Produção de etanol a partir de torta de mamona (Ricinus communis L.) e avaliação da letalidade da torta hidrolisada para camundongos

Química Nova

Walber Carvalho Melo²  Daniele Barreto Da Silva²  Nei Pereira Jr.²  Lídia Maria Melo Santa Anna¹  Alexandre Soares Dos Santos¹ 

[1] ,Universidade Federal do Rio de Janeiro Departamento de Engenharia Bioquímica Rio de Janeiro RJ ,Brasil

关键词: castor bean cake;    acid hydrolysis;    ethanol;   

DOI  :  10.1590/S0100-40422008000500031

来源: SciELO

【 摘 要 】

The castor bean cake is rich in starch (48 ± 0.53%) and bears a problem linked to the occurrence of a toxic protein (ricin). The chemical hydrolysis (ratio solid:liquid = 1:6; H2SO4= 0.1 mol L-1; 120 °C; 40 min) generated a medium with 27 g L-1 of reducing sugars (hydrolysis efficiency= 32%). The hydrolyzed product was fermented and produced 11 g L-1 of ethanol (volumetric productivity=1.38 g L-1 h-1 and ethanol yield on substrate consumed=0.45 g g-1). In vivo experiments (DL50) revealed a reduction of roughly 240 times in the CBC toxicity (2.11 µg g-1).

【 授权许可】

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