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Selected Publication:

Krongtaew, C; Messner, K; Ters, T; Fackler, K.
(2010): CHARACTERIZATION OF KEY PARAMETERS FOR BIOTECHNOLOGICAL LIGNOCELLULOSE CONVERSION ASSESSED BY FT-NIR SPECTROSCOPY. PART I: QUALITATIVE ANALYSIS OF PRETREATED STRAW
BIORESOURCES. 2010; 5(4): 2063-2080.

Abstract:
Wheat straw (Triticum aestivum L.) and oat straw (Avena sativa L.) were subjected to acid and alkaline pre-treatments partly in combination with hydrogen peroxide. The aim was to remove lignin and increase the accessibility of the polysaccharides to enzymatic digestion. Accessibility was evaluated by digestion with a cell wall degrading enzyme complex to yield reducing sugars that may serve as precursor substrates for biofuels or building block chemicals. Changes in lignin, hemicelluloses, as well as amorphous, semi-crystalline, and crystalline regions of cellulose moieties of pretreated straw were efficiently characterized by Fourier transform near-infrared (FT-NIR) reflectance spectroscopy. These alterations of the chemical structure of straw after different pre-treatment methods were powerfully differentiated by principal component analysis (PCA). Characteristics of the different samples owing to the different pretreatment methods could be clustered from the PCA loadings spectra.
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Find related publications in this database (Keywords)
Lignocellulose characterization
Wheat and oat straw
Mild acidic and alkaline peroxide pretreatments
Fourier-transform near infrared spectroscopy (FT-NIR)
Principal component analysis (PCA)
Multivariate data analysis
Qualitative discriminant analysis


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