Extraction of coffee silverskin to convert waste into a source of antioxidant

Tangguh, Patrick and Kusumocahyo, Samuel P. (2017) Extraction of coffee silverskin to convert waste into a source of antioxidant. In: International Symposium on Applied Chemistry (ISAC) 2016. AIP Conf. Proc. 1803, 020029-1–020029-9;, 1803 (020029). American Institute of Physics Publishing, pp. 1-9. ISBN 9780735414716 (Submitted)

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Abstract

Coffee silverskin (CS) is a thin layer of coffee bean, and is regarded as a waste during coffee roasting process. In this work, coffee silverskin was extracted by three types of method: conventional extraction (CE) with agitation, conventional extraction (CE) without agitation and ultrasound-assisted extraction (UAE). The total phenolic content, the total flavonoid content and the antioxidant activity of the extract were analyzed. It was found that the type of extraction method, the extraction time and the extraction temperature strongly influenced the total phenolic content, the total flavonoid content and the antioxidant activity of the extract. Comparison between conventional extraction (CE) and ultrasoundassisted extraction (UAE) were statistically analyzed using 3-way ANOVA test. The optimum extraction time and temperature for each method were analyzed using 2-way ANOVA test. It was found that the optimum condition to obtain a high antioxidant activity of 68.9% was by using CE with agitation with the extraction time and temperature of 60 minutes and 60˚C, respectively.

Item Type: Book Section
Uncontrolled Keywords: Coffee Silverskin, Ultrasound-assisted extraction, Conventional extraction, Antioxidant Activity
Subjects: R Medicine > RS Pharmacy and materia medica > RS160 Plant extracts
T Technology > TP Chemical technology > TP155 Chemical engineering
T Technology > TP Chemical technology > TP157-TP159 Extractors (Chemical engineering)
T Technology > TP Chemical technology > TP645 Coffee -- Processing
Divisions: Faculty of Life Sciences and Technology > Department of Biomedical Engineering
Depositing User: Faisal Ifzaldi
Date Deposited: 18 Apr 2022 07:37
Last Modified: 31 Aug 2022 08:46
URI: http://repository.sgu.ac.id/id/eprint/2340

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