Changes in Phenol Level and Antioxidant Activity of Cocoa Beans During Fermentation and Roasting

Sabahannur, St (2018) Changes in Phenol Level and Antioxidant Activity of Cocoa Beans During Fermentation and Roasting. Journal of Food Research, 7 (4). pp. 23-29. ISSN 1927-0895

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Abstract

Flavonoid polyphenol s , especially catechin and epicatechin ,are major component s in cocoa products , which are known for antioxidant properties . C ocoa bean requires fermentation process in order to obtain good taste. During the fermentation process, polyphenol s are oxidized by polyphenol oxidase to form quinone and 2 q uinon . The purpose of the research is to determine the total level of polyphenol and antioxidant activity of fermented and roasted cocoa beans . The experiment was using Completely Randomized Design (CRD) with fermentation treatment that includes : Without f ermentation, three day fermentation and five day fermentation. Observation parameters include: Polyphenol level and antioxidant activity with DPPH method. The results showed that the total phenol level of cocoa bean changed during fermentation and after ro asting. The highest phenol level was found in cocoa beans without fermentation, and there is a decrease of phenol level to 98% after fermentation and roasting. The fermentation affects the Inhibition Concentration (IC 50 ) of cocoa beans. An unfermented bean showed a very strongly active antioxidant activity with IC 50 of 7.848 ppm , whereas three day fermentation showed a strong antioxidant activity with IC 50 of 35.961 ppm, and five day fermentation is moderately active with IC 50 of 55.976 ppm Keywords: c ocoa beans, fermentation, poliphenol, antioxidant activity, DPPH

Item Type:	Article
Subjects:	S Agriculture > S Agriculture (General)
Divisions:	FAKULTAS PERTANIAN > AGROBISNIS
Depositing User:	Unnamed user with email admin@umi.ac.id
Date Deposited:	11 Jul 2023 05:28
Last Modified:	11 Jul 2023 05:28
URI:	http://repository.umi.ac.id/id/eprint/3153

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