193 ranged from 13.21-20.90%, 5.13-9.81% and 2.11-3.89%, respectively. The extracted oils had an average iodine value (g of I/100 g of oil) of 96.4-106.3; density at 24 °C, 0.87-0.93 mg/mL; refractive index (40 °C), 1.4655-1.4790; saponification value, 189.1-199.4 mg of KOH/g oil; unsaponifiable matter, 0.59-0.88%; free fatty acid (mg of KOH/g oil), 0.41-1.28; and color (1-inch cell), 1.31-2.96R 1 14.8-29.8Y. With regard to the oxidation state, the tested oils showed values for specific extinction at 232 and 268 nm, 2.30-3.42 and 0.82-1.04, respectively, while the peroxide value was 1.0-2.32 meq O 2 /kg and, p-anisidine was 1.22-1.90. The major fatty acid found in the oils was oleic acid (62.34-80.97%) followed by linoleic (13.13-30.33%), palmitic (3.35-5.93%), linolenic (0.73-1.03%) and stearic (1.10-1.68%) acids. The contents of α-, γ-, and δ-, tocopherols in the oils ranged from 14. 8-40.4, 330.8-520.8 and 28.5-60.2 mg/kg, respectively. The results of our present investigation revealed that apricot seed is a potential source of oil which can be used both for edible and oleochemical applications.
KEY-WORDS: Apricot (Prunus armeniaca L.) -Fatty acids -Oxidation parameters -Tocopherols.
INTRODUCTIONPrunus, belonging to family Rosaceae, is a large genus consisting of about 430 species of both evergreen and deciduous trees and shrubs, distributed across the Northern Hemisphere and into the sub-tropics and tropic regions around the globe Wen, 2001, Wen et al., 2008). Apricot (Prunus armeniaca L.) is also an important fruit tree of the family Rosaceae. However, it is mostly grown in Mediterranean countries as well as in Pakistan, USA, Iran and Russia (Hussain et al., 2011). The plant is well known for its great medicinal and economical importance. For example, its different parts are used in traditional medicine for the treatment of a variety of common diseases such as cough, asthma, bronchitis, anemia and fever (Fazlin et al., 2002, Panda, 2004Erdogen-Orhan and Kartal, 2011).Apricot kernels, after removing the stone, are used as appetizers or used as food additives (Demir and Cronin, 2005;Asma et al., 2007). The seed Se han analizado las características físico-químicas de aceites de semillas de frutos de cuatro variedades diferentes de albaricoque, Halmas, Nari, Travet y Charmagzi (Prunus armeniaca L.). La producción de aceites de las semillas de albaricoque (hueso) osciló entre 32,23-42,51%, mientras que las proteínas, fibra y cenizas dieron valores de 13,21-20,90%, 5,13-9,81% y 2,11-3,89%, respectivamente. Los aceites extraídos presentaron valores promedio de índice de yodo, de 96,4-106,3 (g de I/100 g de aceite); densidades a 24 °C de 0,87-0,93 mg/mL, índices de refracción (40 °C) de 1,4655-1,4790; índices de saponificación de 189.1-199,4 (mg KOH/g de aceite), materia insaponificable de 0,59-0,88%, valores de acidez libre de 0.41-1.28 (mg de KOH /g de aceite), y valores de color de 1,31-2.96R 14,8-29,8Y (celda de 1 pulgada). Con respecto al estado de oxidación de los aceites estudiados, estos mostraron valores ...