Hessami, M. J. and Salleh, A. and Phang, S. M. (2020) Bioethanol a by-product of agar and carrageenan production industry from the tropical red seaweeds, Gracilaria manilaensis and Kappaphycus alvarezii. Iranian Journal of Fisheries Sciences, 19 (2). pp. 942-960. ISSN 1562-2916, DOI https://doi.org/10.22092/ijfs.2018.117104.
Full text not available from this repository.Abstract
The two red seaweeds, Gracilaria manilaensis and Kappaphycus alvarezii are cultivated in Malaysia for producing agar and carrageenan, respectively. The residues of these seaweeds after removing agar and carrageenan by dilute acid treatment were subjected to enzymatic hydrolysis using cellulase (Cellic CTec 2). In the optimization of enzymatic hydrolysis, highest glucose concentration was achieved in the sample with liquid: residue ratio of 7.5:1 and enzyme loading of 10 % w w(-1) residue. The resulting glucose was converted to bioethanol using Saccharomyces cerevisiae where bioethanol yields from G. manilaensis and K. alvarezii were 56.26 +/- 1.10 g L-1 and 51.10 +/- 1.21 g L-1 , respectively, which corresponded to 91 % and 95 % of the theoretical yield. The results of this study indicate that the residues of these seaweeds can be efficiently converted to bioethanol and besides environmental benefits, additional profit can be achieved in the phycocolloid industry.
| Item Type: | Article |
|---|---|
| Funders: | Universiti Malaya (PV026-2012A), Universiti Malaya (RP001O13SUS), Ministry of Energy, Science, Technology, Environment and Climate Change (MESTECC), Malaysia (04-01-03-SF0668), Department of Fisheries Malaysia (53-02-03-1061) |
| Uncontrolled Keywords: | Bioethanol; Cellulase; Agar residues; Gracilaria manilaensis; Kappaphycus alvarezii |
| Subjects: | Q Science > Q Science (General) Q Science > QH Natural history > QH301 Biology |
| Divisions: | Faculty of Science > Institute of Biological Sciences Deputy Vice Chancellor (Research & Innovation) Office > Institute of Ocean and Earth Sciences |
| Depositing User: | Ms Zaharah Ramly |
| Date Deposited: | 14 Jun 2023 01:36 |
| Last Modified: | 14 Jun 2023 01:36 |
| URI: | http://eprints.um.edu.my/id/eprint/37028 |
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