Citrus seed oils of Shahsavar orange, Shiraz lemon, Jayroft grapefruit and the seed oils of orange, lemon, and grapefruit wastes of Afsnoreh,l & 1, and Senus factorios investigated. The proximate composition of seeds determined after drying in VUClium OWl! and dehulling. seeds of Shahsavar orange had the highest oil level (44.8%). Oil extractability of 3 solvents:
hexane, petroleum ether, and 1: 1 mixture of them compared. 1:1 mixture of
hexane and petroleum ether had significantly highest yield. Physical and chemical characteristics of raw and refined citrus seed oils determined and the effect of refining on each attribute with t-student test studied, which showed
the significant difference between them in all aspects. Refined citrus seed oils had low but significant differences in all characteristics except in acidity and colour value. Citrus seed oils mixed with cotton seed and soybean oils and bleached, the 3:2 and 1:1 ratios with cotton seed and soybean oils were the
most effective ones, respectively. Orange and grapefruit seed oils had highest and lowest unsaturated fatty acids, respectively. The dominant fatty acid was palmitic in grapefruit and lemon, and linoleic in orange oil. Linolenic acid
content variation was between 2.1 (05.1, which the highest and lowest level of it belonged to lemon and grapefruit seed oils, respectively. Cu and Fe content of refined oils measured by atomic absorption spectrometry and the highest level of them found in lemon seed oil. Grapefruit and lemon seed oils were the most and least stable oils in 60:t 1 0 C oven test, respectively.
)