Conversion factors for carbohydrate analysis by hydrolysis and 1H-NMR spectroscopy

Shin, Soo‐Jeong; Cho, Nam-Seok

doi:10.1007/s10570-007-9156-6

Cited by 46 publications

(17 citation statements)

References 8 publications

(10 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Acetone and hot-water extracted C&D wood waste were used for Klason lignin determination and carbohydrate compositional analysis. The Klason lignin content was analyzed by the NREL procedure but the carbohydrate composition was analyzed by acid hydrolysis followed by 1 H-NMR spectroscopy (NREL, 2008;Shin and Cho, 2008). Acidic filtrates were analyzed by Bruker Avance NMR Spectrometer (600 MHz for proton).…”

Section: Methodsmentioning

confidence: 99%

Ethanol production from acid hydrolysates based on the construction and demolition wood waste using Pichia stipitis

Cho

Shin

Bae

et al. 2011

Bioresource Technology

Self Cite

View full text Add to dashboard Cite

Section: Methodsmentioning

confidence: 99%

Ethanol production from acid hydrolysates based on the construction and demolition wood waste using Pichia stipitis

Cho

Shin

Bae

et al. 2011

Bioresource Technology

Self Cite

View full text Add to dashboard Cite

“…One important reason may be loss of xylan to furfural degradation products during acid hydrolysis. Shin and Cho reported a loss of up to 38% of xylans when using a similar method, even though furfural was taken into account [32]. It is recommended that other methods of hydrolysis such as acid methanolysis be considered for quantification of lignocellulosic carbohydrates [33,34].…”

Section: Chemical Composition Of Apsmentioning

confidence: 99%

“…The minute amounts of mannose, galactose, and rhamnose that were detected in the 1 H-NMR spectrum of APS acid hydrolysate were not detectable in that of EAPS revealing that respective polysaccharides had been almost completely solubilized during HWE. It may be concluded that, even though it is considered as an underestimate of carbohydrate content (especially xylans [32]), 1 H-NMR may be accepted as a comparative tool to assess the effects of HWE on APS. The total mass balance for our analysis of EAPS (using HWE as an autohydrolysis process is initiated by deacetylation of biomass, which in this case accounted to a total loss of 81% of originally present acetyl groups.…”

Section: Chemical Composition Of Eapsmentioning

confidence: 99%

Chemical Composition of Apricot Pit Shells and Effect of Hot-Water Extraction

et al. 2015

View full text Add to dashboard Cite

Abstract:Agricultural residues, such as corn stover, wheat straw, and nut shells show promise as feedstocks for lignocellulosic biorefinery due to their relatively high polysaccharide content and low or no nutritional value for human consumption. Apricot pit shells (APS) were studied in this work to assess their potential for use in a biorefinery. Hot water extraction (HWE; 160 °C, 2 h), proposed to remove easily accessible hemicelluloses, was performed to evaluate the susceptibility of APS to this mild pretreatment process. The chemical composition of APS before and after HWE (EAPS) was analyzed by standard methods and 1 H-NMR. A low yield of the remaining HW-extracted APS (~59%) indicated that APS are highly susceptible to this pretreatment method. activity (AOA) of APS extracts was also undertaken. AOA of organic APS extracts were shown to be more than 20 times higher than that of a synthetic antioxidizing agent.

show abstract

“…The residue was calculated in terms of the Klason lignin content. For monosaccharide compositional analysis, the experiment was run at a 1/10 scale-down, and 2nd stage hydrolysis involved dilution by deuterium oxide (D 2 O) as an NMR solvent rather than the boiling of distilled water for 1 H-nuclear magnetic resource spectroscopic analysis (Shin and Cho 2008). The operating conditions are listed in Table 1.…”

Section: Estimation Of Klason Lignin Content and Monosaccharidesmentioning

confidence: 99%

Chemical modification of secondary xylem under tensile stress in the stem ofLiriodendron tulipifera

Moon

Shin

Choi

et al. 2011

Forest Science and Technology

Self Cite

View full text Add to dashboard Cite

Tension wood is a specialized tissue that develops in the upper side of leaning stem and branches in angiosperm. In yellow poplar, tension wood does not form a G-layer, which is one of the most characteristic features of typical tension wood. In order to determine whether the chemical modification associated with tension wood formation in yellow poplar is consistent with those of G-layer-forming angiosperm species, tension wood was induced via mechanical bending treatment for 7 and 14 days in the stem of 2-year-old yellow poplars, and its major cell wall components were analyzed. Whereas the cellulose contents of the tension wood were higher than those in opposite wood, its lignin contents were lower; the result is consistent with that seen in other angiosperm tension wood. Interestingly, the lignin contents differed between tension wood and opposite wood sides at 7 days in the bent sample, but became similar levels to each other at later stages of tension wood formation. The S/G ratio of tension wood was also higher than that of opposite wood. Additionally, the composition of hemicelluloses (glucomannan and xylan) was altered significantly under tensile stress conditions in the yellow poplar stem. Therefore, the majority of the cell wall polymers were altered significantly in the tension wood relative to those in opposite wood, and these changes appear to be developmentally regulated, regardless of the existence of the G-layer in the fiber.

show abstract

Conversion factors for carbohydrate analysis by hydrolysis and 1H-NMR spectroscopy

Cited by 46 publications

References 8 publications

Ethanol production from acid hydrolysates based on the construction and demolition wood waste using Pichia stipitis

Ethanol production from acid hydrolysates based on the construction and demolition wood waste using Pichia stipitis

Chemical Composition of Apricot Pit Shells and Effect of Hot-Water Extraction

Chemical modification of secondary xylem under tensile stress in the stem ofLiriodendron tulipifera

Contact Info

Product

Resources

About