Integrated production of edible mushroom (Auricularia auricular-judae), fermentable sugar and solid biofuel

Sammanfattning

This study aimed to develop an energy-and resource-efficient process for the coproduction of edible mushroom, fermentable sugar and solid biofuel from wood residues. A promising potential was revealed for wood ear fungus (Auricularia auricular-judae), which yielded about 200 g mushroom per kg dry birch based substrate, with concomitant degradation of 76.8 and 85.7% of lignin and xylan, respectively, in the substrate. Substrate pasteurisation by hot-air (85-100 degrees C) was as effective as by energy intensive autoclaving (121 degrees C), resulting comparable mushroom growth and degradation of lignocellulose. The spent mushroom substrate (SMS) contained 28-33% glucan, which upon analytical enzymatic saccharification released around 46% of the potentially-achievable glucose, corresponding to a 2.3-fold enzymatic digestibility compared with that of the raw substrate. The solid leftover generated after enzymatic hydrolysis revealed high thermal energy value and promising combustion characteristics, showing a plausibility to be recycled as solid fuel for self-supporting energy system and space heating. (C) 2021 Elsevier Ltd. All rights reserved.

Nyckelord

Edible mushroom; Energy saving; Biological pretreatment; Bioethanol; Solid biofuel

Publicerad i

Renewable Energy
2021, volym: 170, sidor: 172-180

SLU författare

• Xiong, Shaojun

  • Institutionen för skogens biomaterial och teknologi, Sveriges lantbruksuniversitet
    
  • Beijing Normal University

• Chen, Feng

  • Institutionen för skogens biomaterial och teknologi, Sveriges lantbruksuniversitet
    

• Grimm, Alejandro

  • Institutionen för skogens biomaterial och teknologi, Sveriges lantbruksuniversitet
    

• Eilertsen, Lill

  • Institutionen för skoglig genetik och växtfysiologi, Sveriges lantbruksuniversitet
    
  • Institutionen för skogens biomaterial och teknologi, Sveriges lantbruksuniversitet
    

• Arshadi, Mehrdad

  • Institutionen för skogens biomaterial och teknologi, Sveriges lantbruksuniversitet
    

Globala målen (SDG)

SDG7 Hållbar energi för alla
SDG9 Hållbar industri, innovationer och infrastruktur
SDG12 Hållbar konsumtion och produktion

UKÄ forskningsämne

Förnyelsebar bioenergi

Publikationens identifierare

• DOI: https://doi.org/10.1016/j.renene.2021.01.124

Permanent länk till denna sida (URI)

https://res.slu.se/id/publ/110623