Extraction technique as well as extraction solvent determine to a large extent the amount and class of bioactive compounds extracted from plants. Many techniques are available which are used in extracting bioactive compounds from medicinal plants. These techniques are broadly classified as conventional and non-conventional techniques. The conventional techniques include soxhlet extraction, maceration, hydro-distillation and solvent-solvent extraction. Due to the attendant limitations of the conventional techniques some of which include; lengthy extraction time, requirement of costly and high purity solvents, evaporation of the large amount of solvent, poor extraction selectivity and thermal decomposition of thermo labile compounds (Luque de Castro and Garcia-Ayuso, 1998), more promising extraction techniques referred to as the nonconventional techniques were developed which include ultrasound assisted extraction, enzyme-assisted extraction, microwave-assisted extraction, pulsed electric field assisted extraction, supercritical fluid extraction and pressurized liquid extraction (Azmir et al., 2013). According to Bushra et al.,(2009) and Jakopic et al.,(2009), extraction yields, polyphenolic contents as well as antioxidant activities of most plant materials strongly depends on the nature of extraction technique and solvent. Recovery of antioxidant compounds from plant materials can be accomplished through various extraction techniques taking into account their chemistry and uneven distribution in the plant matrix (Bushra et al., 2009). Also, the amount of the antioxidant components that can be extracted from a plant material is mainly affected by the vigor of the extraction procedure which may differ from one sample to another (Bushra et al., 2009).