Assessing the nutritional quality of fungal treated wheat straw: Compounds formed after treatment with Ceriporiopsis subvermispora and Lentinula edodes

Mao, Lei; Arkel, Jeroen van; Hendriks, W.H.; Cone, J.W.; Vos, Ric C. H. de; Sonnenberg, A.S.M.

doi:10.1016/j.anifeedsci.2021.114924

Cited by 10 publications

(9 citation statements)

References 48 publications

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“…Hemi-cellulose fractions, which are composed of linear chains of 1, 4-β-D-xylose, will be hydrolyzed by the extracellular enzymes secreted by the fungal strains during the solid-state fermentation process and effectively utilized for the primordial development. The microbial degradation of the lignocellulosic components of WS by L.edodes and Ceriporiopsis subvermispora incubation was also reported by Mao et al [37], who reported a significant decrease in the absolute amount of hemicelluloses, lignin and cellulose with the increase in fungal biomass. As observed by Hatakka and Hammel [38] and Nishimura et al [39], solubilization of hemicelluloses is mainly due to a higher degradation of lignin which is covalently bound to hemicelluloses.…”

Section: Degradation Of the Lignocellulosic Components Of Substratesupporting

confidence: 74%

Influence of Heat Treatment and Solid-State Fermentation on the Lignocellulosic Fractions of Substrates Supporting Lentinula edodes (Berk.) Pegler Cultivation: Implications for Commercial Production

et al. 2023

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Mushroom production in India has registered a considerable growth in the recent times. However, cultivation of shiitake mushroom, which represents a major share at a global level, is still at a primitive stage in the Indian subcontinent. The scarcity of raw materials and the cost of energy for substrate sterilization are the major hurdles for a large-scale production. The present study delves into the possibility of growing shiitake mushroom on lignocellulosic biomass (saw dust and wheat straw) processed with different heat treatments to develop a cost-effective production technology. Six different strains of shiitake mushroom, viz., DMRO-35, 51, 297, 388s, 410, 412, were used in this study. The substrates were exposed to a pasteurization temperature of 80 ± 5°C in a bulk pasteurization chamber for three different times (H1–H3) and also to a high-pressure sterilization (H4) in an autoclave. DMRO-388s was found to be the most productive strain, irrespective of the substrate and heat treatment method used. Significant differences were observed in the biological yield depending on the type of substrate and heat treatment. Changes in the biochemical composition of the lignocellulosic residues in three different stages, viz., pre heat treatment, inoculation and primordial formation stages, were recorded. Changes in heat treatment levels and duration significantly altered the cellulose/lignin ratio of the growing substrate. High-pressure sterilization aided the rapid degradation of lignin in the substrate and increased its bioavailability, thereby facilitating the fungus achieving its potential yield. A significant correlation in the positive direction between the yield levels of the tested strains and the consumption of lignin in the growing substrate was found, suggesting the significance of pre heat treatment for the bioconversion of lignin and its subsequent utilization in the solid-state fermentation process. The substrate pre heat treatment under high-pressure sterilization was proved to be beneficial to obtain the maximum yields of shiitake mushroom.

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Section: Degradation Of the Lignocellulosic Components Of Substratesupporting

confidence: 74%

Influence of Heat Treatment and Solid-State Fermentation on the Lignocellulosic Fractions of Substrates Supporting Lentinula edodes (Berk.) Pegler Cultivation: Implications for Commercial Production

et al. 2023

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“…Considering the findings of previous studies, which showed that wheat straw naturally contains AFB 1 less than 4 ppb, 49 and the findings of Jackson and Pryor, 50 who reported that P. ostreatus can degrade up to 94% of AFB 1 in homogenized whole corn, AFB 1 production during the P. ostreatus treatment was less likely. The concentration of AFB 1 in fungus‐treated straw was much lower than the threshold level of AFB 1 in animal feed (20 ppb) recommended by the EU 51 .…”

Section: Discussionmentioning

confidence: 84%

“…47 The high production of propionate by steam and lime pasteurized straw also demonstrates better fermentation of fiber, resulting in a shift in the microbial population or in the metabolic pathways that promote the synthesis of propionate. Increase in the production of VFAs and a decrease in acetate-to-propionate ratio in P. ostreatus treated rice straw is reported by Datsomor et al 48 Considering the findings of previous studies, which showed that wheat straw naturally contains AFB 1 less than 4 ppb, 49 and the findings of Jackson and Pryor, 50 who reported that P. ostreatus can degrade up to 94% of AFB 1 in homogenized whole corn, AFB 1 production during the P. ostreatus treatment was less likely. The concentration of AFB 1 in fungus-treated straw was much lower than the threshold level of AFB 1 in animal feed (20 ppb) recommended by the EU.…”

Section: Discussionmentioning

confidence: 85%

Novel techniques for the mass production of nutritionally improved, fungus‐treated lignocellulosic biomass for ruminant nutrition

