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Table 5 Comparison of PHA production by different bacterial strains from rice straw hydrolysates

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

Strains Pretreatment—hydrolysis method CDW
(g/L)
PHA content (wt%) PHA conc
(g/L)
Yield
(g/g)
PHA (g/L/h) Reference
Bacillus cereus VK92 20% NH3, 80 °C, 10 h—Enzymatic, 50 °C, 40 h 5.00 59.3 2.96 0.15 0.062 This study
B. cereus VK98 20% NH3, 80 °C –Enzymatic, 50 °C, 40 h 5.42 46.4 2.51 0.13 0.052 This study
Bacillus firmus NII 0830a 2% H2SO4, 121 °C, 1 h 1.90 89.0 1.68 0.22 0.019 Sindhu et al. (2013)
Cupriavidus necator ATCC 17697 6% H2SO4,121 °C, 1 h 1.71 21.0 0.36 0.13 0.03 Ahn et al. (2015)
C. necator ATCC 17697 2% H2SO4, 121 °C, 1 h 1.59 53.0 0.84 0.13 0.035 Ahn et al. (2016)
Ralstonia eutropha (C. necator) ATCC 17697 2% NaOH, 121 °C, 30 min—Enzymatic in two stages, 50 °C and 24 h for each stage 15.5 70.1 9.88 0.49 0.206 Saratale and Oh (2015)
Bacillus megaterium B-10 0.5% H2SO4, 121 °C, 40 min 4.67 32.0 1.50 0.08 0.042 Li et al. (2021)
  1. aPHB analysis using spectrophotometric method