Effect of Guava Powder Addition on Epigallocatechin Gallate (EGCG) Content of Green Tea and Its Antioxidant Activity

Jurnal Farmasi dan Ilmu Kefarmasian Indonesia

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Title Effect of Guava Powder Addition on Epigallocatechin Gallate (EGCG) Content of Green Tea and Its Antioxidant Activity
 
Creator Rabbani, Hanifah Ridha
Purwanto, Djoko Agus
Isnaeni, Isnaeni
 
Subject
green tea, Camellia sinensis, guava, epigallocatechin gallate (EGCG), antioxidant activity
 
Description Background: Tea (Camelia sinensis) contains polyphenols including epigallocatechin gallate (EGCG) which is acknowledged to have strong antioxidant properties. However, its stability is strongly influenced by environment. In a neutral and alkaline environment, EGCG could undergo degradation and lose its antioxidant property. There are some researches about the effect of combination of green tea and other plants to their antioxidant capacity. Objective: The research aimed to investigate the effect of guava addition to EGCG content of green tea and their antioxidant activity. Methods: The concentration of EGCG was determined by chromatographic analysis using TLC scanner, meanwhile the antioxidant activity was evaluated by its ability in scavenging 2,2-diphenyl-1-picrylhydrazyl (DPPH) using UV-Vis Spectrophotometer. Results: Among all the samples, formula 4 (2 parts of green tea and 3 parts of guava) gave the highest EGCG content (39.03 ± 3.65 mg/g). This was 37.5% higher than the control sample (28.39 ± 2.45 mg/g). Formula 4 also had the best antioxidant activity with IC50 of 1917.32±1.75 ppm, 19% lower than control sample (2356.46 ± 3.16 ppm). Conclusion: The addition of guava powder significantly increased the amount of EGCG in green tea extracts and their antioxidant activity.
 
Publisher Fakultas Farmasi Universitas Airlangga
 
Contributor
 
Date 2020-03-04
 
Type info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
 
Format application/pdf
 
Identifier https://e-journal.unair.ac.id/JFIKI/article/view/16572
10.20473/jfiki.v6i22019.85-90
 
Source JURNAL FARMASI DAN ILMU KEFARMASIAN INDONESIA; Vol 6, No 2 (2019): JURNAL FARMASI DAN ILMU KEFARMASIAN INDONESIA; 85-90
2580-8303
2406-9388
 
Language eng
 
Relation https://e-journal.unair.ac.id/JFIKI/article/view/16572/9835
https://e-journal.unair.ac.id/JFIKI/article/downloadSuppFile/16572/4026
 
Rights Copyright (c) 2020 JURNAL FARMASI DAN ILMU KEFARMASIAN INDONESIA
http://creativecommons.org/licenses/by-nc-sa/4.0
 

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