The variability of the quantity of essential oil extracted from the Bosnian pine needles
2010
Nikolić, B., Institute of Forestry, Belgrade (Serbia) | Dražić, D., Institute of Forestry, Belgrade (Serbia) | Veselinović, M., Institute of Forestry, Belgrade (Serbia) | Rakonjac, Lj., Institute of Forestry, Belgrade (Serbia) | Bojović, S., Institute for Biological Research Siniša Stanković, Belgrade (Serbia)
Needle-bearing twigs were collected from three Bosnian pine populations in Montenegro, at the end of the active vegetative season, and stored at -20 deg C. Essential oil extraction from two-year-old needles of Pinus heldreichii Christ. in n-pentane (1 g of needles/1 ml n-pentane) yielded an average of 0.39 ml of liquid extract, with significant individual (0.13 ml - 0.60 ml) and populational variability (0.14 ml - 0.43 ml). There was a weak positive correlation between the quantity of extract and needle mass (r=0.30). Population Zeletin had the lowest quantity of extract (0.31 ml), as well as the lowest needle mass (0.12 g per needle). Population Bjelasica had the highest needle mass (0.18 g per needle). Population Lovćen had the highest quantity of extract (0.43 ml).
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