Parametric study on fermentation of cellulose and mannitol from macroalagae (Sargassum sp.) for bioethanol production

Date

4-2013

Degree

Bachelor of Science in Chemical Engineering

College

College of Engineering and Agro-Industrial Technology (CEAT)

Adviser/Committee Chair

Rex B. Demafelis

Restrictions

Restricted: Not available to the general public. Access is available only after consultation with author/thesis adviser and only to those bound by the confidentiality agreement.

Abstract

The effects of incubation temperature, pH and substrate concentration ratio on the fermentation of mixed cellulose hydrolysate and mannitol from Sargassum species using Saccharomyces cerevisiae 2055 were studied. It was found that the most favorable condition for fermentation was at 30°C, pH 4.5 and 2:1 glucose from cellulose to mannitol ratio. The ethanol concentration at this condition was 0.1288 mg/ml (0.01651 %v/v). The fermentation efficiency was determined to be 84.23%. Fermentation of pure mannitol and glucose from cellulose was also performed at the determined best temperature and pH condition. The ethanol yield was 0.3161 mg/mg and 0.5976 mg/mg for mannitol and glucose from cellulose, respectively. Higher content of ethanol production in the fermentation was evident when the substrate had more glucose compared to mannitol.

Language

English

Location

UPLB Main Library Special Collections Section (USCS)

Call Number

LG 993.5 2013 E62 A57

Document Type

Thesis

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