Molecular Spectroscopic (FTIR and UV-Vis) and Hyphenated Chromatographic (UHPLC-qTOF-MS) Analysis and In Vitro Bioactivities of the Momordica balsamina Leaf Extract

Table 4

FTIR peak values and functional groups in methanolic extracts of M. balsamina [31, 33, 42, 43].

No.	Frequency ranges (cm^−1)	Frequency peak values (cm^−1)	Vibration/bond	Specific functional group	Chemical compound
1	3600–3200	3384.84	O–H stretch	Alcohols, phenols (hydrogen bonding)	Aromatic
	3400–3250	3384.84	N–H stretch	1°, 2° amines and amides	Amines and amides
2	3000–2850	2938.72	C–H stretch	Alkanes	Aliphatic
3	2270–1940	2039.40	C≡C stretch	Alkynes	Aliphatic
4	1680–1620	1637.18	C=C stretch	Alkene	Aliphatic
5	1320–1000	1084.85	C–O stretch	Alcohols, carboxylic acids, esters, and ethers	Acid and alcohol
6	1320–1000	1029.61	C–O	Alcohols, carboxylic acids, esters, and ethers	Acid and alcohol