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INDONESIA
JURNAL BIOLOGI INDONESIA
Published by Lembaga Ilmu Pengetahuan Indonesia
ISSN : 08544425     EISSN : 2338834X     DOI : -
Core Subject : Science,
Biochemistry, Genetics & Molecular Biology
Arjuna Subject : -
Articles 847 Documents
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Pengaruh Zooxanthellae Karaug Terhadap Kelangsungan Hidup dan Pertumbuhan Kerang Raksasa Kima (Tridacna squamosa) Ambariyanto, Ambariyanto
JURNAL BIOLOGI INDONESIA Vol 4, No 3 (2007): JURNAL BIOLOGI INDONESIA
Publisher : Perhimpunan Biologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2916.456 KB) | DOI: 10.14203/jbi.v4i3.3256

Abstract

ABSTRACTThe influence of zooxanthellae isolated from corals on the growth and suwivorshipof giant clams. Giant clam known as marine bivalves (Tridacnidae) which live in coralreef. One important aspect of giant clam biology is the existence of zooxanthellae assymbiotic algae which have important role source of energy In hatchery operationalprocedure zooxanthellae were introduced into larvae. Zooxanthellae were isolated fromadult clams. Since clams are also known as endangered species, it is important to findother sources of zooxanthellae. The objective of this research is to investigate the effectof introduction of zooxanthellae which were isolated from different sources on the survivaland growth of giant clams larvae. The results showed that there is no differences on thesurvivorship and growth of giant clams larvae introduced by zooxanthellae isolated fromseveral corals. This result has open a possibility of using corals as source of zooxanthellaeinstead of using giant clams.Key words : zooxanthellae, giant clams, survivorship, growth
Optimasi Produksi Enzim Amilase dari Bakteri Laut Jakarta (Arthrobacter arilaitensis)   Purnawan, A.; Capriyanti, Y.; Kurniatin, PA.; Rahmani, N.; ., Yopi
JURNAL BIOLOGI INDONESIA Vol 11, No 2 (2015): JURNAL BIOLOGI INDONESIA
Publisher : Perhimpunan Biologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/jbi.v11i2.2195

Abstract

ABSTRACTAmylase is one of the most important industrial enzymes which can be used in a number of industrial processes including food industry, textile, paper industry, renewable energy, and pharmaceutical. This study reports the environmental conditions and nutrient media for amylase production from marine bacterium Arthrobacter arilaitensis. Various parameters such as substrate concentration, pH medium, temperature of fermentation, co-substrate, and nitrogen source was determined to obtain the optimum conditions. Maximum amylase enzyme production was obtained at starch concentration 1%, pH 7, temperature fermentation 30°C, co-substrate maltose with activity 2.7 U/mL. While the addition of several nitrogen sources was given decreased amylase activity, such as addition casein was decreased the activity into 2.3 U/mL. Keywords: Arthrobacter arilaitensis, amylase activity, optimization, co-substrate, pH, temperature, substrate, nitrogen source 
Sintesis Alkil N-asetilglukosamina (Alkil-GlcNAc) dengan Enzim N-asetilheksosaminidase yang diisolasi dari Aspergillus sp. 501 Saskiawan, Iwan; Handayani, Rini
JURNAL BIOLOGI INDONESIA Vol 7, No 1 (2011): JURNAL BIOLOGI INDONESIA
Publisher : Perhimpunan Biologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/jbi.v7i1.3130

Abstract

ABSTRACTEnzymatic Synthesis of Alkyl N-acetylglucosamine (Alkyl-GlcNAc) by Application ofTransglycosylation Activity of ?-N-Acetylhexosaminidase from Aspergillus sp. 501. ?-NAcetylhexosaminidasefrom Aspergillus sp. 501 has transglycosylation and hydrolytic activity.Transglycosylation occur through transfer of N-acetylglucosamine (GlcNAc) which washydrolyzed from p-nitrophenyl-?-N-acetylglucosamine (pNP-GlcNAc) to various alcohols. Thetransglycosylation product was determined by Thin Layer Chromatography and HighPerformance Liquid Chromatography. Using this transglycosylation activity the novelcompound of Alkyl-GlcNAc was synthesized using N-acetylchitotriose as a donor and anethanol as an acceptor.Keywords: Alkyl N-acetylglucosamine, Transglycosylation, ?-N-Acetylhexosaminidase,Aspergillus sp. 501
Keanekaragaman Fauna Ikan di Kawasan DAS Hulu Tabalong, ~abupatenT abalong, Kalimantan Selatan Tjakrawidjaja, Agus H.
JURNAL BIOLOGI INDONESIA Vol 3, No 4 (2002): JURNAL BIOLOGI INDONESIA
Publisher : Perhimpunan Biologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (275.746 KB) | DOI: 10.14203/jbi.v3i4.3324

