Combined pretreatment of sugarcane bagasse using alkali and ionic liquid to increase hemicellulose content and xylanase production

Table 4 Xylanase and cellulase production by Bacillus aestuarii UE25 using extracted xylan

Substrate^a	Enzyme productivity (IU mL⁻¹)^a
	After 24 h				After 48 h
	Xylanase	Endoglucanase	ß-glucosidase	Filterpaperase	Xylanase	Endoglucanase	ß-glucosidase	Filterpaperase
Extracted xylan from UTB	25.16 ± 0.02	36.06 ± 0.12	35.8 ± 0.04	5.47 ± 0.01	17.59 ± 0.05	18.71 ± 0.12	26.13 ± 0.04	9.86 ± 0.01
Extracted xylan from NaOH+IL TB	16.19 ± 0.04	22.67 ± 0.10	24.57 ± 0.06	6.52 ± 0.00	12.32 ± 0.04	23.12 ± 0.10	23.32 ± 0.02	7.00 ± 0.00
NaOH+IL TB	8.44 ± 0.16	32.92 ± 0.13	23.52 ± 0.02	7.92 ± 0.02	28.51 ± 0.06	67.42 ± 0.13	61.15 ± 0.06	6.04 ± 0.00
UTB	15.6 ± 0.49	12.34 ± 0.11	14.3 ± 0.01	7 ± 0.00	4.38 ± 0.00	22.14 ± 0.11	12.34 ± 0.01	2.23 ± .01
Xylan	20.24 ± 0.01	21.95 ± 0.31	34.49 ± 0.25	8.49 ± 0.01	13.02 ± 0.01	22.63 ± 0.31	18.91 ± 0.03	7.77 ± 0.03
CMC	14.78 ± 0.03	12.15 ± 0.05	30.57 ± 0.12	9.86 ± 0.03	15.66 ± 0.02	32.53 ± 0.03	35.67 ± 0.1	9.19 ± 0.02

^aXylan was extracted from untreated sugarcane bagasse (UTB) and alkali and ionic liquid pretreated (NaOH+IL TB)

ISSN: 1472-6750