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Table 1 Rice straw recovery after pretreatment with alkali at different incubation temperatures and times

From: Polyhydroxyalkanoate production from rice straw hydrolysate obtained by alkaline pretreatment and enzymatic hydrolysis using Bacillus strains isolated from decomposing straw

2% (w/v) NaOH 2% (w/v) Ca(OH)2 20% aqueous ammonia
Temperature (°C) Time (h) Rice straw recovery (%) Temperature (°C) Time (h) Rice straw recovery (%) Temperature (°C) Time (h) Rice straw recovery (%)
30 1 84.4 ± 1.3 30 12 90.7 ± 1.5 50 5 85.8 ± 1.7
2.5 79.4 ± 1.5 24 89.4 ± 1.3 10 80.9 ± 1.4
5 73.5 ± 1.5 36 89.4 ± 1.1 15 79.9 ± 1.3
7.5 71.1 ± 1.4 48 88.0 ± 1.4 80 5 75.7 ± 1.2
10 70.2 ± 1.2 80 12 88.7 ± 1.5 10 72.5 ± 1.5
50 1 83.3 ± 1.4 24 86.9 ± 1.6 15 70.5 ± 1.0
2.5 71.6 ± 1.3 36 86.3 ± 1.2    
5 67.4 ± 1.2 48 85.7 ± 1.1    
7.5 64.4 ± 1.1 121 0.5 86.1 ± 1.7    
10 63.4 ± 1.4 1 84.6 ± 1.9    
80 1 63.0 ± 1.0       
2 61.5 ± 1.2       
3 60.1 ± 1.3       
4 59.1 ± 1.0       
5 59.0 ± 1.2