Table 1 FTIR spectral peaks and corresponding functional groups.

From: Evaluating the efficacy of Chenopodium murale plant extract in inhibiting Streptococcus mutans and reducing dental caries risk

Wavenumber (cm−1)

Functional group

Description

3357

O–H (hydroxyl)

Indicates the presence of alcohols or phenols

2856

C–H (alkane)

Associated with alkane groups

1639

C=O (carbonyl)

Indicates the presence of carbonyl compounds

1579

N–H (amine)

Suggests the presence of amine groups

1367

C–C stretch (alkene)

Indicates the presence of alkenes

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