https://jopr.mpob.gov.my Wed, 17 Nov 2021 06:01:05 +0000 en-US hourly 1 https://wordpress.org/?v=7.0 https://jopr.mpob.gov.my/solid-state-characteristics-of-microcrystalline-cellulos-from-oil-palm-empty-fruit-bunch-fibre/ Sat, 13 Nov 2021 15:29:19 +0000 https://jopr.mpob.gov.my/V2/?p=9288 Oil palm empty fruit bunches (EFB) are one of the by-products generated from palm oil mills. They consist mainly of lignocellulosic compounds, namely cellulose, hemicellulose and lignin. Cellulose, in particular, constitutes about 37% (dry weight) of the EFB, and is a compound with high value and can be exploited for the benefit of the palm oil industry.
In this study, an attempt to prepare microcrystalline cellulose (MCC) from the isolated EFB-cellulose was carried out. The MCC was prepared by controlled acid hydrolysis of the isolated a-cellulose which attacked the amorphous region, and was followed by the back neutralization process with alkali. The structural properties of the cellulose and MCC were studied by Fourier Transformed Infra-red Spectrometry (FTIR) and X-ray diffraction methods. The FTIR spectrum of MCC from EFB was identical to that of the commercial MCC as well as the cellulose which showed comparable presence of C-O-C, C-C, O-H, and C-H bands. However, a broad peak at 3329 cm^-1 was observed from the EFB-cellulose due to absorption vibration of the hydroxyl groups. The X-ray diffraction pattern revealed a low degree of order for EFB-cellulose and a relatively ordered structure for EFB-MCC. Two peaks of diffraction angles ranging between 19º and 23º were observed in the EFB-MCC, indicating the presence of a small percentage of cellulose II. The commercial MCC had a highly ordered structure compared to EFB-MCC as indicated by the presence of a single peak at 22.5º.

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