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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