Aiming for the complete utilization of sugar-beet pulp: Examination of the effects of mild acid and hydrothermal pretreatment followed by enzymatic digestion

Table 1 Pretreatment conditions of sugar-beet pulp

Sample	Temp, °C	H₂SO₄^a	pH^b	R″₀^c	log R″₀^d
0-0	0	0	5.3	-1.77	-6.97
120-0	120	0	4.8	1.76	-3.04
140-0	140	0	4.4	2.35	-2.05
170-0	170	0	4.1	3.24	-0.86
120-1	120	1*	3.9	2.11	-2.14
140-1	140	1*	3.9	2.70	-1.65
170-1	170	1*	3.8	3.62	-0.53

^aSulfuric acid concentration given in% w/w of the dry-matter content,
^bpH values of the solutions after pretreatment,
^cCombined severity factor according to Overend et al. [47].
^d Decade logarithm of the combined severity factor; 1% w/w of the dry-matter content corresponds to a sulfuric acid concentration of 0.05 w/v%.

ISSN: 2731-3654