Abstract

ABSTRACTFish Fauna Diversity of upper Tabalong basin area, Tabalong District, SouthKalimantan. A survey was done to examine the freshwater fish fauna of the upper Tabalongarea, with emphasis on the PT. AYI production forest area, Tabalong District, SouthKalimantan Province. Field work done 13 - 28 June 2001. Fish were sampled at 26 sites inupper Tabalong, within the Tabalong Kiwa catchment above Panaan, on the Lou tributary ofthe Kumap River, and on the Ayu tributary of the Tabalong Kanan river. Sampling was doneusing a variety of methods including siene net, cast net, and gill net, hook and line, rotenoneand electrical shock 120 volt. A total of 93 fish species were recorded, in 34 genera and 11families. The fish fauna of upper Tabalong is typical of that in rivers systems in Kalimantan,in that is dominated by Cyprinidae family 45 species (48.4%) in 18 genera, 28 species(30.1%) in five genera of which are in the Balitoridae, five species (5.4%) in two genera ofMastacembelidae, four Species (4.3%) in two genera of Bagridae, Sisoridae, Channidae andTetraodontidae each three Species (3.2%) in one genera, two (2.1%) in two genera ofCobitidae, and the end Clariidae, Synbranchidae and Osphronemidae each one species (1.1%)in one genera. Five species of fish are new record of distrbution to Borneo, one species maybe New species (in process).Keywords: Diversity, fish, species, abundance, Tabalong, Kalimantan Selatan
Produktivitas dan Serapan Nutrien Harian Spirogyra sp. dan Hydrodictyon sp. Pratiwi, Niken Tunjung Murti; Ayu, Inna Puspa; Nugraha, Bayu
JURNAL BIOLOGI INDONESIA Vol 12, No 1 (2016): JURNAL BIOLOGI INDONESIA
Publisher : Perhimpunan Biologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (821.599 KB) | DOI: 10.14203/jbi.v12i1.2325

Abstract

This research aimed to analyze the potency of primary productivity (PP) and daily nutrients uptake ofSpirogyra sp. and Hydrodictyon sp. The research was conducted using Randomized Block Design andCompletely Randomized Design. Randomized Block Design was used to determine the difference of PP ofboth filamentous microalgae in different time periods. Completely Randomized Design was used to determinethe difference of daily net primary productivity and total amount of nutrients utilization by both filamentousmicroalgae in the same light intensity. The observations showed that Spirogyra sp. dan Hydrodictyon sp. hassame PP (p>0,05), both in total (daily) and time periods. The morning PP of two filamentous microalgae weredifferent from the daylight (p<0,05), and the daylight has different value from the afternoon (p<0,05), but therewere similar value of PP between morning and afternoon (p>0,05). Spirogyra sp. and Hydrodictyon sp. hassimilar capability in uptaking nutrients daily and in time periods observations (p>0,05).Keywords: Hydrodictyon sp., nutrients, primary productivity, Spirogyra sp.
Pencirian Karbon Organik Air Sungai Citarum Hulu Dari Masukan Air Limbah Penduduk dan Industri Harsono, Eko; Nomosatryo, Sulung
JURNAL BIOLOGI INDONESIA Vol 6, No 2 (2010): JURNAL BIOLOGI INDONESIA
Publisher : Perhimpunan Biologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (981.732 KB) | DOI: 10.14203/jbi.v6i2.3165

