2021
DOI: 10.15376/biores.16.1.1940-1948
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Reduction in lignin peroxidase activity revealed by effects of lignin content in urea crosslinked starch under aerobic biodegradation in soil

Abstract: This study characterized the lignin peroxidase (LiP) activity of soil via an enzyme assay to determine the reaction rates and activation energies for 5 wt%, 10 wt%, 15 wt%, and 20 wt% lignin loads in urea crosslinked starch biocomposites. The results revealed that a mixed mode of LiP inhibition occurred after the soil was mixed with these biocomposites with different loads of lignin. Loading of lignin at 5 wt% and 10 wt% lignin resulted in higher values of catalytic activity of LiP: -39.58 and 49.14 µM h-1 g-1… Show more

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“…S4). However, unlike the AS-to-SOC ratio, the lignin-to-SOC ratio was not correlated with the activity of PER, which has been reported to be responsible for lignin degradation (Datta et al, 2017;Majeed et al, 2021). This suggests that the contribution of stable carbon pool origin from plant residues was not controlled by microbial activity.…”
Section: Discussionmentioning
confidence: 75%
“…S4). However, unlike the AS-to-SOC ratio, the lignin-to-SOC ratio was not correlated with the activity of PER, which has been reported to be responsible for lignin degradation (Datta et al, 2017;Majeed et al, 2021). This suggests that the contribution of stable carbon pool origin from plant residues was not controlled by microbial activity.…”
Section: Discussionmentioning
confidence: 75%