Multi-sensor measurement of O2, CO2 and reheating in triticale silage: An extended approach from aerobic stability to aerobic microbial respiration
Autor: | David A. Grantz, Hauke F. Deeken, Wolfgang Buescher, Ye Wang, Christian Maack, Gereon Glenz, Yurui Sun, Guilin Shan, Andreas Milimonka |
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Rok vydání: | 2021 |
Předmět: |
Microbial respiration
Silage 010401 analytical chemistry Soil Science chemistry.chemical_element 04 agricultural and veterinary sciences Triticale 01 natural sciences Oxygen 0104 chemical sciences Multi sensor chemistry.chemical_compound chemistry Control and Systems Engineering Carbon dioxide 040103 agronomy & agriculture 0401 agriculture forestry and fisheries Dry matter Food science Agronomy and Crop Science Anaerobic exercise Food Science |
Zdroj: | Biosystems Engineering. 207:1-11 |
ISSN: | 1537-5110 |
Popis: | The biochemical reactions of aerobic microbial respiration (AMR) suggest that silage temperature (Tsi) rise, oxygen (O2) consumption and carbon dioxide (CO2) emission may be equally useful as indicators of silage deterioration during feed-out, but only temperature has been used extensively to assess aerobic stability. Here we extend the study of aerobic stability to incorporate AMR of silage by developing a novel experimental cell integrated with multiple sensors. Silage samples, ensiled from a triticale crop, were made in twelve air-tight barrels (60 L), packed to bulk densities of 190 or 250 kg m−3 dry matter (DM). Tsi and O2 measurements were co-located at 15- and 30-cm behind the working face. CO2 was measured as flux across the working face. The experimental period of aerobic exposure was 7 days. We provide the first reports of: (i) distinct aerobic responses of these parameters, showing that Tsi varied with CO2 in phase but with O2 out-of phase; (ii) CO2 flux was dominated initially by anaerobic discharge and subsequently by aerobic products; (iii) linear relationships between aerobic reheating and both O2 consumption (0.994 ≥ R2 ≥ 0.815, P |
Databáze: | OpenAIRE |
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