The FT-IR technique was used to study the main functional groups of the Moringa husks and Fig. 2 shows the FT-IR spectrum obtained. In the spectrum there is a broad band centered at 3420 cm−1 assigned to O―H stretching. This functional group appears predominantly in the protein and fatty acid structures of the Moringa husks. Due to the high content of protein there is also a contribution in this region from the N―H stretching of amide groups. The peaks at
2923 and 2852 cm−1 are assigned to symmetrical and asymmetrical C―H stretching of the CH2 group present in fatty acids. The presence of this band confirms the protein structure of the Moringa husks. In the 1800 to 1500 cm−1 region there are a number of overlapping bands between 1750 and 1630 cm−1. This set can be attributed to the C O connection stretching. Owing to the heterogeneous type of seed, the carbonyl group may be linked to different neighborhoodsas part of the fatty acid portion of lipid and protein portion of the amides. The carbonyl that appears due to the lipid component in 1740 and 1715 cm−1, which can be observed in the spectrum as a small peak or shoulder part of the main band at 1658 cm−1, was assigned to the carbonyl amides in the protein portion