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Energy-efficient substrate pasteurisation for combined production of shiitake mushroom (Lentinula edodes) and bioethanol
Swedish University of Agricultural Sciences, Department of Forest Biomaterial and Technology, Umeå, Sweden.
Umeå University, Department of Chemistry, Umeå, Sweden.
Swedish University of Agricultural Sciences, Department of Forest Biomaterial and Technology, Umeå, Sweden. Swedish University of Agricultural Sciences, Department of Forest Genetics and Plant Physiology, Umeå Plant Science Center, Umeå, Sweden.
Swedish University of Agricultural Sciences, Department of Forest Biomaterial and Technology, Umeå, Sweden. Guangxi University, College of Agronomy, Nanning, China.
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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°C) pasteurisation (HAP) of birch-wood-based substrate was compared to conventional autoclaving (steam at 121 °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]
Edible fungi, Enzymatic digestibility, Hot-air pasteurisation, Lignin degradation, Spent mushroom substrate
National Category
Bioenergy Other Mechanical Engineering
Research subject
Wood Science and Engineering
Identifiers
URN: urn:nbn:se:ltu:diva-71700DOI: 10.1016/j.biortech.2018.11.071ISI: 000454610900009PubMedID: 30500765OAI: oai:DiVA.org:ltu-71700DiVA, id: diva2:1265036
Note

Validerad;2018;Nivå 2;2018-12-05 (svasva)

Available from: 2018-11-22 Created: 2018-11-22 Last updated: 2019-03-27Bibliographically approved

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Myronycheva, Olena

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