Elias, N. and Chandren, S. and Attan, N. and Mahat, N. A. and Razak, F. I. A. and Jamalis, J. and Wahab, R.A. (2017) Structure and properties of oil palm-based nanocellulose reinforced chitosan nanocomposite for efficient synthesis of butyl butyrate. Carbohydrate Polymers, 176 . pp. 281-292. ISSN 0144-8617
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Abstract
In this study, nanocellulose (NC) was successfully extracted from oil palm frond leaves (OPFL) using a combination of bleaching, alkaline treatment and acid hydrolysis. X-ray diffractogram revealed the extracted NC was crystalline with a crystallinity index of 70.2%. This indicates its suitability as nano-fillers for preparing the chitosan/nanocellulose (CS-NC) supports to immobilize Candida rugosa lipase (CRL) to produce the CRL/CS-NC biocatalysts. FTIR, FESEM and TGA characterizations of the CRL/CS-NC confirm the CRLs were successfully conjugated to the CS-NC supports. The air-dried CS-NC supports gave satisfactory immobilization of the CRLs (5.2 mg/g) with the resultant CRL/CS-NCs catalysed conversions of ≥80% of butyl butyrate within 6 h. Time course reaction profile revealed that 76.3% butyl butyrate conversion was achieved at 4 h immobilization time using 3 mg/mL of CRL/CS-NCs. NMR analyses on the purified butyl butyrate confirmed that the ester was successfully synthesized.
Item Type: | Article |
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Uncontrolled Keywords: | Butyl butyrate, Candida rugosa lipase, Chitosan, Nanocellulose, Oil palm biomass |
Subjects: | Q Science > QD Chemistry |
Divisions: | Science |
ID Code: | 75469 |
Deposited By: | Widya Wahid |
Deposited On: | 22 Mar 2018 11:12 |
Last Modified: | 22 Mar 2018 11:12 |
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