Wavelength (nm)
|
Sugars
|
Level
|
Before aqueous ammonia pretreatment (n = 40)
|
After aqueous ammonia pretreatment (n = 90)
|
---|
No. of prediction samples
|
Correct no.
|
Accuracy (%)
|
No. of prediction samples
|
Correct no.
|
Accuracy (%)
|
---|
400–780
|
Glucose
|
High
|
10
|
10
|
100
|
18
|
18
|
100
|
Low
|
6
|
6
|
100
|
18
|
18
|
100
|
Xylose
|
High
|
8
|
8
|
100
|
24
|
24
|
100
|
Low
|
8
|
8
|
100
|
12
|
12
|
100
|
780–2500
|
Glucose
|
High
|
10
|
10
|
100
|
18
|
18
|
100
|
Low
|
6
|
6
|
100
|
18
|
18
|
100
|
Xylose
|
High
|
8
|
8
|
100
|
24
|
24
|
100
|
Low
|
8
|
8
|
100
|
12
|
12
|
100
|
400–2500
|
Glucose
|
High
|
10
|
10
|
100
|
18
|
18
|
100
|
Low
|
6
|
6
|
100
|
18
|
18
|
100
|
Xylose
|
High
|
8
|
8
|
100
|
24
|
24
|
100
|
Low
|
8
|
8
|
100
|
12
|
12
|
100
|
- 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 (based on PLS-DA)