“…Redd and Hendrix (1993) reported that a small amount of the d-limonene was very effective in the germicide treatment of waste water. It is well known that terpenes which constitute the major part of citrus oils have a strong antifungal and antioxidant activities (Zia-ur-Rehman, 2006;Pernice, Boriello, Ferracane, Borrelli, & Cennamo, 2009;Viuda-Matros, Ruiz-Navajas, Fernández-López, & Pérez-Álvarez, 2008). Few studies have been conducted on extraction of citrus essential oils in general and oil from orange peel in particular (Ferhat, Meklati, Smadja, & Chemat, 2006;Berna, Tárrega, Blasco, & Subirats, 2000), although studies on the deterpenation or separation of the different hydrocarbons composing citrus oils are more abundant (Diaz, Espinosa, & Brignole, 2005;Danielski et al, 2008;Arce, Pobudkowska, Rordíguez, & Soto, 2007;Dugo et al,1995;Raeissi & Peters, 2005).…”