Pistachio is one of the most significant oil seeds from the family of Anacardicea. It is composed of a kernel and a husk. The husk has a hard layer named shell and a softer layer called hull. The kernel has a green skin with a sweet taste and occupies different portions of the kernel in various types of pistachio. The most important types of pistachio in Iran are Akbari, Kalleghoochi, Ahmadaghaei, Ohadi, Badami Zarand, Momtaz Khanjari Damghan,Shahpasand, Sefid Pesteh Nogh, and Ghazvini.