EXTRACTION OF PHENOLIC COMPOUNDS FROM GREEN TEA USING ETHANOL

Setyopratomo, Puguh (2014) EXTRACTION OF PHENOLIC COMPOUNDS FROM GREEN TEA USING ETHANOL. In: 1st International Conference on Engineering Science and Technology Innovation (ICESTI 2014), 10-13 September 2014, Bali Dinasty Resort, Kuta-Bali.

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Abstract

Ethanol was used as a solvent to extract phenolic compom1ds from dried fresh tea leaves (Camellia sinensis L. Kuntze). The extraction was performed at temperature of 40, 50, and 60°C which was maintained using a water bath. Folin-Ciocalteu's reagent was used to detennine the total phenolic content spectrophotometrically and gallic acid was used as the calibrant. The highest yield, which was 0.3347 g extract/g dry tea leaves, was obtained at extraction temperature 60°C and extraction time 240 minutes. 'While the lowest yield, which was 0.2807 g extract/g dry tea leaves, was obtained at temperature 40°C and 15 minutes extraction time.The value of total phenolic content obtained in this work is between 0.21-0.25 mg GAE/mg extract. The study also demonstrated that the extraction of tea leaves with ethanol at relatively low temperature exhibit considerable efficient method to obtain extract with relatively high total phenolic content.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: Ethanol, extraction, green tea, phenolic
Subjects: Q Science > QD Chemistry
Divisions: Faculty of Engineering > Department of Chemical Engineering
Depositing User: Ester Sri W. 196039
Date Deposited: 13 Nov 2018 08:01
Last Modified: 13 Nov 2018 08:01
URI: http://repository.ubaya.ac.id/id/eprint/33870

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