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Polysaccharide-rich lignocellulosic material

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Result No.: 20260302110802378893694 Owner: blessy Comments: 0
FTIR Analysis Report Moderate confidence

Polysaccharide-rich lignocellulosic material

Sample & Measurement Parameters

Report No. 20260302110802378893694
Date
Spectral Range (cm⁻¹) N/A
Baseline AsLS baseline correction
Library match 75%

Identification Result

75%

The FTIR spectrum is consistent with a polysaccharide-rich material, likely a lignocellulosic sample containing cellulose/hemicellulose and lignin. The broad O–H stretch at ~3337 cm⁻¹, the intense C–O/C–C/C–O–C envelope between 1029 and 1157 cm⁻¹, and CH₂ deformation bands at 1314 and 1428 cm⁻¹ are characteristic of this material class. The band at 1620 cm⁻¹ may arise from lignin aromatic ring vibrations or adsorbed water, while the library search indicates a sugar-like backbone, supporting a complex biomass rather than a single synthetic compound FTIR In-Depth Interpretation was not selected for this task, so this section shows the library-search result only and no deep AI interpretation was run.

Detailed interpretation

  • Top library match: (3R,4R,5R,6R)-6-(hydroxymethyl)oxane-2,3,4,5-tetrol #24298
  • The exact proportions of cellulose, hemicellulose, and lignin cannot be quantified from the present data.
  • The band at ~1029 cm⁻¹, in addition to lignin alcohol deformation, may include a silanol contribution [8], suggesting a possible minor inorganic additive or contamination.
  • The assignment of the 1620 cm⁻¹ band to lignin aromatic structures is plausible but remains ambiguous due to potential overlap with amide I or water bending modes.

Recommended next steps: Perform a wet chemical analysis (e.g., Van Soest fiber analysis) or thermogravimetric analysis to confirm the lignocellulosic composition. If inorganic contamination is suspected, acquire EDX or XRF data to check for Si or other elements. Consider collecting a high‑quality ATR spectrum with extended baseline for more accurate differentiation of the components in the C–O envelope region.

Library Comparison

Library spectrum will appear here.

Library Search Results — Top 15 Candidates

Rank Match % Compound SMILES Spectrum No. Action
Loading library candidates...

Peak Analysis

★ = Literature-supported assignment
# Wavenumber (cm⁻¹) Absorbance Assignment Citation Assignment status
1 · 3337 0.87 - - -
2 · 1054 0.61 - - -
3 · 1029 0.61 - - -
4 · 1620 0.57 - - -
5 · 1106 0.43 - - -
6 · 1157 0.27 - - -
7 · 1314 0.22 - - -
8 · 1428 0.20 - - -

Appendix — Raw Spectrum

Raw sample spectrum
Generated by FTIR.fun — Report #20260302110802378893694
Discussion

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