ANTIOXIDANT ACTIVITIES OF ARABICA GREEN COFFEE FROM THREE REGIONS USING ABTS AND DPPH ASSAYS

  • Irda Fidrianny School of Pharmacy Bandung Institute of Technology
  • Annisa, .
  • Komar Ruslan

Abstract

ABSTRACT
Objectives: The aim of this research were to determine antioxidant activity from various extracts of arabica green coffee from three different regions
using two methods of antioxidant testing which were 2,2'-azino-bis (3-ethylbenzthiazoline-6-sulfonic acid) (ABTS) and 2,2-diphenyl-1-picrylhydrazyl
(DPPH) and correlation of total phenolic, flavonoid, and carotenoid content in various extracts of arabica coffee with their IC50 of ABTS and IC50 of
DPPH antioxidant activities.
Methods: Extraction was conducted by reflux using various polarity solvents. The extracts were evaporated using rotary evaporator. Antioxidant
activities using ABTS and DPPH assays, determination of total phenolic, flavonoid, and carotenoid content were performed by UV-visible
spectrophotometry and its correlation with IC50 of ABTS and IC50 of DPPH scavenging activities were analyzed by Pearson's method.
Results: The lowest IC50 of ABTS scavenging activity 3.47 µg/ml was given by n-hexane extract of Toraja arabica coffee, while ethanolic extract of
Lintong arabica coffee gave the lowest IC50 of DPPH scavenging activity 0.7 µg/ml. Ethanolic extract of Madailing arabica coffee gave the highest
phenolic content, and its ethyl acetate extract had the highest total flavonoid. There were negative and high correlation between phenolic content and
carotenoid content in Lintong arabica coffee extract with their IC50 of DPPH.
Conclusions: All of the arabica green coffee extracts from three regions except LIN1 by ABTS method were categorized as a very strong antioxidant and
except TOR1 for DPPH method. Phenolic and carotenoid compounds in Lintong arabica coffee extracts were the major contributor in IC50 of DPPH
scavenging activities. Arabica coffee extracts from Lintong showed the linear result in ABTS and DPPH assays.
Keywords: Antioxidant, 2,2'-azino-bis (3-ethylbenzthiazoline-6-sulfonic acid), 2,2-diphenyl-1-picrylhydrazyl, Arabica green coffee, Phenolic,
Flavonoid, Carotenoid.

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How to Cite
Fidrianny, I., A. ., and K. Ruslan. “ANTIOXIDANT ACTIVITIES OF ARABICA GREEN COFFEE FROM THREE REGIONS USING ABTS AND DPPH ASSAYS”. Asian Journal of Pharmaceutical and Clinical Research, Vol. 9, no. 2, Mar. 2016, pp. 189-93, https://innovareacademics.in/journals/index.php/ajpcr/article/view/10362.
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