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Table 8 Prediction results of unknown samples of glucose and xylose content level

From: Rapid determination of chemical composition and classification of bamboo fractions using visible–near infrared spectroscopy coupled with multivariate data analysis

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

  1. 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)