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Table 2 GC-MS analysis of the phenolic compounds of APE

From: Protective effects of Egyptian cloudy apple juice and apple peel extract on lipid peroxidation, antioxidant enzymes and inflammatory status in diabetic rat pancreas

NO Compounds Retention time (min.) Sum area % Molar mass (gmol−1)
1 (+)-Catechin [(2R,3S)-3′,4′,5,7-tetrahydroxyflavan-3-ol] 14.82 1.13 290
2 Resorcinol (Benzene-1,3-diol) 14.31 1.69 110
3 Hydroquinone, 2,6-di-tert-butyl- [1,4 benzenediol, 2,6-bis (1,1 dimethylethyl)] 14.8 2.31 222
4 Resveratrol (3,5,4′-trihydroxy-trans-stilbene) 22.3 0.5 228
5 Fisetin (3, 7, 3′, 4′-tetrahydroxyflavone) 18.31 0.56 286
6 Cyanidin cation [2-(3,4-dihdroxyphenyl)-3,5,7-trihydroxychromenylium] 18.29 1.21 287
7 Butylated hydroxytoluene (2,6-Bis(1,1-dimethylethyl)-4-methylphenol) 19.94 1.91 220
8 Patchoulene [1H-3a,7methanoazoulene, 2,3,6,7,8a hexahydro-1,4,9,9 tetramethyl-(1.alpha., 3a. alpha., 7. alpha., 8a. beta)] 12.01 5.99 204
9 Sinapic acid [3-(4-hydroxy-3,5-dimethoxyphenyl)prop-2-enoic acid] 11.89 3.89 224
10 Geranyl isovalerate (Trans-3,7 dimethyl-2,6-octadien-1-YL isopentanoate) 16.29 0.73 238
11 β-Humulene (1,4,4-trimethyl-8-methylenecycloundeca-1,5-diene) 11.43 4.81 204