Abstract

ABSTRACTCharacterisation of Organic Carbon of Up Stream Citarum River Water from Domestic andIndustrial Waste Effluent. The local government of Citarum upstream area has conducted theriver cleaning program to increase Disolved Oxygen since 1991 until now. The program hasimpacted to installments of to wastewater treatment for 80% industrials in the Upper Citarumdrainage area declining the load of BOD5 wastewater. However most of waste water comingfrom Banung population have been treated in the collective wastewater treatment (IPAL) ofBojongsoang. Nevertheless, the low concentration of Dissolved oxygen which is under theminimum stream standard concentration, 3mg/l still becomes a problem until now. Anineffectiveness of improvement of the DO is caused by the treatment effluent BOD5 load fromdomestic and industrial wastewater and low awareness industrial wastewater aboutcharacteristics of river water quality . This research aimed to characterize the BOD oxidationrate and BOD5 regime of each river reach base on wastewater domestic or industrial characteristic.The result of this research can then be applied to build the priority of the load reduction ofBOD5 wastewater domestic or industrial in each reach of that river. The characteristic ofoxidation rate have investigated at influent point and water body of Upper Citarum River bymultivariate cluster observation. The oxidation rate was calculated by least-square methodfrom BOD data. The BOD observation was measured by BOD meter everyday for 5 days. Theresult shows that Curugjompong at 0 to 21st km and 36th km to Majalaya bridge ischaracterizedby an industrial sewage, while the upper Citarum at 21 to 36 Km is characterizedby an domesticsewage.Key words: Characteristic, oxydation rate, Citarum river, organic carbon.
Potensi Sifat Antioksidan pada 10 Jenis Ekstrak dari Famili Rubiaceae Marusin, Sofnie; Saefudin, Saefudin; Chairul, Chairul
JURNAL BIOLOGI INDONESIA Vol 9, No 1 (2013): JURNAL BIOLOGI INDONESIA
Publisher : Perhimpunan Biologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (117.929 KB) | DOI: 10.14203/jbi.v9i1.150

Abstract

Famili Rubiaceae telah lama dikenal sebagai sumber tanaman obat Indonesia. Beberapa spesies seperti Coffea arabica,Morinda citrifolia, Chinchona succirubra telah digunakan sebagai obat rakyat sejak jaman dulu. Penelitian ini bertujuanuntuk mengetahui nilai peroksida dan aktivitas antioksidan pada 10 jenis ekstrak famili Rubiaceae yang lain.Nilai peroksida (POV) diukur menggunakan metode iodometri dan hasil pengukuran menunjukkan POV yang berbedanyata kulit kayu Anthocephalus macrophyllus (69,48), kulit kayu Wendlandia glabrata (67,86), kulit kayu Guettardaspeciosa (73,17) dan daun Paederia foetida (89,14). Aktivitas antioksidan diuji menggunakan metode tiosianat(FTC) pada empat jenis ekstrak yang berpotensi, yaitu kulit kayu A. macrophyllus, kulit kayu W. glabrata, kulit kayuG. speciosa dan daun P. foetida. Nilai absorbansi (A) dari masing-masing jenis adalah 0,294; 0,293; 0,365; dan 0,375,dibandingkan dengan kontrol negatif (0,919) dan kontrol positif (0,31).Kata kunci: Rubiaceae, sifat antioksidan, POV, metode tiosianat (FTC)
Keragaman Genetik pada Kukang (Nycticebus coucang) Berdasarkan pada gen 12S rRNA Mitokondria Wirdateti, Wirdateti; Okayama, Toshinao; Kurniati, Hellen
JURNAL BIOLOGI INDONESIA Vol 3, No 2 (2001): JURNAL BIOLOGI INDONESIA
Publisher : Perhimpunan Biologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/jbi.v3i2.3478

