Extraction of microcrystalline cellulose (MCC) from cocoa pod husk via alkaline pretreatment combined with ultrasonication

Zailani, I.S.A and Aviceena, Aviceena and Jimat, Dzun Noraini and Jami, Mohammed Saedi (2016) Extraction of microcrystalline cellulose (MCC) from cocoa pod husk via alkaline pretreatment combined with ultrasonication. International Journal of Applied Engineering Research, 11 (19). pp. 9876-9879. ISSN 0973-4562 E-ISSN 0973-9769

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Abstract

The aim of this study was to extract microcrystalline cellulose (MCC) from cocoa pod husk (Theobroma cacao L.) via alkaline treatment and ultrasonication. The sieved cocoa pod husk (CPH) was treated with 2% w/v sodium hydroxide (NaOH) for 5h at 800C in a water bath. Then, it was bleached by aqueous dilution of hydrogen peroxide at 75oC followed by treating with 12% w/v NaOH at 80oC for 1h. Ultrasonication was conducted after completion of alkaline treatment to isolate fibrils aggregates form MCC. Response surface methodology (RSM) using Design expert @version 8.0 was used to determine the optimum condition of ultrasonication by varying its ultrasonication time and cycle with particle size of MCC as response. Analysis of variance (ANOVA) of this study showed that both parameters significantly affect the particle size of MCC. The optimized condition postulated from the RSM are 60 s of sonication time with 2 cycles. It was found that the smallest particle size of samples was 286 nm. Results from scanning electron microscope images showed that the surface structure of the solid CPH differed over the stage of the whole processes.

Item Type:	Article (Journal)
Additional Information:	3891/52817
Uncontrolled Keywords:	microcrystalline cellulose (MCC), cocoa pod husk, alkaline treatment and ultrasonication
Subjects:	T Technology > TP Chemical technology > TP155 Chemical engineering
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Engineering > Department of Biotechnology Engineering
Depositing User:	Prof. Ir. Dr. Mohammed Saedi Jami, PhD CEng MIChemE
Date Deposited:	09 Nov 2016 10:05
Last Modified:	02 Jun 2017 13:52
URI:	http://irep.iium.edu.my/id/eprint/52817

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