Table 2.
Comparison among the compounds from extracts of Mikania Micrantha and Ipomoea cairica.
| Compounds | Mikania Micrantha | Compounds | Ipomoea cairica | ||||||
|---|---|---|---|---|---|---|---|---|---|
| RI | RIlit | Identification methods | Relative content of compositions (%) | RI | RIlit | Identification methods | Relative content of compositions (%) | ||
| Phenols | Esters | ||||||||
| Phenol | 1,053 | 105151 | MS/RI/Std | 13.45 | Methyl benzoate | 1,105 | 110152 | MS/RI | 0.08 |
| o-Cresol | 1,066 | 106353 | MS/RI | 8.68 | 2-Methyl phenyl benzoate | 1900 | – | MS | 15.75 |
| p-Cresol | 1,081 | 108053 | MS/RI | 6.7 | 2-Methyl-hexadecane | 1658 | 165552 | MS/RI | 0.85 |
| 2,6-Dimethylphenol | 1,108 | 110754 | MS/RI | 3.72 | Dibutyl phthalate | 1915 | 191455 | MS/RI | 1.81 |
| 2-Tert-butyl-6-methylphenol | 2056 | – | MS | 1 | Alcohols | ||||
| Esters | Glycerol | 1,132 | 112956 | MS/RI | 0.18 | ||||
| Methyl benzoate | 1,103 | 110152 | MS/RI | 0.03 | Alkanes | ||||
| Methyl cinnamate | 1,305 | 130457 | MS/RI | 1.97 | Dodecane | 1,199 | 120058 | MS/RI | 1.89 |
| Alcohols | Tetradecane | 1,402 | 140059 | MS/RI | 1.66 | ||||
| Ethylene glycol | 1,152 | – | MS | 3.52 | Octadecane | 1801 | 180060 | MS/RI | 1.05 |
| Acids | 1-Nonadecene | 1892 | 189361 | MS/RI | 2.01 | ||||
| Hydroxyacetic acid | 1,283 | – | MS | 4.66 | Hexadecane | 1785 | 178462 | MS/RI | 0.79 |
| Lactic acid | 1,490 | 1,491.163 | MS/RI | 15.95 | Acids | ||||
| Nonanoic acid | 1587 | 1584.463 | MS/RI | 0.65 | Lactic acid | 1,495 | 1,491.163 | MS/RI | 0.18 |
| Benzoic acid | 1688 | 168764 | MS/RI/Std | 19.36 | Glycolic acid | 1,510 | 1508.663 | MS/RI | 0.47 |
| Succinic acid | 1759 | 1757.663 | MS/RI | 9.88 | Decanoic acid | 1553 | 155565 | MS/RI | 5.6 |
| Lauric acid | 1883 | 188463 | MS/RI | 1.66 | Benzoic acid | 1688 | 168764 | MS/RI/Std | 0.23 |
| Salicylic acid | 1961 | 1965.363 | MS/RI | 3.32 | Succinic acid | 1755 | 1757.663 | MS/RI | 2.12 |
| Phthalic acid | 2,135 | 2,137.263 | MS/RI | 1.69 | Cinnamic acid | 1787 | 1786.963 | MS/RI/Std | 47.56 |
| Gallic acid | 2,821 | 2,822.863 | MS/RI | 1.03 | Lauric acid | 1885 | 188463 | MS/RI | 5.16 |
| Alkanes | Hexadecanoic acid | 1937 | 193866 | MS/RI | 5.5 | ||||
| Hexadecane | 1787 | 178462 | MS/RI | 1.9 | Stearic acid | 2,489 | 2,489.163 | MS/RI | 0.69 |
| Oximes | Tetradecanoic acid | 2,578 | 257667 | MS/RI | 0.37 | ||||
| 2-Acetylthiophene-O-methyloxime | 1975 | – | MS | 0.84 | Tannic acid | 3,006 | – | MS | 1.21 |
| Phenols | |||||||||
| 2,4-di(1,1-dimethylethyl)-phenol | 1889 | – | MS/RI | 0.44 | |||||
| Ketones | |||||||||
| (4-Hydroxyphenyl)-2-pentan-2-ketone | 2,861 | – | MS | 0.42 | |||||
RI linear retention indices on the HP-5MS column (relative to n-alkanes), RIlit retention index value was consistent with that in the literature, MS by comparing the MS with that in the NIST library, Std by comparing time and MS with those of available authentic standards. “–” not found.