The hemicellulolytic enzyme arsenal of Thermobacillus xylanilyticus depends on the composition of biomass used for growth

Table 1 Chemical compositions of plant cell walls after T. xylanilyticus growth

WS residues	Yield (%)^a	Total sugars (%)^b	Ara (%)^b	Xyl (%)^b	G (%)^b	Cell density cfu/mL^c	Phenolic esters^d (mg/g)^e			Acetyl esters (mg/g)^e
WS residues	Yield (%)^a	Total sugars (%)^b	Ara (%)^b	Xyl (%)^b	G (%)^b	Cell density cfu/mL^c	pC	Fe	DiFe	Acetyl esters (mg/g)^e
0 h	86	78	4	28	44	0.0	5.7 ± 0.3	3.2 ± 0.1	0.3 ± 0.0	31.0 ± 0.1
24 h	80	67	4	26	35	2.5	5.2 ± 0.4	2.9 ± 0.1	0.3 ± 0.0	29.0 ± 0.2
48 h	73	66	4	26	35	1.9	5.7 ± 0.3	3.3 ± 0.3	0.3 ± 0.0	23.0 ± 1.2
72 h	76	63	4	27	32	0.6	5.5 ± 0.2	3.0 ± 0.1	0.3 ± 0.0	26.1 ± 4.3
WB residues	Yield (%) ^a	Total sugars (%) ^b	Ara (%) ^b	Xyl (%) ^b	G (%) ^b	Cell density cfu/mL ^c	Phenolic esters ^d (mg/g) ^e			Acetyl esters (mg/g) ^e
WB residues	Yield (%) ^a	Total sugars (%) ^b	Ara (%) ^b	Xyl (%) ^b	G (%) ^b	Cell density cfu/mL ^c	pC	Fe	DiFe	Acetyl esters (mg/g) ^e
0 h	84	74	21	31	22	0.0	0.2 ± 0.0	6.8 ± 0.1	0.9 ± 0.0	8 ± 0.9
24 h	45	72	23	22	25	2.7	0.0 ± 0.0	1.4 ± 0.1	0.5 ± 0.0	8.9 ± 0.1
48 h	48	69	23	21	24	2.6	0.0 ± 0.0	1.4 ± 0.1	0.5 ± 0.0	9 ± 0.0
72 h	45	75	24	21	27	0.2	0.1 ± 0.0	1.3 ± 0.2	0.6 ± 0.1	9.8 ± 0.4

^a: total dry matter; ^b: Carbohydrates are given as % of total dry matter; ^c: Cell density is given as 10⁹ cfu/mL; ^d: Phenolic acid represents ferulic, p-coumaric and total diferulic acids; ^e: Ester contents are given as mg per g of residues.

ISSN: 1475-2859