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INDONESIA
BERITA BIOLOGI
Published by Lembaga Ilmu Pengetahuan Indonesia
ISSN : -     EISSN : -     DOI : -
Core Subject : Science, Agriculture,
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology
Arjuna Subject : -
Articles 15 Documents
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Search results for , issue " Vol 9, No 2 (2008)" : 15 Documents clear
PEMANFAATAN KONSORSIUM BAKTERI LOKAL UNTUK BIOREMEDIASI LIMBAH TEKSTIL MENGGUNAKAN SISTEM KOMBINASI ANAEROBIK-AEROBIK Sastrawidana, I Dewa K; Lay, Bibiana W; Fauzi, Anas Miftah; Santosa, Dwi Andreas
BERITA BIOLOGI Vol 9, No 2 (2008)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1086.061 KB) | DOI: 10.14203/beritabiologi.v9i2.2020

Abstract

The objective of this research is to study the potential use microorganisms which are identified as Aeromonas sp., Pseudomonas $p., Flavobaclerium sp., Plesiomonas sp. and Vibrio sp. Five bacteria strains from sludge of Badung river were identified as Vibrio sp. and Plesiomonas sp. Two anaerobic-aerobic reactors were operated to treat textile waste water. Each reactor contained vulcanic stone to increase spesific surface of media for attachment of bacteria.Bacteria consortia used for anaerobic process consist of Aeromonas sp. (ML6), Aeromonas sp. (ML14), Aeromonas sp. 9ML24), Pseudomonas sp. (ML8) and Flavobacterium sp. (ML20). Whereas, bacteria consortia for aerobic process consist of Plesiomonas sp. (SB1), Plesiomonas sp. (SB2), Vibrio sp.(SB1), Vibrio sp. (SB2) and Vibrio sp. (SB3). The system was operated for 3 day in each reactor. The result showed, biodegradation of textile waste water in combined anaerobic-aerobic system by attached growth process is potential for treatment of textile waste water.This technology is effective to decrease COD value up to 98.38%, BODS 93.90%, TDS 80.87%, TSS 87.50% and decolorization of textile dyes up to 95.57%.
KAJIAN FEKUNDITAS DAN DAYA TETAS TELUR IKAN BETUTU (Oxyeleotris marmorata) PADA WAD AH PEMIJAHAN YANG BERBEDA Karyaningsih, Sri
BERITA BIOLOGI Vol 9, No 2 (2008)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (816.416 KB) | DOI: 10.14203/beritabiologi.v9i2.2025

Abstract

Assessment of fecundity and hatching rate of betutu fish - sand goby {Oxyeleotris marmorata) eggs has been done at the station rearing center in Ngrajek, Magelang Regency, Central Java. The fecundity and hatching rate of sand goby eggs can be used as measuring rod of fry. The result showed that the fecundity of rearing in fiber pond between 4.700 to 10.250 eggs with the hatching rate are 41.44% to 85.06%. The rearing in concrete pond between 5.400 tol4.000 eggs with the hatching rate are 43.20% to 90.00%. Statistical test on relationship indicates that no significant for fecundity and hatching rate about the rearing on different case. The relationship between the fecundity with the body length and the body weight is significant. The fecundity and hatching rate was under the influence of ovary weight, diet and hatchery environment.
PERKECAMBAHAN DAN VIGOR SEMAI Picrasma javanica Blume PADA BERB AGAI SUHU Sutarno, Hadi; Utami, Ning Wikan
BERITA BIOLOGI Vol 9, No 2 (2008)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (850.907 KB) | DOI: 10.14203/beritabiologi.v9i2.2030

Abstract

The successfull cultivation of useful plant largely depends on the quality of seeds, especially viability and germination vigor. Seed of Picrasma javanica Blume has potential use in the development of templates for new drugs, e. g. to treat malaria.For most species there is still little or no information about the suitable temperature regime for germination and seedling depelopment,therefore,it is interesting to study germination and seedling vigor of Picrasma javanica. The mature green were picked and cleaned before using for experiments.Germination was carried out in 24 compartments of a thermogradientbar apparatus.The temperature gradient extends from 4.8 to 41.6°C with 1.6°C steps from the first to the 24 th compartment. Twenty seeds were germinated in each compartment. Seeds were sown on 2 layers of filter-paper strips.Everyday for 77 days during germination the germinating seeds were recorded.For hilling experiments those seeds from compartment number 3 to number 13 of thermogradientbar apparatus were than removed to incubator 32°C for 28 days. On the seedling vigor, all germinating seed from incubator were removed for replanting in growth room with sand medium. The seedling establishment capacity in the different thermal regions can thus be identified. The results showed that seeds attained 50% germination after 43 days when placed at the gradientbar 22.4°C to 41.6°C with optimum temperature 36.8°C. A 28 days temperatuture pretreatment ranging gradually from 4.8°C up to 20.8°C has promoted germination significantly. Mechanism of pretreatment on low and high temperature was discussed.
OPTIMASI PRODUKSI FRUCTOSYLTRANSFERASE OLEH Aspergillw sp. WNIC Toharisman, Aris; Triantarti, Triantarti; Marantesa, Hendro Santoso
BERITA BIOLOGI Vol 9, No 2 (2008)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (975.291 KB) | DOI: 10.14203/beritabiologi.v9i2.2022

Abstract

Fructo Oligo Saccharides (FOS) are considered as biologically benefit, have been developed recently to be used as functional factors in healthy foods.FOS shows low cariogenicity, nondigestibility and proliferation of bifidobacteria in human intestinal tract and dietary fiberlike action. The aim of this research is to produce FOS from sucrose by using fructocyltransferase (FT-ase) from Aspergillus sp. Research on the production of FOS was the optimization of FT-ase production. Inoculum of selected Aspergillus was added into medium with various composition and incubation conditions. Enzyme solution was mixed with sucrose and incubated at various times, pHs, temperatures and agitations.The best parameter condition was based on the highest FT-ase activity. The results showed that production of FT-ase was affected by fermentation time, pH and incubation temperature. The carbon source tested permitted good growth and enzyme production where sucrose supported rather good enzyme production.It was obvious that enzyme production was not closely correlated with cell growth.The best fructo-oligosaccharide yield (20.53%) was achieved when 20 g/100 ml sucrose was utilized. Yeast extract was good nitrogen source for enzyme production. The best FT-ase activity was achieved when 1.2 g/100 ml yeast extract was utilized. Addition of mineral salt also enhanced enzyme production where 1 g/l magnesium salt gave the best cell growth and enzyme production.
PENGARUH MEDIA TUMBUH TERHADAP PERKECAMBAHAN BIJI TANAMAN "LO"{Ficus racemoca L. var. elongata (King) Barrer} Solikin, Solikin
BERITA BIOLOGI Vol 9, No 2 (2008)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (655.68 KB) | DOI: 10.14203/beritabiologi.v9i2.2032

Abstract

Tanaman "lo" (Ficus racemosa L.) termasuk suku Moraceae yang berpotensi sebagai tanaman buah dan obat. Beberapa bagian tanaman lo telah dimanfaatkan penduduk, seperti buahnya dapat dimakan, daunnya berguna untuk pengobatan diare (Anonim, 1995); ekstrak kulit kayu dilaporkan dapat untuk aglutinasi sel-sel darah putih pada penderita leukimia((Rojo et al., 1999).

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