Effect of additions on ensiling and microbial community of senesced wheat straw
| Autor: | Joni M. Barnes, Tracy P. Houghton, David N. Thompson |
|---|---|
| Rok vydání: | 2005 |
| Předmět: |
Crop residue
Aging Conservation of Natural Resources Silage Industrial Waste Bioengineering Applied Microbiology and Biotechnology Biochemistry chemistry.chemical_compound Hemicellulose Cellulose Sugar Molecular Biology Water content Moisture food and beverages Water General Medicine Straw Plant Components Aerial Lactobacillus chemistry Agronomy Biotechnology |
| Zdroj: | Applied biochemistry and biotechnology. |
| ISSN: | 0273-2289 |
| Popis: | Crop residues collected during or after grain harvest are available once per year and must be stored for extended periods. The combination of air, high moisture, and high microbial loads leads to shrinkage during storage and risk of spontaneous ignition. Ensiling is a wet preservation method that could be used to store these residues stably. To economically adapt ensiling to biomass that is harvested after it has senesced, the need for nutrient, moisture, and microbial additions must be determined. We tested the ensiling of senesced wheat straw in sealed columns for 83 d. The straw was inoculated with Lactobacillus plantarum and amended with several levels of water and free sugars. The ability to stabilize the straw polysaccharides was strongly influenced by both moisture and free sugars. Without the addition of sugar, the pH increased from 5.2 to as much as 9.1, depending on moisture level, and losses of 22% of the cellulose and 21% of the hemicellulose were observed. By contrast, when sufficient sugars were added and interstitial water was maintained, a final pH of 4.0 was attainable, with correspondingly low ( |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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