Table 2.
The chemical composition of bay leaf aroma profile recovered from un-treated leaves (BLCT), low-dose autoclave (BLAL), high-dose autoclave (BLAH), low-dose γ-irradiated (BLRL), and high-dose γ-irradiated (BLRH) (n = 3).
| Peak No | Average Rt (min) | Average RI | Volatile | Chemical class | BLCT % ± SE | BLAL % ± SE | BLAH % ± SE | BLRL % ± SE | BLRH % ± SE |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 2.65 | 809 | 4-Hexen-1-ol | Alcohol | 1.00 ± 0.14 | 8.73 ± 1.67 | 22.01 ± 0.98 | 3.95 ± 0.12 | 2.82 ± 0.47 |
| 6 | 3.78 | 994 | β-Terpineol | Alcohol | 0.10 ± 0.01 | 0.05 ± 0.02 | 0.03 ± 0.01 | 0.04 ± 0.001 | 0.04 ± 0.01 |
| 8 | 4.25 | 1086 | δ-Terpineol | Alcohol | 0.86 ± 0.04 | 1.21 ± 0.02 | 1.21 ± 0.11 | 0.50 ± 0.02 | 0.50 ± 0.01 |
| 9 | 4.29 | 1094 | Terpinen-4-ol | Alcohol | 2.44 ± 0.08 | 2.03 ± 0.09 | 1.48 ± 0.73 | 0.75 ± 0.04 | 0.62 ± 0.28 |
| 11 | 4.38 | 1112 | 4-Thujanol | Alcohol | 0.13 ± 0.03 | 0.80 ± 0.24 | 0.86 ± 0.20 | 0.04 ± 0.02 | 0.10 ± 0.001 |
| 12 | 4.52 | 1143 | 2,6-Octadien-1-ol, 3,7-dimethyl-, (Z)- | Alcohol | 0.09 ± 0.01 | 0.02 ± 0.01 | 0.03 ± 0.01 | 0.01 ± 0.01 | 0.03 ± 0.01 |
| 13 | 4.60 | 1158 | Nerol | Alcohol | 0.02 ± 0.01 | 0.31 ± 0.08 | 0.37 ± 0.06 | 0.10 ± 0.02 | 0.06 ± 0.01 |
| Total alcohol % | 4.64 | 13.17 | 25.99 | 5.39 | 4.17 | ||||
| 15 | 4.99 | 1236 | Methyl geranate | Ester | 38.59 ± 2.31 | 2.16 ± 0.54 | 1.47 ± 0.70 | 22.62 ± 1.30 | 29.50 ± 0.33 |
| 16 | 5.04 | 1246 | Eugenol acetate | Ester | 2.27 ± 0.10 | 24.40 ± 1.76 | 17.86 ± 2.63 | 4.32 ± 0.11 | 4.19 ± 0.39 |
| Total ester % | 40.86 | 26.56 | 19.32 | 26.94 | 33.69 | ||||
| 7 | 3.82 | 999 | Fenchone | Ketone | 6.64 ± 0.78 | 13.21 ± 0.38 | 5.41 ± 0.10 | 9.58 ± 0.22 | 8.78 ± 0.38 |
| Total ketone % | 6.64 | 13.21 | 5.41 | 9.58 | 8.78 | ||||
| 2 | 3.14 | 889 | α-Pinene | Monoterpene Hydrocarbon | 0.08 ± 0.01 | 1.38 ± 0.67 | 1.61 ± 0.38 | 0.21 ± 0.04 | 0.25 ± 0.03 |
| 3 | 3.21 | 900 | Sabinene | Monoterpene Hydrocarbon | 0.86 ± 0.10 | 9.00 ± 3.01 | 5.35 ± 1.05 | 1.35 ± 0.26 | 1.66 ± 0.16 |
| 5 | 3.68 | 977 | γ-Terpinene | Monoterpene Hydrocarbon | 0.53 ± 0.06 | 1.65 ± 1.04 | 5.38 ± 2.35 | 0.27 ± 0.01 | 0.30 ± 0.01 |
| Total monoterpene hydrocarbon % | 1.47 | 12.03 | 12.35 | 1.83 | 2.22 | ||||
| 4 | 3.53 | 953 | Cineole | Oxide/phenol/ Ether | 17.95 ± 1.77 | 16.90 ± 1.67 | 29.15 ± 0.75 | 29.09 ± 0.69 | 31.32 ± 1.34 |
| 10 | 4.30 | 1097 | Estragole | Oxide/phenol/ Ether | 1.76 ± 0.08 | 2.20 ± 0.13 | 0.85 ± 0.02 | 1.77 ± 0.001 | 1.73 ± 0.06 |
| 14 | 4.73 | 1185 | E-Anethole | Oxide/phenol/ Ether | 24.38 ± 1.47 | 11.63 ± 0.50 | 5.12 ± 0.29 | 16.99 ± 0.93 | 13.85 ± 2.00 |
| Total oxide/phenol/Ether % | 44.09 | 30.73 | 35.12 | 47.84 | 46.90 | ||||
| 17 | 5.19 | 1275 | Copaene | Sesquiterpene Hydrocarbon | 0.31 ± 0.01 | 0.67 ± 0.02 | 0.25 ± 0.04 | 0.87 ± 0.03 | 0.60 ± 0.01 |
| 18 | 5.42 | 1320 | α-Longipinene | Sesquiterpene Hydrocarbon | 0.08 ± 0.01 | 0.18 ± 0.05 | 0.09 ± 0.03 | 0.30 ± 0.03 | 0.17 ± 0.02 |
| 19 | 5.43 | 1322 | Aromandendrene | Sesquiterpene Hydrocarbon | 1.54 ± 0.01 | 3.05 ± 0.07 | 1.19 ± 0.12 | 6.37 ± 0.24 | 3.04 ± 0.05 |
| 20 | 5.45 | 1325 | α-Curcumene | Sesquiterpene Hydrocarbon | Traces | 0.12 ± 0.05 | 0.16 ± 0.001 | 0.04 ± 0.01 | 0.02 ± 0.01 |
| 21 | 5.75 | 1384 | α-Selinene | Sesquiterpene Hydrocarbon | 0.18 ± 0.01 | 0.24 ± 0.03 | 0.09 ± 0.04 | 0.43 ± 0.04 | 0.22 ± 0.02 |
| 22 | 5.78 | 1389 | Cedrene | Sesquiterpene Hydrocarbon | 0.16 ± 0.01 | 0.05 ± 0.03 | 0.03 ± 0.001 | 0.41 ± 0.24 | 0.18 ± 0.09 |
| Total Sesquiterpene Hydrocarbon % | 2.29 | 4.31 | 1.81 | 8.42 | 4.23 | ||||
The results were represented in average and SD ( ±).