Isolation of Terpenes from Norway Spruce Needles by Distillation
AbstraktA novel approach to isolation of semivolatile organic compounds from aqueous media is proposed based on combined distillation and solid phase extraction. A model compound, 1,3,5-trimethylbenzene, was concentrated with good yield on polyurethane foam coating of a cooler positioned above the boiling aqueous mixture. It was found that terpenes are released very slowly from intact Norway Spruce (Picea abies) needles even at the boil. Also microwave-assisted extraction with hexane was inefficient. The vibrational circular dichroism spectrum of compounds isolated from the needles by distillation and solid phase extraction was too complex to be easily interpreted.
Rezanka, P., & Fähnrich, J. (2003). Isolation of Terpenes from Norway Spruce Needles by Distillation. Chemické Listy, 97(2). Získáno z http://ww.w.chemicke-listy.cz/ojs3/index.php/chemicke-listy/article/view/2254