Chemical analyses of various oaks (Quercus ssp.) growing extensively in the Eastern Black Sea region

In this work, the quantities of chemical composition heartwood, sapwood and bark of Strendzha Oak (Quercus hartwissiana) ,Sessile Oak (Quercus petraea) and East Blacksea Oak (Quercus pontica ), which are common oaks in the East BlackSea Region, has been determined by means of standart methods. Additionally, chemical components of the heartwood, sapwood and bark of Strendzha Oak (Quercus hartwissiana) was analysised GC-MS.In the studies about Sesuile Oak The highest holocellulose amount and cellulose amount is sapwood; The highest lignin amount, cold water soluble, hot water soluble, 1% NaOH soluble, alcohol soluble and hegzan soluble have been in bark.According to the results that have been acquired from East Black Sea Oak; The highest holocellulose amount and cellulose amount is in heartwood; The highest lignin amount, cold water soluble, hot water soluble, 1% NaOH soluble, alcohol soluble and hegzan soluble have been bark.As a result of GC-MS analyses, the numbers of identified compounds in heartwood, sapwood and bark of Strendzha Oak were 40, 31 and 48 units, respectively. These compounds contained mainly aromatic, acidic, steroid, tepene, oxygenated and hydrocarbon structures.The compounds identified in heartwood with higher ratio were octacosane (5.50%), heptacosane (4.44%) and hexacosane (2.76%) while those in sapwood were found octacosane (7.09%), triacontane (6.50%) and heptacosane (4.72%). Additionally, it was found that vitamin E (5.38%), stigsmastan-3,5-dien (2.53%) and campestrol (1.85%) were found higher ratio in the bark of Strendzha Oak.