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Energy-efficient substrate pasteurisation for combined production of shiitake mushroom (Lentinula edodes) and bioethanol
Umeå University, Faculty of Science and Technology, Department of Chemistry.
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2019 (English)In: Bioresource Technology, ISSN 0960-8524, E-ISSN 1873-2976, Vol. 274, p. 65-72Article in journal (Refereed) Published
Abstract [en]

Hot-air (75-100 degrees C) pasteurisation (HAP) of birch-wood-based substrate was compared to conventional autoclaving (steam at 121 degrees C) with regard to shiitake growth and yield, chemical composition of heat-pretreated material and spent mushroom substrate (SMS), enzymatic digestibility of glucan in SMS, and theoretical bioethanol yield. Compared to autoclaving, HAP resulted in faster mycelial growth, earlier fructification, and higher or comparable fruit-body yield. The heat pretreatment methods did not differ regarding the fractions of carbohydrate and lignin in pretreated material and SMS, but HAP typically resulted in lower fractions of extractives. Shiitake cultivation, which reduced the mass fraction of lignin to less than half of the initial without having any major impact on the mass fraction of glucan, enhanced enzymatic hydrolysis of glucan about four-fold. The choice of heating method did not affect enzymatic digestibility. Thus, HAP could substitute autoclaving and facilitate combined shiitake mushroom and bioethanol production.

Place, publisher, year, edition, pages
Elsevier, 2019. Vol. 274, p. 65-72
Keywords [en]
Hot-air pasteurisation, Edible fungi, Spent mushroom substrate, Lignin degradation, Enzymatic digestibility
National Category
Biochemistry and Molecular Biology
Identifiers
URN: urn:nbn:se:umu:diva-155627DOI: 10.1016/j.biortech.2018.11.071ISI: 000454610900009PubMedID: 30500765OAI: oai:DiVA.org:umu-155627DiVA, id: diva2:1282966
Funder
Swedish Research Council, VINNOVA2013-02015Swedish Research Council, 2016-05104Swedish Research Council, 2017-02705Swedish Research Council, EM P37816Swedish Research Council, P42481Bio4EnergyAvailable from: 2019-01-28 Created: 2019-01-28 Last updated: 2019-01-28Bibliographically approved

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Martin, CarlosJönsson, Leif J.

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Xiong, ShaojunMartin, CarlosMyronycheva, OlenaLarsson, Sylvia H.Jönsson, Leif J.
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