Use of Iranian Milkweed Seed Oil to Increase Oxidative Stability of Olive Cultivar Roghani Oil
2016
Azizpour, Mehran | Najafzadeh, Mahmoud | Yolmeh, Mahmoud | Sangatash, Masoomeh Mehraban
This study aimed to evaluate fatty acid composition and physicochemical properties of Iranian milkweed seed oil (IMSO) and olive cultivar Roghani oil (OCRO). The extraction yield and unsaturated fatty acids content of IMSO were 21.9 % (dry basis) and 65 %, respectively. The monounsaturated fatty acids/polyunsaturated fatty acids ratio, calculated oxidizability, peroxide value, unsaponifiable matter, total tocopherol content, total phenolic content, total sterol, wax content, carbonyl value, conjugated diene value and oxidative stability index of IMSO and OCRO were measured. The results indicated that oxidation stability (OS) of IMSO (6.46 h) was significantly higher than OS of OCRO (5.53 h). In addition, application of IMSO to OCRO resulted in higher OS that was the greatest after 10 % addition of IMSO.
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