PHYTOCHEMICAL IDENTIFICATION AND ANTIOXIDANT ACTIVITY OF JUWET FRUIT (Syzygium cumini L. Skeels) ETHANOLIC EXTRACT

I Gede Putu Wirawan,I Ketut Suada,I Made Parama Nanda Mahatya

doi:10.24843/ijbb.2021.v08.i02.p05

I Gede Putu Wirawan, I Ketut Suada + Show 1 more

Open Access

https://doi.org/10.24843/ijbb.2021.v08.i02.p05

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Abstract

Juwet (Syzygium cumini L. Skeels) is one of Indonesia's local fruits which its existence is hard to find now. All parts of this plant can be used for many treatments, one of which is as an antioxidant. The purpose of this study was to determine the compounds contained in the fruit and to determine the antioxidant activity as well. Phytochemical analysis was performed using the gas chromatography while antioxidant activity tests were carried out quantitatively by DPPH method. The results showed that the juwet fruit was contained phenol 284.47 mg/100 g GAE, flavonoids 379.07 mg/100g, tannins 3888.67 mg/100 g TAE and anthocyanins 40.28 mg/100 g which consisted of 66 types of chemical compounds. The results of the antioxidant analysis showed that the ethanolic extract of juwet fruit could inhibit DPPH radicals with IC50 of 72,96 µg/ml.

Highlights

Indonesia is one of the countries that has the highest diversity of medicinal types in the world
This is due to the Indonesian territory is crossed by the equator and has a relatively stable climate which directly affects tropical forests biodiversity
At the retention time of 3.176 found carbonodithioic acid and S-ethyl 0-(1-methyl ethyl) ester which acting as an antioxidant (Lauderback et al, 2009), while at the retention time of 3.640 was methyl compound such as gamma-octalactone (Z and E) which acts as an antineoplastic agent and antibacterial agent (PubCham, 2020)

Summary

Introduction

Indonesia is one of the countries that has the highest diversity of medicinal types in the world. This is due to the Indonesian territory is crossed by the equator and has a relatively stable climate which directly affects tropical forests biodiversity. Indonesia's tropical forest areas has the second-highest biodiversity in the world after Brazil’s. Juwet fruit is tasted sour and has oval shape. There are several color types of mature juwet fruit, including black, red, and white. Bali’s juwet fruit is consumed freshly as salad. According to Swami et al (2012) juwet fruit can be used as traditional medicine for diabetes mellitus, anti-inflammation, and antidiarrhea

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