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A study on oil and other chemical composition of seeds for some commercial and brown colored Egyptian cottons [electronic resource].

By:

Mohamed, Amal S

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Language: English Summary language: Arabic Description: p.411-422Other title:

دراسة على الزيت و التركيب الكيماوي لبعض اصناف القطن المصري التجارية و القطن الملون البني [Added title page title]

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Journal of biological chemistry and environmental sciences, 2008 v. 3 (2) Part III [electronic resource].

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In: Journal of Biological Chemistry and Environmental Sciences 2008.v.3(2)IIISummary: This study was conducted to evaluate the physical and chemical properties of oil and some other decimal constituents of seeds in commercial and naturally brown colored Egyptian cottonseeds such as protein, gossypol, ash and moisture contents. The study also covered the determination of refractive index(RI), saponification value (SV) , iodine value (IV) and the fatty acids profiles of cottonseed oils. The results revealed that brown cottonseed had lower values of oil content, protein content, refractive index iodine value and linoleic acid percent While it had highest gossypol content (5.33 %) compared with the white varieties. Giza 45 is consider the best Egyptian cotton varieties in seed oil content. The data also, clearly revealed that the chemical composition mostly differed significantly among the varieties, especially regarding the seed oil % the average ranged between 16.4 % to 24.22 %. Also, the result showed that refractive index and saponification values of cottonseed oil (CSO) had values which were very close to each other. Since, the iodine values (g h/g oil) ranged from 105.85 to 116.62 for the oil of brown cotton and Giza 85 variety respectively, which indicates that the oil of the Egyptian cottonseed belongs to the semi-dry oil category.

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This study was conducted to evaluate the physical and chemical properties of oil and some other decimal constituents of seeds in commercial and naturally brown colored Egyptian cottonseeds such as protein, gossypol, ash and moisture contents. The study also covered the determination of refractive index(RI), saponification value (SV) , iodine value (IV) and the fatty acids profiles of cottonseed oils. The results revealed that brown cottonseed had lower values of oil content, protein content, refractive index iodine value and linoleic acid percent While it had highest gossypol content (5.33 %) compared with the white varieties. Giza 45 is consider the best Egyptian cotton varieties in seed oil content. The data also, clearly revealed that the chemical composition mostly differed significantly among the varieties, especially regarding the seed oil % the average ranged between 16.4 % to 24.22 %. Also, the result showed that refractive index and saponification values of cottonseed oil (CSO) had values which were very close to each other. Since, the iodine values (g h/g oil) ranged from 105.85 to 116.62 for the oil of brown cotton and Giza 85 variety respectively, which indicates that the oil of the Egyptian cottonseed belongs to the semi-dry oil category.

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