EVALUASI DAN IDENTIFIKASI GOLONGAN SENYAWA POTENSIAL ANTIBAKTERI PADA DAUN DAN KULIT BATANG MIMBA  (Azhadirachta indica A. Juss) TERHADAP Escherichia coli

Arif Setiawansyah; Aliefman Hakim; Dyke Gita Wirasisya

doi:10.22435/jtoi.v11i2.1003

Arif Setiawansyah Universitas Mataram https://orcid.org/0000-0002-1443-8666
Aliefman Hakim Universitas Mataram
Dyke Gita Wirasisya Universitas Mataram

DOI: https://doi.org/10.22435/jtoi.v11i2.1003

Keywords: Antibakteri, Minyak Daun, Daun dan Kulit Batang, Azadirachta indica A. Juss., KLT-Bioautografi, Analisis GC-MS

Abstract

ABSTRACT

Neem (Azadirachta indica A.Juss) is a plant that potentially developed for antibacterial agent for both the leaves and barks. The aims of this study were to compare the effectiveness of the antibacterial activity of neem leav es and stem barks extract and to identify the antibacterial compounds of the most active fractions. The extraction method was done using sonication method. Antibacterial activity was evaluated using wells solid diffusion method and TLC-Bioautography. Extract fractionation was conducted using liquid-liquid partitioning method. The chemical compounds of extracts and fractions were analyzed using TLC and GCMS. The result of sonication extraction obtained neem leaves oil (12,02%), leaves crude extract (4,3%) and stem barks crude extract (16,85%). The major chemical constituents of GCMS analysis are 2,3-Dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one (6,06%), L-proline,1-Acetyl-(CAS) Acetylproline (5,85%), 4-hydroxy-2-methyl-pyrrolidine-2-carboxylic acid (21,42%), 2,3-Dyhidrobenzofuran (2,69%), alpha-D-methylglucopyranoside (4,54%), palmitic acid (2,92%), Arabino-hex-1-enitol, 1,5-Anhydro-2-deoxy-(CAS) glucal (31,69%). Phytochemical screening of neem leaves oil, leaves and barks crude extract revealed the presence of alkaloids, flavonoids, phenols, saponins, triterpenoids, steroids and sterols. Antibacterial test results showed neem leaves oil was more effective than leaves and stem barks crude extract against Escherichia coli. The n-hexane fraction showed higher antibacterial activity than ethyl acetate fraction and ethanol fraction. Phytochemical screening of n-hexane fraction showed the presence of triterpenoids, steroids, sterols and phenols.

Mimba (Azadirachta indica A.Juss) merupakan tanaman yang berpotensi dikembangkan sebagai antibakteri baik bagian daun maupun kulit batang. Penelitian ini bertujuan untuk membandingkan efektivitas antibakteri ekstrak daun dan kulit batang mimba terhadap Escherichia coli dan untuk mengidentifikasi golongan senyawa potensial antibakteri pada fraksi teraktif. Pengujian aktivitas antibakteri dilakukan dengan metode difusi padat menggunakan sumuran dan KLT-Bioautografi. Fraksinasi ekstrak dilakukan dengan metode partisi. Komponen kimia ekstrak dan fraksi dianalisis menggunakan KLT dan GCMS. Hasil ekstraksi sonikasi diperoleh minyak daun (12,02%), ekstrak kasar daun (4,3%) dan ekstrak kasar kulit batang (16,85%). Skrining fitokimia menunjukkan minyak daun, ekstrak kasar daun dan ekstrak kulit batang mimba mengandung senyawa alkaloid, flavonoid, fenolik, saponin, triterpenoid, steroid dan sterol. Komponen kimia mayor hasil analisis GCMS minyak daun mimba adalah 2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one (6,06%), L-proline,1-Acetyl-(CAS)Acetylproline (5,85%), 4-hydroxy-2-methyl-pyrrolidine-2-carboxylic acid (21,42%), 2,3-dyhidrobenzofuran (2,69%), Alpha-d-methylglucopyranoside (4,54%), Asam Palmitat (2,92%), Arabino-hex-1-enitol, 1,5-anhydro-2-deoxy-(CAS)glucal (31,69%). Hasil uji antibakteri menunjukkan minyak daun lebih efektif menghambat pertumbuhan Escherichia coli dibandingkan dengan ekstrak kasar daun dan kulit batang. Fraksi n-heksan menunjukkan aktivitas antibakteri paling besar dibandingkan dengan fraksi etil asetat dan etanol. Hasil skrining fitokimia fraksi n-heksan menunjukkan adanya senyawa triterpenoid, steroid, sterol dan fenolik.

Author Biographies

Arif Setiawansyah, Universitas Mataram

Program Studi Farmasi, Fakultas Kedokteran, Universitas Mataram

Aliefman Hakim, Universitas Mataram

Dosen Program Studi Pendidikan Kimia, FKIP, Universitas Mataram

Dyke Gita Wirasisya, Universitas Mataram

Dosen, Program Studi Farmasi, Fakultas Kedokteran, Universitas Mataram

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