Beech sawdust · P. ostreatus (FS-PO)
✓ Reviewed content
Pleurotus ostreatus · TU Graz, Institute of Architecture and Media (AT)
Recipe
How this sample was made, step by step · total growth 14 days-
1
Substrate
- 100 wt%
- Beech sawdust (approx. 3 mm)
- Pre-treatment
- soaked in distilled water for 24 h, drained
-
2
Sterilisation
- Method
- Autoclaving
- Details
- pressure cooker 121 °C, 45 min in PP microfilter bag (SacO2 PP50/SEU4/V40-51)
-
3
Inoculation
- Fungus
- Pleurotus ostreatus
- Inoculum
- Grain spawn
- Rate
- 10 wt%
- Water content
- 58 %
-
4
Growth in mould
7 days- Mould
- perforated transparent film, 0.5 mm; filled by hand with manual pressing
- Temperature
- 23 °C
- Light
- dark
-
5
Post-growth
7 days- Where
- demoulded
-
6
Inactivation
- Method
- Oven drying
- Temperature
- 40 °C
-
7
Specimen & testing
- Geometry
- cube 10 × 10 × 10 cm (density, compression, water absorption); prism 4 × 4 × 16 cm (bending)
- Dry density
- 260 kg/m³
- Shrinkage
- 10 %
- Measurements
- 4
Growth in mould 7 daysPost-growth 7 days
Steps marked “not reported” were not stated in the source. Suggest missing details
Beech sawdust (approx. 3 mm) with oyster mushroom – the reference mix of the study.
Measurements
Mechanical
| Property | Value | n | Test standard | Conditions | |
|---|---|---|---|---|---|
| Compressive strength | 2.49 MPa | 4 | EN 1015-11 | loading rate 10 N/mm²/s according to the paper; failure at force drop; single values 4.31 / 0.28 / 4.23 / 1.12 MPa – FS-PO-03 and -07 grew 3 days longer |
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| Flexural strength | 0.11406 MPa | 6 | EN 1015-11 (3-point) | single values 0.143 / 0.076 / 0.171 / 0.078 / 0.123 / 0.093 MPa |
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Physical properties
| Property | Value | n | Test standard | Conditions | |
|---|---|---|---|---|---|
| Density | 260 kg/m³ | 6 | mass/volume (24 edge measurements per cube) | single values 270, 270, 250, 260, 260, 250 kg/m³ (g/cm³ in the paper) |
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Moisture & water
| Property | Value | n | Test standard | Conditions | |
|---|---|---|---|---|---|
| Capillary water absorption coefficient (mortar method) | 0.002867 kg/(m²·√min) | 3 | capillary water absorption as for hardened mortar (paper ref. 19) | surface sealed with EVA, immersed 5 cm mean calculated from 0.0034 / 0.0022 / 0.0030; C = 0.1·(M4 − M1) |
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Production
Substrate mix
Fungus & inoculation
- Fungus
- Pleurotus ostreatus
- Inoculum type
- Grain spawn
- Inoculation rate [wt%]
- 10
- Water content at inoculation [%]
- 58
- Sterilisation
- Autoclaving
- Sterilisation – details
- pressure cooker 121 °C, 45 min in PP microfilter bag (SacO2 PP50/SEU4/V40-51)
Growth
- Growth in mould [days]
- 7
- Post-growth after demoulding [days]
- 7
- Temperature [°C]
- 23
- Light
- dark
- Mould / mould material
- perforated transparent film, 0.5 mm; filled by hand with manual pressing
Post-processing
- Inactivation
- Oven drying
- Inactivation – temperature [°C]
- 40
Specimen
- Specimen geometry
- cube 10 × 10 × 10 cm (density, compression, water absorption); prism 4 × 4 × 16 cm (bending)
- Dry density [kg/m³]
- 260
- Shrinkage [%]
- 10
Notes
Substrate soaked in distilled water for 24 h. Spawn (grain spawn, local supplier) 10 % of the mass of the sterilised (wet) substrate. Stored protected from light at 22–24 °C (entered as 23 °C). Dried in a drying cabinet at 40 °C until completely dry. Single specimens (n = 1) unless stated otherwise.
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