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

Table 2 The long-term extractives-free dataset: descriptive statistics of NIST RM 8491 sugarcane bagasse composition on an extractives-free, % dry mass basis

	Ash	Protein	ASL	AIR	Glucan	Xylan	Galactan	Arabinan	Acetyl	Total component closure
Mean	3.66	0.55	4.51	21.81	40.96	22.97	0.94	1.94	3.41	100.55
SD	0.33	0.05	0.51	0.53	0.73	0.67	0.32	0.32	0.33	1.50
Pooled SD	0.32	0.03	0.42	0.43	0.74	0.67	0.32	0.33	0.34	1.49
N	288	103	234	233	293	293	292	293	295	291
RSD (%)	8.9	9.8	11.3	2.4	1.8	2.9	34.1	16.7	9.8	1.5
RpSD (%)	8.8	5.5	9.2	2.0	1.8	2.9	34.1	16.9	9.9	1.5

This set includes bulk-extracted bagasse samples run along with process intermediate samples. They were analyzed in different labs and on different HPLC systems
SD standard deviation, Pooled SD pooled standard deviation, N number of samples analyzed, RSD relative standard deviation, RSD relative standard deviation, RpSD relative standard deviation calculated from the pooled SD, ASL acid-soluble lignin, AIR acid insoluble residue

ISSN: 2731-3654