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Seasonal variation in the chemical composition and carbohydrate signature compounds of biofilm

DRS at CSIR-National Institute of Oceanography

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Title Seasonal variation in the chemical composition and carbohydrate signature compounds of biofilm
 
Creator DeSouza, F.P.
Garg, A.
Bhosle, N.B.
 
Subject biofilms
chemical composition
seasonal variations
stainless steel
biomarkers
organic matter
carbohydrates
biomass
corrosion control
 
Description Biofilm developed on stainless steel was characterised using biological, chemical and biochemical parameters, as well as aldose molecular biomarkers. Biofilm biomass and carbohydrate concentration increased on stainless steel, whereas C:N and organic carbon:chlorophyll a ratios decreased over the period of immersion. Despite the abundance of microalgal biomass, carbohydrate concentration was lower than that observed for proteins. Carbohydrate composition varied during the period of immersion. Glucose, arabinose and xylose were relatively more abundant during the initial period (5 d) of immersion, whereas rhamnose, fucose, ribose and galactose were more abundant during the latter period (greater than 5 d) of immersion. The sugar distribution trends suggest that biofilm carbohydrates were mostly derived from degraded biogenic and/or terrestrial sources, especially during the initial period (is less than 5 d) of immersion. As the period of immersion increased, the contribution of biogenic sources to the biofilm carbohydrates increased. This conclusion was also supported by principal component analysis based on wt % aldose composition. Multi-parameter approaches such as the one used in the present study provide a better picture of the sources and nature of biofilm organic matter
 
Date 2008-02-22T06:23:50Z
2008-02-22T06:23:50Z
2005
 
Type Journal Article
 
Identifier Aquatic microbial ecology, Vol.41; 199-207p.
http://drs.nio.org/drs/handle/2264/1010
 
Language en
 
Rights Copyright [2005]. It is tried to respect the rights of the copyright holders to the best of the knowledge. If it is brought to our notice by copyright holder that the rights are voilated then the item would be withdrawn.
 
Publisher Inter Research