Rice straw · L. sajor-caju
✓ Reviewed content
Lentinus sajor-caju (CMU-NK0427) · Chiang Mai University (TH)
Recipe
How this sample was made, step by step · total growth 6 days-
1
Substrate
- 92.42 wt%
- Rice straw (5–20 mm)
- 4.62 wt%
- Rice bran
- 1.85 wt%
- Calcium sulphate (CaSO₄)
- 0.92 wt%
- Calcium carbonate (CaCO₃)
- 0.18 wt%
- Sodium sulphate (Na₂SO₄)
- Pre-treatment
- dried at 60 °C, ground in a wood chipper, sieved
-
2
Sterilisation
- Method
- Autoclaving
- Details
- 121 °C, 60 min (in PP bag)
-
3
Inoculation
- Fungus
- Lentinus sajor-caju · CMU-NK0427
- Inoculum
- Grain spawn
- Rate
- 1 wt%
- Water content
- 60 %
-
4
Growth in mould
3 days- Mould
- cylindrical plastic boxes Ø 86 × 43 mm; acrylic moulds for tensile, bending and impact specimens
- Temperature
- 30 °C
- Light
- dark
-
5
Post-growth
3 days- Where
- demoulded
-
6
Inactivation & pressing
- Method
- Oven drying
- Temperature
- 70 °C
- Pressure
- 0.5 MPa
-
7
Specimen & testing
- Geometry
- compression Ø 86 × 43 mm; tensile dumbbell 165 × 19 mm (neck 57 × 13 mm); bending 127 × 12.7 × 3.2 mm; impact 63.5 × 12.7 × 12.7 mm
- Dry density
- 222.76 kg/m³
- Mass loss
- 70.48 %
- Shrinkage
- 13.26 %
- Measurements
- 5
Steps marked “not reported” were not stated in the source. Suggest missing details
Rice straw (5–20 mm) with L. sajor-caju, cold-pressed (0.5 MPa).
Measurements
Mechanical
| Property | Value | n | Test standard | Conditions | |
|---|---|---|---|---|---|
| Compressive strength | 0.33 ± 0.04 MPa | 10 | ASTM D3501 | 25 °C / 40–50 % RH 5 mm/min |
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| Tensile strength | 0.45 ± 0.02 MPa | 10 | ASTM D638-14 | 2 mm/min |
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| Flexural strength | 0.16 ± 0.02 MPa | 10 | ASTM D790-10 (3-point) | span 40 mm, 2 mm/min |
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| Impact strength (Charpy) | 1.04 ± 0.08 kJ/m² | 10 | ASTM D256 (Charpy) | edit |
Physical properties
Production
Substrate mix
- 92.42 %
- Rice straw · 5–20 mm
- 4.62 %
- Rice bran
- 1.85 %
- Calcium sulphate (CaSO₄)
- 0.92 %
- Calcium carbonate (CaCO₃)
- 0.18 %
- Sodium sulphate (Na₂SO₄)
Fungus & inoculation
- Fungus
- Lentinus sajor-caju (CMU-NK0427)
- Inoculum type
- Grain spawn
- Inoculation rate [wt%]
- 1
- Water content at inoculation [%]
- 60
- Sterilisation
- Autoclaving
- Sterilisation – details
- 121 °C, 60 min (in PP bag)
Growth
- Growth in mould [days]
- 3
- Post-growth after demoulding [days]
- 3
- Temperature [°C]
- 30
- Light
- dark
- Mould / mould material
- cylindrical plastic boxes Ø 86 × 43 mm; acrylic moulds for tensile, bending and impact specimens
Post-processing
- Inactivation
- Oven drying
- Inactivation – temperature [°C]
- 70
- Pressing pressure [MPa]
- 0.5
Specimen
- Specimen geometry
- compression Ø 86 × 43 mm; tensile dumbbell 165 × 19 mm (neck 57 × 13 mm); bending 127 × 12.7 × 3.2 mm; impact 63.5 × 12.7 × 12.7 mm
- Dry density [kg/m³]
- 222.76
- Mass loss on drying [%]
- 70.48
- Shrinkage [%]
- 13.26
Notes
Substrate supplemented with 5 % rice bran, 1 % CaCO₃, 2 % CaSO₄ and 0.2 % Na₂SO₄ on a dry mass basis (shares normalised to 100 % here). Spawn on sorghum grains; 5 g spawn on 500 g substrate (1:100). Pre-growth in bag for 14–21 days at 30 °C, then cold-pressed into the mould at 0.5 MPa for 10 min, 3 days in the mould and 3 days without mould. Dried for 24–72 h until constant mass. Mass loss = moisture content (ASTM D644, wet basis).
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