0000000000662084

AUTHOR

Tarja Nakari

showing 2 related works from this author

Biological effects of high molecular weight lignin derivatives

2010

Abstract A number of high molecular weight (HMW) lignin derivatives possessing varied chemical properties were screened for their biological effects in order to obtain more information on the possible structural features of HMW lignin-related effects. The studied compounds were both commercial and in-house extracted lignin derivatives. Bioassays used include reverse electron transport (RET), Vibrio fischeri, Daphnia magna , and juvenile rainbow trout ( Oncorhynchus mykiss) hepatocytes. The studied lignin derivatives inhibited the in vitro systems and luminescence of V. fischeri bacteria to some extent–daphnids were not affected. It seems that, at least in the RET assay, certain pH-dependent…

Paperendocrine systemHealth Toxicology and MutagenesisDaphnia magnaLigninWaste Disposal Fluidcomplex mixturesMicrobiologyElectron Transportchemistry.chemical_compoundToxicity TestsCytochrome P-450 CYP1A1AnimalsLigninBioassayFinlandVibriobiologyfungitechnology industry and agriculturePublic Health Environmental and Occupational Healthfood and beveragesBiological activityGeneral Medicinebiology.organism_classificationPollutionIn vitroVibrioReverse electron flowDaphniachemistryBiochemistryOncorhynchus mykissHepatocytesBiological AssayWater Pollutants ChemicalBacteriaEcotoxicology and Environmental Safety
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Evaluation of biodegradation of nonylphenol ethoxylate and lignin by combining toxicity assessment and chemical characterization.

2009

Abstract The aerobic biodegradation of commercial nonylphenol ethoxylate (NPE) mixture and alkali lignin was studied using the OECD headspace test accompanied by the simultaneous measurement of ecotoxicity directly from the biodegradation liquors and by the follow-up of the chemical composition of the studied chemicals. NPE degradation was dependent on the inoculum source: approximately 40% of NPE was mineralized into CO2 during the 4-week experiment when inoculum from Helsinki City wastewater treatment plant (WWTP) was used, and only 12% was mineralized when inoculum from Jyvaskyla City WWTP was used. Chemical analyses revealed a shift in the ethoxylate chain length from longer to shorter …

Environmental EngineeringHealth Toxicology and MutagenesisEcotoxicologyLigninElectron Transportchemistry.chemical_compoundEnvironmental ChemistryEcotoxicologyLigninWater pollutionPublic Health Environmental and Occupational Healthfood and beveragesEstrogensGeneral MedicineGeneral ChemistryBiodegradationPollutionBiodegradation EnvironmentalchemistryWastewaterEnvironmental chemistryToxicitySewage treatmentBiological AssayEthylene GlycolsEcotoxicityWater Pollutants ChemicalChemosphere
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