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Table 3 FT-IR spectrum of Moringa oleifera leaf extract. Source: [61]

From: A review on the efficacy of Ocimum gratissimum, Mentha spicata, and Moringa oleifera leaf extracts in repelling mosquito

Major peaks (cm−1)

Functional groups

Bonding pattern

3000–3500

Phenols

OH stretch

3200–3500

Alcohols

O–H stretch

3100–3500

Amines

N–H stretch

2800–3000

Alkanes

C–H stretch

2500–2750

Carbonyl

H=CO stretch

1625–1750

Ketones/esters

C=O bonds

1375–1500

Alcohol

Nitro

O–H band

N–O symmetric stretch

1244.40

Carbonyl

C–O stretch

1125–1250

Aromatics

Aromatic ring (Ar–O)

675.09–900

Aromatics

Aromatic rings