CO2 production, dissolution and pressure dynamics during silage production: multi-sensor-based insight into parameter interactions

Silage is a critical global feedstock, but is prone to aerobic deterioration. The dominant mechanism of O 2 transport into silage remains unresolved. Here, multiple sensors tracked O 2 and CO 2 , gas pressure ( ΔP ) between internal silage and ambient air, pH and silage temperature (T si ) during th...

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Bibliographic Details
Published in:Scientific reports 2017-11, Vol.7 (1), p.1-9, Article 14721
Main Authors: Li, Menghua, Shan, Guilin, Zhou, Haiyang, Buescher, Wolfgang, Maack, Christian, Jungbluth, Kerstin H., Lipski, André, Grantz, David A., Fan, Youheng, Ma, Daokun, Wang, Zhongyi, Cheng, Qiang, Sun, Yurui
Format: Article
Language:English
Subjects:
639/638/11/511
639/638/898
9/10
Acids
Air temperature
Bacteria
Carbon dioxide
Dissolution
Fermentation
Humanities and Social Sciences
Microbial activity
Microorganisms
multidisciplinary
pH effects
Pressure
Respiratory quotient
Science
Science (multidisciplinary)
Sensors
Silage
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Summary:Silage is a critical global feedstock, but is prone to aerobic deterioration. The dominant mechanism of O 2 transport into silage remains unresolved. Here, multiple sensors tracked O 2 and CO 2 , gas pressure ( ΔP ) between internal silage and ambient air, pH and silage temperature (T si ) during the ensilage of maize and ryegrass. We report the first observation that CO 2 produced from microbial respiration was partially dissolved in silage water, with evidence of negative or positive ΔP depending on the changing balance between CO 2 production and dissolution. The ΔP  
ISSN:2045-2322
2045-2322
DOI:10.1038/s41598-017-14187-1