Wavelength (nm)
|
Sample sets
|
Level
|
Before aqueous ammonia pretreatment (n = 40)
|
After aqueous ammonia pretreatment (n = 90)
|
---|
Glucose
|
Xylose
|
Glucose
|
Xylose
|
---|
R
2
|
SEC/SEV
|
R
2
|
SEC/SEV
|
R
2
|
SEC/SEV
|
R
2
|
SEC/SEV
|
---|
400–780
|
Calibration
|
High
|
0.998
|
0.01
|
0.996
|
0.03
|
0.821
|
0.21
|
0.941
|
0.12
|
Low
|
0.998
|
0.01
|
0.996
|
0.03
|
0.821
|
0.21
|
0.941
|
0.12
|
Validation
|
High
|
0.743
|
0.26
|
0.808
|
0.23
|
0.814
|
0.22
|
0.869
|
0.17
|
Low
|
0.743
|
0.26
|
0.808
|
0.23
|
0.814
|
0.22
|
0.869
|
0.17
|
Factors
|
High
|
11
|
9
|
1
|
8
|
Low
|
11
|
9
|
1
|
8
|
780–2500
|
Calibration
|
High
|
0.955
|
0.11
|
0.978
|
0.08
|
0.810
|
0.22
|
0.850
|
0.19
|
Low
|
0.955
|
0.11
|
0.978
|
0.08
|
0.810
|
0.22
|
0.850
|
0.19
|
Validation
|
High
|
0.491
|
0.38
|
0.857
|
0.20
|
0.783
|
0.24
|
0.783
|
0.22
|
Low
|
0.491
|
0.38
|
0.857
|
0.20
|
0.783
|
0.24
|
0.783
|
0.22
|
Factors
|
High
|
7
|
7
|
3
|
6
|
Low
|
7
|
7
|
3
|
6
|
400–2500
|
Calibration
|
High
|
0.939
|
0.13
|
0.984
|
0.07
|
0.994
|
0.04
|
0.978
|
0.07
|
Low
|
0.939
|
0.13
|
0.984
|
0.07
|
0.994
|
0.04
|
0.978
|
0.07
|
Validation
|
High
|
0.748
|
0.26
|
0.891
|
0.17
|
0.953
|
0.11
|
0.924
|
0.13
|
Low
|
0.750
|
0.26
|
0.891
|
0.17
|
0.953
|
0.11
|
0.924
|
0.13
|
Factors
|
High
|
7
|
8
|
12
|
11
|
Low
|
7
|
8
|
12
|
11
|
- The data of glucose and xylose content level and spectra were collected from 4- and 6-meter-height juvenile bamboo before aqueous ammonia pretreatment, and 2- and 10-year-old mature bamboo and 4- and 6-meter-height juvenile bamboo after aqueous ammonia pretreatment