Polysaccharide-rich lignocellulosic material
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Polysaccharide-rich lignocellulosic material
Sample & Measurement Parameters
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.
Library Comparison
Library Search Results — Top 15 Candidates
| Rank | Match % | Compound | Formula / SMILES | Library Preview | Action |
|---|---|---|---|---|---|
| Loading library candidates... | |||||
Peak Analysis
★ = Literature-supported assignment| # | Wavenumber (cm⁻¹) | Absorbance | Assignment | Citation | Confidence | |
|---|---|---|---|---|---|---|
| 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
Comments and follow-up evidence
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