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Biocelebes
Published by Universitas Tadulako
ISSN : -     EISSN : 25805991     DOI : -
Core Subject : Agriculture,
Agriculture, Biological Sciences & Forestry
Arjuna Subject : Biokimia, Genetika dan Biologi Molekuler - Biokimia, Genetika dan Biologi Molekuler (Lain-Lain)
Articles 303 Documents
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Kajian Etanolisis In Situ Minyak Kelapa untuk Sintesis Etil Ester Asam Lemak Ijirana dan Afadil Ijirana dan Afadil
Biocelebes Vol. 3 No. 1 (2009)
Publisher : Biology Department, Mathematics and natural science, Tadulako University

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Abstract

There are several aim of this research, consist of: 1) to find out optimum concentration catalyst H2SO4 in synthesis of ethyl ester coconut oil fat acid when FFA contained in coconut flour more than 5 %, 2) to find out concentration of catalyst NaOH (percent v/v) that produce the higher fat acid ethyl ester product, 3) to find out ratio of ethanol 95 % / coconut flour, and 4) to find out the best reaction temperature of coconut oil ethanolysis in situ that produce ethyl ester coconut oil fat acid in higher yield. The first step is to know water contain on coconut flour. The second is to know oil contain in coconut flour using sochletation method. FFA analyzed was done to find out how many reaction will be done, transestherification and esterification. Esterification was not done because FFA contained only 2 % (not more than 5%). From this research, we can conclude that selected reaction condition are: ratio coconut flour with ethanol 95%, 1:5, concentration of catalyst, NaOH 1,2% and reaction temperature 55oC. Key words: Ethanolysis in situ, coconut oil, fat acid ethyl ester syntesis.
Kespesifikan Biokatalis Dedak Padi dalam Reaksi Pembentukan Antibakteri Monoasilgliserol dari Minyak Kelapa mappiratu mappiratu
Biocelebes Vol. 3 No. 1 (2009)
Publisher : Biology Department, Mathematics and natural science, Tadulako University

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Abstract

In an effort to analyse the spesification of rice bran lypase and antibacterium activity of monoacylglyserol (MAG) produced from various reaction time, it has been performed glyserolysis of coconut oil for 192 h with observation interval 24 h. It was recorded that lypase of rice bran of variety Maros had a higher spesification for formation of short and intermediate chain monoacylglyserols (MAGs) than sature and unsature long chain MAGs. MAG inhibition on Bacillus cereus and Staphillococcus aureus reached optimum at 72 h reaction time, whilst Vibrio cholerae reached optimum at 192 h and it was insignificantly different with 48, 144 and 168 h. MAG inhibition on the three bacteria strains reached minimum at 92 h. During the reaction period, antimicrobial MAG reached minimum. Key words: Spesification, biocatalyses, rice bran, antibacterium MAG, coconut oil.
Hutan Tropis Indonesia, Keanekaragaman Hayati, dan Kaitan dengan Pemanasan Global Ramadhanil Ramadhanil
Biocelebes Vol. 3 No. 1 (2009)
Publisher : Biology Department, Mathematics and natural science, Tadulako University

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Abstract

Indonesia is recognized as one of ”Megabiodiversity countries” in the worldwide which is very rich with biological diversity. It also has been identified as the second largest country which possess tropical rainforest after Brasil. The large area of this tropical rain forest particularly in Indonesia is currently decreased year by year. It is damaged by various human activities such as land converted to plantations in large scale, human resettlement, both legal and illegal logging, hunting as well as forest fire. This human activities are common factors and primary agents contributing to the vast endangerments and extinctions occurring in the past and in the foreseeable future. On the other hand, deforestation and forest degradation have been mentioned to take alarming proportions with severe negative global and regional consequences such as global warming and climate changes. The aim of this paper is to communicate the relationship between the richness of tropical rainforest and global warming or climate changes. Key words: Tropical rainforest, Indonesia, biodiversity and global warming.
Apakah Hutan Hujan Tropis Dapat Meredam Dampak Pemanasan Global? (Studi Kasus Keseimbangan Energi dan Air di Sekitar TNLL.) Sance Lipu
Biocelebes Vol. 3 No. 1 (2009)
Publisher : Biology Department, Mathematics and natural science, Tadulako University

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Abstract

Global warming is a hot issue recently. Specially in climate and meteorology researcher. There is no doubt that global warming was effects almost all life around the world. Global warming can defined as the increase in the average temperature of the Earth's near-surface air and oceans caused by greenhouse gases mainly CO2. Two main factors caused global warming are natural effect and anthropogenic factors. The changes in global climate indicated by widely fluctuation of wet season and dry season, and Ozon (O3) reduce in pole area. These effects will follow by ice melt in artic and antartic. Study in Lore Lindu National Park around 2002 until 2005 indicated that tropical rain forest is a an ecosystem that very good function for absorb solar radiation, greenhouse gases and keeping sustainability of soil function as reservoir mineral and water. Forest conversion and illegal logging will increased solar radiation effect, decreased of CO2 and methane absorbed, decreased capacity of evapo-transpiration, and decreased water infiltration through the ground. Key words: tropical rain forest, Global warming effect.
Konsekuensi Biologis Pemanasan Global dengan Penekanan Terhadap Interaksi Serangga-Tumbuhan Shahabuddin Shahabuddin
Biocelebes Vol. 3 No. 2 (2009)
Publisher : Biology Department, Mathematics and natural science, Tadulako University

