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Use of Gelidium amansii as a promising resource for bioethanol: A practical approach for continuous dilute-acid hydrolysis and fermentation

2011; Elsevier BV; Volume: 108; Linguagem: Inglês

10.1016/j.biortech.2011.12.065

1873-2976

Jeong‐Hoon Park, Ji-Yeon Hong, Hyun Chul Jang, Seung Geun Oh, Sang–Hyoun Kim, Jeong‐Jun Yoon, Yong Jin Kim,

Freezing and Crystallization Processes

A facile continuous method for dilute-acid hydrolysis of the representative red seaweed species, Gelidium amansii was developed and its hydrolysate was subsequently evaluated for fermentability. In the hydrolysis step, the hydrolysates obtained from a batch reactor and a continuous reactor were systematically compared based on fermentable sugar yield and inhibitor formation. There are many advantages to the continuous hydrolysis process. For example, the low melting point of the agar component in G. amansii facilitates improved raw material fluidity in the continuous reactor. In addition, the hydrolysate obtained from the continuous process delivered a high sugar and low inhibitor concentration, thereby leading to both high yield and high final ethanol titer in the fermentation process.