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JSDH
Published by Institut Pertanian Bogor
ISSN : 2477037X     EISSN : 2477037X     DOI : DOI: 10.29244/jsdh.9.1.7-16
Core Subject : Science, Agriculture,
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Immunology & microbiology
The "Jurnal Sumberdaya HAYATI" is a peer-reviewed and an open access journal published by Department of Biology, Bogor Agricultural University, Indonesia. The journal publishes significant and important research from all area of biodiversity, biosystematics, ecology, physiology, behavior, genetics and biotechnology. All life forms, ranging from microbes, fungi, plants, animals, and human, including virus.
Arjuna Subject : Ilmu Pertanian dan Biologi (Semua) - Ilmu Pertanian dan Biologi (Lain-Lain)
Articles 4 Documents
 1 
Search results for , issue "Vol. 2 No. 2 (2016)" : 4 Documents clear
Formula Media Pertumbuhan Bakteri Asam Laktat Pediococcus pentosaceus Menggunakan Substrat Whey Tahu SAFITRI NURLAELA; TITI CANDRA SUNARTI; ANJA MERYANDINI
Jurnal Sumberdaya Hayati Vol. 2 No. 2 (2016)
Publisher : Departemen Biologi, Institut Pertanian Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jsdh.2.2.31-38

Abstract

The lactic acid bacteria (LAB) and its lactic acid are commonly used to preserve the food and to extend the food’s shelf life. MRS media is a growth medium for LAB, but it is not feasible for industrial scale application. Cheaper substrate from agriculture products is therefore required, such as tofu whey, which is potential to be used as LAB medium. Tofu whey contains important components to support the LAB growth, but it needs C source (5% of glucose) and nitrogen source (1% ammonium sulphate or urea) supplementations. This study aimed to investigate the influence of N-source to Pediococcus pentosaceus growth and its capability in producing acid compounds. The result showed that addition of urea increased pH fermentation, contrarily to that ammonium sulphate supplementation. The highest bacterial growth rate (μmaks) was observed on media with urea (0.43 jam-1), while the highest acid production was occured on media with ammonium sulphate (9.13 mg/mL). Supplementation of ammonium sulphate and urea on tofu whey highly supported the growth of bacterial population for about 6.5 × 108 CFU/mL and 5.4 × 108 CFU/ mL, respectively, but still lower compared to MRS media (2.03 × 1010 CFU/mL). 
Potensi Seduhan Limbah Baglog Jamur Tiram (Pleurotus ostreatus) dalam Menekan Populasi Radopholus similis dan Meloidogyne spp. pada Tanah Asal Perakaran Tanaman Lada (Piper nigrum L) ANKARDIANSYAH PANDU PRADANA; DIANA PUTRI; ABDUL MUNIF
Jurnal Sumberdaya Hayati Vol. 2 No. 2 (2016)
Publisher : Departemen Biologi, Institut Pertanian Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jsdh.2.2.39-44

Abstract

Indonesia is one of the largest pepper producing countries in the world. One of the pepper-producing provinces in Indonesia is the Bangka Belitung Islands (Babel). However, the infection of Radopholus similis and Meloidogyne spp. which causes yellow disease becomes one of obstacles in pepper cultivation in Babel. Thus, alternative solution to overcome this yellow disease is by reducing the amount of nematode inoculum of R. similis and Meloidogyne spp. in soil. This study aimed to determine the effectiveness of the infusion of oyster mushrooms baglog waste enriched with molasses to control the population of R. similis and Meloidogyne spp. and to increase the population of rhizobacteria. Infusion of oyster mushrooms baglog waste was mixed with 1% of molasses and was poured into soil obtained from the pepper plant roots. The concentrations used were 10%, 20%, 30% and 50%. Population of phytonematode, rhizobacteria, proteolytic bacteria, and group of fluorescence bacteria were calculated before and 7 days after treatment. Results showed that the populations of R. similis and Meloidogyne spp. in the soil poured with the influsion of oyster mushroom baglog waste decreased by 29.11% (R. similis) and 24.61% (Meloidogyne spp.), compared to the before and control treatments. The suppression of nematode population was found to be the highest in the influsion treatment at concentration of 50%. Overall, treatment of all concentrations succeeded to increase the population of rhizobacteria, proteolytic bacteria, and group of fluorescence bacteria in soil. Moreover, the highest increase was found in soil treated with concentration of 50%. This study provided new information that the infusion application of oyster mushrooms baglog waste enriched with molasses had the potential to increase the population of rhizobacteria and suppress the amount of pathogens R. similis and Meloidogyne spp. 
Bacteria as Greenhouse Gases Reducing Agents from Paddy Plantation MAFRIKHUL MUTTAQIN; MIFTAHUDIN .; IMAN RUSMANA
Jurnal Sumberdaya Hayati Vol. 2 No. 2 (2016)
Publisher : Departemen Biologi, Institut Pertanian Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jsdh.2.2.45-51

Abstract

High methane oxidation activity of local isolated methanotrophic bacteria have a potent as methane gases reducing agent while combined with nitrogen fixing bacteria as paddy biofertilizer. The aim of the research was to evaluate the effectiveness of the bacteria as methane gases reducing agent and biofertilizer in paddy plantation. The research was arranged in a completely randomized design consisted of fertilizer types and watering system treatments with four replicates. The research showed that paddy shoot length was not affected by the treatment. On the other hand, both plant freshand dry weight, as well as the number of productive tiller were affected by interaction of fertilizer types and watering system. Fertilizer types affected grain per panicle and methane flux after fertilization. In the end of paddy vegetative stage, bacterial fertilizers were capable to reduce methane emission in different rate. The different result in methane flux was likely due to the interaction between soil local microorganisms and soil chemical component. 
Efektivitas Ekstrak Etanol Biji Pinang Terhadap Densitas GLUT4 pada Sel-Sel Otot Rangka Mencit yang Terinduksi Hiperglikemia MULIA SAFRIDA SARI; AHMAD RIDWAN
Jurnal Sumberdaya Hayati Vol. 2 No. 2 (2016)
Publisher : Departemen Biologi, Institut Pertanian Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jsdh.2.2.52-58

Abstract

Betel nut (Areca catechu) was proven to have antihyperglycemic activity through increased PI3K pathway in the GLUT4 translocation in cells. However, research on the ethanol extract of betel nut in Indonesia is still limited. The main problem in this study was whether the ethanol extract of betel nut could improve glucose tolerance in a two-hour postprandial period and whether the ethanol extract of betel nut could induce GLUT4 translocation in skeletal muscle cells of mice induced hyperglycemia. Glucose tolerance test results showed that treatment of the ethanol extract of betel nut for 24 days with all doses tested: P50,100,150,200 and 250 mg/kg body weight could improve glucose tolerance in a two-hour postprandial period. The protein electrophoresis of that fasting and one hour postprandial state treatments resulted an increase in GLUT4/βActin density ratio of P250 group compared to negative and positive controls. In this case, GLUT4/βActin density ratio of P100,P200 and P250 were higher than that GLUT4/βActin density ratio of P50 and P150. Increased in GLUT4/βActin density ratio showed enhancement of the GLUT4 in skeletal muscle cells in fasting and one hour postprandial state after treated with ethanol extract of betel nut. 

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