - CEPIDs