Engineering soil organic matter quality: Biodiesel Co-Product (BCP) stimulates exudation of nitrogenous microbial biopolymers.

ABSTRACT: Biodiesel Co-Product (BCP) is a complex organic material formed during the transesterification of lipids. We investigated the effect of BCP on the extracellular microbial matrix or 'extracellular polymeric substance' (EPS) in soil which is suspected to be a highly influential fraction of soil organic matter (SOM). It was hypothesised that more N would be transferred to EPS in soil given BCP compared to soil given glycerol. An arable soil was amended with BCP produced from either 1) waste vegetable oils or 2) pure oilseed rape oil, and compared with soil amended with 99% pure glycerol; all were provided with ¹⁵N labelled KNO₃. We compared transfer of microbially assimilated ¹⁵N into the extracellular amino acid pool, and measured concomitant production of ex

SUBMITTER: Redmile-Gordon MA 

PROVIDER: S-EPMC4550076 | biostudies-literature | 2015 Dec

REPOSITORIES: biostudies-literature