Cytidine is a nucleoside molecule that is formed when cytosine is attached to a ribose ring (also known as a ribofuranose) via a β-N1-glycosidic bond. Cytidine is a component of RNA. If cytosine is attached to a deoxyribose ring, it is known as a deoxycytidine. Dietary sources of cytidine Dietary sources of cytidine include foods with high RNA (ribonucleic acid) content,[1] such as organ meats, Brewer's yeast, as well as pyrimide-rich foods such as beer. During digestion, RNA-rich foods are broken-down into ribosyl pyrimidines (cytidine and uridine), which are absorbed intact.[1] In humans, dietary cytidine is converted into uridine, [2] which is probably the compound behind cytidine's metabolic effects. References 1. ^ a b Jonas DA, Elmadfa I, Engel KH, et al. (2001). "Safety considerations of DNA in food". Ann Nutr Metab. 45 (6): 235–54. doi:10.1159/000046734. PMID 11786646. http://content.karger.com/produktedb/produkte.asp?typ=fulltext&file=anm45235. Retrieved from "http://en.wikipedia.org/"
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