MycoShare Review version

Cardboard, shredded · P. ostreatus (SCL/SCH) /

Version 1

7 Oct 2026, 14:20 · Data import (sample data) · Taken from Walter & Gürsoy 2022, DOI 10.3390/biomimetics7030100

FieldVersion 1
Content status Reviewed content
Title / sample name Cardboard, shredded · P. ostreatus (SCL/SCH)
Short description Shredded waste cardboard with wheat bran; candidate for acoustic panels.
Institution / laboratory Penn State University, Department of Architecture (US)
Authors Walter, N.; Gürsoy, B.
Publication Walter & Gürsoy 2022: A Study on the Sound Absorption Properties of Mycelium-Based Composites Cultivated on Waste Paper-Based Substrates
Fungus Pleurotus ostreatus (Strain 123)
Inoculum type Substrate spawn
Inoculation rate [wt%] 10
Water content at inoculation [%] 65
Sterilisation Autoclaving
Sterilisation – details 121 °C, 45 min (PP autoclave bags, cooled overnight)
Pre-growth (bag) [days] 12
Growth in mould [days] 16
Temperature [°C] 24
Relative humidity [%] 99
Mould / mould material acrylic formworks 250 × 125 × 38 mm, disinfected with 70 % ethanol, covered with plastic wrap
Inactivation Oven drying
Inactivation – temperature [°C] 90
Inactivation – duration [h] 24
Specimen geometry discs Ø 100 mm (low frequencies) and Ø 29 mm (high frequencies), 38 mm thick; cut with a band saw and sanded
Notes / observations Recipe: 100 g dry material, 185 g water, 18 g wheat bran (the text also states “10 % (w/w)” bran – shares here calculated from the gram values). Growth room 24 ± 1 °C, 99 % RH. After demoulding dried with a fan for 2 days, then 24 h at 90 °C.
Substrate mix
  • 84.75 % Waste cardboard, shredded
  • 15.25 % Wheat bran
Measurements
  • Sound absorption coefficient at 1000 Hz: 0.6891 ± 0.26 – (n = 6)
  • Sound absorption coefficient at 125 Hz: 0.0698 ± 0.02 – (n = 6)
  • Sound absorption coefficient at 250 Hz: 0.1609 ± 0.07 – (n = 6)
  • Sound absorption coefficient at 500 Hz: 0.5116 ± 0.17 – (n = 6)
  • Sound absorption coefficient at 2000 Hz: 0.4934 ± 0.07 – (n = 9)
  • Sound absorption coefficient at 4000 Hz: 0.5731 ± 0.07 – (n = 9)
  • Mean sound absorption coefficient (125–4000 Hz): 0.42 –