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All Journal HAYATI Journal of Biosciences Saintia Biologi Biota: Jurnal Ilmiah Ilmu-Ilmu Hayati agriTECH JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA BIOLINK (Jurnal Biologi Lingkungan, Industri, Kesehatan) Jurnal Penelitian Pendidikan IPA (JPPIPA) Abdimas Talenta : Jurnal Pengabdian Kepada Masyarakat Jurnal Pembelajaran dan Biologi Nukleus Jurnal Ilmiah Biologi UMA (JIBIOMA) Bioscientist : Jurnal Ilmiah Biologi
KIKI NURTJAHJA
Departemen Biologi, Fakultas Matematika Dan Ilmu Pengetahuan Alam, Universitas Sumatera Utara Jl. Bioteknologi No.1, Kampus USU, Medan, Indonesia 20155
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Earth & Planetary Sciences Education Environmental Science Immunology & microbiology Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Physics Social Sciences

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Journal : saintia biologi

 1 
PENGHAMBATAN PERTUMBUHAN Aspergillus flavus DAN Fusarium moniliforme OLEH EKSTRAK SALAM (Eugenia polyantha) DAN KUNYIT (Curcuma domestica) Ira Wulan Dani; Kiki Nurtjahja; Cut Fatimah Zuhra
Saintia Biologi Vol 1, No 1 (2012)
Publisher : Saintia Biologi

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Abstract

Growth inhibition of Aspergillus flavus and Fusarium moniliforme by leaf extract of salam (Eugenia polyantha) and turmeric (Curcuma domestica) was studied. Kirby-Bauer disc diffusion method was used in this experiment. The plant extracts used were 0, 5, 10, 15, 30, 40, 50, 60 and 70% and dimethyl sulfoxide (DMSO) as a solvent. The result showed that the E. polyantha and C. domestica have a different activity in inhibiting the growth of A. flavus. The leaf extract of turmeric showed lower activity inhibiting A. flavus and F. moniliforme than that of E.polyantha. In 5% E. polyantha inhibits the growth both of the fungus. While C. domestica showed activity inhibiting A. flavus in 5 % and F. moniliforme in 40 %.   Keywords: A. flavus, F. moniliforme, extract salam, turmeric
PENGHAMBATAN PERTUMBUHAN Aspergillus flavus DAN Fusarium moniliforme OLEH EKSTRAK SERUNI (Wedelia biflora) DAN KEMBANG BULAN (Tithonia diversifolia) Agnes Dame Sinta Uli; Kiki Nurtjahja; Cut Fatimah Zuhra
Saintia Biologi Vol 1, No 1 (2012)
Publisher : Saintia Biologi

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The growth inhibition of Aspergillus flavus and Fusarium moniliforme by extract of seruni (Wedelia biflora) and Kembang bulan (Tithonia diversifolia) has studied. Kirby-Bauer disc diffusion were used in this experiment. The leaf methanolic extracts prepared were 0, 5, 10, 15, 30, 40, 50, 60 and 70% with  dimethyl sulfoxide as the solvent. The results showed that extract of seruni and kembang bulan  has a different activity in inhibiting the growth of both fungus. Seruni  extract  showed lower activity in inhibiting A. flavus and F. moniliforme than kembang bulan. In 40% seruni  inhibits the growth both of the fungus. While kembang bulan showed activity in inhibiting A. flavus and F. moniliforme in 5%.   Kata kunci: A.  flavus, F.  moniliforme, T. diversifolia and  W. biflora exctract
PENGHAMBATAN SERANGAN Sclerotium rolfsii PENYEBAB REBAH KECAMBAH PADA KEDELAI DENGAN BAKTERI KITINOLITIK Novi Malinda; Dwi Suryanto; Kiki Nurtjahja
Saintia Biologi Vol 1, No 1 (2012)
Publisher : Saintia Biologi

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Abstract

The inhibition of Sclerotium rolfsii as causal agent of soybean damping off by using chitinolytic bacteria were studied in Laboratory of Observation Pest and Disease UPT-BPTPH 1 and Laboratory of Microbiology, Department of Biology, Faculty of Mathematics and Natural Sciences, University of Sumatera Utara, Medan. The aim of this research was to investigate  the ability of chitinolytic bacteria to inhibit the growth of S. rolfsii. Six isolates of chitinolytic bacteria were used in this study. The inhibition zone between colony of the bacteria and the fungus was measured. The result showed that the bacterial isolates has different ability in inhibiting the growth of S. rolfsii. Enterobacter sp. BK15 and Bacillus sp. BK13 were the most effective in inhibiting the growth of S. rolfsii with inhibition zone of 3.70 cm and 3.75 cm, respectively. The less effective was shown by Enterobacter sp. PB17 with inhibition zone of 0.10 cm, while Enterobacter cloacae LK08 have no ability to inhibit S. rolfsii. The seeds soaked in bacterial suspension by  Bacillus sp. BK13 dan Enterobacter sp. BK15 were able to reduce damping off by 44.4% and 50%, respectively.   Keywords: Bacillus sp., damping off, Enterobacter sp., Sclerotium rolfsii, soybean
Co-Authors Abdillah, Latifah Ningrum Agnes Dame Sinta Uli Berliani, Kaniwa Cut Fatimah Zuhra DAYAR ARBAIN DEDI PRIMA PUTRA DWI SURYANTO Elimasni Erman Munir Erni Jumilawaty Eryna Elfasari Rangkuti etti sartina siregar Ferdinand Susilo GINTA RIO Hasanah, Putri Hesti Wahyuningsih Ida Fauziah Ida Fauziah, Ida Ira Wulan Dani Irene Banjarnahor Irene Banjarnahor, Irene Isnaini Nurwahyuni Jendri Mamangkey Julius Paolo Siregar Kardhinata, Harso Lisa Novita Arios Lubis, Nurul Abdillah Mashitah, Ulfa Masitta Tanjung Muhammad Yusuf Muhammad Yusuf Nasution, MHD. Fauzi Novi Malinda NUNUK PRIYANI Okky Setyawati Dharmaputra Putri, Mimmy Sari Syah Rahmiati Rahmiati Rahmiati Rahmiati Riska Annisa Putri Riyanto Riyanto Rizal Syarief Rosliana Lubis Sartini Sartini Sri Dwi Hastuti Srimaulinda Srimaulinda Supriharti, Deny TATA BINTARA KELANA Winda Winda Winiati Pudji Rahayu Yurnaliza, Yurnaliza Zebua, Winda Irawati