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Determination of Gossypol as an Undesirable Substance in Cotton Seed Cake and Oil of Different Cotton Varieties in Sudan

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dc.contributor.author Abdelhameed, Ayaat Abdelhameed Ahmed
dc.date.accessioned 2018-10-11T10:28:51Z
dc.date.available 2018-10-11T10:28:51Z
dc.date.issued 2013-02-03
dc.identifier.uri http://repo.uofg.edu.sd/handle/123456789/2349
dc.description A Dissertation Submitted in Partial Fulfillment of the Requirements for the Degree of Master of Science , in Food Science, Department of Food Science and Technology, Faculty of Engineering and Technology, University of Gezira, February, 2013 en_US
dc.description.abstract Gossypol, a yellow pigment polyphenolic toxic compound. It’s produced by some glands distributed all over the plant organs such as (Flower, bolls, seed, and leaves). It's concentrated in the seed appearing as dark dots. Gossypol has been recognized as a having adverse effect to human and animals if we found it in high concentration. The aim of this study was to determine gossypol in three different cottonseeds grown in Sudan plus seed of Ex1"experimental line" and their oil (Barakat 90, Abdein, Hamid and Ex1"experimental line"). Cottonseed of four different varieties was obtained from Agricultural Research Corporation (ARC) Wad Medani. Several analysis were conducted: hundred seed weight, hulls to kernel, moisture and volatile matter, the oil content, extraction of oil, thin layer chromatography, high performance liquid chromatography. Previously analysis were according to american oil chemist society (A.O.C.S) methods. The results showed that: the weight of 100 seed were (11.02), (10.70), (10.44), (9.26) gram for Abdein, Barakat 90, Hamid and Ex1 respectively; the kernel to hull ratio (wt%) were (1.43, 1.81, 1.92, 1.43) for Abdein, Barakat 90, Hamid andEx1 respectively, the moisture content were (5.25, 5.17, 5.10, 5.28)% for Abdein, Barakat 90, Hamid and Ex1 respectively, the oil content were (19.77, 20.78, 21.12 ,19.39)% for Abdein, Barakat 90 Hamid andEx1 respectively, the mobility parameter (Rf) in a thin layer chromatography were (0.5, 0.6, 0.7, 0.8, 0.9), (0.2, 0.6, 0.6, 0.7, 0.9), (0.2, 0.6, 0.7, 0.8, 0.9), (0.2, 0.6, 0.7, 0.8, 0.9), (0.5, 0.6, 0.6, 0.7, 0.9) for Barakat 90, Hamid, Ex1 and Abdein, respectively, the result of gossypol concentration as mean (%) in seed cake using high performance liquid chromatograph were (1.20±0.20, 0.76±0.17, 0.54±0.02, 0.31±0.02) for (Barakat 90, Ex1, Abdein, Hamid) respectively. The result of gossypol concentration as mean (%) in oil using high performance liquid chromatography to extract gossypol from seed oil were (0.87±0.020, 0.60±0.020, 0.40±0.020, 0.27±0.015)% for (Barakat 90,Ex1, Abdein, Hamid) respectively. This study recommend that Hamid and Abdein variety is much recommended to be used for oil production for its low gossypol content as Barakat 90 should be treated and refined or extracted with optimum method to raise the oil content and to reduce gossypol content. en_US
dc.description.sponsorship Salah Mohamed Nour Saleh (Main Supervisor) Atif Abdelmoneim Ahmed (Co-Supervisor:) en_US
dc.language.iso en en_US
dc.publisher University of Gezira en_US
dc.subject Extract oils en_US
dc.subject Food Sciences en_US
dc.subject Oils - Chemical analysis en_US
dc.title Determination of Gossypol as an Undesirable Substance in Cotton Seed Cake and Oil of Different Cotton Varieties in Sudan en_US
dc.type Thesis en_US


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