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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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Effect of Nitrogen Addition on the ?-Amylase Production by Aspergillus niger, Rhizopus oligosporus and Neurospora crassa in media contained Sargassum and Rice Seed on Solid State Fermentation Kanti, Atit
JURNAL BIOLOGI INDONESIA Vol 12, No 2 (2016): JURNAL BIOLOGI INDONESIA
Publisher : Perhimpunan Biologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1007.246 KB) | DOI: 10.14203/jbi.v12i2.2891

Abstract

ABSTRACTAmylase is one of the hydrolytic enzymes which is commercially important and represent about 25–33% of the world enzyme market. Amylase production is affected by substrate for enzyme productions include particle size, initial moisture content and nutrient addition. The present study describe the effect of N-species addition on alpha amylase production by Aspergillus niger Km1, Rhizopus oligosporus Km2 and Neurospora crassa Km3 in medium contained sargasum and rice seed on solid state fermentation. Various ration of media composition contained dried sargassum and rice seed were studied. The effect of particle size of sargassum, initial water content on ?-amylase production were evaluated. The best media composition was then augmented with N-species include sodium nitrate, yeast extract, and peptone on solid state fermentation. Best media composition was 60:40 (w/w) of sargassum and rice seed respectively, with initial moisture content was 60%. Increase 5 times of amylase activity was obtained when sodium nitrate (0,5% w/w) was added to production medium. N-species significantly affect Alpha amylase production on sargassum and rice seed with maximum alpha amylase production was 36,66 unit by Rhizopus oligosporus.The economic value of Sargassum can be increased through alpha amilase production.Keywords: Amylase, Nitrogen, solid state fermentation, Rhizopus oligosporus, Neurospora crassa
Hutan Mangrove Cagar Alam Pulau Sempu, Jawa Timur Suhardjono, Suhardjono
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 | DOI: 10.14203/jbi.v9i1.153

Abstract

Keanekaragaman jenis tumbuhan mangrove di Ra’as, Air Tawar dan Teluk Semut, Pulau Sempu, Jawa Timurtercatat 30 jenis tumbuhan yang termasuk dalam 18 suku dan 24 marga. Dua belas jenis di antaranya termasukdalam Kriteria IUCN (Anonymous, 1997). Kenakearagaman jenis yang paling tinggi di Ra’as (23 jenis), TelukSemut (17 jenis) dan Air Tawar (16 jenis). Hutan mangrove di daerah ini didominasi oleh Ceriops tagal, Rhizophoraapiculata, R. mucronata, Aegiceras corniculatum, Xylocarpus granatum dan Excoecaria agallocha.Kata kunci : Mangrove, Ra’as, Air Tawar, Teluk Semut, Pulau Sempu, Jawa Timur, IUCN.
Pertumbuhan dan Produksi Rimpang Temu Lawak di Polybag yang Benihnya Hasil Kultur In Vitro Hadipoentyanti, Endang; Syahid, Sitti Fatimah
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.v3i2.3481

Abstract

ABSTRACTGrowth and Yield of Temoe Lawak in Polybag which Planting Material from In Vitro Culture. The growth and yield of temoe lawak (Curcuma xanthorrhiza Roxb.) from in vitro culture was conducted in the green house, Bogor from October 2000 to September 2001. The materials were obtained from temoe lawak plant two months after acclimatizating. The plant were planted in the polybag 60 cm x 60 cm. The treatments were consisted of the mixtures of soil and cattle manure with the proportional of 1 : 1 ; the soil and rice husk (1 : 1) ; the soil, cattle manure and rice husk (1 : 1 : 1). The experiment was designed according to randomized block design with three replicates and ten polybags per replicate .The parameters observed were plant performance, growth percentage at 5 and 10 months, rhizome weight per plant, length and width of primery rhizome, roots and water rhizome weight per plant. The result of experiment showed that the growth percentage of plant were 100% on ten months for all treatments. The growth and rhizome performance were similar with the parent. The best treatment for growth was the mixture of soil and cattle manure on the proportional of 1 : 1, with tiller numbers (3,57) , leaves number (18,2), plant height (140,6 cm) in five moths, rhizomes weight per plant (472,8 g), length and width of primery rhizome each 8,1 cm and 6,3 cm in ten months.Key words : Curcuma xanthorrhiza Roxb, growth, yield, in vitro
Pertumbuhan Bakteri Hasil Isolasi dari Tanah Perkebunan yang Tumbuh pada Media Mengandung Pestisida Propoksur dan Karbaril Imamuddin, Hartati; Laili, Nur; Rahmansyah, Maman
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 (204.636 KB) | DOI: 10.14203/jbi.v8i2.3054

