How can you identify starch from FTIR?

Quick answer

starch 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 starch, 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 6.1

  starch

  The effect of heat moisture treatment on crystallinity and physicochemical-digestibility properties of purple yam flour DOI: 10.1016/j.foodhyd.2021.106889
• 信頼度 6.1

  starch

  Cao 等 - 2020 - Optimization of the preparation process of mung be DOI: 10.1515/ijfe-2020-0025
• 信頼度 6.1

  starch

  Structural modification and functional improvement of starch nanoparticles using vacuum cold plasma DOI: 10.1016/j.ijbiomac.2019.12.167
• 信頼度 6.1

  starch

  Effects of ionic liquid on the hydroxylpropylmethyl cellulose (HPMC) solid polymer electrolyte DOI: 10.1007/s11581-016-1768-0
• 信頼度 6.1

  starch

  Physicochemical properties and in vitro digestibility of potato starch after inclusion with vanillic acid DOI: 10.1016/j.lwt.2017.07.010
• 信頼度 6.1

  starch

  Hussain 等 - 2020 - Visco-thermal and structural characterization of w DOI: 10.1007/s13197-020-04327-3
• 信頼度 6.1

  starch

  Kaur 和 Gill - 2019 - Effect of high-intensity ultrasound treatment on n DOI: 10.1016/j.ijbiomac.2018.12.149
• 信頼度 6.1

  starch

  Li 等 - 2010 - Discrimination of five species of Fritillaria and DOI: 10.1016/j.molstruc.2010.01.031
• 信頼度 6.1

  starch

  Physicochemical and disintegrant properties of sodium Carboxymethyl starch derived from Borassus aethiopum (Arecaceae) shoot DOI: 10.1007/s10965-018-1565-8
• 信頼度 6.1

  starch

  Influence of acetylation on physicochemical and morphological characteristics of pigeon pea starch DOI: 10.1016/j.foodhyd.2019.105424