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Abstract

Global warming that caused by increasing of C02 in atmosphere effects many aspect on organism lives, including insects-plants interactions. The effect of CO2 increased will more complex when interact with another environment factors such as Nitrogen increased and atmosphere temperature increased. Global warming effects on physiology, phenology, distribution, adaptation, and interaction among species. Increasing of C02 gases in atmosphere potentially to rise attack of herbivory insects and effects on their natural enemy. Eventhough, the effect is very species spesific  and specific system on insects-plants interactions. It is needed  holistic understanding to build the strategy for herbivory insects controlled. In the other side, C02 increasing is a ecological issue that caused and effects to human life. It is need proactive attitude and communication to handle this problem together.
Keanekaragaman Jenis Fauna Amphibia di Taman Nasional Lore Lindu Annawaty Annawaty; Paserang Asri Pirade
Biocelebes Vol. 3 No. 2 (2009)
Publisher : Biology Department, Mathematics and natural science, Tadulako University

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Abstract

The aim of this research was to know the diversity of amphibians in Lore Lindu National Park. The research was used survey methods which was located at the conservation area of Kulawi section in the Lore Lindu National Park Central Sulawesi. The result of the research showed that there were five (5) species of amphibians collected which were found and belonged order Anura. These species were Bufo melanostictus, Bufo celebensis, Fejervarya cancrivora, Rana (Hylarana) erythraea, and Kaloula baleata Muller.
Struktur dan Komposisi Jenis Agroforestry Kebun-Campuran pada Berbagai Luas Pemilikan Lahan Di Desa Pattalikang Kecamatan Manuju Kabupaten Gowa Syamsuddin Millang
Biocelebes Vol. 3 No. 2 (2009)
Publisher : Biology Department, Mathematics and natural science, Tadulako University

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Abstract

This research aimed to determine pattern of agroforestry system and agroforestry spesies’s structure and composition of mixed garden practiced by farmer community at various land tenure area. This research was conducted in October to December 2005 in village of Pattalikang, district of Manuju, Regency of Gowa. It was decided to establish four categories of land tenure area based on the preliminary survey and field orientation namely > 0.5 ha, 0.5-1.5 ha, 1.1-1.5 ha, and < 1.5 ha. Method used to set up those categories was Purposive Sampling in which there were 10 plots established for measurement in each type of land tenure area. The size of plot was 20 x 50 m or 0.1 ha. Tree height was measured and species name was recorded to identify the structure and composition of plant species. Herbarium was made for those plant species that have not identified. The research showed that pattern of agroforestry practiced by farmer community was agrisilviculture with irregular plant pattern. Structure and species composition of mixed agroforestry garden at different land tenure area was relatively similar one of each other. The vertical structure consisted of 3 stratum while the species composition were 28 species at land tenure area of < 0.5 ha, 25 species at land tenure area of 0.5-1.0 ha, 26 species at land tenure area of 1.0 ha -1, 5 ha, and 25 species at land tenure area of > 1, 5 ha.
Kontribusi Sektor Kehutanan Terhadap Pendapatan Asli Daerah Pada Era Otonomi Daerah di Kabupaten Muna A Mujetahid M A Mujetahid M
Biocelebes Vol. 3 No. 2 (2009)
Publisher : Biology Department, Mathematics and natural science, Tadulako University

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Abstract

This research was aimed to know contribution of forestry sector to Local Government Revenue (Pendapatan Asli Daerah, PAD) at district of Muna in regional autonomy era. The research result is expected to contribute in evaluating and compiling Regional Budget and Expenditure Plan. The result is also intended as an evaluation of forest product restribution policy. This research was carried out in Muna district. Data collected with purpossive sampling using observation technique/survey, interview and discussion with related stakeholders. The data than processed, tabulated and clasified base on with research aim, and analysed descriptively. The results show that the contribution of forestry sector to PAD to Muna district during 2000-2004 in average was 38,88% of PAD in total.
Kajian Reaksi Oksidasi Senyawa 2,6,6-Trimetil Bisiklo[3.1.1]Hept-2-Ena Menggunakan Aliran Gas Oksigen Dan Zeolit Nax Nohong Nohong
Biocelebes Vol. 3 No. 2 (2009)
Publisher : Biology Department, Mathematics and natural science, Tadulako University

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Abstract

Oxidation reaction has been done oxidation on ά-pinena (2,6,6-trimetil bisiklo[3.1.1]hept-2-ena) utilizing oxygen gas flow and NaX zeolite as catalyst. The aim of the research is to study both the application of oxygen flow as oxidant and zeolite NaX as catalyst to produce the oxidation product that can be controlled by regioselektif. The Reaction product and The progress of oxidation reaction was observed using Chromatography gas (GC), Infra red Spectrofotometry and gas chromatography gas – mass spectrograph (GC-MS). The result showed that the main reaction product was 2,6,6-trimetil bisiklo[3.1.1]hept-1-en-3-on. The temperature Condition and the concentration of Zeolite were 110oC and 4% (m/v) respectively. The reaction mechanism for formation 2,6,6-trimetil bisiklo [3.1.1]hept-1-en-3-was estimated conduct through transition state 2,6,6-trimetil bisiklo[3.1.1]hept-1-en-2-hidroperoksida free one molecule of water to form keton carbonil compound.
Efek Radiasi Sinar Gamma Terhadap Perkecambahan Serbuk Sari dan Pembuahan Cabai Besar Muhammad Alwi; Eny Yuniaty
Biocelebes Vol. 3 No. 2 (2009)
Publisher : Biology Department, Mathematics and natural science, Tadulako University

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Abstract

This research aim to to know influence of -ray irradiation sprout of pollen, and also effect to percentage of efficacy of impregnation of hot pepper plant. Result of research indicate that hot pepper plant (LV-2319, LV-2323 have pollen higher viabel generally than hot pepper plant (CK-L, CK-C). This result energy of sprout of pollen and mount impregnation efficacy also become high, that is reach 36,20% (LV-2323) and 28,60% (LV-2319).

Page 16 of 31 | Total Record : 303

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