Tıbbi ve aromatik bitkiler, doğadan toplananlar ve yetiştirilenler olmak üzere iki gruba ayrılır. Doğadan toplanan tıbbi ve aromatik bitkiler, orman gibi doğal yerlerde kendiliğinden yetişen bitkilerdir. Akdeniz bölgesinde bulunan bu bitkilerden ikisi Laurus nobilis L. ve Myrtus communis L'dir. Bu çalışma, defne ağaçları ve mersin bitkilerinden elde edilen uçucu yağların oran ve bileşenlerini belirlemek amacıyla yapılmıştır. Türkiye'nin Osmaniye ili florasında yoğun olarak yetişen bu bitkilerden elde edilen yapraklar endüstriyel uygulamalarda büyük damıtma kazanlarında (imbik) su buharı distilasyon yöntemi uygulanarak uçucu yağları elde edilmiştir. İmbik yöntemleriyle elde edilen uçucu yağ oranları defne bitkisinde %0,9-1,4 ve mersin bitkisinde %0,4-0,8 arasında gözlenmiştir. Uçucu yağ bileşenleri incelendiğinde defnenin ana bileşenleri α-pinene (%5,75), sabinen (%8,9), eucalyptol (%44,42) ve α-terpinyl asetat (%17,37) olarak belirlenmiş olup, mersin bitkisinin ana bileşenleri ise, α-pinene (%50,79), limonene (%4,08), eucalyptol (%31,66), α-terpineol (%5,57), α-terpinyl acetate (%2,37) olarak belirlenmiştir.

Medicinal and aromatic plants are divided into two groups, collected from nature and grown.Medicinal and aromatic plants collected from nature grow spontaneously in natural places such as forests. Two of these plants found in the Mediterranean region are Laurus nobilis L. and Myrtus communis L. This study was conducted to determine the ratios and components of essential oils obtained from laurel trees and myrtle plants. The leaves obtained from these plants, which grow intensively in the flora of Osmaniye Province of Turkey, were obtained by using the water vapor distillation method in large distillation boilers (retort) in industrial applications and their essential oils were obtained. The essential oil ratios obtained by retort methods were observed dec 0.9-1.4% in laurel plant and 0.4-0.8% in myrtle plant. The components of essential oil were examined, the Laurel main components α-pinene (5.75%), sabine (the to 8.9%), eucalyptol (44.42%) and α-acetate terpinyl (17.37%) is designated as the main components of the plant and Mersin, α-pinene (50.79%), limonene (4.08%), eucalyptol (31.66%), α-terpineol (5.57%), α-terpinyl acetate (2.37%) has been identified as.

In this study, the effects of some herbal wastes such as daphne (Laurus nobilis), thyme (Origanum onites) and cumin (Cuminum cyminum) on the yield of Pleurotus ostreatus were investigated. While compost formula consisted 43% wheat straw+ 43% poplar dust+ 10% wheat bran+ 4% gyps mixture was used as the control group, 20% to 40% of herbal waste was added to this formula in the experiment groups. Total number of mushroom was counted in both the experiment and the control groups. Then, the harvested mushrooms were weighed and morphological features of caps were measured and recorded. As a result of obtained data, while it was detected that compost contained 20% cumin waste had the highest number of primordium (34), the control group had the lowest number of primordium (21 items). The highest biological yield was detected as 35.8% in the group contained 20% cumin waste. The lowest biological yield was detected in the control group with 24.6%.