Objective:To analyze the phytochemicals that are present in two medicinal plants which are used for the treatment of respiratory tract infections by gas chromatography-mass spectrometer.Methods:The plant leaves were e...Objective:To analyze the phytochemicals that are present in two medicinal plants which are used for the treatment of respiratory tract infections by gas chromatography-mass spectrometer.Methods:The plant leaves were extracted with n-hexane and methanol separately.Both extracts were analyzed for present phytochemicals using the method described by Harborne,1985 while only methanol extracts were subjected to gas chromatography-mass spectrometer analysis.Results:Phytochemical screening of the methanolic extracts of Terminalia macroptera(T.macroptera)revealed the presence of glycosides,tannins,flavonoids,saponins and steroids while that of Dioclea reflexa(D.reflexa)showed the presence of flavonoids,saponins and steroids.The n-hexane extracts were devoid of the screened phytochemicals.Twelve and twenty-five compounds were identified in the leaves of T.macroptera and D.reflexa respectively.These compounds were fatty acids,fatty acid esters,other esters,heterocyclics and phenolics.The most abundant compound in T.macroptera was benzenetriol(53.30%)while the predominant compounds in D.reflexa were dodecanoic acid,methyl ester(15.31%),5,5,8a-trimethyl-3,5,6,7,8,8a-hexahydro-2H-chromene(9.73%),10-octadecenoic acid,methyl ester and 2-hexadecanoic acid,methyl ester(8.95%).Benzofuran,2,3-dihydro,3,7,11,15-tetramethyl-2-hexadecen-1-ol and hexadecanoic acid,methyl ester were common in both plant extracts.The antimicrobial properties of the leaves of these plants could be responsible for their use in the treatment of respiratory tract infections.Conclusions:Some of the identified phytochemicals in the plant leaves are responsible for its use in the treatment of respiratory tract infections.展开更多
文摘Objective:To analyze the phytochemicals that are present in two medicinal plants which are used for the treatment of respiratory tract infections by gas chromatography-mass spectrometer.Methods:The plant leaves were extracted with n-hexane and methanol separately.Both extracts were analyzed for present phytochemicals using the method described by Harborne,1985 while only methanol extracts were subjected to gas chromatography-mass spectrometer analysis.Results:Phytochemical screening of the methanolic extracts of Terminalia macroptera(T.macroptera)revealed the presence of glycosides,tannins,flavonoids,saponins and steroids while that of Dioclea reflexa(D.reflexa)showed the presence of flavonoids,saponins and steroids.The n-hexane extracts were devoid of the screened phytochemicals.Twelve and twenty-five compounds were identified in the leaves of T.macroptera and D.reflexa respectively.These compounds were fatty acids,fatty acid esters,other esters,heterocyclics and phenolics.The most abundant compound in T.macroptera was benzenetriol(53.30%)while the predominant compounds in D.reflexa were dodecanoic acid,methyl ester(15.31%),5,5,8a-trimethyl-3,5,6,7,8,8a-hexahydro-2H-chromene(9.73%),10-octadecenoic acid,methyl ester and 2-hexadecanoic acid,methyl ester(8.95%).Benzofuran,2,3-dihydro,3,7,11,15-tetramethyl-2-hexadecen-1-ol and hexadecanoic acid,methyl ester were common in both plant extracts.The antimicrobial properties of the leaves of these plants could be responsible for their use in the treatment of respiratory tract infections.Conclusions:Some of the identified phytochemicals in the plant leaves are responsible for its use in the treatment of respiratory tract infections.
