GALLIC ACID: A PHENOLIC ACID AND ITS ANTIOXIDANT ACTIVITY FROM STEM BARK OF CHLOROFORM EXTRACTS OF SYZYGIUM LITORALE (BLUME) AMSHOFF (MYRTACEAE)

Tukiran Tukiran (Department of Chemistry, Faculty Mathematics and Natural Sciences, Universitas Negeri Surabaya, Jl. Ketintang, East Java, Indonesia)
Fitriyatul Mahmudah
Nurul Hidayati
Kuniyoshi Shimizu (Department of Forests and Forest Products Sciences, Faculty of Agriculture, Kyushu University, Fukuoka 812 – 8581, Japan)

Molekul: Jurnal Ilmiah Kimia
Vol 11, No 2 (2016)

A phenolic acid had been isolated from chloroform soluble fractions of a methanol extract of stem bark of Syzygium litorale, Fam. Myrtaceae. The structure of the isolated compound was elucidated and established as gallic acid through extensive spectroscopic studies (UV-Vis, FTIR, and NMR) and by comparison with literature data and authentic sample. This is the first report of the isolation of compound from this plant, although it has previously been found in Myrtaceae family such as S. aromaticum, S. cumini, S. polyanthum, S. cordatum, etc. The chloroform fraction, isolated compound, and vitamin C showed very strong antioxidant activity against 2,2-diphenyl-1-picrylhydrazyl (DPPH) with IC50 value of 23.2, 7.5, and 12.5 mg/mL, respectively.