DOI: https://doi.org/10.14710/reaktor.19.2.49-53

The Impact of Combination of Ozonation and Ultrasonication Process on Morphological and Chemical Properties of κ-Carrageenan

*Nurfiningsih Nurfiningsih  -  Department of Chemical Engineering, Faculty of Engineering, Universitas Diponegoro, Indonesia
Ratnawati Ratnawati  -  Department of Chemical Engineering, Faculty of Engineering, Universitas Diponegoro, Indonesia
Aji Prasetyaningrum  -  Department of Chemical Engineering, Faculty of Engineering, Universitas Diponegoro, Indonesia
Received: 8 May 2019; Published: 11 Aug 2019.
Open Access Copyright (c) 2019 Reaktor under http://creativecommons.org/licenses/by-nc-sa/4.0.

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Abstract

Carrageenan application in the biomedical field is influenced by the size of molecular weight. Depolymerization process is needed for changing the high molecular weight (HMW) fraction of κ- carrageenan into low molecular weight fraction (LMW) of κ- carrageenan. Ozone is a powerful oxidant and considered for depolymerization of κ- carrageenan. This research was conducted as an investigation on the influence of the combination of ozonation and ultrasonication (OZ/US) on the chemical and morphological characteristics of κ-carrageenan. FTIR and Scanning electron microscopy (SEM) was used to determine the change of chemical and morphological characteristics of κ-carrageenan. The result of this study showed that there was no change of chemical properties of κ-carrageenan during OZ/US treatment. The sulfate content was obtained after OZ/US treatment tends to be stable.  Nevertheless, the result of SEM analysis showed that there were changes on morphological characteristics of κ-carrageenan after OZ/US treatment.

 

Keywords: ultrasonication, κ-carrageenan, ozonation, morphological, chemical

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Section: Research Article
Language : EN
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