Effects of cell wall phenolics and fungal metabolites on methane and acetate production under in vitro rumen conditions.
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- ASIEGBU FREDERICK O.
- Department of Bioscience and Biotechnology, University of Strathclyde Department of Forest Mycology and Pathology, Swedish University of Agricultural Sciences
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- PATERSON ALISTAIR
- Department of Bioscience and Biotechnology, University of Strathclyde
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- MORRISON IAN M.
- Scottish Crop Research Institut
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- SMITH JOHN E.
- Department of Bioscience and Biotechnology, University of Strathclyde
抄録
The effects of cell wall phenolics, lignins and fungal metabolites on end products of simulated rumen fermentations were studied. Monomeric phenolics, selected to represent the products of aerobic oxidation of lignin by fungi, slightly enhanced carbon dioxide output at low concentrations (0.05%) but had no stimulatory effect on acetate production. Higher concentrations (0.5%) of industrial and Klason lignin decreased carbon dioxide, methane, acetate and propionate production. Secondary metabolites from toxigenic strains of Aspergillus flavus, which were used to simulate the presence of contaminated feedstuff arising from non-sterile fungal bioconversion systems (fermentations), stimulated carbon dioxide, methane, acetate and propionate production but not when extracts were boiled or autoclaved. Acetate, propionate, methane and carbon dioxide production were only slightly reduced in the presence of purified aflatoxin. With spruce sawdusts pretreated with fungi, it was found that accumulation of soluble compounds from lignin and polysaccharide depolymerisations in rumen simulations were markedly higher with sawdusts pretreated with fungi under non-sterile conditions. It was concluded that fungal pretreatment of lignocellulosic substrates had no adverse effects on the end products of rumen fermentations.
収録刊行物
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- The Journal of General and Applied Microbiology
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The Journal of General and Applied Microbiology 41 (6), 475-485, 1995
公益財団法人 応用微生物学・分子細胞生物学研究奨励会
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詳細情報 詳細情報について
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- CRID
- 1390001204141370752
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- NII論文ID
- 130003458624
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- COI
- 1:CAS:528:DyaK28XhtlSis7g%3D
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- ISSN
- 13498037
- 00221260
- http://id.crossref.org/issn/00221260
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可