Effect of Rhizopus Oryzae Fermentation on Kenaf-based Polylactic Acid’s Monomer

Mohd Nasir, Nur Aimi and Mustafa Kamalbahrin, Mohd Adlan and Mohamed, Nurhafizah Seeni and Anuar, Hazleen and Mel, Maizirwan and Othman, Rashidi (2011) Effect of Rhizopus Oryzae Fermentation on Kenaf-based Polylactic Acid’s Monomer. IIUM Engineering Journal, 12 (4). pp. 83-87. ISSN 1511-788X

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Abstract

Kenaf biomass is the potential as raw materials used to produce polylactic acid’s monomer which is lactic acid via fermentation by Rhizopus oryzae. Kenaf biomass’ structure is complex due to its lignin and cellulose content. This matter had encouraged it to undergo pre- treatment process as the initial step before fermentation process can be done. In this paper, kenaf biomass was treated with dilute sulphuric acid (H2SO4) to hydrolyze the cellulose content in it as well as to convert the cellulose into glucose- a carbon source for Rhizopus to grow. Then, the fermentation process was carried out in shake flask for 3 days at pH 6. Several conditions for fermentation process had been chosen which were 25oC at 150 rpm, 25 oC at 200 rpm, 37 oC at 150 rpm and 37oC at 200 rpm. In this fermentation process, 0.471 g/L, 0.428 g/L, 0.444 g/L and 0.38 g/L of lactic acid was produced respectively. Sample at 25oC at 200 rpm produced maximum amount of lactic acid compared to others.

Item Type:	Article (Journal)
Additional Information:	4130/13945
Uncontrolled Keywords:	kenaf biomass; pre-treatment; lactic acid; Rhizopus oryzae; fermentation
Subjects:	T Technology > TP Chemical technology > TP155 Chemical engineering T Technology > TP Chemical technology > TP248.13 Biotechnology
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Architecture and Environmental Design Kulliyyah of Engineering > Department of Biotechnology Engineering Kulliyyah of Engineering > Department of Manufacturing and Materials Engineering
Depositing User:	Dr Maizirwan Mel
Date Deposited:	04 Jan 2012 14:26
Last Modified:	24 Jul 2021 00:19
URI:	http://irep.iium.edu.my/id/eprint/13945

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