الفهرس 
Chemical Composition of SeedsOnly 14 pages are availabe for public view
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Abstract
Two sunflower seed (Helianthus annuus) varieties, namely, Majak and Faiumy were used in this work. Majak was obtained from Kafr El-Sheikh Research Station and it planted in 1990 in Kafr El-Sheikh area, the Faiumy was obtained from Faium. Chemical and technological studies were performed to figure out the possibility of utilizing the defatted kernel of these seeds. The obtained results led to the following conclusions : 1 - The chemical composition of Majak and Faiumy sunflower seed (kernel and hull) was studied before and after ether extraction. The obtained values of crude fat, crude protein, non-protein nitrogen, crude fiber and ash were 0.0, 60.44, 1.71, 7.5, 6.55 % (in defatted kernel) and 0.0, 5.36, 0.86, 45.9, 2.66 % (in defatted hull) in case of Majak and the values of Faiumy were 0.0, 51.45, 1.7, 7.01, 6.63%(in defatted kernel) and 0.0, 5.34, 0.85, 47.14, 2.76% (in defatted hull) respectively. 2- To recover the highest yield of protein from Majak and Faiumy seeds, it was necessary to use 0.1 N sodium hydroxide as a solvent at pH 9.0 in a ratio of 1 :20 (wlv) for seed sample to solvent for one hour at room temperature (30.0 ”C). The isoelectric point of the extracted protein was found at pH 4.0 . 3- The protein content of seed protein isolated from Majak and Faiumy seeds were 93.74% and 92.94% respectively.