The methanolic fruit extract of Tetrapleura tetraptera was analyzed for the presence of phytocompounds, their bioactivity, the functional groups involved in this activity, and its amino acid profile using standard procedures. Phytochemicals such as tannins, phenols, flavonoids, and alkaloids were identified as being highly present. Gas chromatographic-mass spectrometric (GC-MS) analysis identified 16 bioactive compounds, with 2-thiopheneethanol (58.77%) being the most abundant. Curcumin, with the most diverse pharmacological role, and other bioactive compounds such as cedren-13-ol, 8 (1.56%), N-benzyl stearamide (4.46%), a prominent fatty acid amide hydrolase (FAAH) inhibitor; pthalic acid, butyl undecyl ester (1.49%); and phenol, 2, 6-bis (1,1 dimethyl ethyl) (1.46%), were also present. Fourier transform infrared (FTIR) analysis confirmed the presence of alkanes, esters, benzene rings, aliphatic, sulfonic acid, and methylene chains. Also, the amino acid analysis of the T. tetraptera revealed that the fruit contains 18 amino acids. Leucine (4.20%), phenylalanine (3.37%), and valine (3.25%) were the most abundant essential amino acids identified, with glutamic (7.20%) and aspartic acid (5.61%) having the highest concentrations as non-essential amino acids. This therefore indicates that T. tetraptera fruit could be used as a pharmacological or therapeutic agent as well as a dietary condiment, particularly at this time when there is a demand for novel protein sources. Keywords: Tetrapleura tetraptera, phytochemicals, GC-MS, FTIR, amino acid, curcumin
This study was designed to apply the highly sophisticated biological and chemical characterization techniques–(GC-MS) Gas chromatography-mass spectrometry and FTIR spectroscopy to screen for bioactive phytocompounds present in ethanol and methanol extracts of U. lobata .The leaves of the plant were collected from a farm in Umuode village in Osisioma Ngwa local government area of Abia state, Nigeria. Ethanol and methanol extracts of the leaves were prepared and analyzed using Buck M910 Gas chromatography system with HP-5MS column (30m in length x250µm in diameter x 0.25µm in thickness film). Analysis of functional groups in the phytocompounds were done using Buck scientific M530 USA FTIR.12 vibrational functional groups were revealed by the FTIR screening in the ethanol and methanol extracts of U. lobata leaves. Some of the functional groups were indicative of alcohols, phenols, aromatic compounds, unsaturated hydrocarbons, vinyl ethers, amines, isonitriles and aliphatic compounds. GC-MS analysis of the ethanol leaf extract revealed 41 bioactive compounds with the following being most abundant, 9-octadecenoic acid(16.8%), dodecenoic acid(13.43%),n-hexadecanoic acid(11.73%), octadecanoic acid (9.78%), 1-docosene(9.57%) while the methanol extract revealed 47 bioactive compounds with the following having the highest abundance, n-hexadecanoic acid (26.65%) and (9.11%), dodecanoic acid(6.89%), 1-docosene(6.06%), erucic acid(4.09%).These phytocompounds and many others present in the leaf have been reported to possess multiple therapeutic activities. This therefore explains the use of this leaf in ancient medicine to treat numerous disease conditions. It further implies that the leaf could be exploited for the formulation of therapeutic molecules. Keywords: Urena lobata, GC-MS, FTIR, Spectroscopy, Phytocompounds, Functional group, Phytoconstituents
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