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Vice Deanship of Library Affairs - Girls Campus
Document Details
Document Type
:
Thesis
Document Title
:
Evaluation Of Physical,Chemical and Biological Properties Of Seeds Oil in Kingdom Of Saudia
تقييم الصفات الطبيعية والكيميائية والبيولوجية تقييم الصفات الطبيعية لزيت بذور السمسم بالمملكة العربية السعودية لزيت بذور
Subject
:
plant oil
Document Language
:
Arabic
Abstract
:
This investigation was carried out on oil extracted from sesame varieties namely : White and brown sesame in an attempt to study the following points . Gross Chemical Composition of white and brown sesame seed varieties.Physico. chemical properties of crude oil extracted from the white and brown sesame seeds Effect of roasting of sesame seeds at 180 0C for 30 minutes on the physic. Chemical oils extracted roasted ( sesame seeds. )Anti-Oxidative effect of isolated from sesame oils on the oxidative stability of sun flower oil during storage at ambient temperatures (25-30 0c) for 6 months. Evaluation of utilization of sesame oils as a source of natural antioxidants. The result could be summarized in the following points : white and brown seeds varieties contained high oil content ranged from S2. 36 – S5.11.Protein, Stability of oils measured by rancimat at 100 0c showed that white seed oils was higher stability compared with brown seed oils Natural antioxidant content ( crude lignan )was higher in sesame oil (2.99 g / 100 g oil). Compared to brown sesame oil(2.33 g / 100 g).GLC chromatograms showed that all studied samples were characterized by the presence of higher levels of unsaturated fatty acids than the saturated ones . Unsaponifiable matters of sesame oil were fractioned by GLC technique it consisted mainly of hydrocarbons and sterols .β-Sitosteral and sigmasterol where the major sterol components in all studied samples .Acid value , peroxide value , TBA value , conjugated diene and triene and total sterols increased .,meanwhile , iodine value and total hydrocarbons were decreased as effected by roasting of sesame seeds at 180 0C for 30 minutes . the data revealed that sunflower oil containing natural antioxidants (crude lignans) had a much greater oxidative stability than oils without antioxidants .The result showed that rats feed containing sesame oils decreased the levels of serum total lipids, total tri-glusrids, total cholesterol , low density lipoprotein (LDL) and increased level of serum high density lipoprotein (HDL).
Supervisor
:
Prof.Dr Sohair Kandel
Thesis Type
:
Doctorate Thesis
Publishing Year
:
1431 AH
2010 AD
Number Of Pages
:
153
Added Date
:
Monday, September 9, 2013
Researchers
Researcher Name (Arabic)
Researcher Name (English)
Researcher Type
Dr Grade
Email
مها أحمد حجازي
HEJAZI, MAHA AHMAD
Investigator
Doctorate
Files
File Name
Type
Description
35971.pdf
pdf
35972.pdf
pdf
35973.pdf
pdf
35975.pdf
pdf
35976.pdf
pdf
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