Growth and Influence of White-Rot Fungi on the Chemical Composition of Wheat Straw Inoculated under Varying Pre-Conditions
Solid-state fermentation with white-rot fungi is an interesting alternative to chemical straw treatment for ruminant nutrition. However, for practical implementation on farms, feasible handling and its effect on nutritional characteristics have to be tested beforehand. Chopped wheat straw was either...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-11-01
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| Series: | Fermentation |
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| Online Access: | https://www.mdpi.com/2311-5637/8/12/695 |
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| author | Siriwan D. Martens Vicki Wildner Jörg M. Greef Annette Zeyner Olaf Steinhöfel |
| author_facet | Siriwan D. Martens Vicki Wildner Jörg M. Greef Annette Zeyner Olaf Steinhöfel |
| author_sort | Siriwan D. Martens |
| collection | DOAJ |
| description | Solid-state fermentation with white-rot fungi is an interesting alternative to chemical straw treatment for ruminant nutrition. However, for practical implementation on farms, feasible handling and its effect on nutritional characteristics have to be tested beforehand. Chopped wheat straw was either soaked and drained or just remoistened to about 24% dry matter without subsequent sterilization. Moist straw was inoculated with <i>Pleurotus ostreatus</i>, <i>Ceriporiopsis subvermispora</i>, or <i>Volvariella volvacea</i>. Fermentation lasted up to 42 d with weekly or shorter sampling intervals. Fiber fractions, minerals and elements, and non-starch polysaccharides were analyzed, and microflora was plate counted. Lactic acid bacteria of selected samples were identified by MALDI-TOF. All inoculated fungi grew well under the selected conditions expressed by the visible mycelium and specific smell. <i>P. ostreatus</i> developed fruiting bodies in the given time. Initial numbers of lactic acid bacteria were >8.0 log cfu/g. In the beginning, <i>Weissella confusa</i>/<i>cibaria</i> dominated. However, neither decrease in lignin nor cellulose concentration was observed during the period in either of the treatments, thus seeming to be inappropriate for ruminant nutrition purposes. Some elements and minerals peaked, especially towards the second and third week (Na, Cl, Mg, Fe, and Mn). Growth conditions for mushrooms were optimized by remoistening the straw with a defined amount of water. |
| first_indexed | 2024-03-09T16:46:35Z |
| format | Article |
| id | doaj.art-07b54f88a7d14aa785da313d9ecdc158 |
| institution | Directory Open Access Journal |
| issn | 2311-5637 |
| language | English |
| last_indexed | 2024-03-09T16:46:35Z |
| publishDate | 2022-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Fermentation |
| spelling | doaj.art-07b54f88a7d14aa785da313d9ecdc1582023-11-24T14:45:12ZengMDPI AGFermentation2311-56372022-11-0181269510.3390/fermentation8120695Growth and Influence of White-Rot Fungi on the Chemical Composition of Wheat Straw Inoculated under Varying Pre-ConditionsSiriwan D. Martens0Vicki Wildner1Jörg M. Greef2Annette Zeyner3Olaf Steinhöfel4Department of Animal Husbandry, Saxon State Office for Environment, Agriculture and Geology (LfULG), 04886 Köllitsch, GermanyDepartment of Animal Husbandry, Saxon State Office for Environment, Agriculture and Geology (LfULG), 04886 Köllitsch, GermanyInstitute for Crop and Soil Science, Julius Kühn Institut (JKI), 38116 Braunschweig, GermanyProfessorship of Animal Nutrition, Martin-Luther-University Halle-Wittenberg, 06120 Halle, GermanyDepartment of Animal Husbandry, Saxon State Office for Environment, Agriculture and Geology (LfULG), 04886 Köllitsch, GermanySolid-state fermentation with white-rot fungi is an interesting alternative to chemical straw treatment for ruminant nutrition. However, for practical implementation on farms, feasible handling and its effect on nutritional characteristics have to be tested beforehand. Chopped wheat straw was either soaked and drained or just remoistened to about 24% dry matter without subsequent sterilization. Moist straw was inoculated with <i>Pleurotus ostreatus</i>, <i>Ceriporiopsis subvermispora</i>, or <i>Volvariella volvacea</i>. Fermentation lasted up to 42 d with weekly or shorter sampling intervals. Fiber fractions, minerals and elements, and non-starch polysaccharides were analyzed, and microflora was plate counted. Lactic acid bacteria of selected samples were identified by MALDI-TOF. All inoculated fungi grew well under the selected conditions expressed by the visible mycelium and specific smell. <i>P. ostreatus</i> developed fruiting bodies in the given time. Initial numbers of lactic acid bacteria were >8.0 log cfu/g. In the beginning, <i>Weissella confusa</i>/<i>cibaria</i> dominated. However, neither decrease in lignin nor cellulose concentration was observed during the period in either of the treatments, thus seeming to be inappropriate for ruminant nutrition purposes. Some elements and minerals peaked, especially towards the second and third week (Na, Cl, Mg, Fe, and Mn). Growth conditions for mushrooms were optimized by remoistening the straw with a defined amount of water.https://www.mdpi.com/2311-5637/8/12/695solid state fermentationfungal growthergosterolpHnatural microfloracell wall polysaccharides |
| spellingShingle | Siriwan D. Martens Vicki Wildner Jörg M. Greef Annette Zeyner Olaf Steinhöfel Growth and Influence of White-Rot Fungi on the Chemical Composition of Wheat Straw Inoculated under Varying Pre-Conditions Fermentation solid state fermentation fungal growth ergosterol pH natural microflora cell wall polysaccharides |
| title | Growth and Influence of White-Rot Fungi on the Chemical Composition of Wheat Straw Inoculated under Varying Pre-Conditions |
| title_full | Growth and Influence of White-Rot Fungi on the Chemical Composition of Wheat Straw Inoculated under Varying Pre-Conditions |
| title_fullStr | Growth and Influence of White-Rot Fungi on the Chemical Composition of Wheat Straw Inoculated under Varying Pre-Conditions |
| title_full_unstemmed | Growth and Influence of White-Rot Fungi on the Chemical Composition of Wheat Straw Inoculated under Varying Pre-Conditions |
| title_short | Growth and Influence of White-Rot Fungi on the Chemical Composition of Wheat Straw Inoculated under Varying Pre-Conditions |
| title_sort | growth and influence of white rot fungi on the chemical composition of wheat straw inoculated under varying pre conditions |
| topic | solid state fermentation fungal growth ergosterol pH natural microflora cell wall polysaccharides |
| url | https://www.mdpi.com/2311-5637/8/12/695 |
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