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Table 4 Growth and PHA accumulation by seven isolated Bacillus species in the medium containing 20 g/L reducing sugars produced by saccharification of aqueous ammonia-pretreated rice straw

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

Strains Initial pH Final pH CDW
(g/L)
PHA content (wt%) PHA conc
(g/L)
RCM
(g/L)
Bacillus sp. VK24 7.0 5.5 1.60 ± 0.05 0 0 1.60 ± 0.05
B. anthracis VK33 7.0 5.5 2.28 ± 0.07 3.3 ± 0.1 0 2.20 ± 0.07
B. anthracis VK38 7.0 5.4 2.85 ± 0.02 5.9 ± 0.3 0.17 ± 0.01 2.68 ± 0.03
B. cereus VK91 7.0 5.6 2.80 ± 0.09 43.8 ± 1.3 1.23 ± 0.01 1.57 ± 0.09
B. cereus VK92 7.0 8.0 5.00 ± 0.19 59.3 ± 0.7 2.96 ± 0.15 2.04 ± 0.04
B. cereus VK98 7.0 7.1 5.42 ± 0.12 46.4 ± 2.7 2.51 ± 0.09 2.90 ± 0.21
B. paranthracis VK164 7.0 5.6 2.67 ± 0.19 9.1 ± 0.2 0.24 ± 0.01 2.43 ± 0.18