Abstract

Growth Capacity of Soil Bacteria Isolates Obtained from Estate Area from Media Containing Propoxur and Carbaryl. Isolation actions have been carried out with three soil samples derived from soil estate of pine apple, sugar cane, and banana in Lampung area, Southern Sumatra. The isolates were grown in the selected media containing carbaryl insecticide, and herbicide of diuron and bromocyl. The highest and vigorous growth isolates have gathered from threedifferent soil samples, and subsequently named GGPC, GM, and NTF isolates. Furthermore, those isolates were studied through the growth rate in the media containing propoxur and carbaryl in the nutrient rich liquid (NB) and compared to limited mineral (MM). All of the isolates grew faster against pesticides in the liquid medium of NB compared to MM. High correlated value among parameters nurtured as due to bacterial population and those processes were not affected by media composition. The GM isolate showed similar pattern during propoxur decrease along with incubation even though the rate of pesticide elimination from the media was higher in the rich nutrient liquid media (NB) compared to MM.Keywords: microbe isolate, pesticide, propoxur, carbaryl
Isolasi dan Karakterisasi Bakteri Untuk Agen Bioremoval Logam Berat Merkuri Badjoeri, Muhammad
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 (120.194 KB) | DOI: 10.14203/jbi.v5i2.3200

Abstract

TULISAN PENDEKIsolasi dan Karakterisasi Bakteri Untuk Agen Bioremoval Logam BeratMerkuri
Fluks Bentik dan Potensi Aktivitas Bakteri Terkait Siklus Nitrogen di Sedimen Perairan Mangrove Pulau Dua, Banten Iswantari, Aliati; Wardiatno, Yusli; Pratiwi, Niken T.M; Rusmana, Iman
JURNAL BIOLOGI INDONESIA Vol 10, No 1 (2014): JURNAL BIOLOGI INDONESIA
Publisher : Perhimpunan Biologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (265.728 KB) | DOI: 10.14203/jbi.v10i1.336

Abstract

Mangrove ecosystem has important role as source of nutrient particularly nitrogen in coastal area. Nitrogen (N) is alimiting factor in marine and coastal area. The aim of this research was to study benthic fluxes and potency ofbacterial activity in sediment of mangroves area, related to nitrogen cycle. This research was conducted in floodedmangroves area in Pulau Dua. The sediment and overlying water was sampled using sediment core sampler.Experimental treatment for flux analysis and sediment-slurry were conducted in three hours. Nutrient of NH3-N,NO2-N, and NO3-N and abundance of nitrifier, denitrifier, DNRA, and ammonifier were analyzed. The resultsshowed that the abundance of anaerobic bacteria was higher than aerobic bacteria. The dominance of bacterialgroups found in sediment was ammonification bacteria. The highest nutrient concentration in sediment was NH3-N. Benthic fluxes value showed higher NH3-N tends to release from the sediment to water than NO2-N and NO3-N. Generally, mangrove sediment in Pulau Dua has higher potency ofbacterial activity (Vmax and Km) in NO3reduction by anaerobic bacteria than NH3 oxidation by aerobic bacteria.Keywords: bacteria, benthic fluxes, mangrove, potency of bacterial activity, sediment
Kepadatan Populasi Kodok Fejervarya cancrivora di Persawahan Kabupaten Karawang, Jawa Barat Kurniati, Hellen; Sulistyadi, Eko
JURNAL BIOLOGI INDONESIA Vol 13, No 1 (2017): JURNAL BIOLOGI INDONESIA
Publisher : Perhimpunan Biologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (336.176 KB) | DOI: 10.14203/jbi.v13i1.3097

Abstract

ABSTRACTKarawang District is the largest producer of frog meat in West Java. To find out how the frog harvesting impacts to the represent condition of population in the wild, on 16-27 May 2016 population survey was conducted on paddy field in East Karawang by implementing transect method with total length was 3000 meters. The results of this transect method showed that the population of juvenile was the highest in most areas of transects, followed by pre-adult population. The population of adult individuals was at the lowest and most adult male individuals were detected by the call that they make. Conditions of water supply in rice fields also determine the conditions of juvenile and pre-adult populations; newly planted rice fields with high water availability obtained the highest population per unit area compared to the condition of paddy fields with a little water availability; but exceptions to the plowed rice fields, despite the availability of a lot of water but disturbance from human activities was also high. Average density per unit area m2 for a little watery rice fields to dry with a total length of 1500 meters transect were as follows: (1) juvenil density was 0.33 individuals/m2, (2) pre-adult density was 0.04 individuals/m2, (3) adult density was 0.005 individuals/m2. Average density for much watery rice fields with a total length of 1200 meters transect were as follows: (1) juvenile density was 0.89 individuals/m2, (2) pre-adult density was 0.08 individuals/m2, (3) adult density was 0.01 individuals/m2.Key words: population density, Fejervarya cancrivora, paddy field, Karawang District
Pertumbnhan Ikan Tambra (Tor tambroides) dan Kancera (Tor soro) Pada Proses Domestikasi dengan Jenis Pakan yang Berbeda Haryono, Haryono; Subagja, Jojo
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 | DOI: 10.14203/jbi.v4i3.3261

