Carbohydrate — FTIR absorption peaks and assignments
These are the characteristic FTIR wavenumbers where Carbohydrate tends to absorb, compiled from published literature and ranked by supporting evidence. Each assignment is traceable to a source (DOI) and cross-validated against our 320,000+ reference spectra and knowledge graph.
Backed by 8 cited sources
Quick answer
Carbohydrate is usually assigned by looking for a recurring cluster of characteristic peaks rather than one exact textbook number. The table below shows where the literature most often places this group in FTIR, ranked by accumulated evidence.
Characteristic FTIR peaks for Carbohydrate
| Wavenumber (cm⁻¹) | Supporting facts | Cited sources | Top confidence |
|---|---|---|---|
| 897 | 28 | 28 | 1.0 |
| 1730 | 19 | 17 | 1.0 |
| 1030 | 19 | 16 | 1.0 |
| 1050 | 18 | 17 | 1.0 |
| 900 | 18 | 15 | 1.0 |
| 1735 | 17 | 14 | 1.0 |
| 898 | 16 | 16 | 1.0 |
| 1000 | 16 | 15 | 1.0 |
| 1200 | 15 | 14 | 1.0 |
| 2900 | 14 | 14 | 1.0 |
| 1100 | 14 | 14 | 1.0 |
| 1032 | 13 | 12 | 1.0 |
| 1640 | 13 | 12 | 1.0 |
| 896 | 13 | 11 | 1.0 |
| 1370 | 12 | 12 | 1.0 |
| 1080 | 12 | 12 | 1.0 |
| 895 | 12 | 10 | 1.0 |
| 3400 | 11 | 11 | 1.0 |
| 1035 | 11 | 11 | 1.0 |
| 1740 | 11 | 11 | 1.0 |
| 1047 | 11 | 11 | 1.0 |
| 1700 | 11 | 10 | 1.0 |
| 1150 | 10 | 10 | 1.0 |
| 1732 | 10 | 10 | 1.0 |
| 1160 | 10 | 10 | 1.0 |
| 1420 | 10 | 10 | 1.0 |
| 1033 | 10 | 10 | 1.0 |
| 1157 | 10 | 9 | 1.0 |
| 1425 | 10 | 8 | 1.0 |
| 1240 | 9 | 9 | 1.0 |
Showing the 30 best-supported peaks of 668 total for Carbohydrate.
Spectrum logic
A functional-group assignment becomes more confident when several expected bands appear together. Use this page to find the strongest-supported peaks, then confirm that the same sample exhibits a coherent pattern rather than a single isolated hit.
Real-world usage
These pages are useful for unknown material analysis, peak explanation in reports, polymer troubleshooting, and verifying whether a candidate material family is chemically plausible.
Common mistakes
- Using one functional-group page as a complete material verdict without checking the rest of the spectrum.
- Assuming the strongest band is always the most diagnostic one.
- Forgetting that processing, additives, aging, and mixtures can shift or broaden expected peaks.
Verification advice
Use DSC, GC-MS, or TGA when several material families share similar bands or when mixture effects make the FTIR assignment uncertain.
Literature behind these assignments
-
1200 cm⁻¹ confidence 1.0
“The FTIR bands in the region of 900fucoidan standard is due to more sulfation at 1200cm-1 are characteristic of carbohydrates equatorial at the position in C3 and C2 (Patankar, (Pielesz and Biniaś, 2010).”
The Properties of Brown Marine Algae Sargassum turbinarioides and Sargassum ilicifolium Collected From Yogyakarta, Indonesia DOI: 10.14499/indonesianjpharm30iss1pp43 -
1037 cm⁻¹ confidence 1.0
“LLM confirmed rule peak-group candidate”
Optimization of citron peel pectin and glycerol concentration in the production of edible film using response surface methodology DOI: 10.1016/j.heliyon.2023.e13724 -
1047 cm⁻¹ confidence 1.0
“AHMT230 41.44 22.39 36.01 Absorption bands at 1047 are associated with starch grains' crystalline and amorphous domains, respectively and the ratio ± =”
The effect of heat moisture treatment on crystallinity and physicochemical-digestibility properties of purple yam flour DOI: 10.1016/j.foodhyd.2021.106889 -
1000 cm⁻¹ confidence 1.0
“This present study found that a peak at wavelength 1000 shows changes in proteoglycan, as also recorded in the previous studies [26].”
Diagnosis of Osteoarthritis at an Early Stage via Infrared Spectroscopy Combined Chemometrics in Human Serum: A Pilot Study DOI: 10.3390/pr11020404 -
1240 cm⁻¹ confidence 1.0
“cm-1 related compounds have been The disappearance of the lignin peak at 1240 could be due to conjugated ketone (phenyl-carbonyl) removal (lignin that is wrapping the surface of cellulose fibres).”
Physicochemical characterisation of barley straw treated with sodium hydroxide or urea and its digestibility and in vitro fermentability in ruminants DOI: 10.1038/s41598-022-24738-w -
1741 cm⁻¹ confidence 1.0
“Keywords: cm-1, cm-1 cm-1 spectroscopy shows the CMSS hydrogel absorption peaks at 1741 1605 and 1430 which Carboxymethyl starch indicates the substitution of carboxymethyl group of modified sago starch.”
Preparation and characterization of irradiated carboxymethyl sago starch-acid hydrogel and its application as metal scavenger in aqueous solution DOI: 10.1016/j.carbpol.2015.11.028 -
3331 cm⁻¹ confidence 1.0
“Strong absorption was observed at 3279.62, 3272.35 glucose and galactose and xylose with different concentracm-1 corresponding to the hydroxyl vibration and 3331.21 tion which is dependent on many factors.”
Evaluation of the effect of soluble polysaccharides of palm kernel cake as a potential prebiotic on the growth of probiotics DOI: 10.1007/s13205-018-1362-4 -
900 cm⁻¹ confidence 1.0
“Peaksbetween900and wereassignedtothe & from the spectra before and after UV irradiation treatment (Bhat C2 carbon of pyranose ring and amino group, respectively”
Spectroscopic analyses of the influence of electron beam irradiation doses on mechanical, transport properties and microstructure of chitosan-fish gelatin blend films DOI: 10.1016/j.foodhyd.2014.09.038
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