Characterization of kenaf (Hibiscus cannabinus) lignin by pyrolysis-gas chromatography-mass spectrometry in the presence of tetramethylammonium hydroxide

Kuroda, Kenichi; Izumi, Akiko; Mazumder, Bibhuti B.; Ohtani, Yoshito; Sameshima, Kazuhiko

doi:10.1016/s0165-2370(02)00047-5

Cited by 48 publications

(39 citation statements)

References 22 publications

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“…The solution of 13 C-NMR spectrum was obtained on a Bruker AV-400 operating with TMS as an internal standard at 100.6 MHz under total proton decoupled conditions. It was recorded at 25 C from 200 mg acetylated lignin dissolved in 1.0 mL DMSO-d 6 after 50,000 scans.…”

Section: C-nmrmentioning

confidence: 99%

“…Mazumder et al 14 analyzed the hand-separated bast fibers by pyrolysis-GC, which showed that mature bast lignin has high S/G value. This work reports the isolation of MWL from retted kenaf fiber of China, the MWL lignin was measured by elemental analysis, FTIR, 1 H-NMR, and 13 C-NMR spectroscopy to get the C 9 formula of lignin and figure out the structure characterization. The results are expected to be helpful for further application of kenaf fiber as materials of higher grade products in textile field.…”

Section: Introductionmentioning

confidence: 99%

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The isolation and characterization of lignin of kenaf fiber

Yan

2009

J of Applied Polymer Sci

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In this article, milled wood lignin (MWL) was isolated and purified from retted kenaf fiber, the lignin obtained was characterized by elemental analysis, FTIR, 1 H-NMR, and 13 C-NMR spectroscopy. The C 9 formula is calculated for kenaf fiber MWL as C 9 H 9.32 O 3.69 (OCH 3 ) 1.30 . The spectra of FTIR, 1 H-NMR, and 13 C-NMR show the kenaf fiber lignin to be of the G/S type with high proportion of syringyl (S) unit. The numbers of phenolic and aliphatic hydroxyl groups in the kenaf fiber MWL are estimated to be 0.14 and 1.31, respectively, per C 9 unit. The OH aliph is 90.3% in total numbers of hydroxyl groups of kenaf fiber MWL, and the OH ph is 9.7%. It is evident that the b-O-4 structures are mainly linkage in the MWL of kenaf fiber, which contain more erythro stereochemistry type in b-O-4 units than thero stereochemistry type. In general, the characteristics of lignin of kenaf fiber are similar to that of hardwood.

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Section: C-nmrmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The isolation and characterization of lignin of kenaf fiber

Yan

2009

J of Applied Polymer Sci

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“…Analytical pyrolysis was used to quantitatively assess content of carbohydrates [8][9][10], lignin [9,11] and extractives [17], as well as lignin composition [12][13][14][15][16] in wood and pulp.…”

Section: Introductionmentioning

confidence: 99%

Analytical pyrolysis as a direct method to determine the lignin content in wood

Alves¹,

Schwanninger

Pereira

et al. 2006

Journal of Analytical and Applied Pyrolysis

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“…Sólo recientemente ha tenido algún desarrollo esta técnica para el análisis cuantitativo (Rodrigues et al, 1999;Kuroda et al, 2002). También es muy reciente que comienzan a compararse estos resultados obtenidos mediante pirólisis, con los métodos de referencia, particularmente con el contenido de lignina obtenido por pirólisis analítica y por el método Klason (Alves, 2004).…”

Section: Introduccionunclassified

Estudio del contenido y la calidad de la lignina mediante Pirólisis analítica en madera de Pinus caribaea

Godoy¹,

Rodrígues²,

Alves³

et al. 2007

Maderas, Cienc. tecnol.

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RESUMENEn este trabajo se presentan los resultados alcanzados en la determinación del contenido de lignina así como de su calidad (relación H/G) en muestras de madera de Pinus caribaea var caribaea de tres localidades en la provincia de Pinar del Río, Cuba. El estudio se realizó en el Instituto de Investigación Científica Tropical de Lisboa, Portugal, en el marco del Proyecto GEMA. La técnica utilizada fue la Pirólisis analítica. Los resultados que se muestran representan el promedio de tres corridas experimentales y se obtuvieron valores cercanos al método Klason utilizado como referencia. Se encontró una correlación aceptable entre los contenidos del lignina-pirólisis y lignina Klason para esta especie, lo cual permite calcular el contenido de lignina Klason a través del contenido de ligninapirólisis. La pirólisis analítica es de gran utilidad en los programas de mejoramiento genético, en que es necesario el análisis de muchas muestras, ya que la introducción de parámetros como la composición química de la madera, induce al desarrollo de métodos expeditos de caracterización, reproducibles y de bajo costo, una vez que los métodos tradicionales son lentos, requieren mucha mano de obra y son de elevado costo.

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Characterization of kenaf (Hibiscus cannabinus) lignin by pyrolysis-gas chromatography-mass spectrometry in the presence of tetramethylammonium hydroxide

Cited by 48 publications

References 22 publications

The isolation and characterization of lignin of kenaf fiber

The isolation and characterization of lignin of kenaf fiber

Analytical pyrolysis as a direct method to determine the lignin content in wood

Estudio del contenido y la calidad de la lignina mediante Pirólisis analítica en madera de Pinus caribaea

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