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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