Fungal treatment of lignocellulosic biomass: Importance of fungal species, colonization and time on chemical composition and in vitro rumen degradability

Kuijk, Sandra van; Sonnenberg, A.S.M.; Baars, J.J.P.; Hendriks, W.H.; Cone, J.W.

doi:10.1016/j.anifeedsci.2015.07.026

Cited by 74 publications

(87 citation statements)

References 38 publications

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“…The cell wall contents of wheat straw, with and without fungal pretreatment after 7 weeks are provided in Table . For the untreated wheat straw (control), the cell wall contents were in the range of previously reported values (on a DM basis, w / w ) for cellulose (46–50%), hemicellulose (26–31%) and ADL (7–9%) (Method A) . Similarly, the cell wall contents determined in Method B were comparable to previous reports on cellulose (34–43%) and hemicellulose (26–35%) .…”

Section: Resultssupporting

confidence: 86%

“…Method B, however, suggests a lesser degradation of hemicellulose (determined as GAX), i.e. both polymers are not simultaneously degraded by fungi (at a comparable magnitude), as commonly reported in the literature . The fragmented lignin may also contain intact hemicellulose polymers, especially xylan, which explains the strong correlation in Method A (simultaneous ‘degradation’ of ADL and hemicellulose).…”

Section: Resultsmentioning

confidence: 99%

“…The in vitro gas production (IVGP) is a robust and effective technique to assess in vitro digestibility of substrates in the rumen . It has been widely used in feed evaluation studies, including assessment of fungal‐treated agricultural biomasses . Recently, we have screened for high potential strains of C. subvermispora , P. eryngii and L. edodes , based on their abilities to improve IVGP of wheat straw .…”

Section: Introductionmentioning

confidence: 99%

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Evaluation of fungal degradation of wheat straw cell wall using different analytical methods from ruminant nutrition perspective

et al. 2019

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BACKGROUND White rot fungi have been used to improve the nutritive value of lignocellulose for ruminants. In feed analysis, the Van Soest method is widely used to determine the cell wall contents. To assess the reliability of this method (Method A) for determination of cell wall contents in fungal‐treated wheat straw, we compared a combined monosaccharide analysis and pyrolysis coupled to gas chromatography with mass spectrometry (Py‐GC/MS) (Method B). Ruminal digestibility, measured as in vitro gas production (IVGP), was subsequently used to examine which method explains best the effect of fungal pretreatment on the digestibility of wheat straw. RESULTS Both methods differed considerably in the mass recoveries of the individual cell wall components, which changed on how we assess their degradation characteristics. For example, Method B gave a higher degradation of lignin (61.9%), as compared to Method A (33.2%). Method A, however, showed a better correlation of IVGP with the ratio of lignin to total structural carbohydrates, as compared to Method B (Pearson's r of −0.84 versus −0.69). Nevertheless, Method B provides a more accurate quantification of lignin, reflecting its actual modification and degradation. With the information on the lignin structural features, Method B presents a substantial advantage in understanding the underlying mechanisms of lignin breakdown. Both methods, however, could not accurately quantify the cellulose contents – among others, due to interference of fungal biomass. CONCLUSION Method A only accounts for the recalcitrant residue and therefore is more suitable for evaluating ruminal digestibility. Method B allows a more accurate quantification of cell wall, required to understand and better explains the actual modification of the cell wall. The suitability of both methods, therefore, depends on their intended purposes. © 2019 The Authors. Journal of The Science of Food and Agriculture published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.

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Section: Resultssupporting

confidence: 86%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Evaluation of fungal degradation of wheat straw cell wall using different analytical methods from ruminant nutrition perspective

et al. 2019

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“…Spawn was made as described by Van Kuijk et al, (2015). Organic wheat straw was chopped and soaked in tap water for 3 days and then drained for 5-h.…”

Section: Methodsmentioning

confidence: 99%

Proceedings of the 10th International Symposium on the Nutrition of Herbivores

Giger-Reverdin¹,

Sauvant²

2018

Advances in Animal Biosciences

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“…Crop residues and agro-industrial by-products include a high number of materials of which straw of cereals, stover from maize and sorghum, corn cobs and bagasse. These feeds are often rich in carbohydrates in the form of cellulose and hemicellulose (Owen and Jayasuriya, 1989;Van Kuijk et al, 2015). The use of cereal straw for ruminant feed has been known classically for its poor nutritive value; low energy and N content, low intake (Madrid et al 1997) and low in digestibility; therefore animal production is low (Van Soest, 2006).…”

Section: Introductionmentioning

confidence: 99%

Agricultural by-Products as Feed for Ruminants in Tropical Area: Nutritive Value and Mitigating Methane Emission

Yanti

Yayota

2017

RAS

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Fungal treatment of lignocellulosic biomass: Importance of fungal species, colonization and time on chemical composition and in vitro rumen degradability

Cited by 74 publications

References 38 publications

Evaluation of fungal degradation of wheat straw cell wall using different analytical methods from ruminant nutrition perspective

Evaluation of fungal degradation of wheat straw cell wall using different analytical methods from ruminant nutrition perspective

Proceedings of the 10th International Symposium on the Nutrition of Herbivores

Agricultural by-Products as Feed for Ruminants in Tropical Area: Nutritive Value and Mitigating Methane Emission

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