How can you identify protein from FTIR?

Quick answer

protein is usually reported with a recurring pattern of peaks and functional-group evidence. The most useful approach is to cross-check at least two characteristic peaks before treating it as a match, then verify whether the full spectrum still fits the same material family.

Peak interpretation

Possible materials / groups

Spectrum logic

The logic here is evidence aggregation: repeated literature mentions of protein, repeated peak positions, and repeated functional-group associations. A strong material hypothesis should still be supported by multiple peaks that agree with each other, not by one headline band alone.

Real-world usage

This page is designed for polymer identification, incoming-material QC, unknown plastic analysis, recycled-content review, and literature-backed interpretation of reference spectra.

Common mistakes

• Calling a material match too early because one famous peak is present.
• Ignoring sample prep, fillers, oxidation, water, or additives that can change the apparent pattern.
• Using literature evidence without checking whether your own sampling mode and spectrum quality are comparable.

Verification advice

Use DSC, GC-MS, or TGA to validate the material hypothesis when the peak pattern is ambiguous or mixed.

Literature behind this page

• 信頼度 1.0

  protein

  Fourier transform infrared spectroscopy coupled with machine learning classification for identification of oxidative damage in freeze-dried heart valves DOI: 10.1038/s41598-021-91802-2
• 信頼度 0.9

  protein

  van Thor 等 - 2005 - Assignments of the Pfr-Pr FTIR difference spectrum DOI: 10.1021/jp052323t
• 信頼度 0.9

  protein

  Bergo 等 - 2009 - Active Water in Protein-Protein Communication with DOI: 10.1021/bi802180a.
• 信頼度 0.9

  protein

  Malferrari 等 - 2012 - A New Method for D2OH2O Exchange in Infrared Spec DOI: 10.1155/2012/791342
• 信頼度 0.9

  protein

  In‐line monitoring of protein concentration with MIR spectroscopy during UFDF DOI: 10.1002/elsc.202200050
• 信頼度 0.9

  protein

  Sasimowski 等 - 2020 - Analysis of Selected Properties of Biocomposites B DOI: 10.3390/ma13184182
• 信頼度 0.9

  protein

  Protein Conformation in Amorphous Solids by FTIR and by Hydrogen/Deuterium Exchange with Mass Spectrometry DOI: 10.1529/biophysj.108.139899
• 信頼度 0.9

  protein

  Usoltsev 等 - 2020 - FTIR Spectroscopy Study of the Secondary Structure DOI: 10.3390/biom10040606
• 信頼度 0.8

  protein

  Cacao 等 - 2013 - High-Resolution, High-Throughput, Positive-Tone Pa DOI: 10.1371/journal.pone.0056835
• 信頼度 0.8

  protein

  Onodera 等 - 2007 - Label-free detection of protein-protein interactio DOI: 10.1021/la7022192