Long-term variability in sugarcane bagasse feedstock compositional methods: sources and magnitude of analytical variability

Table 3 The long-term individually extracted biomass dataset: descriptive statistics of NIST RM 8491 sugarcane bagasse composition on as-received biomass (including individually determined extractives), % dry mass basis

	Ash	Protein	Water extractives	Ethanol extractives	Sucrose	ASL	AIR	Glucan	Xylan	Galactan	Arabinan	Acetyl	Total component closure
Mean	3.87	0.55	3.86	1.87	0.22	4.45	20.35	38.64	21.85	0.87	1.90	3.21	100.78
SD	0.20	0.03	0.43	0.13	0.31	0.53	0.33	0.74	0.63	0.30	0.26	0.38	1.74
Pooled SD	0.19	0.02	0.35	0.13	0.26	0.51	0.32	0.75	0.64	0.30	0.26	0.35	1.75
N	119	48	122	119	119	115	112	119	119	119	119	118	119
RSD (%)	5.3	6.2	11.0	6.9	137.8	11.9	1.6	1.9	2.9	34.9	13.7	11.8	1.7
RpSD (%)	4.9	3.7	9.0	6.9	115.0	11.5	1.6	1.9	2.9	34.6	13.7	10.9	1.7

This set includes bagasse samples run along with feedstock samples. They were analyzed in different labs and on different HPLC systems. This data is used to calculate the long-term variability result
RSD relative standard deviation, SD standard deviation, Pooled SD pooled standard deviation, N number of samples analyzed, RpSD relative standard deviation calculated from the pooled SD, ASL acid-soluble lignin, AIR acid insoluble residue

ISSN: 2731-3654