6533b833fe1ef96bd129c148
RESEARCH PRODUCT
Concentrations of monosaccharides in humic substances in the early stages of humification.
Kari HänninenNiina Koivulasubject
Environmental EngineeringHealth Toxicology and Mutagenesisengineering.materialcomplex mixturesLiquid packaging boardProduct PackagingEnvironmental ChemistryHumic acidMonosaccharideOrganic matterFood scienceCelluloseHumic Substanceschemistry.chemical_classificationChromatographyChemistryCompostMonosaccharidesPublic Health Environmental and Occupational HealthTemperatureWaterGeneral MedicineGeneral ChemistryBiodegradationPollutionHumusRefuse DisposalengineeringHumindescription
Deteriorated liquid packaging board (LPB) and biowaste compost are matrices, mainly consisting of cellulose, in the early stages of humification. Degradative studies on these matrices allow an examination of the role of carbohydrates in the synthesis of humic substances. Samples of different age were collected and divided by extraction into hot water extract (HWE), bitumen, humic acid (HA), fulvic acid (FA) and humin or residual fibre fractions. The following monosaccharides were identified in these fractions: L-arabinose, D-ribose, D-xylose, L-fucose, D-mannose, D-fructose, D-galactose, D-glucose, L-rhamnose and xylitol. The main component in all fractions was glucose. The concentrations of monosaccharides in humic acids (HAs) of LPB ranged from 67 to 503 mg/g of organic matter, and the concentrations in HAs of compost from 52 to 101 mg/g. As a general trend, the concentrations of monosaccharides decreased during LPB degradation and composting in all fractions. At the same time the relative amounts of D-xylose, D-mannose and D-galactose increased in HAs of compost samples.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2001-07-11 | Chemosphere |