Table 2: Effect of shade drying on the essential oil composition of Z. armatum.

S. N. Compounda RICalculated RI [21] RTZFL
(min) 		Mean Percent of Oil (ZFL) ± SD RTZDL
(min) 		Mean Percent of Oil (ZDL) ± SD
1. α-Thujene 930 924 8.8 0.1 8.8 0.1
2. α-Pinene 932 932 9.2 7.4±0.6 9.2 3.6**±0.7
3. Camphene 946 946 9.8 0.1 - ND
4. Sabinene 972 969 10.9 2.2±0.3 10.9 3.9NS±0.8
5. β-Pinene 975 974 11.1 0.3 11.1 0.2
6. Myrcene 993 988 11.8 1.4±0.5 11.9 7.6**±0.5
7. α-Phellandrene 1005 1002 12.4 0.1 12.4 0.8
8. δ-3-Carene 1008 1008 - ND 12.7 0.1
9. α-Terpinene 1016 1014 13.1 0.2 13.1 0.9
10. β-Phellandrene 1038 1025 13.8 6.7±0.4 13.9 35.5**±4.3
11. (E)-β-Ocimene 1048 1044 14.1 14.9±0.9 14.1 1.7**±0.3
12. γ-Terpinene 1058 1054 14.7 0.3 14.8 0.8
13. Cis-sabinene hydrate 1069 1065 - ND 15.8 0.2
14. Terpinolene 1085 1086 16.9 0.1 16.9 1.8
15. Linalool 1105 1095 17.7 15.9±0.6 17.6 2.7**±0.3
16. Cis-p-menth-2-en-1-ol 1126 1118 - ND 18.8 0.8
17. Trans- p-menth-2-en-1-ol 1143 1136 19.2 0.1 19.2 0.7
18. Citronellal 1152 1148 19.7 0.1 19.7 0.4
19. Terpinen-4-ol 1183 1174 21.4 1.6±0.5 21.4 2.4*±0.7
20. Crypton 1187 1183 21.9 0.5 21.9 0.3
21. Piperitol 1197 1195 22.4 Trace 22.4 0.1
22. Trans-piperitol 1210 1207 22.7 0.1 22.7 0.8
23. Piperitone 1255 1249 24.8 1.8±0.3 24.8 1.7NS±0.3
24. Undecanal 1308 1305 - ND 26.7 22.5**±0.5
25. 2-Undecane 1310 1316 26.9 30.0±1.0 26.9 0.1**
26. (E)-Caryophyllene 1419 1417 32.1 1.2±0.3 32.1 1.7NS±0.6
27. α-Humulene 1452 1452 33.5 0.2 33.5 0.3
28. γ-Amorphene 1498 1495 34.7 0.2 34.7 0.7
29. 2-Tridecanone 1502 1495 35.3 4.7±0.6 35.2 4.4NS±0.7
30. (E,E)-α-Farnesene 1506 1505 - ND 35.7 Trace
31. Germacrene B 1554 1559 37.9 0.4 37.9 0.1
Total 90.6 - 96.9
Class of compounds - - -
Monoterpene hydrocarbons 33.8 - 57.2
Monoterpene alcohols 17.7 7.0
Oxygenated monoterpenes 2.4 - 2.9
Aliphatic compounds 34.7 - 27.0
Sesquiterpene hydrocarbons 2.0 - 2.8

aMode of identification: Retention Index on RTx-5 column; ND = Not Detected; SD=Standard Deviation; RT = Retention time; Mean values ±SD (standard deviation) followed by ** , * and NS indicate significance difference between pairs (fresh and sun dried) at p < 0.01, p < 0.05 and not significant respectively.