Determination of holocellulose and lignin content in Chinese fir by near infrared spectroscopy

The contents of holocellulose and lignin of wood are important determinants of the pulping quality of wood. The determination of holocellulose and lignin contents using traditional chemical methods is a costly and time-consuming process. Near infrared reflectance (NIR) analysis offers a fast, nondes...

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Bibliographic Details
Published inGuang pu xue yu guang pu fen xi Vol. 27; no. 7; p. 1328
Main Authors Huang, An-Min, Jiang, Ze-Hui, Li, Gai-Yun
Format Journal Article
LanguageChinese
Published China 01.07.2007
Subjects
Calibration
Cellulose - analysis
Cellulose - metabolism
Cunninghamia - chemistry
Lignin - analysis
Lignin - metabolism
Quality Control
Reproducibility of Results
Spectroscopy, Near-Infrared - methods
Wood - analysis
Wood - chemistry
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Summary:The contents of holocellulose and lignin of wood are important determinants of the pulping quality of wood. The determination of holocellulose and lignin contents using traditional chemical methods is a costly and time-consuming process. Near infrared reflectance (NIR) analysis offers a fast, nondestructive testing and low cost alternative for prediction of wood quality. In the present article, the total amounts of holocellulose and lignin contents of 48 samples were analyzed according to standard wet-chemical method. All samples were milled using a Standard Wiley knife mill with a 2 mm screen. The 2 mm material was sieved with a 40-60 mesh sieve. Then, near infrared (NIR) spectra were collected in diffuse reflectance from samples of meal contained in a spinning cup by an analytical spectral devices (ASD) Lab Spec at wavelengths between 350 nm and 2 500 nm. The raw spectra were pretreated by the second derivative and smoothing, then the NIR model was built using partial least-squares statistical analysis and
ISSN:1000-0593