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Table 2 Comparison of the glucan-to-glucose conversion of cellulose in rice straw treated with different pretreatment methods followed by enzymatic hydrolysis

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

Pretreatment method Solid loading
(g/L)
Hydrolysis time
(h)
Glucan conversion (%) Reference
20% aq. ammonia, 80 °C, 10 h 100 30 92 This study
21% aq. ammonia, 69 °C, 10 h 167 96 88.4 Ko et al. (2009)
20% aq. ammonia, 80 °C, 12 h 100 72 94.4 Kim et al. (2014)
7% aq. ammonia, 80 °C, 12 h 100 72 91.2 Kim et al. (2014)
2% NaOH, 80 °C, 3 h 100 15 81.9 This study
2.96% NaOH, 81.79 °C, 56.66 min 100 72 78.7 Kim and Han (2012)
4% NaOH, 25 °C, 12 h and 121 °C, 1 h 80 96 81.2 Takano and Hoshino (2018)
5% NaOH, 100 °C, 3 h 30 24 84.33 Sophonputtanaphoca et al. (2018)
7% NaOH, 80 °C, 4 h 100 48 88.27 Tsegaye et al. (2019)
2% Ca(OH)2, 80 °C, 24 h 100 15 55.6 This study
10% Ca(OH)2, 95 °C, 3 h 100 72 48.5 Cheng et al. (2010)
15% Ca(OH)2, 25 °C, 72 h 50 72 58.4 Gu et al. (2015)
1% H2SO4, 160 °C, 0.5 h 50 72 57 Lee et al. (2015)
3.65% HCl, 4.9% H2SO4 or 3.27% H3PO4, 25 °C, 4 h and 121 °C, 1 h 100 120 72,2% Jampatesh et al. (2019)
1% H2SO4, 1 h and steam explosion, 180 °C, 10 min residence time 50 72 81.1% Semwal et al. (2019)