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Mixtures of S. Rebaudiana Leaves and Stems Waste for Steviosides Synthesis Using Ethanol-Water Solvents

Said, N. and Zulkarnain, Jema'at and Nurfariha Fathmi, Zakaria and Siti Farhana, Haron and N. S., Ghazali and Fatimah A., Misebah (2014) Mixtures of S. Rebaudiana Leaves and Stems Waste for Steviosides Synthesis Using Ethanol-Water Solvents. Journal of Engineering and Technology, 5 (2). pp. 51-62. ISSN 2180-3811

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Abstract

Mixtures of S.rebaudiana leaves and stems waste were applied for steviosides synthesis. The various ethanol-water as polarity solvents were employed in the ultrasound-assisted extraction (UAE). The HPLC (High Performance Liquid Chromatography) with Eurospher 100–5NH2 column at 1mL/m3 were used for steviosides analysis. The maximum yields were achieved by the time of 30 min., temperature of 40oC and ethanol-water ratio of 80:20 (v/v). The second order kinetics model best fits the obtained data with R2 and k of 0.992 and 0.02 min-1. Utilization of wastes as an alternative feed stock provides a cost-effective and environmental friendly way for steviosides extraction.More extensive investigation needs to be performed to compare the various advantageous processing and technical feasibilty.

Item Type: Article
Uncontrolled Keywords: S.rebaudiana; Steviosides; Polarity solvents; Kinetics and UAE
Subjects: T Technology > TP Chemical technology
Faculty/Division: Faculty of Chemical & Natural Resources Engineering
Depositing User: Mrs. Neng Sury Sulaiman
Date Deposited: 24 Apr 2015 07:53
Last Modified: 21 May 2018 07:34
URI: http://umpir.ump.edu.my/id/eprint/9071
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