Rapid selection and identification of Miscanthus genotypes with enhanced glucan and xylan yields from hydrothermal pretreatment followed by enzymatic hydrolysis

Table 3 Summary of HTPH results for Miscanthus genotypes displaying highest and lowest sugar yields

Description	Pretreatment time (min) **	*Miscanthus* sample No.	Compositions (g/100 g dw)			Sugar yield
Description	Pretreatment time (min) **	*Miscanthus* sample No.	Glu	Xyl	Lig	Glu	Xyl	Glu + Xyl
Highest yields
Glu + xyl mass yield*	0	70	43.6	26.6	17.7	10.2	3.5	13.7
Glu + xyl mass yield*	35	112	42.3	25.7	21.7	35.8	20.8	56.6
% of Glu + xyl theoretical yield#	0	4	37.8	20.1	15.5	26.4	15.0	22.4
% of Glu + xyl theoretical yield#	35	229	41.1	22.6	22.6	87.1	85.4	86.5
Glu mass yield	0	70	43.6	26.6	17.7	10.2	3.5	13.7
Glu mass yield	35	229	41.1	22.6	22.6	35.8	19.3	55.1
% of Glu theoretical yield	0	4	37.8	20.1	15.5	26.4	15.0	22.4
% of Glu theoretical yield	35	155	29.9	22.7	22.0	77.9	73.6	76.1
Xyl mass yield	0	70	43.6	26.6	17.7	10.2	3.5	13.7
Xyl mass yield	35	22	42.6	26.8	20.4	34.9	20.9	55.8
% of Xyl theoretical yield	0	152	32.2	20.8	20.1	24.8	16.2	21.4
% of Xyl theoretical yield	35	191	37.7	22.7	19.5	80.1	86.1	82.4
Lowest yields
Glu + xyl mass yield*	0	33	43.7	26.4	19.8	1.4	1.6	3.0
Glu + xyl mass yield*	35	140	36.6	24.3	22.9	18.6	13.3	31.8
% of Glu + xyl theoretical yield#	0	33	43.7	26.4	19.8	3.1	6.2	4.2
% of Glu + xyl theoretical yield#	35	141	39.0	23.7	23.5	48.2	57.2	51.6
Glu mass yield	0	33	43.7	26.4	19.8	1.4	1.6	3.0
Glu mass yield	35	140	36.6	24.3	22.9	18.6	13.3	31.8
% of Glu theoretical yield	0	33	43.7	26.4	19.8	3.1	6.2	4.2
% of Glu theoretical yield	35	141	39.0	23.7	23.5	48.2	57.2	51.6
Xyl mass yield	0	259	40.9	20.7	24.1	5.2	0.7	5.9
Xyl mass yield	35	140	36.6	24.3	22.9	18.6	13.3	31.8
% of Xyl theoretical yield	0	259	40.9	20.7	24.1	12.8	3.3	9.6
	35	140	36.6	24.3	22.9	50.7	54.7	52.3

*mass yield calculated on basis of 100 g dry weight raw Miscanthus.
#percent of theoretical yield was calculated on basis of the amount of original glucan or xylan contents in raw Miscanthus.
** The highest or lowest yields of HTPH for the pretreatment of 0 or 35 min.
Glu-glucan, xyl-xylan, lig-lignin.

ISSN: 2731-3654