Sufyan,

Khan,

AbuGhazaleh

et al. 2023

J Sci Food Agric

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BACKGROUNDLaboratory‐scale experiments have shown that treatment with selective lignin‐degrading white‐rot fungi improves the nutritional value and ruminal degradability of lignocellulosic biomass (LCB). However, the lack of effective field‐applicable pasteurization methods has long been recognized as a major obstacle for scaling up the technique for fungal treatment of large quantities of LCB for animal feeding. In this study, wheat straw (an LCB substrate) was subjected to four field‐applicable pasteurization methods – hot‐water, formaldehyde fumigation, steam, and hydrated lime – and cultured with Pleurotus ostreatus grain spawn for 10, 20, and 30 days under solid‐state fermentation. Samples of untreated, pasteurized but non‐inoculated and fungus‐treated straws were analyzed for chemical composition, aflatoxin B1 (AFB1), and in vitro dry matter digestibility (IVDMD), in vitro total gas (IVGP), methane (CH4), and volatile fatty acid (VFA) production.RESULTSDuring the 30‐day fungal treatment, steam and lime pasteurized straws had the greatest loss of lignin, resulting in marked improvements in crude protein (CP), IVDMD, IVGP, and total VFAs. Irrespective of the pasteurization method, the increase in IVDMD during fungal treatment was linearly (R2 = 0.77–0.92) related to lignin‐loss in the substrate during fungal treatment. The CH4 production of the fungus‐treated straw was not affected by the pasteurization methods. Aflatoxin B1 was within the safe level (<5 μg kg−1) in all pasteurized, fungus treated straws.CONCLUSIONSteam and lime were promising field‐applicable pasteurization techniques to produce nutritionally improved fungus‐treated wheat straw to feed ruminants. Lime pasteurization was more economical and did not require expensive energy inputs. © 2023 Society of Chemical Industry.

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“…The P. eryngii strain (MES 13049) used here was not investigated by Nayan et al (2018). White-rot fungi produce a myriad of organic acids during incubation (Mäkelä et al 2002;Kwak et al 2016;Mao et al 2021). The latter authors found that the majority of the organic acids were produced during the first 4 weeks of incubation, leading to the greatest decrease in pH (Mao et al 2021).…”

Section: Discussionmentioning

confidence: 97%

“…White-rot fungi produce a myriad of organic acids during incubation (Mäkelä et al 2002;Kwak et al 2016;Mao et al 2021). The latter authors found that the majority of the organic acids were produced during the first 4 weeks of incubation, leading to the greatest decrease in pH (Mao et al 2021). The P. eryngii strain used in the current work increased the pH of the autoclaved rice straw from 5.5 to 6.1 at 8 weeks, which may indicate that this strain did not or produce limited amounts of organic acids during the incubation period.…”

Section: Discussionmentioning

confidence: 99%

Incubation temperature affects growth and efficacy of white-rot fungi to improve the nutritive value of rice straw

Hai,

Peer,

Cone

et al. 2024

Anim. Prod. Sci.

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Context A great body of evidence is available on the in vitro efficacy of white-rot fungi (WRF) to degrade lignin in fibre-rich biomass (e.g. wheat straw, wood chips and rice straw (RS)) and improve the biomass’ nutritive value for ruminants. Aims Determining the impact of incubation temperature of three WRF to improve the nutritional value of rice straw. Methods Growth of Ceriporiopsis subvermispora, Lentinula edodes and Pleurotus eryngii on RS for 26 days at the following six temperature regimes: continuous at 24°C, 30°C, 35°C and 40°C, and 3 days at 35°C and 40°C, with subsequent days at 24°C. In a follow-up experiment, improvement in fermentability in buffered rumen fluid of RS treated by the three WRF at 24°C and 30°C for up to 8 weeks was investigated. Key results All three fungi grew at temperatures up to 35°C, with no growth observed at 40°C, with C. subvermispora being more temperature sensitive. There were significant differences in cellulose, hemicellulose and lignin degradation of RS at 24°C and 30°C, with C. subvermispora degrading 69% and 90% of the hemicellulose and lignin respectively at 30°C, greater than at 24°C (55% and 80% respectively). For L. edodes, there were significant differences in cellulose degradation between 24°C and 30°C, with 12% more degradation at 30°C, but not for hemicellulose and lignin. In vitro gas production showed no significant differences between the two incubation temperatures for either of the two fungi. Pleurotus eryngii treatment did not show any improvement in terms of in vitro gas production. Conclusions Treatment of RS with L. edodes and C. subvermispora, but not P. eryngii, is robust and temperature changes will not have a major impact on their efficacy as long as the temperature remains below 30°C. Implications Temperature during the incubation of WRF with rice straw needs to be below 30°C for this biotechnology to be applied in practice.

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Assessing the nutritional quality of fungal treated wheat straw: Compounds formed after treatment with Ceriporiopsis subvermispora and Lentinula edodes

Cited by 10 publications

References 48 publications

Influence of Heat Treatment and Solid-State Fermentation on the Lignocellulosic Fractions of Substrates Supporting Lentinula edodes (Berk.) Pegler Cultivation: Implications for Commercial Production

Influence of Heat Treatment and Solid-State Fermentation on the Lignocellulosic Fractions of Substrates Supporting Lentinula edodes (Berk.) Pegler Cultivation: Implications for Commercial Production

Novel techniques for the mass production of nutritionally improved, fungus‐treated lignocellulosic biomass for ruminant nutrition

Incubation temperature affects growth and efficacy of white-rot fungi to improve the nutritive value of rice straw

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