Sudan (Arabic:السودانas-Sūdān, English pronunciation (US) i/suˈdæn/, (GB) /suːˈdɑːn/), officially the Republic of the Sudan (Arabic:جمهورية السودانJumhūrīyat as-Sūdān), is a country in north-east Africa. It is bordered by Egypt to the north, the Red Sea, Eritrea, and Ethiopia, to the east, South Sudan to the south, the Central African Republic to the southwest, Chad to the west and Libya to the northwest. It is the third largest country in Africa. The River Nile divides the country into eastern and western halves. Its predominant religion is Islam.
Sudan dyes have high affinity to fats, therefore they are used to demonstrate triglycerides, lipids, and lipoproteins. Alcoholic solutions of Sudan dyes are usually used, however pyridine solutions can be used in some situations as well.
Sudan stain test is often used to determine the level of fecal fat to diagnose steatorrhea. A small sample is dissolved in water or saline, glacial acetic acid is added to hydrolyze the insoluble salts of fatty acids, a few drops of alcoholic solution of Sudan III are added, the sample is spread on a microscopic slide, and heated twice to boil. Normally a stool sample should show only a few drops of red-orange stained fat under the microscope. The method is only semiquantitative but, due to its simplicity, it is used for screening.
Sudan (Hangul:수단;hanja:水團 or 水鍴) is a kind of Korean traditional drink made of honey water and rice cake. It is usually served during the summer for quenching thirst. Traditionally Sudan was always served during a villagerite in 6th month in lunar calendar. Korean farmers prayed for a bountiful harvest and god’s blessing for their life in the future by making food offering including foods and Sudan drink.
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