pISSN 1225-7117
eISSN 2288-8268
1. Polarity of representative components according to essential oil [19,21,23–25]
| Sample | Component | Polarity |
|---|---|---|
| Pine needles | β-pinene | Nonpolar |
| Bornyl acetate | Polar | |
| Twigs | β-phellandrene | Nonpolar |
| Citronellol | Polar | |
| Bark | Catechin | Polar |
| Caffeic acid | Polar |