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Bioconversion of hydrolyzed cashew peduncle bagasse for ethanol and xylitol production
ABSTRACT The agro-industrial waste deposited in the environment causes problems in nature that can be solved with the use and generation of bioproducts. Thus, the objective was to study the lignocellulosic fraction of cashew (Anacardium occidentale L.) peduncle bagasse and fermentation on large scal...
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Published in: | Revista brasileira de engenharia agrícola e ambiental 2017-07, Vol.21 (7), p.488-492 |
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Main Authors: | , , , , , |
Format: | Article |
Language: | English |
Subjects: | |
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Online Access: | Get full text |
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Summary: | ABSTRACT The agro-industrial waste deposited in the environment causes problems in nature that can be solved with the use and generation of bioproducts. Thus, the objective was to study the lignocellulosic fraction of cashew (Anacardium occidentale L.) peduncle bagasse and fermentation on large scale (8-16 times) using the strain Candida guilliermondii CCT-3544 as production agent. According to the obtained results, it can be noted that the dry cashew peduncle bagasse has 21.45% of cellulose, 10.96% of hemicellulose and 35.39% of lignin. During fermentation, C. guilliermondii 3544-CAT was able to grow on medium containing hydrolysate, with maximum cell growth concentration of 3.5 g L-1. The behavior of the sugars in the fermentation process was similar in the different variables, with maximum production of ethanol and xylitol at 48 h of fermentation.
RESUMO Os resíduos agroindustriais depositados no meio ambiente favorecem problemas na natureza, passíveis de serem solucionados com o aproveitamento e geração de bioprodutos. Assim, objetivou-se estudar a fração lignocelulósica do bagaço do pedúnculo do caju (Anacardium occidentale L.) e a fermentação em escala ampliada (8 a 16 vezes) utilizando a estirpe Candida guilliermondii CCT-3544 como agente de produção. De acordo com os resultados obtidos pode-se ressaltar que o bagaço do pedúnculo do caju seco possui 21,45% de celulose, 10,96% de hemicelulose e 35,39% de lignina. Durante a fermentação, a C. guilliermondii CCT-3544 foi capaz de crescer no meio com hidrolisado sendo sua concentração máxima de crescimento celular (3,5 g L-1). O comportamento dos açúcares no processo fermentativo foi similar nas diferentes variáveis com produção máxima de etanol e xilitol em 48 h de fermentação. |
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ISSN: | 1415-4366 1807-1929 1415-4366 |
DOI: | 10.1590/1807-1929/agriambi.v21n7p488-492 |