Halophilic bacterium JAS4 in biomineralisation of endosulfan and its metabolites isolated from Gossypium herbaceum rhizosphere soil

Silambarasan, Sivagnanam; Abraham, Jayanthi

doi:10.1016/j.jtice.2014.01.013

Cited by 12 publications

(2 citation statements)

References 23 publications

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“…Low cost powder bioformulation of strain AJAG1 was prepared according to the method described by Silambarasan and Abraham (2014). In this method, fly ash was used as carrier material for immobilization of strain AJAG1.…”

Section: Preparation Of Low Cost Powder Bioformulationmentioning

confidence: 99%

Biomineralisation of fipronil and its major metabolite, fipronil sulfone, by Aspergillus glaucus strain AJAG1 with enzymes studies and bioformulation

Gajendiran

Abraham

2017

3 Biotech

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Fipronil is a phenylpryazole insecticide which is extensively used for the protection of agricultural yields. However, this insecticide poses various threats to the environment. Therefore it is essential to develop an effective method to degrade or eliminate this pollutant from the environment. In this present study, a fungal strain AJAG1 capable of degrading fipronil and its metabolite, fipronil sulfone, was isolated through enrichment technique. Isolated fungal strain was identified as Aspergillus glaucus based upon its morphological, and 18S rRNA sequence analysis. Strain AJAG1 could degrade 900 mg L of fipronil efficiently in both aqueous medium and soil. In addition, fipronil degradation was tested with various kinetic models and the results revealed that biodegradation in aqueous medium and soil was ascertained by pseudo-first order and zero order rate kinetics, respectively. The infrared spectrum of fipronil degraded sample confirmed the formation of esters, nitro, and alkanes groups. A tentative degradation pathway of fipronil by strain AJAG1 has been proposed on the basis of gas chromatography-mass spectrometry (GC-MS) analysis. The lignolytic enzymes activities were studied during fipronil degradation by strain AJAG1. Further, scanning electron microscopy (SEM) was used to examine the surface morphology of strain AJAG1 after fipronil degradation. In the present investigation, bioformulation of strain AJAG1 was developed using low cost materials such as groundnut shell powder, molasses, and fly ash to remediate the fipronil from agricultural field. These results highlight A. glaucus strain AJAG1 may have potential for use in bioremediation of fipronil-contaminated environment.

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Section: Preparation Of Low Cost Powder Bioformulationmentioning

confidence: 99%

Biomineralisation of fipronil and its major metabolite, fipronil sulfone, by Aspergillus glaucus strain AJAG1 with enzymes studies and bioformulation

Gajendiran

Abraham

2017

3 Biotech

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“…Low cost powder formulations of JAS2 strain was prepared according to the method of Silambarasan and Abraham [25]. Briefly the formulation consisted of saw dust-soil-5% molasses in a ratio of 15:5:1 and saw dust-soil-nutrients in a ratio of 15:5:1 with a carrier material such as fly ash for immobilization of bacterial strain.…”

Section: Preparation Of Low Cost Powder Formulationsmentioning

confidence: 99%