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All Journal Biota: Jurnal Ilmiah Ilmu-Ilmu Hayati
Boy R. Sidharta
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology

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Skrining Senyawa Antibakteri dari Beberapa Jenis Rumput Laut Coklat (Phaeophyceae) dari Pantai Drini, Daerah Istimewa Yogyakarta Boy R. Sidharta; P. Kianto Atmodjo; E. Mursyanti
Biota : Jurnal Ilmiah Ilmu-Ilmu Hayati Vol 13, No 1 (2008): February 2008
Publisher : Universitas Atma Jaya Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24002/biota.v13i1.2614

Abstract

This present research was trying to determine the antibacterial compounds from several brown seaweeds from Drini beach. Previous studies have shown that several seaweeds from this beach were proved to have antibacterial activities. Therefore, it needs to be studied whether the extracts of several brown seaweeds utilizing three (3) kinds of extraction solutions such as aquadest, ethanol, and hexane, will also show antibacterial activities. The three solutions were chosen based on the difference of polarization activities. Research design utilized was randomized complete block design and the data compiled was treated by Anova and followed with Duncan’s Multiple Range Test (DMRT) with degree of confidence 95%. Microbes utilized in this research were Escherichia coli and Bacillus subtilis, that were common pathogenic bacteria known to human and animals. The research found six (6) species of brown seaweed during the research period, i.e. Sargassum dotyi, S. ohnoi, S. abbottiae, S. bataanense, Caulerpa prolifera, and Laurencia papillosa. This present research also revealed that ethanol was the best extraction solution to extract the secondary metabolite from the brown seaweeds found. The best antibacterial activities was shown by S. dotyi extract’s to inhibit the two (2) microbes used in the research compared to other seaweed extracts. However, this result was still low and significantly different compare to pure antibiotics utilized, i.e. penicillin and streptomycin.
Keragaman Jenis Opisthobranchia di Taman Laut 17 Pulau Riung, Nusa Tenggara Timur Maria M. Ngole; Pantang K Oliva; Felicia Zahida; Boy R. Sidharta
Biota : Jurnal Ilmiah Ilmu-Ilmu Hayati Vol 10, No 1 (2005): February 2005
Publisher : Universitas Atma Jaya Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24002/biota.v10i1.2807

Abstract

Penelitian inventarisasi jenis Opisthobranchia telah dilakukan untuk menunjang ekowisata di daerah Taman Laut 17 Pulau Riung. Taman laut ini terletak di kecamatan Riung, Kabupaten Ngada, Flores, Nusa Tenggara Timur. Kawasan ini di sebelah barat dibatasi oleh kabupaten Manggarai dan disebelah timur oleh desa Nggolonio, di utara dibatasi dengan laut Flores dan di selatan oleh Desa Wangka, Alo Mamek, dan Ten Terong. Areanya meliputi lima buah desa yaitu desa Lengkosambi, Tadho, Benteng Tengah, Nangamese dan Sambinasi. Secara geografis terletak antara 8o20’30” – 8o28’30” LS hingga 90o55’30” – 90o09’00” BT. Luas daratan sekitar 5 ha dan terumbu karang seluas 7.500 ha (Anonim a dan b. 1993). Opisthobranchia amat disukai oleh penyelam dan penggemar fotografi bawah laut dari mancanegara, namun masih amat sedikit penelitiannya di Indonesia
Co-Authors E. Mursyanti Felicia Zahida Maria M. Ngole P. Kianto Atmodjo Pantang K Oliva