Abstract

ABSTRACTGenetic Diversity of Slow loris (Nycticebus coucang) based on Mitochondrial 12S rRNA gene. The research on genetic diversity of slow loris Nycticebus coucang (kukang) was carried out. The samples are 12 individuals from three locations (Sumedang and Jember in Java, and Lampung in Sumatera). Total DNA was extracted from blood and tissue. The mitochondrial 12S rRNA nucleotide sequences were determined to investigate genetic diversity of this species. This region was amplified by using L1091 and H 1478 primers by PCR. As a result of the analysis for 386 bp nucleotide sequence, five haplotypes were found, two from Java and three from Sumatra, respectively.Key words : Slow lories, Nycticebus coucang, genetic diversity, 12S rRNA mtDNA
Asosiasi Spesies Tumbuhan Obat Langka di Beberapa Kawasan Hutan Taman Nasional, Pulau Jawa Hidayat, Syamsul
JURNAL BIOLOGI INDONESIA Vol 8, No 2 (2012): JURNAL BIOLOGI INDONESIA
Publisher : Perhimpunan Biologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (74.559 KB) | DOI: 10.14203/jbi.v8i2.3051

Abstract

Association of endangered medicinal plants in some forest areas of national parks in Jawa. The existences of medicinal plants in the forest is decreasing and most of them are becoming scarce. Some species of endangered medicinal plants spread over the area national parks onthe island of Java. The inventory has been widely performed, but the studies of the existence of the species concerned associated with other species as well as with environmental factors are still very rare. This paper presents the results of association analysis interspecies with chisquare test and species-habitat associations using Canoco for windows 4.5. The results show that there is no interspecies association in general, but a positive association multispecies hasoccurred in the area of Meru Betiri NP and negative association multispecies occurred in Alas Purwo NP and Bromo Tengger Semeru NP. Ordination plot show that Eucresta horsfieldii has association with the altitude and has not associated with other rare medicinal plants. While Arcangelisia flava is not associated with environmental factors as well as other species of medicinal plants.Key words: endangered medicinal plants, association analysis
Struktur Vegetasi dan Simpanan Karbon Hutan Hujan Tropika Primer DI Batang Toru, Sumatra Utara Onrizal, Onrizal; Ismail, Ismail; Perbatakusuma, Erwin A.; Sudjito, Herwasono; Supriatna, Jatna; Wijayanto, Iwan H.
JURNAL BIOLOGI INDONESIA Vol 5, No 2 (2008): JURNAL BIOLOGI INDONESIA
Publisher : Perhimpunan Biologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1915.792 KB) | DOI: 10.14203/jbi.v5i2.3197

Abstract

ABSTRACTVegetation structure and carbon stock of primary tropical rain forest at Batang Toru, NorthSumatra. Deforestation and forest degradation contribute for 20 to 25 percent of annual totalcarbon dioxide (CO2) emissions and to be one of substantial factor of climate change or globalwarming. Avoided deforestation into carbon-market regime by reducing emission fromdeforestation and forest degradation (REDD) scheme has been agreed on COP 13 of UNFCCCthat was held in Bali on December 2007. REDD application need reliable scientific basic aboutthe amount of carbon storage in well managed natural forest. The aims of this research were todetect vegetation structure and to estimate aboveground biomass, carbon stock and CO2absorption of primary tropical rain forest at Key Biodiversity Area of Batang Toru ForestBlock, North Sumatra Province by existing allometric equation. We designed 20 sampling plotsof 20 x 20 m in two forest area, i.e. Aek Game-game forest and Aek Silemes forest. All trees 5 cmat diameter at breast height (dbh) and above were measure and identified. From the study, thedistribution of diameter class formed “L” curve which mean an indication as balanced forest.The aboveground biomass of the forest is 544.4 to 583.0 t/ha in Aek Silemes forest and 604.5 to613.6 t/ha Aek game-game forest. It is equivalent with 272.2 to 291.5 t C/ha or 999.0 to 1,069.9 tCO2/ha in Aek Silemes forest and 302.2 to 306.8 t C/ha or 1,109.2 to 1,125.9 t CO2/ha in Aekgame-game forest. More of carbon stock (>46% for Aek Silemes forest and >58% for Aek gamegameforest) saved within dbh of trees 50 cm and above. Therefore, sustainable managementof forest ecosystem is very important to reduce CO2 emission from deforestation and forestdegradation and to improve the function of forest ecology and economy.Keywords: aboveground biomass, carbon stock, CO2, primary tropical rain forest, BatangToru-North Sumatra

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