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Solid State 13 C NMR and Diffuse Reflectance Mid‐Infrared Spectroscopic Analysis of the Effects of Retting on the Chemical Composition of KenafFibre
Author(s) -
Gamble Gary R,
Ramaswamy Gita N,
Baldwin Brian S,
Akin Danny E
Publication year - 1996
Publication title -
journal of the science of food and agriculture
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.782
H-Index - 142
eISSN - 1097-0010
pISSN - 0022-5142
DOI - 10.1002/(sici)1097-0010(199609)72:1<1::aid-jsfa605>3.0.co;2-y
Subject(s) - retting , chemical composition , infrared , composition (language) , reflectivity , diffuse reflectance infrared fourier transform , diffuse reflection , chemistry , infrared spectroscopy , optics , organic chemistry , botany , biology , physics , linguistics , philosophy , photocatalysis , catalysis
Bast ribbons from Tainung 1 (T 1 ) and Guatemala 45 (G 45 ) cultivars of kenaf ( Hibiscus cannabinus ) were subjected to a chemical retting process. The resulting changes at the base and tip regions of each cultivar were analysed using solid‐state 13 C NMR and diffuse reflectance mid‐infrared spectroscopies. Chemical retting was performed by boiling the substrates in NaOH (70 g litre −1 ) +NaHSO 3 (5 g litre −1 ) for 1 h, after which they were neutralised, washed and air dried. This process produced large decreases in the non‐cellulosic components, though 25% of the phenolic component was left undegraded, and cellulose crystallinity was increased by ∽5% over that in unretted samples.