Enzymatically and/or thermally treated Macroalgae biomass as feedstock for fermentative H-2 production

Autor(es)

Rodrigues, Emelin Leandro ^[1] ; Fonseca, Bruna Constante ^[1] ; Gelli, Valeria Cress ^[2] ; Carli, Sibeli ^[1] ; Meleiro, Luana Parras ^[1] ; Melo Furriel, Rosa Prazeres ^[1] ; Reginatto, Valeria ^[1]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Dept Quim, FFCLRP, Av Bandeirantes 3900, BR-14040030 Ribeirao Preto, SP - Brazil

^[2] Secretaria Agr & Abastecimento Estado Sao Paulo, Nucleo Pesquisa & Dev Litoral Norte, Agencia Paulista Pesquisa Agr, Dept Pesca, Sao Paulo - Brazil

• Tipo de documento: Artigo Científico
• Fonte: MATERIA-RIO DE JANEIRO; v. 24, n. 2 2019.
• Citações Web of Science: 0

Resumo

Due to its high carbohydrate content, algae biomass can be employed as feedstock to produce hydrogen (H2) by fermentation. However, to make the carbohydrates entrapped within the cell wall more bioavailable, algae biomass must be treated before fermentation. We submitted Kappaphyccus alvarezzi macroalgae biomass to autoclave (at 120 degrees C and 1 atm for 6 h) treatment and/or enzymatic (Celluclast (R) and/or a recombinant beta-glucosidase) hydrolysis, to break down complex carbohydrates into available sugars that were used to produce H2 by fermentation. Macroalgae biomass treated with Celluclast (R)+beta-glucosidase and with combined thermal treatment and enzymatic hydrolysis reached very similar TRS productivities, 0.24 and 0.22 g of TRS/L.h, respectively. The enzymatically treated biomass was employed as feedstock to produce H2 by Clostridium beijerinckii Br21, which afforded high yield: 21.3 mmol of H2/g of dry algae biomass. Hence, treatment with Celluclast (R) and recombinant beta-glucosidase provided macroalgae biomass for enhanced bioconversion to H2 by C. beijerinckii Br21. (AU)

• Processo FAPESP: 15/06074-1 - Produção de biohidrogênio de terceira geração a partir de biomassa de alga e seus derivados de hidrólise
• Beneficiário: Valeria Reginatto Spiller
• Modalidade de apoio: Auxílio à Pesquisa - Programa BIOEN - Regular