Abstract

ABSTRACTThe Growth of Tarnbra fish (Tor tambroides) and Kancera fish (Tor soro) inDomestication Process with Different Fed. The experiment was conducted toevaluate the growth of two mahseer (tambra and kancera) from Muller Mountainareas in Central Kalimantan which were different fed in aquarium i.e: A. Frozenworm, B. Fish feed, and C. shrimp feed. The experiment follows Randomized CompleteDesign Methods. The replication of treatment is three times, each aquarium filled with1 individual as treatment and replication. They were fed daily for 100 days andmeasured each 20 days. The results showed shrimp feed gave growth fastest (0.460gldays), and the lowest is 0.170 gldays; the growth oftambra fish faster than kancerafish. The water quality of aquarium is suitable for growing these fish.Kata kunci: Growth, Tambra fish (Tor tambroides), Kancera fish (Tor soro), Fed
Penambahan Inokulan Mikroba Selulolitik pada Pengomposan Jerami Padi untuk Media Tanam Jamur Tiram Putih (Pleurotus ostreatus) Saskiawan, Iwan
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 | Full PDF (730.13 KB) | DOI: 10.14203/jbi.v11i2.2192

Abstract

ABSTRACTRecently, the cultivation of oyster mushroom (Pleurotus ostreatus) has increased enormously because of some reasons. Mushroom growers utilize sawdust,  byproduct of timber industry as main substrate in fruiting body production. Consequently, the availability of sawdust becomes an obstacle during mushroom cultivation. The aim of this study was to evaluate the effetivity of paddy rice straw as an alternative substrate in oyster mushroom cultivation. The paddy rice straw was inoculated with a cellulolytic microbs during composting process. They are Bacillus subtilis, Pseudomonas aeruginosa, Trichoderma harzianum and Aspergillus niger. The result showed that the fastest growing mycelia by fully colonizing 1.1 kg size baglog was obtained when the paddy rice straw was treated with B. subtilis (63.00 days), followed by the treatment with P. aeruginosa (63.67 days), A. niger (65.00 days), T.  harzianum (67.33 days), and negative control (67.33 days) respectively. On the other hand, the treatment of P. aeruginosa gaved the highest production of fruiting body (123.33g) followed by the treatment with B. subtilis (113.33g), A. niger (90.00g), control (83.33g) and T. harzianum (78.33g) per bag log over 2 period of time harvesting.  Keywords : Pleurotus ostreatus, paddy rice straw, compost 
Dimorfisme Seksual, Reproduksi dan Mangsa Kadal Ekor Panjang Takydromus sexlineatus Daudin, 1802 (Lacertilia :Lacertidae) Mumpuni, Mumpuni
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 | Full PDF (169.381 KB) | DOI: 10.14203/jbi.v7i1.3133

Abstract

ABSTRACTSexual Dimorphism, Reproduction and Prey of Long Tailed Lizard Takydromus sexlineatusDaudin, 1802 (Lacertilia :Lacertidae). The morphology and reproductive biology of Takydromussexlineatus were studied in Bogor. Males are larger than females. There is sexual dimorphism onhead size and tail length (larger and longer tail on males) of body size among sexually matureadults, apparently as a consequence of sexual selection. The diet of T. sexlineatus consists ofvariety of insects and their larvae, arachnids, decapods and snails. Most of the diet are insect(more than 70 % for adults and juveniles). There are higher prey competitions at adult skinksbetween males and females, adult females and juveniles, but not between adult males andjuveniles. The length of adult males and females are 44.6 - 58.1 mm and 49.6 - 62.3 mm respectively,lay eggs throughout the year with 2 -3 clutches, per clutch consists of 1 - 3 eggs.Key words: Lizard, Takydromus, Ecology, Sexual Dimorphism, Prey, Reproduction, Bogor, Indonesia

Page 22 of 85 | Total Record : 847

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