Supriyati, Dyah
Perhimpunan Biologi Indonesia

Published : 2 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 2 Documents
Search

Biodegradasi Phenantrene oleh Mikroba Laut M5 (Alcanivorax Borkumensis) yang Diisolasi dari Teluk Jakarta Supriyati, Dyah
JURNAL BIOLOGI INDONESIA Vol 6, No 1 (2009): JURNAL BIOLOGI INDONESIA
Publisher : Perhimpunan Biologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (58.954 KB) | DOI: 10.14203/jbi.v6i1.3178

Abstract

ABSTRACTBiodiversity of Phenanthrene by Alcanivorak borkumensis M5 Isolated from Teluk Jakarta.Phenantrene is one of the most persistent organic substances in environment. AlcanivoraxBorkumensis M5 was isolated from sea water, and able to degrade phenantrene after 5 hours.About 75 % of phenantrene was degraded after 12 hours. This isolate grew optimum at 300C,pH 7.8 with a doubling time of 14.5 hours and specific growth rate of 0.0476/hour.Polyhydroxybutirate (PHB) was produced during culture growth, but the synthesis wasinversely correlated with the cell growth. The relation between PHB synthesis and phenantrenedegradation is due required further investigation.Keywords: Phenanthrene, degradation ,bacteriaKata kunci: Phenantren, degradasi, bakteri
Pengaruh Sumber N terhadap Degradasi Deltametrin dan Produksi IAA oleh Pseudomonas sp. PIV-8-2 Supriyati, Dyah
JURNAL BIOLOGI INDONESIA Vol 11, No 1 (2015): JURNAL BIOLOGI INDONESIA
Publisher : Perhimpunan Biologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2114.019 KB) | DOI: 10.14203/jbi.v11i1.2166

Abstract

Deltamethrin is an active ingredient of insecticides such as decis, and its common pollutant observe in agricultural soil.  Microbes that able to degrade deltamethrine and produced IAA as plant growth promoting hormone is important to support organic agriculture. The aim of this study was to find deltamethrin degrading bacteria capable of producing IAA and to evaluate  the effect of nitrogen on degradation rate of deltametrin and IAA production. Deltametrin degrading  Bacteria was  isolated from non-organic rice fields around Cibinong Science Center. Deltamethrin degradation ability was evaluated in NMS medium with the addition of a nitrogen source: yeast extract, urea and NPK. Analyses of 16S rDNA showed that deltamethrin degrading bacteria and producing IAA was identified as Pseudomonas sp. PIV-8-2. Nitrogen siginificantly affect the degradation deltametrin rate, but not on  IAA production. Only on the addition of yeast extract and urea significanly  affect to IAA production after 2 days incubation.Keywords: Deltamethrin Degradation, IAA, Pseudomonas sp. PIV-8-2, Farming.