Bacterial resistance is a serious problem that until now still has become a global problem. The search for new antibacterial compounds is needed to overcome this problem. Syzygium cumini (L.) Skeels is a plant known to contain bioactive compounds that can be used as an antibacterial agent. This study aims to explore the leaves of this plant as an antibacterial against Escherichia coli pBR322 resistant bacteria. Based on the antibacterial test results, extracts and leaf fractions of this plant can inhibit bacterial growth. Ethyl acetate fraction at a concentration of 800 ppm showed strong antibacterial activity with an inhibition zone diameter of 10.36±0.02 mm followed by ethanol extract and other fractions, namely 8.43±0.01 mm (ethanol extract), 7.24±0.01 mm (water fraction), and 1.45±0.01 mm (n-hexane fraction). The results of spectrophotometric MIC determination also showed inhibition against bacterial growth, which was marked by a decrease in the absorbance value at the lowest antibacterial concentration of 600 ppm from 0.454 to 0.070 at wavenumber 600 nm after 24 hours of incubation. The decrease in the absorbance value indicated that the antibacterial properties of the plant leaves at this concentration were effective in inhibiting bacterial growth.
Pendidikan yang baik adalah pendidikan yang dapat meningkatkan daya literasi, daya belajar, inovasi dan kreatifitas siswa. Salah satu cara dalam penyampaian proses belajar mengajar yang lebih optimal adalah dengan penyiapan media belajar yang menarik. Media belajar dapat dilakukan dengan pertunjukkan permaianan sains. Kegiatan pengabdian ini dilaksanakan di SMP Negeri II Koko dengan dihadiri siswa/I kelas VII, VIII, dan IX. Materi pengabdian berupa permainan sains berupa Pesan rahasia, Magnet listrik, Peristiwa melayang tenggelam dan terapung, Gunung meletus dan Listrik buah. Kegiatan permainan atau demonstrasi sains ini dilakukan untuk memperkenalkan kepada siswa-siswi pembelajaran sains yang lebih menarik. Kegiatan ini dilaksanakan dengan metode pertunjukkan, ceramah dan diskusi. Dapat disimpulkan bahwa siswa – siswi berinteraksi secara aktif, tidak kaku, penuh semangat ditandai dengan banyaknya pertanyaan yang muncul, dan siswa sangat antusias dalam menjawab pertanyaan yang diberikan oleh tim pengabdi serta tingginya minat siswa untuk terlibat di dalam praktik demonstrasi sains.
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